Papers – Page 19 – TechConnect Briefs

Highly Photo-Stable Type-I PbSe/SnSe and PbSe/SnS Colloidal Core/Shell Quantum Dots

Shan J., van Veggel F.C.J.M., Raudsepp M., Pattantyus-Abraham A.G., Young J.F., University of Victoria, CA

In an effort to improve photo-stability of IV-VI PbSe and PbS quantum dots (QDs) for application of infrared-based devices, we have synthesized type I core/shell colloidal QDs with PbSe and PbS as the cores, and [...]

Influence of Hole size on Extraordinary Transmission through Periodic Perforated Hole Arrays

Tsai M-W, Chuang T-H, Lee S-C, Electronic Engineering, TW

In order to investigate the surface charge field on periodic metal arrays

II-VI Semiconductor Quantum Wire Fabrication and Application to IR Detection

Crouse D.T., Crouse M., Crouse D.T., Crouse M., Mahapatra S., Ikram A.A., City College of New York, US

A nanoporous alumina template has been developed that provides a practical and flexible method of fabricating semiconductor and metal nanowires on any desired substrate. In situ electrochemical techniques are used to transform this multilayer precursor [...]

Developing PbSe/PbS Core-Shell Nanocrystals Quantum Dots (NQDs) for Light Emitting NQD/Silicon Heterojunctions

Xu J., Xu S., Cui D., Xu J., Xu S., Paradee G., Zhang F., Zhu T., Pennsylvania State University, US

In order to incorporate infrared colloidal nanocrystal quantum dots into silicon matrix to develop silicon-based light emitters, we report in this paper the epitaxial growth of PbS shells over PbSe NQDs with monolayer precision. The [...]

Nanoparticle optical memory function

Soares B.F., Bashevoy M.V., MacDonald K.F., Jonsson F., Zheludev N.I., University of Southampton, UK

Light and electron-beam induced structural transformations in nanoparticles of polymorphic metals provide a paradigm for achieving resonator-less optical memory functionality with picojoule energy requirements. We demonstrate optical memory function with gallium nanoparticles grown by light-assisted [...]

Numerical Modeling of Nanoscale Silicon Photodetectors that Use Electromagnetic Resonance Modes to Enhance Performance

Crouse D., Keshavareddy P., The City College of New York, US

Several high responsivity, high bandwidth, low bit error ratio (BER) nanoscale Si photodetectors are modeled including metal-semiconductor-metal photodetectors (MSM-PD), MSM-PDs fabricated on silicon-on-insulator substrates, and avalanche photodiodes. The authors have analyzed surface plasmons and other [...]

Raman and Photoluminescence Spectroscopy Investigations of ZnO Nanostructures

Chen B., Chen C., Ng H.T., Chen B., Chen C., NASA Ames Research Center, US

One-dimensional inorganic nanowires are expected to play important roles in optoelectronic device applications. The unique properties such as grain boundary and high surface area of these nanostructures are clearly different from the corresponding bulk material. [...]

Kinetics in two Phase-Observe Interaction and Identify the Binding Parameters

Yadav V., Pandey A., University Grant Commission, IN

Kinetic and mechanistic studies of some alcohols viz., allyl, crotyl, methyl and ethyl alcohol using quinquevalent vanadium in aqueous and anionic micellar media are discussed. Oxidation follows first order kinetics with respect to [V(V)], [Substrate] [...]

Research of Fault-Tolerant Computing Using COTS Elements

Swiercz B., Makowski D., Napieralski A., Technical University of Lodz, PL

The problem of designing hardened systems is very important for modern physics. The physics experiences design in linear accelerators and synchrotrons need measurements and control devices, which are under radiation impact. This paper highlights the [...]

FPGA-based Neutron Radiation Tolerant Microcontroller

Makowski D., Jablonski G., Grecki M., Mielczarek J., Napieralski A., Technical University of Lodz, PL

The paper presents a FPGA-based neutron radiation detector using radiation sensitive SRAM as a detector. Its main component is a PIC16C57-compatible microcontroller, described in VHDL. The system has been designed using hardware redundancy, Hamming error [...]