The heat conduction along a single walled carbon nanotube (SWNT)[1-4] was simulated by the molecular dynamics method with the Tersoff-Brenner bond order potential [5,6]. One of the purposes of this study is to clarify the thermal conductivity of carbon nanotubes, which is speculated to be higher than any other material along the cylindrical axis. Very recently, measurements of thermal conductiv...

Heat conduction of finite length single walled carbon nanotubes (SWNTs) was simulated by the molecular dynamics method with Tersoff-Brenner bond order potential. Temperature at each end of a SWNT was controlled by the phantom technique, and the thermal conductivity was calculated with Fourier’s law from the measured temperature gradient and the energy budgets in phantom molecules. The measured ...

Because all quantities associated with a given atom are known as a function of time, molecular dynamics simulations can provide unparalleled insight into dynamic processes. Many quantities calculated from simulations can be directly compared to experimental values, while others provide information not available from experiment. For example, the tilt and methyl angles of chains within a self-ass...

This paper explores the effect of the depth-of-cut of an indenter on the phase transformations during nanoscratching on monocrystalline silicon on the Si(100) orientation. The analysis was carried out by molecular dynamics simulations. It was found that the depth-of-cut and the impingement direction of the indenter had a significant influence on the phase transformations in the initial impressi...

Reproducible fabrication of Scanning Tunneling Microscope tips is carried out following an electrochemical procedure widely reported. Tips are made from 0.5 diameter tungsten wire. Controlling fabrication parameters (immersion in the electrochemical solution, current-voltage ranges, duration of the process, among others) we achieve aspect ratios of 0.68 and tip radii of 330 nm in the best case....

Miniaturization by bottom-up approaches to length scales beyond the current semiconductor processing technology has generated tremendous research efforts in the areas of synthesis, characterization, and assembly of novel nanoscale materials such as quantum dots and wires.1,2 Single-walled carbon nanotubes (SWNTs) are one-dimensional (1D) molecular wires ideally suited for elucidating basic phen...

Photonic signal processing requires efficient on-chip light sources with higher modulation bandwidths. Today’s conventional fastest semiconductor diode lasers exhibit modulation speeds only on the order of a few tens of GHz due to gain compression effects and parasitic electrical capacitances. Here we theoretically show an electrically-driven carbon nanotube (CNT)-based laser utilizing strong l...

Much of the hype around nanotechnology relies on the notion that it is novel and revolutionary. A large part of that in turn relies on the purportedly revolutionary ability of the Scanning Tunneling Microscope to manipulate individual atoms. However, novelty always involves a comparison of similarity and difference with what came before. Furthermore, the novelty of the STM was negotiated and re...