Related Experiment Video
Updated: Jun 18, 2026

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
Published on: December 7, 2015
Bias-dependent amino-acid-induced conductance changes in short semi-metallic carbon nanotubes
G B Abadir1, K Walus, D L Pulfrey
1Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, V6T1Z4, Canada. gabadir@ieee.org
Abstract:
We study the interaction between short semi-metallic carbon nanotubes and different amino acids using molecular dynamics and ab initio (density functional theory/non-equilibrium Green's function) simulations. We identify two different mechanisms of nanotube conductance change upon adsorption of amino acids: one due to the change of the coordinates of the nanotube arising from van der Waals forces of interaction with the adsorbed amino acid; and one due to electrostatic interactions, which appear only in the case of charged amino acids. We also find that the transport mechanism and the changes in the conductance of the tube upon amino acid adsorption are bias dependent.
Related Concept Videos
Biasing of Metal-Semiconductor Junctions
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Biasing of FET
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...
Debye–Huckel–Onsager Conductance Equation

