Papers – Page 16 – TechConnect Briefs

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 [...]

Comprehensive Analysis of High Performing Electrochemical Biosensors and Their Applications

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

We have mounted 5 different biocatalysts on a sensor platform to examine the performance of this electrochemical sensing system for the detection of different biomolecules/metabolites and environmental important molecules, with such we also compared how [...]

A simple process for selective bio-functionalization of SU-8 surface for Lab-on-a-Chip applications

Srinivasan B., Chaurasia D., Vanjari S., Singh S., Indian Institute of Technology - Hyderabad, IN

SU-8 is a popular epoxy based negative photoresist developed by IBM. It has been widely used as structural material in Bio-MEMS and Lab-on-a-Chip devices due to its bio-compatible properties. SU-8 surface has hydrophobic nature. Often [...]

Determination of the bi-substrate kinetic coefficients for the beta-D-glucose- NAD-GDH enzymatic reaction

Berthier J., Cubizolles M., Laurent P., Pouteau P., Poher V., Cosnier M.L., CEA, FR

Colorimetric detection of glucose in sample liquids such as human plasma is made by using enzymatic reactions. In the multi reactional scheme, the first enzymatic reaction is determinant. Either glucose oxidase (GOX) or glucose dehydrogenase [...]

Zn(II)-Mediated Gold Nanosensors for Protein Phosphatase Assay

Lee J-O, Kim G.B., Kim Y.P., Kim G.B., Kim Y.P., Hanyang University, KR

Since gold nanoparticle (AuNP)-based colorimetric assays have been preferred for enzyme activity assay,[1] a few of attempts have been designed for the simple and rapid detection of PP activity. However, they still have drawbacks including [...]

Improving the sensitivity of Pedot:Pss modified gold electrode using gold and silver nanoparticles for Ganoderma boninense DNA detection

Dutse S.W., Yusof N.A., Ahmad H., Hussaini Adamu Federal Polytechnic, NG

The sensitivity of a designed electrochemical DNA biosensor was improved using gold and or silver nanoparticles. A gold electrode modified with a conductive nanocomposite of poly(3,4-ethylenedioxythiophen)–poly(styrenesulfonate) (Pedot-Pss) and gold or silver nanoparticles enhanced the conductivity [...]

SU-8 Based Flexure-FET Biosensor to Achieve Ultrasensitive Response

Chaurasiya D., Srinivasan B., Vanjari S., Singh S.G., Indian Institute of Technology, IN

This work presents SU-8 based Flexure-FET biosensor to achieve ultrasensitive response. Here, gate of FET is replaced with the fixed-fixed beam. Beam is biased near to pull-in instability (Vpi) and FET channel is biased in [...]