US – Page 265 – TechConnect Briefs

Micrwave based microfluidic sensor

Tanbakuchi H., Bynum M., Brennen R., Whitener M., Agilent Technologies, US

SPR ( surface Plasmon Resonance) is an non destructive sensor capable of measuring the changes in refractive index above the gold surface (~300 nm) .The advantage of the SPR is in its capability of looking [...]

Robust Fingerprint Identification System Using Backpropagation and ART Neural Networks

Ilumoka A.A., Talluri M., Eng M., UNIVERSITY OF HARTFORD, US

This paper describes a robust minutiae-based fingerprint identification method suitable for use in small populations. System employs two serially connected neural networks in which fingerprint feature extraction is carried out by the first network – [...]

Agent Reactive Modulated Optical Reflector for Hazardous Agent Detection

Kovalev A.E., Bray M.G., Mayer T.S., Werner D.H., Pennsylvania State University, US

We demonstrate a standoff passive sensor working in the near infrared range. The device uses a platform based on dielectric and metallo-dielectric layers. The sensor demonstrated a significant change in the reflection coefficient if exposed [...]

Polysilicon Nano-wires Based Nano-device on Silicon Chip: Fabrication and its Application

Mishra N.N., Winterrowd P., Nelson R., Maki G., Maki W.C., Rastogi S.K., Cameron E., Filanoski B., Maki G., Maki W.C., University of Idaho, US

5x5 arrays of six nano-transistor devices were fabricated on p-type silicon/silicon oxide (200nm) wafers with resistivity 1-100 -cm. 50nm of doped polysilicon were deposited and annealed to make nanowires. All nanowires were made with direct [...]

Polymer nanocomposite based chemiresistive gas sensors

Meka D.A., George L.A., Prasad S., Portland State University, US

We present here the development of a polymer nanocomposite based gas sensor for detecting trace gas emissions in ambient environment. This project is aimed to build a chemiresistive gas sensor with excellent sensitivity and improved [...]

Identification of bacterial susceptibility to antibiotics using gold nanoparticles

Perez J.M., Kaittanis C., Nath S., University of Central Florida, US

Inexpensive and rapid methods for detecting bacterial infections and their corresponding susceptibility to antibiotics are desperately needed. The determination of which antibiotic to use and its administration at dosages that will effectively suppress bacterial growth [...]

Micro-Retroreflectors in Immunoassays and Biosensors

Kemper S.M., Sherlock T., Knoop J.D., Cacao E., Ruchhoeft P., Atmar R.L., Willson R.C., University of Houston, US

Many current bioanalytical and diagnostic methods rely on labeling the species of interest and specialized detection equipment to monitor the label. Common techniques suffer from signal loss or degradation and require the use of equipment [...]

Selective Identification of proteins by laser desorption ionization mass spectrometry on photonic nanodevices coupled to abiotic receptors

Meagley R.P., ONE Nanotechnologies, LLC, US

Matrix Assisted Laser Desorption Ionization Mass Spectroscopy (MALDI MS) is a particularly efficient tool for proteomics research and diagnostics with protein biomarkers. Recent innovations in the application of inorganic matrices have enabled a reduction in [...]

DNA Amplification by PCR using Low cost, Programmable Microwave Heating

Garg P., Hella M., Borca-Tasiuc D.-A., Mohamed H., Rensselaer Poytechnic Institute, US

This work presents a low power microstrip transmission line PCR thermo-cycler based on microwave heating that is designed for low-budget, portable/Point of Care (POC) genetic analysis. Previous efforts on miniaturized PCR chambers focused mainly on [...]

A Comparative Analysis of Iridium Oxide Nanowires in Electrical Detection of Biochemical Reactions

Venkatraman V.L., Reddy R.K., Zhang F., Hsu V., Ulrich B., Prasad S., Portland State University, US

Pt, Ir, Au and few other precious metals have highly conducive electrical and chemical properties; hence have been widely used in pH sensors and biomolecular sensing applications. The chief objective of this research is to [...]