The authors study the electronic response of two simple molecular devices to a bichromatic field, where the device acts as a mixer. Two closely related model systems are considered: one is a benzene molecule and the other is a single grapheme sheet, and in both cases the systems are connected to three polyacetylene chains. The electronic response to the dichromatic alternating electric fields i...

A model for the calculation of the inelastic contribution to the low-bias electron transport in molecular junctions is presented. It is an extension to the inelastic case of the Green’s function approach to the calculation of the conduction of such systems. The model is suited for the calculation in the off-resonance regime ~where molecular levels are far from the Fermi energy! and in the low b...

The blackbody infrared radiation induced dissociation of methyl benzoate (C8H8O2(+*)) radical cation was investigated by using a Fourier transfer ion cyclotron resonance mass spectrometer equipped with a resistively heated (wire temperatures of 400-1070 K) wire ion guide. We observed product ion branching ratios that are strongly dependent upon wire temperature. At low temperatures (670-890 K) ...

Measurements of room-temperature electronic transport in pulled metallic nanowires are presented, demonstrating that the conductance characteristics depend on the length, lateral dimensions, state and degree of disorder, and elongation mechanism of the wire. Conductance during elongation of short wires, l;50 Å, exhibits periodic quantization steps with characteristic dips, correlating with the ...

Conductive polymer fibers have the potential to take electronics to the molecular scale by allowing current to pass along a single molecule. Unfortunately, their use has been limited by difficulty in determining their mechanical properties. It is the goal of this research to develop a technique for measuring the internal friction of conductive polymer fibers. Unfortunately, I was not able to us...

The voltage and the temperature behavior of inelastic interelectrode current mediated by a short molecular wire is analyzed within a nonlinear kinetic approach that accounts for strong Coulomb repulsion between transferring electrons. When the coupling to the heat bath occurs via high-frequency vibration modes we predict a generally nonlinear current-voltage characteristics (an Ohmic behavior a...

Recently, experiments have shown that effects arising from charging and conformational changes in a molecular wire due to an applied voltage bias can have a significant influence on the transport characteristics of the system. We introduce a tractable theoretical approach based on Landauer theory and total energy methods that treats transport nonlinearities, conformational changes, and charging...

Reaction of [Pt(6)(CO)(4)(P(t)Bu(2))(4)Cl(2)] with excess HS(CH(2))(4)SH in Et(2)NH gave highly stable [Pt(6)(CO)(4)(P(t)Bu(2))(4){S(CH(2))(4)SH}(2)], which adsorbs unchanged onto gold surfaces. This permitted the fabrication and electrical characterisation of gold|molecule|gold junctions involving a well-defined metal carbonyl cluster compound.

This paper outlines a design paradigm for molecular scale electronic systems. The contrast between the present bulk devices and potential molecular systems is presented along with the limitations of using bulk design philosophies for molecular-sized components. For example, the overwhelming considerations of heat dissipation on molecular scale electronic architectures are shown which demonstrat...

Today, a consensus that DNA working as a molecular wire shows promise in nanoscale electronics is reached. Considering that the "ON-OFF" switch is the basis of a logic circuit, the switch of DNA-mediated charge transport (DNA CT) should be conquered. Here, on the basis of chemical or electrochemical deposition and stripping of DNA-templated copper nanoclusters (CuNCs), we develop an "ON-OFF" na...