نتایج جستجو برای: interdigitated electrodes

تعداد نتایج: 40595  

Journal: :Analytical chemistry 2009
Brian A Zaccheo Richard M Crooks

This paper reports a simple DNA sensor having a detection limit of about 24 oligonucleotides and that operates without the need for PCR amplification. The sensor platform is based on an interdigitated array (IDA) of electrodes. The electrodes are modified with DNA capture probes, which are complementary to an analog for the Epstein-Barr genome, and then exposed to an alkaline phosphatase-labele...

2009
C. L. Trabi A.A.T. Smith N. J. Mottram C. V. Brown

Nematic phase gratings have been studied in which a planar nematic layer of thickness 17.2 μm is sandwiched between two glass substrates coated with an alignment polymer. The upper substrate is a continuous earth plane and the lower substrate has a patterned electrode of interdigitated stripes (electrodes and gaps are both 40 μm wide). Reorientation of the nematic liquid crystal occurs in respo...

Journal: :The Analyst 2016
Chathurika D Abeyrathne Duc H Huynh Thomas W Mcintire Thanh C Nguyen Babak Nasr Daniela Zantomio Gursharan Chana Iain Abbott Peter Choong Mike Catton Efstratios Skafidas

The Gram-positive bacterium, Staphylococcus aureus (S. aureus), is a major pathogen responsible for a variety of infectious diseases ranging from cellulitis to more serious conditions such as septic arthritis and septicaemia. Timely treatment with appropriate antibiotic therapy is essential to ensure clinical defervescence and to prevent further complications such as infective endocarditis or o...

2015
Zhanming Li Yingchun Fu Weihuan Fang Yanbin Li

Escherichia coli O157:H7 is a predominant foodborne pathogen with severe pathogenicity, leading to increasing attention given to rapid and sensitive detection. Herein, we propose an impedance biosensor using new kinds of screen-printed interdigitated microelectrodes (SPIMs) and wheat germ agglutinin (WGA) for signal amplification to detect E. coli O157:H7 with high sensitivity and time-efficien...

Journal: :Advanced Materials Interfaces 2023

The sensitivity and limits of detection (LOD) chemiresistive gas sensors can often be improved by increasing the surface area sensing material that interacts with analyte. This process is referred to as nanostructuring. Nanostructured polypyrrole (PPy) for ammonia were created aid a nanosphere template. Polystyrene nanospheres are deposited form template between interdigitated electrodes, chron...

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