(Invited) Electrical Sensing and Manipulation of Cells for Cancer Electrical Therapy

H2S gas is a toxic and hazardous byproduct of the oil and gas industries. It paralyzes the olfactory nerves, with concentrations above 100 ppm, resulting in loss of smell; prolonged inhalation may even cause death. One of the most important semiconducting metal oxides for the detection of H2S is CuxO (x = 1, 2), which is converted to CuxS upon exposure to H2S, leading to a remarkable modulation in the resistance and appearance of an electrical sensing signal. In this review, various morphologies of CuxO in the pristine form, composites of CuxO with other materials, and decoration/doping of noble metals on CuxO nanostructures for the reliable detection of H2S gas are thoroughly discussed. With an emphasis to the detection mechanism of CuxO-based gas sensors, this review presents findings that are of considerable value as a reference.

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Efficient and economical electrical therapy for pancreatic cancers

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) ◽

10.1109/ceidp.2015.7352089 ◽

2015 ◽

Author(s):

R. Sarathi ◽

C. Vignesh ◽

R. Rayala ◽

Praveen Kumar ◽

Raji Sundararajan

Keyword(s):

Pancreatic Cancers ◽

Electrical Therapy

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TOWARDS SENSING SINGLE OR A FEW BIO-MOLECULAR ARCHITECTURES: DESIGN OF FUNCTIONAL SURFACES

International Journal of High Speed Electronics and Systems ◽

10.1142/s0129156408005266 ◽

2008 ◽

Vol 18 (01) ◽

pp. 187-194

Author(s):

PEIJI ZHAO ◽

DWIGHT WOOLARD ◽

JORGE M. SEMINARIO ◽

ROBERT TREW

Keyword(s):

Density Functional ◽

High Sensitivity ◽

Lower Sensitivity ◽

Label Free ◽

Dna Molecules ◽

Surface Attachment ◽

Biomolecular Sensing ◽

Aromatic Molecules ◽

Electrical Sensing ◽

Silicon Based

There is considerable interest in electrical sensing of biomolecular binding since it has the potential to be label free, to work easily in aqueous environments native to the biomolecules, and to be integrated with small, fast, and inexpensive microelectronoics as detection instrumentation. Although electrochemical methods have been used successfully in detections of DNA molecules with Ag labels at very high sensitivity (~ p ml), detection of DNA molecules in terms of label free techniques has a lower sensitivity (~ μ ml). Here, the surface attachment chemistry is critical towards the detection of ultra-low concentration of biomolecules. In this article, based on density functional theory, we have calculated and analyzed the electrical characteristics of the contact between aromatic molecules and silicon (100) − 2×1 surfaces. Design principles for silicon based electrodes of electrochemically biomolecular sensing instruments for label-free sensing of single or a few biomolecular molecules have also been discussed.

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