TY - CONF A1 - Sturm, Heinz T1 - Harmonically modulated friction force microscopy: An AFM tool for analysis and modification of polymer surfaces T2 - International Symposium on Polymer Surface Characterization (MST conference) CY - Newark, NJ, USA DA - 2000-10-10 PY - 2000 AN - OPUS4-6505 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Scanning Force Microscopy (SFM) of Polymer surfaces: Materials contrasts and nanolithography T2 - Fachbereich Chemie der Universität Siegen CY - Siegen, Germany DA - 2003-07-01 PY - 2003 AN - OPUS4-4100 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Solomun, Tihomir A1 - Seitz, H. A1 - Sturm, Heinz T1 - Electron irradiation of immobilized DNA in solution through a silicon nano-membrane N2 - In fields involving irradiated aqueous solutions, such as radiotherapy and nuclear waste remediation, it is often unclear whether the principal reactive species are OH° radicals or secondary (low-energy) electrons. This is mostly because both are rapidly attenuated in water. Presently a large part of the evidence for the involvement of low-energy electrons in biological radiation damage is based on 'dry' DNA samples. We demonstrate irradiation of DNA in solution by direct injection of electrons through a 40-nm thin SiO2 membrane, followed by in-situ detection of the DNA damage by a fluorescence-based method. Corresponding Monte Carlo simulations show that the spatial distribution of ionizing events in water with respect to the membrane is controlled by the electron impact energy. By immobilizing DNA to the solution side of the membrane, and because dynamics and reaction ranges of OH° radicals and low-energy electrons are dramatically different, it is possible to tune into the OH° radical or into the electron 'reaction modes' by simply changing the electron impact energy. Such experiments have the potential to provide important information on the radio-sensitivity at a level of a single biomolecule and to contribute to the development of new dosage concepts. KW - Radiation chemistry KW - Low-energy electrons KW - DNA damage KW - Monte Carlo PY - 2013 DO - https://doi.org/10.1016/j.radphyschem.2013.02.035 SN - 0969-806X SN - 0020-7055 SN - 0146-5724 VL - 88 SP - 70 EP - 73 PB - Pergamon Press CY - Oxford [u.a.] ; Frankfurt, M. AN - OPUS4-30321 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Henrichsen, H. A1 - Sturm, Heinz A1 - Boggild, P. A1 - Hansen, O. T1 - Submicron organic nanofiber devices with different anode-cathode materials: A simple approach N2 - The authors present a simple general method for simultaneously producing tens of submicron electrode gaps with different cathode and anode materials on top of nanofibers, nanowires, and nanotubes, with an optional gap size variation. Using this method, an ensemble of para-hexaphenylene (p6P) nanofiber devices of different length was fabricated with Sm and Au electrodes. The measured I-V characteristics are in agreement with a nonlinear hopping transport model, where domain barriers dominate the transport with an estimated domain size of 23±5 nm. KW - Nanofibers KW - Sub-micron electrode KW - Para-hexaphenylene KW - Samarium KW - Gold KW - I/V-characteristics KW - Nanolasers KW - Domain barriers PY - 2010 DO - https://doi.org/10.1116/1.3431088 SN - 1071-1023 SN - 0734-211X VL - 28 IS - 3 SP - 617 EP - 622 PB - American Institute of Physics CY - New York, NY AN - OPUS4-21573 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Scanning Probe Microscopy Techniques for the Examination of Interface Nanomechanics - A Study of Topography, AC Conductivity and Surface Stiffness T2 - Workshop: Rastersondenmikroskopie in Forschung und Industrie an der GH Wuppertal CY - Wuppertal, Germany DA - 1999-03-11 PY - 1999 AN - OPUS4-6497 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Meyer-Plath, Asmus A1 - Beckert, F A1 - Tölle, FJ A1 - Sturm, Heinz A1 - Mülhaupt, R T1 - Stable aqueous dispersions of functionalized multi-layer graphene by pulsed underwater plasma exfoliation of graphite N2 - A process was developed for graphite particle exfoliation in water to stably dispersed multi-layer graphene. It uses electrohydraulic shockwaves and the functionalizing effect of solution plasma discharges in water. The discharges were excited by 100 ns high voltage pulsing of graphite particle chains that bridge an electrode gap. The underwater discharges allow simultaneous exfoliation and chemical functionalization of graphite particles to partially oxidized multi-layer graphene. Exfoliation is caused by shockwaves that result from rapid evaporation of carbon and water to plasma-excited gas species. Depending on discharge energy and locus of ignition, the shockwaves cause stirring, erosion, exfoliation and/or expansion of graphite flakes. The process was optimized to produce long-term stable aqueous dispersions of multi-layer graphene from graphite in a single process step without requiring addition of intercalants, surfactants, binders or special solvents. A setup was developed that allows continuous production of aqueous dispersions of flake size-selected multi-layer graphenes. Due to the well-preserved sp(2)-carbon structure, thin films made from the dispersed graphene exhibited high electrical conductivity. Underwater plasma discharge processing exhibits high innovation potential for morphological and chemical modifications of carbonaceous materials and surfaces, especially for the generation of stable dispersions of two-dimensional, layered materials. KW - Exfoliation KW - Graphene KW - Aqueous dispersion KW - Solution plasma KW - Functionalization KW - Electrohydraulic effect KW - Shear exfoliation KW - Oxide-films KW - Water PY - 2016 DO - https://doi.org/10.1088/0022-3727/49/4/045301 SN - 0022-3727 VL - 49 IS - 4 SP - 045301-1 EP - 045301-11 AN - OPUS4-35796 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Munz, Martin A1 - Chung, Jae Un A1 - Eltanany, Gehan A1 - Sturm, Heinz A1 - Schulz, Eckhard ED - Degischer, H.-P. T1 - Interphasial stiffness gradients in polymer materials T2 - Symposium Verbundwerkstoffe und Werkstoffverbunde CY - Wien, Österreich DA - 2003-07-02 PY - 2003 SN - 3-527-30762-1 PB - Wiley-VCH CY - Weinheim AN - OPUS4-2525 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Modulated Lateral Force Microscopy: An AFM tool for Analysis and Modification of Polymer T2 - German-Russian Workshop "Contact Mechanics and Friction" CY - Berlin, Germany DA - 2009-10-05 PY - 2009 AN - OPUS4-20751 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Rasterkraftmikroskopische Verfahren zur Beschreibung der Grenzflächen in Polymer-Kompositwerkstoffen T2 - Konferenz: Nanotechnologie für Faserkunststoffverbunde CY - Braunschweig, Germany DA - 2010-05-26 PY - 2010 AN - OPUS4-21616 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - How to write functional areas on polymers using DPL - a way to produce nanoarrays for life science applications T2 - iThemba LABS CY - Somerset West, South Africa DA - 2002-02-03 PY - 2002 AN - OPUS4-6528 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Scanning force mocroscopy based lothography T2 - JPK-Wirkshop "Scanning probe microscopy in life science" CY - Berlin, Germany DA - 2003-09-18 PY - 2003 AN - OPUS4-4653 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Braun, Ulrike A1 - Bahr, Horst A1 - Sturm, Heinz A1 - Schartel, Bernhard T1 - Flame retardancy mechanisms of metal phosphinates and metal phosphinates in combination with melamine cyanurate in glass-fiber reinforced poly(1,4-butylene terephthalate): the influence of metal cation N2 - The pyrolysis and fire behavior of glass-fiber reinforced poly(butylene terephthalate) (PBT/GF) with two different metal phosphinates as flame retardants in combination with and without melamine cyanurate (MC) were analyzed by means of thermogravimetry, thermogravimetry coupled with infrared spectroscopy, flammability, and cone calorimeter tests as well as scanning electron microscopy/energy dispersive X-ray spectroscopy and X-ray fluorescence spectroscopy. In PBT/GF, dosages of 13-20% of the halogen-free flame retardant aluminum phosphinate or aluminum phosphinate in combination with MC fulfill the requirements for electrical engineering and electronics applications (UL 94 = V-0; LOI > 42%), whereas the use of the same amount of zinc phosphinate or zinc phosphinate in combination with MC does not improve the fire behavior satisfactorily (UL 94 = HB; LOI = 27-28%). The performance under forced flaming conditions (cone calorimeter) is quite similar for both of the metal phosphinates. The use of aluminum and zinc salts results in similar flame inhibition predominantly due to the release of the phosphinate compounds in the gas phase. Both metal phosphinates and MC interact with the polymer changing the decomposition characteristics. However, part of the zinc phosphinate vaporizes as a complete molecule. Because of the different decomposition behavior of the metal salts, only the aluminum phosphinate results in a small amount of thermally stable carbonaceous char. In particular, the aluminum phosphinate-terephthalate formed is more stable than the zinc phosphinate-terephthalate. The small amount of char has a crucial effect on the thermal properties and mechanical stability of the residue and thus the flammability. KW - Flame retardance KW - Polyester KW - Phosphinates KW - Pyrolysis KW - Cone calorimeter PY - 2008 DO - https://doi.org/10.1002/pat.1147 SN - 1042-7147 SN - 1099-1581 VL - 19 IS - 6 SP - 680 EP - 692 PB - John Wiley & Sons, Ltd. CY - Chichester AN - OPUS4-17620 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Cappella, Brunero A1 - Sturm, Heinz A1 - Weidner, Steffen T1 - Breaking polymer chains by dynamic plowing lithography N2 - The adhesion of poly(methyl methacrylate) (PMMA) and polystyrene (PS) films, whose surface has been previously structured by dynamic plowing lithography (DPL), has been measured by means of force–displacement curves. The different adhesion of modified and unmodified PS leads to the assumption that polymer chains are broken during DPL. After measuring the energy dissipated by the tip during DPL, in order to check that the transferred energy is sufficient to break covalent bonds, the polymer chain scission caused by the lithographic process has been definitely confirmed by size exclusion chromatography measurements of the lithographed films. KW - AFM KW - Nanolithography KW - Chain scission PY - 2002 DO - https://doi.org/10.1016/S0032-3861(02)00285-9 SN - 0032-3861 SN - 1873-2291 VL - 43 IS - 16 SP - 4461 EP - 4466 PB - Springer CY - Berlin AN - OPUS4-1608 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Rasterkraftmikroskopie auf Oberflächen polymerer Werkstoffe T2 - Berliner Polymeren-Tage CY - Potsdam, Germany DA - 1994-10-05 PY - 1994 AN - OPUS4-6371 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Reibungsmikroskopie auf laserabladierten C-Faser-Verbunden und plasmapolymerisierten dünnen Schichten T2 - Tagung "Raster-Sonden-Mikroskopien und organische Materialien II" CY - Mainz, Germany DA - 1993-10-11 PY - 1993 AN - OPUS4-6380 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Silbernagl, Dorothee A1 - Sturm, Heinz A1 - Cappella, Brunero T1 - Influence of film-substrate adhesion on the mechanical properties of thin polymer films KW - Adhesion KW - AFM KW - Thin film KW - Mechanical properties KW - Force-distance curves PY - 2009 DO - https://doi.org/10.1021/la8041007 SN - 0743-7463 SN - 1520-5827 VL - 25 IS - 9 SP - 5091 EP - 5097 PB - American Chemical Society CY - Washington, DC AN - OPUS4-19363 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Nanotribology and vibrating contacts T2 - Chinese-German Symposium Nanomanufacturing and Nanotribology CY - Berlin, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23582 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Friedrich, Jörg Florian A1 - Mix, Renate A1 - Wettmarshausen, Sascha A1 - Sturm, Heinz ED - Tachibana, K. ED - Takai, O. T1 - A new concept of adhesion promotion in metal-polymer composites by introduction of covalently bonded hydrophobic spacers at interface T2 - Proceedings of the 18th International Symposium on Plasma Chemistry (ISPC-18) CY - Kyoto, Japan DA - 2007-08-26 PY - 2007 SN - 978-4-9903773-4-2 SP - 27A EP - p5, 1 PB - International Union of Pure and Applied Chemistry CY - Kyoto AN - OPUS4-20668 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Cappella, Brunero A1 - Sturm, Heinz T1 - Dynamic Plowing Lithography of Single Holes on Polymethylmethacrylate Using an Atomic Force Microscope N2 - Dynamic Plowing Lithography is employed to carve holes in a PMMA surface by indenting the sample during Tapping Mode imaging. The dependence of the dimensions of the holes on the tip shape, on the modulation voltage amplitude, and on the number of contacts between the tip and sample is studied. The results give some insights in the physico-chemical mechanisms accompanying such rapid modifications. Two-dimensional arrays of holes have also been carved, in order to study the result of the superposition of single holes. PY - 2001 SN - 0044-376x VL - 10 Suppl. 1 SP - 8 EP - 15 PB - Hirzel CY - Stuttgart, Germany AN - OPUS4-1633 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sturm, Heinz A1 - Heyde, M. A1 - Rademann, K. T1 - Measuring SPM Piezo Displacement Responses PY - 1999 SN - 1551-9295 VL - 99 IS - 4 SP - 24 EP - 26 PB - Microscopy Society of America CY - Wappingers Falls, NY AN - OPUS4-6860 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Scanning Probe Microscopy Techniques for the Examination of Nanomechanics - a study of Topography, AC Conductivity and Surface Stiffness T2 - Raster-Sonden-Mikroskopien und organische Materialien VII CY - Berlin, Germany DA - 1998-10-08 PY - 1998 AN - OPUS4-6448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Cappella, Brunero A1 - Kaliappan, Senthil Kumar A1 - Sturm, Heinz T1 - Using AFM Force-Distance Curves To Study the Glass-to-Rubber Transition of Amorphous Polymers and Their Elastic-Plastic Properties as a Function of Temperature N2 - Force-displacement curves have been obtained with a commercial atomic force microscope (AFM) at different temperatures and probe rates on a thick film of poly(n-butyl methacrylate) (PnBMA). The analysis of the force-displacement curves has been focused on the contact portion of the curves, giving information about the stiffness of the sample and its Young's modulus. A novel model of sample deformations that extends the basic equations of the elastic continuum contact theories to the plastic deformations is presented. This model gives several insights into the processes of deformation of soft samples and permits to calculate not only the parameters of the Williams-Landel-Ferry equation but also the Young's modulus and the yielding force of the polymer as a function of temperature and/or probe rate. These quantities have been measured in a wide range of temperatures (70 K) and probe rates (6 decades) for the first time with the AFM, and the results are in very good agreement with measurements performed with customary techniques, such as broadband spectroscopy and dynamic mechanical analysis. KW - AFM KW - Polymers KW - Glas transition temperature PY - 2005 DO - https://doi.org/10.1021/ma040135f SN - 0024-9297 SN - 1520-5835 VL - 38 SP - 1874 EP - 1881 PB - American Chemical Society CY - Washington, DC AN - OPUS4-7274 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Cappella, Brunero A1 - Sturm, Heinz T1 - Comparison between dynamic plowing lithography and nanoindentation methods N2 - Two different methods of nanolithography, namely dynamic plowing lithography (DPL) and indentation by means of force-displacement curves (FDI), have been compared by performing them on two different polymers, poly (methylmethacrylate) and polystyrene. No fundamental differences can be found out in the efficiency of the two methods, i.e., in the depth of the lithographed structure as a function of the scanning parameters. The main drawback of FDI is that it is much more time consuming than DPL. On the other hand, when the sample is lithographed with DPL, the border walls that surround the lithographed structure are very much bigger than the border walls created through FDI. The physicochemical properties of the border walls created through DPL have been investigated. Several experimental data reveal that such border walls are very much softer and looser than unmodified polymers and suggest that during DPL the fast oscillating tip is able to break polymer chains. This does not happen with FDI, where border walls are simply made up of the material carved out by the tip. A method to eliminate these undesirable border walls is suggested. PY - 2002 DO - https://doi.org/10.1063/1.1421632 SN - 0021-8979 SN - 1089-7550 VL - 91 IS - 1 SP - 506 EP - 512 PB - American Institute of Physics CY - Melville, NY AN - OPUS4-1632 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Methoden zur Messung elekrischer Eigenschaften in der Rasterkraftmikroskopie T2 - 3. Mikrosymposium: Elektronenmikroskopie in der Materialforschung - Rasterkraftmikroskopie an Polymeren an der Martin-Luther-Universität Halle-Wittenberg CY - Merseburg, Germany DA - 1996-05-31 PY - 1996 AN - OPUS4-6399 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Bresch, Harald A1 - Lexow, Jürgen A1 - Sturm, Heinz A1 - Packroff, R. A1 - Völker, D. A1 - Mutz, D. A1 - Bosse, H. A1 - Gebel, T. A1 - Pipke, R. A1 - Marx, R. A1 - Plitzko, S. A1 - Niesmann, K. A1 - Meyer-Plath, A. A1 - Burgdorf, T. A1 - Engel, N. A1 - Epp, A. A1 - Haase, A. A1 - Herzberg, F. A1 - Laux, P. A1 - Oberemm, A. A1 - Sommer, Y. A1 - Tentschert, J. A1 - Ulm, G. A1 - Schwirn, K. A1 - Liesegang, C. T1 - Nanomaterialien und andere innovative Werkstoffe: anwendungssicher und umweltverträglich T1 - Nanomaterials and other advanced materials: application safety and environmental compatibility N2 - Mit einer langfristigen Forschungsstrategie begleiten die für die Sicherheit von Mensch und Umwelt zuständigen Bundesoberbehörden (Umweltbundesamt, Bundesinstitut für Risikobe-wertung, Bundesanstalt für Arbeitsschutz und Arbeitsmedizin, Bundesanstalt für Materialfor-schung und -prüfung und Physikalisch-Technische Bundesanstalt) die rasch voranschreiten-de Entwicklung neuer Materialien unter den Gesichtspunkten des Arbeits-, Verbraucher- und Umweltschutzes. Die Strategie steht daher in enger Verbindung zu den öffentlichen Förder-programmen für Nanomaterialien und andere innovative Werkstoffe, z. B. des BMBF („Vom Material zur Innovation“) und der EU („Horizon 2020“). Die Forschungsstrategie baut auf den bisherigen Ergebnissen der 2008 begonnenen und 2013 erstmals bilanzierten gemeinsamen Forschungsstrategie der Bundesoberbehörden „Nanotechnologie - Gesundheits- und Umweltrisiken von Nanomaterialien"1 auf und erweitert den Blickwinkel auch auf andere Materialinnovationen, bei denen vergleichbare Risiken für Mensch und Umwelt bestehen oder abgeklärt werden müssen. Darüber hinaus greift sie die Idee „anwendungssichere chemische Produkte“2 aus der Initiative „Neue Qualität der Arbeit“ (INQA) des Bundesministeriums für Arbeit und Soziales (BMAS) und das Konzept der nach-haltigen Chemie3 auf, das vom Bundesministerium für Umwelt, Naturschutz, Bau und Reak-torsicherheit (BMUB) unterstützt wird. Durch eine anwendungssichere und umweltverträgli-che Gestaltung innovativer Materialien und ihrer Folgeprodukte sollen nicht akzeptable Risi-ken für Mensch und Umwelt von Anfang an weitgehend ausgeschlossen werden. Dies kann erreicht werden durch 1. die Verwendung sicherer Materialien ohne Gefahreneigenschaften für Mensch und Umwelt (direkte Anwendungssicherheit) oder 2. eine Produktgestaltung, die über den gesamten Lebenszyklus emissionsarm und umweltverträglich ist (integrierte Anwendungssicherheit) oder 3. eine Unterstützung des Anwenders (product stewardship) durch den Hersteller bei technischen, organisatorischen und persönlichen Schutzmaßnahmen zur sicheren Verwendung und Entsorgung des Produktes (unterstützte Anwendungssicherheit). Die Fortschreibung der Forschungsstrategie soll als Bestandteil des Nanoaktionsplans 2020 der Bundesregierung Beiträge der Ressortforschung zu folgenden Schwerpunkten leisten: • Charakterisierung und Bewertung der Risiken von Materialinnovationen • Unterstützung von Forschungseinrichtungen und Unternehmen • Fortschreiben von Rechtsvorschriften und Praxisempfehlungen 1 http://www.baua.de/nn_47716/de/Themen-von-A-Z/Gefahrstoffe/Nanotechnologie/pdf/Forschungsstrategie.pdf 2 http://www.baua.de/de/Themen-von-A-Z/Gefahrstoffe/Nachhaltige-Chemie/Nachhaltige-Chemie.html 3 http://www.umweltbundesamt.de/themen/chemikalien/chemikalien-management/nachhaltige-chemie 2 • Gesellschaftliche Akzeptanz Die Forschungsstrategie soll mit Projekten und anderen forschungsnahen Aktivitäten umge-setzt werden. Dies umfasst die eigene Forschung der Häuser, die extramurale Ausschrei-bung und Vergabe von Forschungsdienstleistungen sowie die Beteiligung an vorwiegend öffentlich geförderten Drittmittelprojekten. Hinzu kommen Aktivitäten im Rahmen der Politik-beratung und der hoheitlichen Aufgaben. Mit inter- und transdisziplinären Ansätzen soll die Risiko- und Sicherheitsforschung enger mit der Innovationsforschung und Materialentwick-lung verknüpft werden. Die Forschungsstrategie ist aufgrund der raschen Entwicklungen auf diesem Gebiet für den Zeitraum bis 2020 angelegt. Die Forschungsziele adressieren die in diesem Zeitraum voraussichtlich umsetzbaren Forschungsansätze. Die Forschungsstrategie wird durch einen Arbeitskreis begleitet und spätestens mit Ablauf des Nanoaktionsplans 2020 evaluiert und angepasst. KW - Forschungsstrategie KW - Bundesoberbehörden KW - Nanomaterialien KW - Innovative Werkstoffe KW - Nano PY - 2016 UR - https://www.bam.de/_SharedDocs/DE/Downloads/nano-forschungsstrategie-2016.pdf?__blob=publicationFile&v=3 UR - http://www.baua.de/de/Themen-von-A-Z/Gefahrstoffe/Nanotechnologie/pdf/Fortschreibung-Forschungsstrategie.pdf?__blob=publicationFile&v=3 UR - http://www.bmub.bund.de/fileadmin/Daten_BMU/Download_PDF/Nanotechnologie/forschungsstrategie_bundesoberbehoerden_de_bf.pdf SP - 1 EP - 28 PB - UBA/BfR/BAuA/BAM/PTB CY - Berlin AN - OPUS4-37526 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Scanning Force Microscopy Investigation on Electroactive Polymers and their Metal Electrodes Probing Local Electro-Mechanical Properties T2 - 10th International Symposium on Electrets (ISE 10) CY - Delphi, Greece DA - 1999-09-22 PY - 1999 AN - OPUS4-6502 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Harmonically Modulated Friction Force Microscopy of Polymers and Composites T2 - Workshop "Scanning Probe Microscopy In the New Millennium" CY - Faure, South Africa DA - 2001-02-26 PY - 2001 AN - OPUS4-6512 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Anwendungen der Rasterkraftmikroskopie auf polymere Werkstoffe T2 - Berliner Verband für Polymerforschung CY - Berlin, Germany DA - 1993-05-05 PY - 1993 AN - OPUS4-6381 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn A1 - Munz, Martin A1 - Sturm, Heinz ED - Vajtai, R. T1 - Scanning force microscopic investigations of the femtosecond pulse laser ablation of indium phosphide in air N2 - Laser ablation of single-crystalline indium phosphide (InP) was performed in air by means of linearly polarized Ti:sapphire femtosecond-pulses (800 nm, 130 fs, 10 Hz). As a result of the first laser pulses, several morphological changes (crater formation, rim formation, ripple structures and cones) were observed. These effects were explored using force modulation microscopy (FMM), a technique based on scanning force microscopy (SFM), allowing the simultaneous imaging of both topography and local stiffness at a high lateral resolution. The first laser pulse induces the formation of a protruding rim (height <20 nm, width ~300 nm) bordering the ablated crater. A Fourier-analysis of the multi-pulse generated topographies reveals the formation of wavelength-sized periodic ripples (modulation depth <100 nm) with an orientation perpendicular to that of the electric field vector of the laser radiation. Besides these morphological alterations, also material modifications were observed in the irradiated regions by means of the FFM technique. Within the ablated craters, local stiffness variations were found revealing an inhomogeneous material composition/structure as a consequence of the femtosecond pulse laser treatment. T2 - Nanotechnology Conference 2003 CY - Maspalomas, Gran Canaria, Spain DA - 2003-05-19 KW - Femtosecond laser irradiation KW - Microstructure KW - Indium phosphide KW - Scanning/atomic force microscopy (SFM/AFM) KW - Stiffness KW - Laser induced periodic surface structures (LIPSS) PY - 2003 UR - http://cat.inist.fr/?aModele=afficheN&cpsidt=15329222 SN - 0-8194-4978-4 N1 - Serientitel: SPIE proceedings series – Series title: SPIE proceedings series IS - 5118 SP - 221 EP - 234 PB - SPIE, the International Society for Optical Engineering CY - Bellingham, Wash. AN - OPUS4-2865 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Rasterkraft- und elektrische Leitfähigkeitsmikroskopie auf kohlefaserverstärkten Polymersystemen T2 - Workshop "Oberflächencharakterisierung mit Rastersondenmikroskopie" an der Humboldt-Universität CY - Berlin, Germany DA - 1994-09-29 PY - 1994 AN - OPUS4-6374 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bovtun, V. A1 - Sturm, Heinz A1 - Leshchenko, M. A. A1 - Yakimenko, Y. T1 - Dynamics of nanodomains (clusters) and dielectric relaxation in disordered ferroelectrics KW - Lead magnoniobate KW - Phase-transition KW - Dispersion PY - 1997 SN - 0015-0193 SN - 1563-5112 VL - 190 IS - 1-4 SP - 161 EP - 166 PB - Taylor & Francis CY - New York, NY AN - OPUS4-6853 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Messungen elektrischer Eigenschaften in der Rasterkraftmikroskopie T2 - Forschungsseminar zur Oberflächenphysik der Lehrstühle: Oberflächenphysik und Atomstoßprozesse und Elektronische Eigenschaften und Supraleitung CY - Berlin, Germany DA - 1997-11-17 PY - 1997 AN - OPUS4-6428 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Zarinwall, A. A1 - Waniek, Tassilo A1 - Saadat, R. A1 - Braun, U. A1 - Sturm, Heinz A1 - Garnweitner, G. T1 - Comprehensive Characterization of APTES Surface Modifications of Hydrous Boehmite Nanoparticles N2 - Hydrous boehmite (γ-AlOOH) nanoparticles (BNP) show great potential as nanoscale filler for the fabrication of fiber reinforced nanocomposite materials. Notably, the particle−matrix interaction has been demonstrated to be decisive for improving the matrix-dominant mechanical properties in the past years. Tailoring the surface properties of the nanofiller enables to selectively design the interaction and thus to exploit the benefits of the nanocomposite in an optimal way. Here, an extensive study is presented on the binding of (3-aminopropyl)triethoxysilane (APTES), a common silane surface modifier, on BNP in correlation to different process parameters (concentration, time, temperature, and pH). Furthermore, a comprehensive characterization of the modified BNP was performed by using elemental analysis (EA), thermogravimetric analysis (TGA) coupled with mass spectrometry (TGA-MS), and Kaiser’s test (KT). The results show an increasing monolayer formation up to a complete surface coverage with rising APTES concentration, time, and temperature, resulting in a maximal grafting density of 1.3 molecules/nm². Unspecific multilayer formation was solely observed under acidic conditions. Comparison of TGA-MS results with data recorded from EA, TGA, and KT verified that TGA-MS is a convenient and highly suitable method to elucidate the ligand binding in detail. KW - Boehmite KW - Nanoparticle KW - Surface KW - APTES KW - Functionalization KW - BET KW - TGA KW - Grafting KW - Nanocomposite KW - Silane PY - 2020 DO - https://doi.org/10.1021/acs.langmuir.0c02682 VL - 37 IS - 1 SP - 171 EP - 179 PB - ACS Publications AN - OPUS4-51954 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Hahn, Marc Benjamin A1 - Sturm, Heinz A1 - Bier, F A1 - Solomun, Tihomir T1 - Biologische Konsequenzen einer nanoskaligen Energiedeposition: Fokussierung auf die Rolle niederenergetischer Elektronen T1 - Biological Consequence of Nanoscale Energy Deposition: Focusing on the Role of Low-Energy Electrons N2 - Bei der Behandlung von Krebs mittels Strahlentherapie sollen Tumorzellen abgetötet werden ohne das umliegende gesunde Gewebe zu zerstören. Um Strahlentherapien für Patienten verträglicher zu machen, ist ein besseres Verständnis der zugrundeliegenden Prozesse auf der molekularen Ebene nötig. Dabei sind der Energieeintrag und die Streuprozesse der Strahlung in der Umgebung der DNA von besonderem Interesse. Durch Streuung von hochenergetischer Strahlung in Wasser werden besonders viele Sekundärelektronen mit niedriger Energie erzeugt. Zur Untersuchung der Schädigungseffizienz dieser Elektronen wurde ein Verfahren zur direkten Bestrahlung von Lösungen mittels Elektronen variabler Energien enwtickelt. Dies wurde durch einen neu entwickelten Probenhalter mit einer für Elektronen durchlässigen Nanomembran ermöglicht. Mit diesem können Bestrahlungen an DNA, Proteinen, und Zellen bei verschiedenen pH-Werten oder Salzkonzentrationen durchgeführt werden. Parallel dazu wurde der ortsabhängige Energieeintrag innerhalb des Wassers durch Elektronenstreusimulationen bestimmt. Diese neuartige Kombination von Experiment und Simulation ermöglicht die Bestimmung der Schaden-Dosis-Relation für Elektronenbestrahlung von biologischen Systemen unter realistischen physiologischen Bedingungen. So konnten für die genutzten Primärelektronen wie die mittlere letale Dosis, bei der 50 Prozent der DNA geschädigt sind, mit 1,7 Gy bestimmt. Ebenfalls wurde das für mikrodosimetrische Modellierungen und Betrachtungen der sogenannten Linear energy transfer (LET) Effekte, wichtige Verhältnis von DNA Einzelstrangbrüchen (SSB) zu Doppelstrangbrüchen (DSB) als SSB/DSB = 12/1 bestimmt. Mit Hilfe eines Modells für das Targetvolumen der DNA wurde der mittlere mikroskopische letale Energieeintrag berechnet als E1/2 = 6 ± 4 eV . Es wurde gefolgert, dass weniger als zwei Ionisationsprozesse im sensitiven Targetvolumen der DNA im Mittel zu einem Einzelstrangbruch führen. Diese Methode ist unabhängig von den Primärpartikel und geometrischen Bedingungen. Deshalb ermöglicht sie die Vergleichbarkeit experimenteller Systeme mit inhomogenen Energieverteilungen, welches sonst nicht gegeben ist. Des weiteren wurden die Strahlenschutzfunktionen des Zellschutzmoleküls Ectoines und sein Einfluss auf Wasser und Biomoleküle untersucht. Seine Schutzfunktion gegen ionisierende Strahlung wurde auf die Erhöhung des Streuquerschnitts niederenergetischer Elektronen und seine Eigenschaft als OH-Radikalfänger zurückgeführt. Aufbauend auf unseren Erkenntnissen finden in klinischen Arbeitsgruppen Untersuchungen zu Einsatzmöglichkeiten im Umfeld der Strahlentherapie statt. Projektkennung Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 245767821 N2 - To cure cancer radiation therapy is used to kill tumor cells. It is based on radiation induced damage to biomolecules. Here DNA damage is of key interest due to its central role in apoptosis and mutation. Because of the high amount of water in biological tissue, most of the damage is caused by the secondary particles produced by the inelastic scattering of ionizing radiation and water. A detailed understanding of the underlying molecular processes under physiological conditions is the prerequisite to develop more efficient the-rapies. Therefore irradiations have to be performed in liquid, under consideration of the chemical environment. To make it possible to irradiate liquids with electrons within scanning electron microscopes a new sample holder was constructed incorporating an electron transparent nanomembrane. It makes it possible to irradiate DNA, proteins or cells at different pH and salinity. The median lethal dose for a model system of plasmid DNA and water was determined by the combination of experimental data, particle scattering simulations (Geant4-DNA) and diffusion calculations as D1/2 = 1.7 ± 0.3 Gy. From the convolution of plasmid positions and the spatially resolved energy deposit, as determined by electron scattering simulations, the histogram of the energy deposit within the target volume of the plasmids and the microscopic median lethal energy deposit was calculated as E1/2 = 6 ± 4 eV . It could be deduced, that on average less than two ionization Events are sufficient to cause a single-strand-break. The relation of single-strand-breaks (SSB) to double-strand-breaks (DSB), which is of importance for microdosimetric modeling, was determined as SSB : DSB = 12 : 1. The presented method for the Determination of microscopic dose-damage relations was further extended to be applicable for General irradiation experiments. It is independent of the type of primary radiation used, the experimental geometry, and the diffusional properties of the molecules under investigation. This way different experimental systems with varying, inhomogeneous energy deposit characteristics become comparable with each other, which is not possible when only macroscopic averaged values are taken into account. In addition, the radiation protection properties of the compatible solute Ectoine was investigated. The protective properties of ectoine result from the increase of the inelastic scattering probabilities of low Energy electrons at the acoustic vibrational modes of water and its properties as OH-radical scavenger. Based on our results, further investigations are conducted to evaluate the application of Ectoine in the context of radiation therapy. Projektkennung Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 245767821 KW - Ectoin KW - Ectoine KW - DNS KW - DNA KW - Cancer therapy KW - DNA damage KW - DNA radiation damage KW - Dosimetry KW - DFG KW - Electron irradiation KW - Ectoine DNA interaction KW - Ectoine radiation protection KW - Hydroxyl radicals KW - OH radicals KW - LEE KW - Low energy electrons KW - Microdosimetry KW - Radiation KW - Geant4 KW - Geant4-DNA KW - Radiation therapy KW - LET PY - 2021 UR - https://gepris.dfg.de/gepris/projekt/245767821/ergebnisse?context=projekt&task=showDetail&id=245767821&selectedSubTab=2& SP - 1 EP - 14 AN - OPUS4-52389 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bonse, Jörn A1 - Munz, Martin A1 - Sturm, Heinz T1 - Structure formation on the surface of indium phosphide irradiated by femtosecond laser pulses N2 - Laser-induced periodic surface structures (LIPSS; ripples) with different spatial characteristics have been observed after irradiation of single-crystalline indium phosphide (c-InP) with multiple linearly polarized femtosecond pulses (130 fs, 800 nm) in air. With an increasing number of pulses per spot, N, up to 100, a characteristic evolution of two different types of ripples has been observed, i.e., (i) the growth of a grating perpendicular to the polarization vector consisting of nearly wavelength-sized periodic lines and (ii), in a specific pulse number regime (N = 5-30), the additional formation of equally oriented ripples with a spatial period close to half of the laser wavelength. For pulse numbers higher than 50, the formation of micrometer-spaced grooves has been found, which are oriented perpendicular to the ripples. These topographical surface alterations are discussed in the frame of existing LIPSS theories. KW - Femtosecond laser irradiation KW - Indium phosphide KW - Microstructure KW - Laser induced periodic surface structures KW - LIPSS KW - SEM PY - 2005 DO - https://doi.org/10.1063/1.1827919 SN - 0021-8979 SN - 1089-7550 VL - 97 SP - 1 EP - 9 PB - American Institute of Physics CY - Melville, NY AN - OPUS4-5992 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Technology transfer of a new developed exploratory Scanning Force Microscope, fine-tuned to meet the demands of the upcoming Nanobiotechnology industries T2 - International Forum On Project Development, Industrial Heritage Program CY - Bologna, Italy DA - 2005-02-28 PY - 2005 AN - OPUS4-6976 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Messung elektrischer Eigenschaften in der Rasterkraftmikroskopie: Leitfähigkeitskontrast auf Kohlefaseroberflächen T2 - Tagung "Raster-Sonden-Mikorskopien und organische Materialien IV" CY - Munich, Germany DA - 1995-10-11 PY - 1995 AN - OPUS4-6388 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Analysis of Scanning Probe Microscopy (SPM) Piezos T2 - Digital-Instruments User-Workshop an der TU Dresden CY - Dresden, Germany DA - 1999-04-07 PY - 1999 AN - OPUS4-6498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Braun, Ulrike A1 - Lorenz, Edelgard A1 - Weimann, Christiane A1 - Sturm, Heinz A1 - Karimov, I. A1 - Ettl, J. A1 - Meier, R. A1 - Wohlgemuth, W. A. A1 - Berger, H. A1 - Wildgruber, M. T1 - Mechanic and surface properties of central-venous port catheters after removal: A comparison of polyurethane and Silicon rubber materials N2 - Central venous port devices made of two different polymeric materials, thermoplastic polyurethane (TPU)and silicone rubber (SiR), were compared due their material properties. Both naïve catheters as well as catheters after removal from patients were investigated. In lab experiments the influence of various chemo-therapeutic solutions on material properties was investigated, where as the samples after removal were compared according to the implanted time inpatient. The macroscopic,mechanical performance was assessed with dynamic, specially adapted tests for elasticity. The degradation status of the materials was determined with common tools of polymer characterisation, such as infrared spectroscopy, molecular weight measurements and various methods of thermal analysis. The surface morphology was an alysed using scanning electron microscopy. A correlation between material properties and clinical performance was proposed. The surface morphology and chemical composition of the polyurethane catheter materials can potentially result in increased susceptibility of the catheter to bloodstream infections and thrombotic complications. The higher mechanic failure,especially with increasing implantation time of the silicone catheters is related to the lower mechanical performance compared to the polyurethane material as well as loss of barium sulphate filler particles near the surface of the catheter. This results in preformed microscopic notches, which act as predetermined sites of fracture. KW - Thermoplastic polyurethane (TPU) KW - Silicone rubber (SiR) KW - Catheters KW - Central venous access port KW - Complication KW - Structure propertyrelationship KW - Mechanical testing PY - 2016 DO - https://doi.org/10.1016/j.jmbbm.2016.08.002 SN - 1751-6161 SN - 1878-0180 VL - 64 SP - 281 EP - 291 PB - Elsevier Ltd. AN - OPUS4-37178 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Munz, Martin A1 - Sturm, Heinz A1 - Schulz, Eckhard A1 - Hinrichsen, G. T1 - The scanning force microscope as a tool for the detection of local mechanical properties within the interphase of fibre reinforced polymers N2 - Scanning force microscopy (SFM) has been used to assess the local mechanical properties of fibre-reinforced polymers. Using a sinusoidal displacement modulation (DM) and lock-in technique the method allows to characterize local viscoelastic properties with a high lateral resolution. The simultaneous measurement of the local electrical conductivity is proposed which facilitates the interpretation of the mechanical data. The investigation of cross-sections perpendicular to the axis of carbon fibres embedded in PPS delivers some information about the change in local stiffness within the interfacial region. As a first approach, assuming a single-exponential decrease in local stiffness along a radial line from fibre to polymer we find characteristic decay lengths which are distributed in a range between 20 and 80nm. Further, a modified DM-mode is proposed which is expected to provide a contrast enhancement of the signal which is related to local stiffness. This can be achieved by installing an additional feedback loop which keeps constant the amplitude of dynamic indentation (CDI-mode). KW - Polymer-matrix composites (PMC´s) KW - Interface/interphase KW - SFM/AFM KW - Surface properties KW - Nondestructive testing PY - 1998 DO - https://doi.org/10.1016/S1359-835X(98)00077-3 SN - 1359-835X VL - 29 SP - 1251 EP - 1259 PB - Elsevier CY - Oxford AN - OPUS4-1294 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Sturm, Heinz A1 - Geuss, Markus A1 - Schulz, Eckhard ED - Konsta, A. T1 - Scanning force microscopy investigations on electroactive polymer films N2 - The authors present investigations on a PVDF (polyvinylidenefluoride) film supplied with top and bottom Au electrodes, which is analysed using a SFM and a contactless optical sensor to measure the sample strain with respect to applied fields. T2 - 10th IEEE International Symposium on Electrets (ISE) CY - Delphi, Greece DA - 1999-09-22 PY - 1999 SN - 0-7803-5025-1 DO - https://doi.org/10.1109/ISE.1999.832086 SP - 465 EP - 468 PB - IEEE Operations Center CY - Piscataway, NJ AN - OPUS4-6862 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - AFM cantilevers as mechanical sensors T2 - Nano-Seminar am NanoSYD-Institut der süddänischen Universität in Sonderborg CY - Sonderborg, Denmark DA - 2008-12-02 PY - 2008 AN - OPUS4-18266 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Solomun, Tihomir A1 - Schimanski, A. A1 - Sturm, Heinz A1 - Illenberger, E. T1 - Reactions of amide group with fluorine as revealed with surface analytics N2 - Thin polyamide-6 films were exposed to fluorine gas and analysed with photoelectron and infrared spectroscopies. Fluorine cleaves the amide C–N bond resulting in the formation of the –COOH and –NF2 terminal groups. This is evident from large shifts in the N1s binding energy (+5 eV) and C=O stretching frequency (~80 cm-1), appearance of ester oxygen in the XPS spectra, as well as by the 19F nmr spectra of volatile products consistent with a terminal NF2 group. KW - Gasfluorierung KW - Polyamid-6 KW - XPS KW - IR KW - -COOH und NF2-Gruppen PY - 2004 UR - http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235231%232004%23996109995%23499295%23FLA%23&_cdi=5231&_pubType=J&_auth=y&_acct=C000049503&_version=1&_urlVersion=0&_userid=963821&md5=baea8e0df63660c666921ef377c00e40 SN - 0009-2614 SN - 1873-4448 VL - 378 SP - 312 EP - 316 PB - North-Holland Publ. Co. CY - Amsterdam AN - OPUS4-3439 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Solomun, Tihomir A1 - Seitz, H. A1 - Sturm, Heinz T1 - DNA damage by low-energy electron impact: dependence on guanine content KW - DNA oligonucleotide KW - Low energy electrons KW - Secondary electrons KW - Damage KW - Guanine content PY - 2009 DO - https://doi.org/10.1021/jp905263x SN - 1520-6106 SN - 1089-5647 VL - 113 IS - 34 SP - 11557 EP - 11559 PB - Soc. CY - Washington, DC AN - OPUS4-20704 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Nichtlinearität und Hysterese von AFM-Piezos T2 - 24th Intern. TopoMetrix-Workshop: Aktuelle Entwicklungen in der Nanotechnologie und Rastersondenmikroskopie, Humboldt-Universität CY - Berlin, Germany DA - 1998-03-12 PY - 1998 AN - OPUS4-6462 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Lithography on Polymers using a Scanning Force Microscope (SFM) and a Environmental Scanning Electron Microscope (ESEM) T2 - Seminar International PhD Program CY - Berlin, Germany DA - 2004-04-30 PY - 2004 AN - OPUS4-3504 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Rastersondenverfahren T2 - BAM, DGM Fachausschuss "Gefüge und Eigenschaften von Polymerwerkstoffen" CY - Berlin, Germany DA - 2003-12-05 PY - 2003 AN - OPUS4-4099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Heinz T1 - Dynamics of phase transitions in polymer thin films upon single femtosecond laser pulse irradiation T2 - Second International Conference on Photo-Induced Phase Transitions Cooperative, non-linear and functional properties CY - Rennes, France DA - 2005-05-24 PY - 2005 AN - OPUS4-7430 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sturm, Heinz A1 - Schulz, Eckhard T1 - Atomic force microscopy with simultaneous AC conductivity contrast for the analysis of carbon fibre surfaces KW - Carbon fibre KW - Surface analysis KW - Conductivity microscopy KW - Scanning force microscopy KW - Scanning tunneling microscopy KW - Fiber surfaces PY - 1996 SN - 1359-835X VL - 27 IS - 9 SP - 677 EP - 684 PB - Elsevier CY - Oxford AN - OPUS4-6849 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munz, Martin A1 - Sturm, Heinz A1 - Schulz, Eckhard T1 - Zuverlässigkeit von Polymer-Werkstoffen - Interphasen nanoskopisch betrachtet T2 - 3. Workshop "Rasterkraftmikroskopie in der Werkstoffwissenschaft" CY - Berlin, BAM, Deutschland DA - 2002-02-28 PY - 2002 SP - 14 AN - OPUS4-1831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -