Conductance and Configuration of Molecular Gold-Water-Gold Junctions under Electric Fields
نویسندگان
چکیده
منابع مشابه
Structural Origins of Conductance Fluctuations in Gold-Thiolate Molecular Transport Junctions.
We report detailed atomistic simulations combined with high-fidelity conductance calculations to probe the structural origins of conductance fluctuations in thermally evolving Au-benzene-1,4-dithiolate-Au junctions. We compare the behavior of structurally ideal junctions (where the electrodes are modeled as flat surfaces) to structurally realistic, experimentally representative junctions result...
متن کاملQuantitative interpretation of the transition voltages in gold-poly(phenylene) thiol-gold molecular junctions.
The transition voltage of three different asymmetric Au∕poly(phenylene) thiol∕Au molecular junctions in which the central molecule is either benzene thiol, biphenyl thiol, or terphenyl thiol is investigated by first-principles quantum transport simulations. For all the junctions, the calculated transition voltage at positive polarity is in quantitative agreement with the experimental values and...
متن کاملFormation of Molecular-Scale Gold Nanogap Junctions via Controlled Electromigration
We have used a feedback method to control the electromigration of gold nanowires to form nanogap junctions, similar to recent reports [1, 2]. We have studied gold wires fabricated with conventional electron-beam and photolithography on thick SiO2 and thin Al2O3 (over Al) substrates. We find that the role of feedback mechanism is to control the local temperature of the electromigrating nanowire,...
متن کاملStretching of BDT-gold molecular junctions: thiol or thiolate termination?
It is often assumed that the hydrogen atoms in the thiol groups of a benzene-1,4-dithiol dissociate when Au-benzene-1,4-dithiol-Au junctions are formed. We demonstrate, by stability and transport property calculations, that this assumption cannot be made. We show that the dissociative adsorption of methanethiol and benzene-1,4-dithiol molecules on a flat Au(111) surface is energetically unfavor...
متن کاملGold-gold sulfide nanoshell as a novel intensifier for anti-tumor effects of radiofrequency fields
Objective(s):Several studies have been carried out to investigate the effect of various nanoparticles exposed to radiofrequency (RF) waves on cancerous tissues. In this study, a colon carcinoma tumor model was irradiated by RF in the presence of gold-gold sulfide (GGS) nanoshells. Materials and Methods: Synthesis and characterization of GGS nanoshells were initially performed. CT26 cells were ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Matter
سال: 2020
ISSN: 2590-2385
DOI: 10.1016/j.matt.2020.03.023