Chemical, Physical & Bio-Sensors – Page 16

Optimization of Phage-Based Magnetoelastic Biosensor Performance

Huang S., Yang H., Johnson M., Wan J., Chen I., Petrenko V.A., Chin B.A., Auburn University, US

A magnetoelastic (ME) platform coated with a bio-molecular recognition element (bacteriophage) for selective and specific recognition of Bacillus anthracis spores is described. ME materials have a mass-sensitive, characteristic, resonant frequency. In response to the binding [...]

Instantaneous Microbial Detection Demonstrated for Air & Water

Jiang J.P., McGill S., Morris S., BioVigilant Systems, Inc., US

Traditionally, growth based techniques have been the standard in environmental monitoring for evaluating the quality and quantity of microbial content. However, many studies have underscored the inadequacy of these techniques: (1) to provide environmental microbial [...]

Label-free and Real-Time Photonic Band-Gap Silica Nanosensor

Chyan J.Y., Yang S.C., Yeh J.A., National Tsing Hua University, TW

A photonic band-gap nanosensor based on porous silica is proposed in the study. The photonic band-gap silica nanosensor is easy to fabricate and simple to use. Its optical characteristics can be easily modulated by electrochemical [...]

Identification of PCR Product by double-strand DNA Denaturation using Label-free Field-effect Transistor

Han J., Chung W., Yoo K., Shim J., Samsung Advanced Institute of Technology, KR

We demonstrate an innovative method of PCR product identification that is based on thermal denaturation of PCR products which are immobilized on microbeads using integrated BioFET. Purification step was finished simply by capturing the biotinylated [...]

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 [...]

Multi-functional Wearable Device for Heart Health and Possition Assesment

Kaminska B., Simon Fraser University, CA

In this paper we introduce a wearable device combining physiological monitoring and person’s position assessment. An accelerometer is used as a multi-functional sensor for a position and heart mechanical performance measurements, known as mechanocardiography (MCG). [...]

Bacterial Concentration Detection with Dielectrophoresis and Capacitive Measurement

Yoo J-H, Cha M.S., Lee J., Seoul National University, KR

The concentration of Escherichia coli (E.coli) cells in water was detected by depositing them on an array of electrodes using dielectrophoresis (DEP). Electrowetting was used to effectively concentrate the E.coli in a droplet of water [...]

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 [...]