US – Page 17 – TechConnect Briefs

Using Nanoparticle Scaffolds to Probe and Enhance the Catalytic Activity of Single and Coupled Enzyme Systems

Hastman D., Chiriboga M., Medintz I., U.S. Naval Research Laboratory, US

The use of nanoparticle (NP) scaffolds for enzymatic systems has proven to be a useful tool for sensing specific enzyme activity as well as enhancing the catalytic rates of these systems. Although, NP-induced enhancement has [...]

A Programmable Transmission Electron Detector for Nanomaterials Characterization in a Scanning Electron Microscope

Holm J., Caplins B., Keller R., National Institute of Standards and Technology, US

A new programmable detector for scanning transmission electron microscopy (p-STEM) is described. A digital micromirror array lies at the heart of the detector and serves as a programmable virtual objective aperture. Two sensors, a photomultiplier [...]

Determining Elastic-Plastic Material Properties Using Instrumented Indentation Test and Finite Element Simulation

Promer D.R., Najafabadi Z.S., Kim J., Kujawski D., Western Michigan University, US

A new technique that can determine the elastic-plastic properties of metallic materials using the instrumented indentation test and finite element simulation is developed. This non-destructive technique can be applied to additively manufactured and/or surface treated [...]

Curvature Change Analysis of SMART Fibers used for Temperature Adaptive Insulation

Latulippe A., Ripa C., Sun H., Fossey S., Drew C., University of Massachusetts-Lowell, US

A thermally adaptive insulation has previously been developed by the US Army. The insulation is designed to expand at lower temperatures and shrink at higher temperatures. This is accomplished using multi-component polymer fibers that are [...]

Characterization of Magnesium Silicide Stannide Powder for use in Selective Laser Melting

Gray R., LeBlanc S., The LeBlanc Lab, US

This study examines magnesium silicide stannide (Mg2Si0.4Sn0.6) powder, a thermoelectric material optimal for high temperature applications. Powder morphology and particle size distribution were analyzed through optical microscopy and the image analysis software FIJI. The ability [...]

Unified Compact Model for Gate All Around FETs- Nanosheets, Nanowires, Multi Bridge Channel MOSFETs

Kushwaha P., Duarte J.P., Lin Y-K., Agarwal H., Chang H-L, Sachid A., Salahuddin S., Chauhan Y.S., Hu C., University of California Berkeley USA, US

FinFET is in mass production for its capability of scaling below 20nm. Thin silicon Fin surrounded by gate provides a superior channel electrostatics resulting in higher on current (Ion) and better subthreshold swing. The same [...]

Experiment and Model for Distance-Dependent Mismatch

Lu N., Zamdmer N., Wachnik R., IBM, US

We study distance-dependent mismatch and spatial correlation problems both experimentally and theoretically. The two problems are intimately connected. We present our hardware results and, using the relationship between mismatch and correlation, show that the relationship [...]

Real-Time Density Functional Tight Binding: A New Computational Tool for Probing Electronic Properties of Plasmonic Systems

Ilawe N.V., Wong B.M., University of California Riverside, US

Light-harvesting systems and plasmonic materials continue to garner significant attention due to their importance in both energy conversion and sensitive detection technologies. However, several challenges exist in improving their performance: these electronic multifunctional systems are [...]

Electrochemical Nanoimprinting of Silicon: A Direct Patterning Approach

Azeredo B., Arizona State University, US

Soft-lithography and nanoimprinting lithography have been critical in manufacturing 3D features with sub-20 nm resolution onto polymeric materials which have often been employed for producing micro and nanoscale optical materials and surfaces. However, methods for [...]

Numerical Modelling of a Sinusoidal Grating-Based Surface Plasmon Coupled Emission Biosensor

Sukhotskiy V., Cady N.C., Reddy I.V.A.K., Furlani E.P., University at Buffalo (SUNY), US

We present a full-wave computational model to study the optical behavior of a versatile sinusoidal grating-based surface plasmon-coupled emission (SPCE) biosensor. Surface plasmons (SPs) are coherent oscillations of conduction electrons on a metal surface excited [...]