@inproceedings{NickQuednauSarwaretal.2013, author = {Nick, Christoph and Quednau, Sebastian and Sarwar, Reza and Thielemann, Christiane and Schlaak, Helmut}, title = {Fabrication of high aspect ratio gold nanopillars on microelectrodes for the interface with electrogenic cells}, series = {HARMNST - 10th international workshop on high aspect ratio micro and nano system technologies, Berlin}, booktitle = {HARMNST - 10th international workshop on high aspect ratio micro and nano system technologies, Berlin}, pages = {212 -- 213}, year = {2013}, subject = {Mikroelektrode}, language = {de} } @inproceedings{NickJoshiSchlaaketal.2011, author = {Nick, Christoph and Joshi, Ravi and Schlaak, Helmut and Schneider, J{\"o}rg and Thielemann, Christiane}, title = {Multi electrode array with carbon nanotube electrodes for the extra-cellular detection of action potentials}, series = {MikroSystemTechnik Kongress 2011, Darmstadt}, booktitle = {MikroSystemTechnik Kongress 2011, Darmstadt}, year = {2011}, subject = {Mehrfachelektrode}, language = {en} } @inproceedings{NickQuednauSarwaretal.2013, author = {Nick, Christoph and Quednau, Sebastian and Sarwar, Reza and Thielemann, Christiane and Schlaak, Helmut}, title = {Gold-Nanodr{\"a}hte auf Mikroelektroden zur extrazellul{\"a}ren Ableitung elektrogener Zellen}, series = {Mikrosystemtechnik Kongress}, booktitle = {Mikrosystemtechnik Kongress}, publisher = {VDE Verlag}, address = {Aachen, Deutschland}, year = {2013}, subject = {Mikroelektrode}, language = {de} } @inproceedings{NickSchlaakThielemann2014, author = {Nick, Christoph and Schlaak, Helmut and Thielemann, Christiane}, title = {PEDOT:PSS coated Gold Nanopillar Micro-electrodes for Neural Interfaces}, series = {4th International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale}, volume = {2014}, booktitle = {4th International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale}, address = {Taipeh, Taiwan}, year = {2014}, subject = {Mikroelektrode}, language = {en} } @inproceedings{NickLippertQuednauetal.2014, author = {Nick, Christoph and Lippert, Paul and Quednau, Sebastian and Schlaak, Helmut and Thielemann, Christiane}, title = {Gold Nanopillar Microelectrodes on Low Temperature Curing Polyimide for the Interface with Electrogenic Cells}, series = {Middle East Conference on Biomedical Engineering}, volume = {2014}, booktitle = {Middle East Conference on Biomedical Engineering}, address = {Doha, Qatar}, isbn = {978-1-4799-4799-7}, pages = {55 -- 58}, year = {2014}, subject = {Mikroelektrode}, language = {en} } @article{NickSchlaakThielemann2015, author = {Nick, Christoph and Schlaak, Helmut and Thielemann, Christiane}, title = {Simulation and Measurement of Neuroelectrodes' Characteristics with Integrated High Aspect Ratio Nano Structures}, series = {AIMS Journal}, volume = {2015}, journal = {AIMS Journal}, number = {2}, doi = {10.3934/matersci.2015.3.189}, pages = {189 -- 202}, year = {2015}, abstract = {Improving the interface between electrodes and neurons has been the focus of research for the last decade. Neuroelectrodes should show small geometrical surface area and low impedance for measuring and high charge injection capacities for stimulation. Increasing the electrochemically active surface area by using nanoporous electrode material or by integrating nanostructures onto planar electrodes is a common approach to improve this interface. In this paper a simulation approach for neuro electrodes' characteristics with integrated high aspect ratio nano structures based on a point-contact-model is presented. The results are compared with experimental findings conducted with real nanostructured microelectrodes. In particular, effects of carbon nanotubes and gold nanowires integrated onto microelectrodes are described. Simulated and measured impedance properties are presented and its effects onto the transfer function between the neural membrane potential and the amplifier output signal are studied based on the point-contact-model. Simulations show, in good agreement with experimental results, that electrode impedances can be dramatically reduced by the integration of high aspect ratio nanostructures such as gold nanowires and carbon nanotubes. This lowers thermal noise and improves the signal-to-noise ratio for measuring electrodes. It also may increase the adhesion of cells to the substrate and thus increase measurable signal amplitudes.}, subject = {Neuronales Netz}, language = {en} } @article{NickQuednauSarwaretal.2013, author = {Nick, Christoph and Quednau, Sebastian and Sarwar, Reza and Schlaak, Helmut and Thielemann, Christiane}, title = {High Aspect Ratio Gold Nanopillars on Microelectrodes for Neural Interfaces}, series = {Microsystem Technologies Media}, journal = {Microsystem Technologies Media}, number = {20/10-11}, issn = {0946-7076}, pages = {1849 -- 1857}, year = {2013}, subject = {Neuronales Netz}, language = {en} }