Chemical, Physical & Bio-Sensors – Page 3

Thin film-resistive gas sensor with SnO2/Au nanocomposite for hydrogen sulfide detection

Chang B-W, Ding S-J, Chen R.L.C., Hungkuang University, TW

A highly sensitive and selective H2S gas sensor has been developed by deposited a SnO2 thin film on an alumina substrate with a spin-coated method. This SnO2 sensing film was be made by a sol-gel [...]

Silica coated Magnetic Nanoparticles (SMNPs): Capture and Identification of Escherichia coli Cells using Surface Enhanced Raman Spectroscopy

Rastogi S.K., Jabal J., Zhang H., Haler K.J., Gibson C.M., Qiang Y., Aston D.E., Hurdlicka P.J., Branen A.L., University of Idaho, US

Silica coated Magnetic nanoparticles (SMNPs; SiO2/Fe3O4 + Fe2O3) were prepared by encapsulation of iron oxide NPs with silica dioxide using the sol-gel method and characterized through transmission and scanning electron microscopic imaging, magnetic hysteresis and [...]

Detecting Infectious Organisms: A Concerted Approach using Genomics, Molecular Engineering and Nano-enabled bio-MEMS Technologies

Keegan N., Spoors J., Flanagan K., Cockell S., Gendra E., Ko Ferrigno P., Hedley J., Wipat A., Harwood C., McNeil C.J., Newcastle University, UK

It is now widely accepted that a combination of nanotechnology and engineering that harnesses the full potential of genomic information through real-time predictive, preventive, point-of-care healthcare provision will lead to the next technological revolution. However, [...]

Fabrication of ITO/Gold nanoparticle/RGD peptide Composites to Enhance Electrochemical Signals from Human Neural Stem Cells

Kim T-H., Choi J.W., Sogang University, KR

Gold nanoparticles (GNP) and RGD peptide modified indium tin oxide (ITO) electrode was fabricated to enhance the electrochemical signals from neural stem cells (HB1.F3). ITO film is well-known transparent and conductive material suitable for both [...]

Antibody Immobilization on Conductive Polymer Coated Nonwoven Fibers for Biosensors

McGraw S.K., Alocilja E.C., Senecal A.G., Senecal K.J., Prata G.N., Senecal A.G., Senecal K.J., Michigan State University, US

Research is being performed to develop rapid and novel electrochemical biosensors for the detection of food pathogens at the US Army NSRDEC. The focus of the research is fiber based platforms to perform both capture [...]

Carbon Nanotube/Green Tea Composite for the Electronic Detection of Hydrogen Peroxide

Chen Y., Lee Y.D., Vedala H., Allen B.L., Star A., University of Pittsburgh, US

Single-walled carbon nanotubes (SWNTs) and their composites are ideal candidates for chemical and biological sensing application, due to their unique electronic, chemical and physical properties. Green tea, or more specifically its main antioxidant component, epigallocatechin [...]

Probing Protein-Carbohydrate Interactions using Carbon Nanotube Nanodevices for Rapid Bacterial Detection

Vedala H., Chen Y., Star A., University of Pittsburgh, US

In this work, we demonstrate novel nanoelectronics devices based on single-walled carbon nanotube field-effect transistor (NTFET) to probe the interactions between carbohydrates and their recognition proteins called lectins. These interactions are involved in a wide [...]

Capacitance-based real time monitoring of endocytosis

Lee R.M., Kim D., Kim K-M, Kim K., Kim P., Kim D., Kim K-M, Kim K., Kim P., Kim D., Kim K-M, Kim K., Kim P., Kim D., Kim K-M, Kim K., Kim P., Yun C.O., Shin J.-S., Yoo K.H., Yonsei University, KR

There exist three kinds of endocytosis; receptor mediated endocytosis, pinocytosis and phagocytosis. First, receptor-mediated endocytosis is essential for targeted gene/drug delivery to a specific cell type. Second, pinocytosis is the engulfing and digestion of dissolved [...]

Nano-ELISA using gold nanoparticle-DNA complex for the detection of pathogenic microbe

Kim H-S, Oh B.-K., Sogang Univeristy, KR

In this study, we report on the rational design of a nano-complex that consists of gold nanoparticle (AuNP), antibody, oligonucleotides and horseradish peroxidase (HRP) for the detection of pathogen. The AuNP was functionalized with a [...]

Microfluidic Neural Cell Chip for Monitoring of PCBs

Park S., Kim Y.K., Hankyong National University, KR

Rapid and reliable monitoring of persistent organic pollutants (POPs) is very important to prevent their harmful effect on environment. In this study, microfluidic device to detect polychlorinated biphenyls (PCBs), which are well known insecticide, was [...]