Sensors – Chemical, Physical & Bio – Page 10

High-sensitive, direct and label-free detection technique of nanotoxic material using QCM

Jang K., You J., Park C., Park J., Park C., Park J., Na S., Korea university, KR

For the several decades, various nanomaterials are broadly used in industrial fields, research areas and commercialized products. Among many nanomaterials, silver ion, carbon nanotube, ZnO, and mercury ion etc are of the widely used nanomaterial [...]

In Situ Health Monitoring of Piezoelectric Sensors

Jensen S.L., NASA - Stennis Space Center, US

The technology developed is an in-situ measurement system for monitoring the performance of piezoelectronic sensors, particularly accelerometers. With this technology, characteristics such as resonant frequency, response, cable status, connectivity, bonding and linear range, can be [...]

A Nanobiomimetic Neuronal Memcapacitor Serves as a Voltage Sensor and an Amperometry Sensor for Reagent-less Direct Detection of Sub pM Soluble Amyloid-beta

Duh S-H, Thornton J., Kissinger P.T., Chen E.T., Advanced Biomimetic Sensors, Inc., US

Amyloid-beta (A) plaque accumulation in the brain has been recognized to be associated with Alzheimer’s and dementia. Challenges of quantitation of Ab are the instability of soluble Ab1-42 and the protein interference plus the time [...]

Multilayer optical strip for illumination, imaging and analysis

Gomez-Gonzalez E., Marquez-Rivas J., Perales-Esteve M.A., Mayorga-Buiza M.J., University of Seville, ES

An optical device (multilayer optical strip, MOS) is presented. It is composed of a small-sized, strip-shaped, multilayer, planar structure connected to a control unit. Active and passive optical elements allow for controlling the properties, spatial [...]

Enhanced Kinetics of Enzymatic Nanosensors

Breger J., Walper S., Ancona M., Stewart M., Susumu K., Medintz I., Naval Research Laboratory, US

Nanosensors employing quantum dots (QDs) and functional moieties such as enzymes are promising for diagnostics and chemical/biological threat activity. Their small size permits cell penetration and their inherent photochemical properties are well-suited for rapid, optical [...]

Beyond Biomarkers: Array-Based Profiling for Diagnostics and High-Throughput Screening

Rotello V., University of Massachusetts Amherst, US

The "chemical nose/tongue" approach presents a potential alternative to specific recognition and separations techniques. In this approach a sensor array is generated to provide differential interaction with analytes via selective receptors, generating a stimulus response [...]

The influence of electrode on sensitivity of pH sensors fabricated on AlGaN/GaN heterostructures

Lee C.T., Jung S.M., Shin M.W., Yonsei University, KR

In this work, we evaluated relationship between specific contact resistance and sensitivity of pH sensor by changing the ohmic contact metallization consisted of source and drain. The sample was fabricated for analysis of electrical characteristics [...]

Cyanide Detection by Highly Modified Sol-Gel Biocomposite Sensor

Mozneb S., Lai J.C.K., Leung S.W., Idaho State University, US

Cyanide is an important industrial chemical but is also very toxic. Cyanide binds strongly with hemoglobin than that of oxygen which causes histoxic hypoxia, if cyanide is ingested into the bloodstream. This pairing reaction can [...]

Environmental Health Science and SBIR/STTR Small Business Grants

Shaughnessy D., Henry H., Ahlmark K., Mease K., Balshaw D., NIH, US

The NIEHS sets aside a percentage of extramural funds to support technology development for environmental health research through Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) grants. SBIR/STTR technologies supported by NIEHS [...]

A fluorescent nanosensor base on magnetic silica nanoparticles as illicit drug vapor logic gate

Rouhani S., Institute for Color Science and technology, IR

Herein we report a fluorescent nanosensor base on magnetic silica nanoparticle as illicit drug logic gate. A novel naphthlimide derivative was synthesized (F) , characterized and doped into the magnetic silica nanoparticles (Fe3O4@SiO2-F). Herein we [...]