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Full-Text Articles in Electrical and Computer Engineering
High Efficient Electrical Stimulation Of Hippocampal Slices With Vertically Aligned Carbon Nanofiber Microbrush Array, Edward D. De Asis Jr., T. D. Barbara Nguyen-Vu, Prabhu U. Arumugam, Hua Chen, Alan M. Cassell, Russell J. Andrews, Cary Y. Yang, Jun Li
High Efficient Electrical Stimulation Of Hippocampal Slices With Vertically Aligned Carbon Nanofiber Microbrush Array, Edward D. De Asis Jr., T. D. Barbara Nguyen-Vu, Prabhu U. Arumugam, Hua Chen, Alan M. Cassell, Russell J. Andrews, Cary Y. Yang, Jun Li
Electrical and Computer Engineering
Long-term neuroprostheses for functional electrical stimulation must efficiently stimulate tissue without electrolyzing water and raising the extracellular pH to toxic levels. Comparison of the stimulation efficiency of tungsten wire electrodes (W wires), platinum microelectrode arrays (PtMEA), as-grown vertically aligned carbon nanofiber microbrush arrays (VACNF MBAs), and polypyrrole coated (PPy-coated) VACNF MBAs in eliciting field potentials in the hippocampus slice indicates that, at low stimulating voltages that preclude the electrolysis of water, only the PPy-coated VACNF MBA is able to stimulate the CA3 to CA1 pathway. Unlike the W wires, PtMEA, as-grown VACNF MBA, and the PPy-coated VACNF MBA …
Contact Resistance In Carbon Nanostructure Via Interconnects, Wen Wu, Shoba Krishnan, Toshishige Yamada, Xuhui Sun, Patrick Wilhite, Raymond Wu, Ke Li, Cary Y. Yang
Contact Resistance In Carbon Nanostructure Via Interconnects, Wen Wu, Shoba Krishnan, Toshishige Yamada, Xuhui Sun, Patrick Wilhite, Raymond Wu, Ke Li, Cary Y. Yang
Electrical and Computer Engineering
We present an in-depth electrical characterization of contact resistance in carbon nanostructure via interconnects. Test structures designed and fabricated for via applications contain vertically aligned arrays of carbon nanofibers (CNFs) grown on a thin titanium film on silicon substrate and embedded in silicon dioxide. Current-voltage measurements are performed on single CNFs using atomic force microscope current-sensing technique. By analyzing the dependence of measured resistance on CNF diameter, we extract the CNF resistivity and the metal-CNF contact resistance.