@incollection{HartmannHollandtSakumaetal., author = {Hartmann, J{\"u}rgen and Hollandt, J{\"o}rg and Sakuma, F. and Khlevnoy, B. and Morozova, S.}, title = {Blackbody and other Calibration Sources, in Radiometric Temperature Measurements Part I Fundamentals}, series = {Experimental Methods in the Physical Sciences}, volume = {42}, booktitle = {Experimental Methods in the Physical Sciences}, editor = {Zhang, Z.M. and Tsai, B.K. and Machin, Graham}, publisher = {Elsevier Academic Press}, address = {Amsterdam}, isbn = {978-0-12-374021-2}, pages = {241 -- 295}, language = {en} } @article{HartmannHollandtMeindletal., author = {Hartmann, J{\"u}rgen and Hollandt, J{\"o}rg and Meindl, P. and Taubert, Dieter Richard and Werner, L.}, title = {Traceable Radiometric Calibration of Semiconductor Detectors and their Application for Thermodynamic Temperature Measurement}, series = {MAPAN - Journal of Metrology Society of India}, volume = {25}, journal = {MAPAN - Journal of Metrology Society of India}, number = {3-10}, language = {de} } @incollection{HartmannReichling, author = {Hartmann, J{\"u}rgen and Reichling, M.}, title = {Thermal transport in diamond}, series = {Properties and growth of diamond}, booktitle = {Properties and growth of diamond}, editor = {Nazar{\´e}, H. and Neves, A.J.}, publisher = {Institution of Electrical Engineers}, address = {London}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {High-temperature measurement techniques for the application in photometry radiometry and thermometry}, series = {Physics Reports}, volume = {469}, journal = {Physics Reports}, pages = {205 -- 269}, language = {en} } @incollection{HartmannBernhard, author = {Hartmann, J{\"u}rgen and Bernhard, Frank}, title = {Strahlungsthermometrie}, series = {Technische Temperaturmessung}, booktitle = {Technische Temperaturmessung}, editor = {Bernhard, Frank}, edition = {2}, publisher = {Springer}, isbn = {ISBN 978-3-642-24505-3}, language = {de} } @article{HartmannHollandtGutschwageretal., author = {Hartmann, J{\"u}rgen and Hollandt, J{\"o}rg and Gutschwager, B. and Struss, O.}, title = {Strahlungsthermometrie}, series = {Automatisierungstechnische Praxis}, journal = {Automatisierungstechnische Praxis}, number = {6}, pages = {70 -- 81}, language = {de} } @article{HartmannHollandtAnhalt, author = {Hartmann, J{\"u}rgen and Hollandt, J{\"o}rg and Anhalt, Klaus}, title = {Radiation thermometry capabilities of the PTB up to 3200 K}, series = {MEASURE}, journal = {MEASURE}, number = {3}, pages = {26 -- 34}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {New Developments in High-Temperature Measurement Techniques}, series = {International Journal of Electrical and Computer Engineering Systems}, volume = {5}, journal = {International Journal of Electrical and Computer Engineering Systems}, number = {2}, pages = {63 -- 67}, language = {en} } @article{HartmannLitorjaFowleretal., author = {Hartmann, J{\"u}rgen and Litorja, M. and Fowler, J. and Fox, N. and Stock, M. and Razet, A. and Khlevnoy, B. and Ikonen, E. and Machacs, M. and Doytchinov, K.}, title = {Final report on the CCPR-S2 supplementary comparison of area measurements of apertures for radiometry}, series = {Metrologia}, volume = {44}, journal = {Metrologia}, number = {02002}, language = {en} } @article{HartmannThomasHilletal., author = {Hartmann, J{\"u}rgen and Thomas, R. and Hill, K.D. and Steele, A.G. and Ma, C.K.}, title = {Bilateral comparison of the NRC and PTB local realizations of the ITS-90 between the silver point and 1700 °C using vacuum tungsten strip lamps as transfer standards}, series = {Metrologia}, volume = {43}, journal = {Metrologia}, number = {03003}, language = {en} } @article{HartmannAnhaltLoweetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Lowe, D. and Machin, Graham and Sadli, M. and Yamada, Y.}, title = {Thermodynamic temperature determinations of Co-C, Pd-C Pt-C and Ru-C eutectic fixed-points cells}, series = {Metrologia}, volume = {43}, journal = {Metrologia}, number = {2}, pages = {78 -- 83}, language = {en} } @article{HartmannEngertFellmuthetal., author = {Hartmann, J{\"u}rgen and Engert, J. and Fellmuth, B. and Fischer, Joachim and Hollandt, J{\"o}rg and Tegeler, E. and Seidel, J.}, title = {Die internationale Temperaturskalen}, series = {PTB Mitteilungen}, volume = {117}, journal = {PTB Mitteilungen}, number = {3}, pages = {236 -- 242}, language = {de} } @article{HartmannMaGibson, author = {Hartmann, J{\"u}rgen and Ma, C.K. and Gibson, C.}, title = {Decreasing dependence of the calibration of the tungsten strip lamp on the temperature of the lamp base with increasing filament length}, series = {Metrologia}, journal = {Metrologia}, number = {42}, pages = {383 -- 388}, language = {en} } @article{HartmannEdler, author = {Hartmann, J{\"u}rgen and Edler, F.}, title = {Simultaneous contact and non-contact measurements of the melting temperature of a Ni-C fixed-point cell}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {28}, pages = {2002 -- 2008}, language = {en} } @article{HartmannEdlerAnhalt, author = {Hartmann, J{\"u}rgen and Edler, F. and Anhalt, Klaus}, title = {Neuartige eutektische Metall-Kohlenstoff-Hochtemperaturfixpunkte f{\"u}r die Thermometrie}, series = {PTB Mitteilungen}, volume = {117}, journal = {PTB Mitteilungen}, number = {3}, pages = {256 -- 260}, language = {de} } @article{HartmannLoweAnhalt, author = {Hartmann, J{\"u}rgen and Lowe, D. and Anhalt, Klaus}, title = {Construction and validation of a platinum-carbon eutectic fixed-point}, series = {Metrologia}, journal = {Metrologia}, number = {45}, pages = {325 -- 329}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {Correct consideration of the index of refraction using blackbody radiation}, series = {Optics Express}, volume = {14}, journal = {Optics Express}, number = {18}, pages = {8121 -- 8126}, language = {en} } @article{HartmannVerhoevenReichlingetal., author = {Hartmann, J{\"u}rgen and Verhoeven, H. and Reichling, M. and M{\"u}ller-Sebert, W. and Zachai, R.}, title = {Structural limitations to local thermal diffusivity of diamond films}, series = {Diamond and Related Materials}, journal = {Diamond and Related Materials}, number = {5}, pages = {1012 -- 1016}, language = {en} } @article{HartmannMaznevReichling, author = {Hartmann, J{\"u}rgen and Maznev, A.A. and Reichling, M.}, title = {Thermal wave propagation in thin films on substrates}, series = {J. Appl. Phys}, journal = {J. Appl. Phys}, number = {78}, pages = {5266 -- 5269}, language = {en} } @article{HartmannNilssonFricke, author = {Hartmann, J{\"u}rgen and Nilsson, O. and Fricke, J.}, title = {Thermal diffusivity measurements on two-layered systems with the laser-flash method}, series = {High Temp. - High Press}, journal = {High Temp. - High Press}, number = {25}, pages = {403 -- 410}, language = {en} } @article{HartmannReichlingVoigt, author = {Hartmann, J{\"u}rgen and Reichling, M. and Voigt, P.}, title = {Quantitative thermal imaging of current densities and heat flow in electronic microstructures}, series = {Prog. in Nat. Sci.}, journal = {Prog. in Nat. Sci.}, number = {6}, pages = {519 -- 523}, language = {en} } @article{HartmannReichlingMatthias, author = {Hartmann, J{\"u}rgen and Reichling, M. and Matthias, E.}, title = {Thermoreflectance measurements of single thermal barriers in CVD-diamond}, series = {Prog. in Nat. Sci.}, journal = {Prog. in Nat. Sci.}, number = {6}, pages = {297 -- 300}, language = {en} } @article{HartmannVoigtReichlingetal., author = {Hartmann, J{\"u}rgen and Voigt, P. and Reichling, M. and Matthias, E.}, title = {Photothermal measurement of thermal anisotropy in pyrolytic graphite}, series = {Appl. Phys. B}, journal = {Appl. Phys. B}, number = {62}, pages = {493 -- 497}, language = {en} } @article{HartmannVoigtReichling, author = {Hartmann, J{\"u}rgen and Voigt, P. and Reichling, M.}, title = {Thermal wave imaging of electrically heated microstructures}, series = {J. Appl. Phys.}, journal = {J. Appl. Phys.}, number = {80}, pages = {2013 -- 2018}, language = {en} } @article{HayBeaumontLambengetal., author = {Hay, Bruno and Beaumont, Oliver and Lambeng, Nora and Cataldi, Michel and Lorrette, Christophe and Knopp, Kevin and Hartmann, J{\"u}rgen and Beckstein, Fabia and Stobitzer, Dorothea and Milošević, Nenad and Stepanic, Nenad and Wu, Jiyu and Mildeova, Petra}, title = {Inter‑laboratory Comparison on Thermal Diffusivity Measurements by the Laser Flash Method at Ultra‑high Temperature}, series = {International Journal of Thermophysics}, volume = {2023}, journal = {International Journal of Thermophysics}, pages = {44 -- 48}, abstract = {thermal diffusivity measurements by the laser flash method in the temperature range from 23 °C to 3000 °C. The main objective was to assess the variability and coherency of thermal diffusivity measurements performed at ultra-high temperatures at the European level. Three refractory materials (molybdenum, tungsten and isotropic graphite IG210) were selected for this inter-laboratory comparison, due to their high melting point. The disk-shaped specimens needed were machined from the same blocks of materials in order to reduce any potential scattering of results between participants due to inhomogeneity effects. The homogeneity of the sets of specimens was studied by the pilot laboratory (LNE) before launching the comparison process. Thermal diffusivity measurements were then carried out by the seven participants on the three materials during two successive thermal cycles up to the maximum temperatures that can be reached by the devices used. The analysis of results showed a good agreement between the participants for temperatures above 400 °C, with relative deviations within the uncertainties of measurement and lower than ± 4 \% for molybdenum, ± 5 \% for isotropic graphite and ± 9 \% for tungsten.}, language = {en} } @article{BlotevogelEgermannGoldlueckeetal., author = {Blotevogel, Thomas and Egermann, Jan and Goldl{\"u}cke, J{\"u}rgen and Leipertz, Alfred and Hartmann, Matthias and Schenk, Martin and Berckmueller, Martin}, title = {Developing Planar Laser-Induced Fluorescence for the Investigation of the Mixture Formation Process in Hydrogen Engines}, series = {SAE Paper}, journal = {SAE Paper}, number = {2004-01-1408}, language = {en} } @article{HartmannTaubertMonteetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Monte, C. and Gutschwager, B. and Baltruschat, C. and Hollandt, J{\"o}rg and Kochems, D. and K{\"u}chel, C.}, title = {The Spectral Photon Flux of the Radiometric Calibration Spectral Source for the NIRSpec Instrument of the James Webb Space Telescope}, series = {Metrologia}, journal = {Metrologia}, number = {46}, pages = {207 -- 212}, language = {en} } @article{HartmannAnhaltZelenjuketal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Zelenjuk, A. and Taubert, Dieter Richard}, title = {New PTB Set-up for the absolute calibration of the spectral responsivity of radiation thermometers}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {30}, pages = {192 -- 202}, language = {en} } @article{HartmannKrenekAnhaltetal., author = {Hartmann, J{\"u}rgen and Krenek, S. and Anhalt, Klaus and Lindemann, A. and Hollandt, J{\"o}rg}, title = {A study on the feasibility of measuring the emissivity with the laser-flash method}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {31}, pages = {998 -- 1010}, language = {en} } @article{HartmannAnhaltLindneretal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Lindner, D. and Kr{\"u}ger, U.}, title = {Camera based investigation of high-temperature fixed-points for radiometric application}, series = {Metrologia}, journal = {Metrologia}, number = {46}, pages = {260 -- 265}, language = {en} } @article{HartmannOjanenAnhaltetal., author = {Hartmann, J{\"u}rgen and Ojanen, M. and Anhalt, Klaus and Schiller, S. and Weckstr{\"o}m, T. and K{\"a}rh{\"a}, P. and Heinonen, M. and Ikonen, E.}, title = {Comparison of the radiation temperature scales between MIKES and PTB}, series = {Measurement}, journal = {Measurement}, number = {43}, pages = {183 -- 189}, language = {en} } @article{HartmannHollandtFriedrichetal., author = {Hartmann, J{\"u}rgen and Hollandt, J{\"o}rg and Friedrich, R. and Gutschwager, B. and Taubert, Dieter Richard}, title = {High-Accuracy Radiation Thermometry at the National Metrology Institute of Germany}, series = {High Temperatures - High Pressures}, volume = {35/36}, journal = {High Temperatures - High Pressures}, number = {4}, pages = {379 -- 415}, language = {en} } @article{HartmannWerner, author = {Hartmann, J{\"u}rgen and Werner, L.}, title = {Calibration and interpolation of the spectral responsivity of silicon photodiode based detectors}, series = {Sensors \& Actuators A: Physical}, journal = {Sensors \& Actuators A: Physical}, number = {156}, pages = {185 -- 190}, language = {en} } @article{HartmannWerner, author = {Hartmann, J{\"u}rgen and Werner, L.}, title = {Radiation thermometry towards the triple point of water?}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {29}, pages = {1052 -- 1065}, language = {en} } @article{HartmannVoelker, author = {Hartmann, J{\"u}rgen and V{\"o}lker, S.}, title = {Thermal management of light sources}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {32}, pages = {513 -- 522}, language = {en} } @article{HartmannFriedrichTaubertetal., author = {Hartmann, J{\"u}rgen and Friedrich, R. and Taubert, Dieter Richard and Hollandt, J{\"o}rg}, title = {Improved calibration of the spectral responsivity of interference filter radiometers in the visible and near infrared spectral range at PTB}, series = {Metrologia}, journal = {Metrologia}, number = {40}, pages = {35 -- 38}, language = {en} } @article{HartmannMoritzRothetal., author = {Hartmann, J{\"u}rgen and Moritz, W. and Roth, U. and Heyde, M. and Rademann, K. and Reichling, M.}, title = {Submicrosecond range surface heating and temperature measurement for efficient sensor reactivation}, series = {Thin Solid Films}, journal = {Thin Solid Films}, number = {391}, pages = {143 -- 148}, language = {en} } @article{HartmannVoigtReichling, author = {Hartmann, J{\"u}rgen and Voigt, P. and Reichling, M.}, title = {Measuring local thermal conductivity in polycrystalline diamond with a high resolution photothermal microscope}, series = {J. Appl. Phys.}, journal = {J. Appl. Phys.}, number = {81}, pages = {2966 -- 2977}, language = {en} } @article{HartmannFischerSeidel, author = {Hartmann, J{\"u}rgen and Fischer, J. and Seidel, J.}, title = {A non-contact technique providing improved accuracy in area measurements of radiometric apertures}, series = {Metrologia}, journal = {Metrologia}, number = {37}, pages = {637 -- 640}, language = {en} } @article{HartmannFischerJohannsenetal., author = {Hartmann, J{\"u}rgen and Fischer, J. and Johannsen, U. and Werner, L.}, title = {Analytical model for the temperature dependence of the spectral responsivity of silicon}, series = {J. Opt. Soc. Am. B}, journal = {J. Opt. Soc. Am. B}, number = {18}, pages = {942 -- 947}, language = {en} } @article{HartmannKlotzbuecherReichling, author = {Hartmann, J{\"u}rgen and Klotzb{\"u}cher, T. and Reichling, M.}, title = {Local variation of room temperature thermal conductivity in high quality polycrystalline diamond}, series = {Appl. Phys. Lett.}, journal = {Appl. Phys. Lett.}, number = {73}, pages = {756 -- 758}, language = {en} } @article{HartmannCostelloReichling, author = {Hartmann, J{\"u}rgen and Costello, M. and Reichling, M.}, title = {The influence of thermal barriers on heat flow in high quality chemical vapour deposited diamond}, series = {Phys. Rev. Lett.}, journal = {Phys. Rev. Lett.}, number = {80}, pages = {117 -- 120}, language = {en} } @article{HartmannLangerReichling, author = {Hartmann, J{\"u}rgen and Langer, G. and Reichling, M.}, title = {Thermal conductivity of thin metallic films measured with the photothermal profile analysis}, series = {Rev. Sci. Instr.}, journal = {Rev. Sci. Instr.}, number = {68}, pages = {1510 -- 1513}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {Advanced comparator method for measuring ultra small aperture areas}, series = {Meas.Sci.Techn.}, journal = {Meas.Sci.Techn.}, number = {12}, pages = {1678 -- 1682}, language = {en} } @article{JuergenArduiniManaraetal., author = {J{\"u}rgen, Hartmann and Arduini, Mariacarla and Manara, Jochen and Stark, Thomas and Ebert, Hans-Peter}, title = {Development and Evaluation of an Improved Apparatus for Measuring the Emissivity at High Temperatures}, series = {Sensors}, volume = {21}, journal = {Sensors}, number = {18}, issn = {1424-8220}, doi = {10.3390/s21186252}, abstract = {An improved apparatus for measuring the spectral directional emissivity in the wavelength range between 1 µm and 20 µm at temperatures up to 2400 K is presented in this paper. As a heating unit an inductor is used to warm up the specimen, as well as the blackbody reference to the specified temperatures. The heating unit is placed in a double-walled vacuum vessel. A defined temperature, as well as a homogenous temperature distribution of the whole surrounding is ensured by a heat transfer fluid flowing through the gap of the double-walled vessel. Additionally, the surrounding is coated with a high-emitting paint and serves as blackbody-like surrounding to ensure defined boundary conditions. For measuring the spectral directional emissivity at different emission angles, a movable mirror is installed in front of the specimen, which can be adjusted by a rotatable arrangement guiding the emitted radiation into the attached FTIR-spectrometer. The setup of the emissivity measurement apparatus (EMMA) and the measurement procedure are introduced, and the derived measurement results are presented. For evaluating the apparatus, measurements were performed on different materials. The determined emissivities agree well with values published in literature within the derived relative uncertainties below 4\% for most wavelengths.}, language = {en} } @incollection{HartmannReichling, author = {Hartmann, J{\"u}rgen and Reichling, M.}, title = {Thermal characterization of diamond materials}, series = {Properties and growth of diamond}, booktitle = {Properties and growth of diamond}, editor = {Nazar{\´e}, H. and Neves, A.J.}, publisher = {Institution of Electrical Engineers}, address = {London}, language = {en} } @inproceedings{HartmannManaraZipfetal., author = {Hartmann, J{\"u}rgen and Manara, Jochen and Zipf, Matthias and Stark, Thomas and Arduini, Mariacarla and Ebert, Hans-Peter and Tutschke, Andreas and Hallam, Andrew and Hanspal, Jagdevinder and Langley, Mark and Hodge, D.}, title = {Development of Long Wavelength Infrared Radiation Thermometry for Measurements in Gas Turbines}, address = {Darmstadt}, language = {en} } @inproceedings{HartmannKnoppLenskietal., author = {Hartmann, J{\"u}rgen and Knopp, Kevin and Lenski, Philipp and Z{\"a}nglein, Marc and Manara, Jochen and Stark, Thomas and Zipf, Matthias and Arduini, Mariacarla and Schreiber, Ekkehard and Kr{\"u}ger, U. and Schmidt, Franz and Brunner, Martin}, title = {Sensor systems for additive manufacturing}, publisher = {Key Note Lecture MSE 2018}, address = {Darmstadt}, language = {en} } @inproceedings{HartmannAnhaltHollandtetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Hollandt, J{\"o}rg and Taubert, Dieter Richard and Werner, L.}, title = {Optische Hochtemperaturmesstechnik f{\"u}r die Thermometrie, Radiometrie und Photometrie}, address = {N{\"u}rnberg}, language = {en} } @inproceedings{HartmannTaubertHollandtetal., author = {Hartmann, J{\"u}rgen and Taubert, D. and Hollandt, J{\"o}rg and Fischer, J.}, title = {Investigation of the accuracy of the ITS-90 with reference to thermodynamic temperature in the range from 400 °C to 600 °C}, address = {Chicago (USA)}, language = {en} }