arXiv subjects

Robinson L. Smith

Publications and source records attributed to Robinson L. Smith.

3 recordsLinked to original sources

arXiv2017

Infrared properties of micromachined vanadium oxide thin films

This paper discusses questions of synthesizing and pressing vanadium oxides to create film-forming materials that can be used in producing optical coatings. Based on the film-forming materials thus created, technological processes have been developed for fabricating coatings from vanadium dioxide by two methods of producing thin films: vacuum evaporation and magnetron sputtering. Questions of using films made from vanadium oxide in optical instrumentation are considered.

cond-mat.mtrl-sci↗

arXiv2016

Nanoscale force sensor and actuator with carbon-nanotube network

Actuators at the nanoscale are assuming great important in todays shrinking electronics industry where a system-on-chip approach is used to integrate multi-functional systems and devices. Integration of sensors, actuators, information processing, and storage have become extremely important, more so at the sub-micrometer scale. Here we utilized vertically aligned carbon nanotube forests bonded onto a piezoelectric substrate to provide sensing of nanoscale forces and actuation on the same platform. This is a demonstration of integration of two important functions using the functionality of nanomaterials. This has immediate utility in many areas including outer space exploration, portable consumer electronics, embedded systems, etc.

cond-mat.mes-hall↗

arXiv2016

Resonant optical gating of suspended carbon nanotube transistor

Building smaller transistors with enhanced functionality is critical in extending the limits of Moores law and meeting the demands of the electronics industry. Here we demonstrate transistor operation in a suspended single carbon nanotube (CNT) using feedback-enabled radiation pressure of a near-field focused laser that enabled significant changes in conductivity of the CNT. Further, using in-situ tip-enhanced Raman spectroscopy, we show that the change in conductivity of over five orders in magnitude is accompanied by self-induced defect states within the CNT. The entire structure is less than 10 nm in dimension and shows promise of scalability. This is a novel method for achieving logic operations at the nanoscale.

cond-mat.mes-hall↗