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Nano 6H Diamond Polytype Polycrystalline Powder

Ownby P.D., University of Missouri-Rolla, US

In 1967, "Hexagonal diamond - a new form of carbon" was reported to be found in meteorites. This hexagonal form, 2H, was named Lonsdaleite, after the noted crystallographer, Kathleen Lonsdale. Since the corrected structures and [...]

Defects and Fault Characterization in Quantum Cellular Automata

Baradaran Tahoori M., Momenzadeh M., Huang J., Lombardi F., Northeastern University, US

In this paper, a detailed simulation-based characterization of QCA defects and study of their effects at logic-level are presented. Different defect mechanisms for QCA active devices and interconnects are considered and the appropriate fault models [...]

A Nanoscale Electromechanical Contact Switch for Logic Applications

Huang C-C, Ekinci K.L., Boston University, US

Here, we describe the operation of a nano-electro-mechanical contact switch. The switch design relies on a sharp contact tip integrated to a compliant nanomechanical beam. When the beam is actuated electrostatically, the tip establishes intimate [...]

Displacement Detection using Quantum Mechanical Electron Tunneling in Micro and Nano-electro-mechanical Systems

Taylor D., Ekinci K., Boston University, US

Micro-electro-mechanical systems (MEMS) and, more recently, nanoelectromechanical systems (NEMS) are emerging as candidates for a number of important technological applications — such as ultra-fast actuators, sensors, and high frequency signal processing components. Experimentally, they are [...]

On the Design of SET Adders

Sulieman M., Beiu V., Washington State University, US

Single-Electron-Technology (SET) is one of the future technologies distinguished by its small and low power devices. Among others, SET provides simple and elegant solutions for implementing threshold logic gates (TLG).One of the SET-TLG logic circuits [...]

Metal-Insulator-Metal Ensemble (MIME) Chemical Detectors

Smardzewski R.R., Jarvis N.L., Snow A.W., Wohltjen H., Mackay R.A., Edgewood Chemical Biological Center, U.S. Army SBCCOM, US

A new class of nanometer-scale, low power, solid-state devices is being investigated for the detection of hazardous vapors. These chemical vapor sensors are comprised of nanometer-sized gold particles encapsulated by monomolecular layers of alkanethiol surfactant [...]

Thermal Noise Response Based Static Non-Contact Atomic Force Microscopy

Gannepalli A., Sebastian A., Salapaka M.V., Cleveland J., Iowa State University, US

Micro-cantilever based devices have revolutionized imaging and they are the primary tools for investigation and control of matter at the nanoscale. In this paper a novel approach based on the thermal noise response of the [...]

A New Wet Chemical Approach to the Selective Synthesis of Silver Nanowires

Hernandez E.A., Posada B., Irizarry R., Castro M.E., The University of Puerto Rico, US

A new wet chemical approach is presented for the selective synthesis of silver nanowires based on the assembly of silver nanoparticles covered with a bi-functional thiol. The particles are formed spontaneously upon the addition of [...]

Single Wall Carbon Nanotube-Based Structural Health Monitoring Sensing Materials

Watkins A.N., Ingram J.L., Jordan J.D., Wincheski R.A., Smits J.M., Williams P.A., NASA Langley Research Center, US

Single-wall carbon nanotube (SWCNT)-based materials represent the future aerospace vehicle construction material of choice based primarily on predicted strength-to-weight advantages and inherent multifunctionality. As such, it is prudent to pursue the development of SWCNT-based sensing [...]

Numerical Simulation of Electronic Properties in Quantum Dot Hheterostructures

Vlahovic B., Filikhin I., Suslov V.M., Wang K., North Carolina Central University, US

Because of the strong dependence of energy level on the geometry and sizes, the quantum dots are perfect candidates as high efficiency photovoltaic solar cells. Efficiency of 63.2% solar cell has been predicted by theoretical [...]