TY - GEN
T1 - Electronic Transport Through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride
AU - Chryssikos, Domenikos
AU - Dlugosch, Julian M
AU - Fereiro, Jerry A
AU - Kamiyama, Takuya
AU - Sheves, Mordechai
AU - Cahen, David
AU - Tornow, Marc
N1 - Publisher Copyright: © 2021 IEEE.
PY - 2021/8/26
Y1 - 2021/8/26
N2 - Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants β∼0.13A-1 for the EGaIn top contact and ∼0.15A-1 for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state device configuration.
AB - Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants β∼0.13A-1 for the EGaIn top contact and ∼0.15A-1 for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state device configuration.
UR - http://www.scopus.com/inward/record.url?scp=85114961778&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/NANO51122.2021.9514351
DO - https://doi.org/10.1109/NANO51122.2021.9514351
M3 - منشور من مؤتمر
SN - 9781665441575
T3 - Ieee International Conference On Nanotechnology
SP - 389
EP - 392
BT - NANO 2021 - 21st IEEE International Conference on Nanotechnology, Proceedings
T2 - IEEE 21st International Conference on Nanotechnology (NANO)
Y2 - 28 July 2021 through 30 July 2021
ER -