Despite significant and stunning advances in vaccine technology, the COVID-19 global pandemic is not over. A key challenge in limiting the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is identifying ...
Jul 1, 2022
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Rapid, accessible and highly accurate detection of addictive substances such as opiates and cocaine is vital to reducing the adverse personal and societal impacts of addiction, something current drug detection systems can ...
Jan 4, 2022
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Researchers at EPFL have developed a technology based on nanophotonics and data science to detect and monitor cancer biomarkers at an early stage. Their research is published in Nature Communications.
Jun 8, 2021
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Pricking a finger everyday is just part of everyday life for many diabetes patients. A non-invasive measurement approach could release them from the constant pain of pin pricks. The linchpin is a biosensor engineered by Fraunhofer ...
Sep 4, 2012
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Scientists from the Max Planck Institute and EPFL have developed a new type of biosensor able to precisely quantify metabolites using a single drop of blood. The accuracy and simplicity of the procedure could make it a tool ...
Sep 14, 2018
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Researchers are a step closer to transforming a US$70 billion global diagnostic industry with new designer biosensors that 'switch on' color or electrical responses to drugs used in cancer, arthritis, and organ transplant ...
Dec 19, 2021
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As medical technology advances, many diseases could be detected, prevented and cured with cells, rather than pills.
Aug 13, 2023
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Biomedical engineers, cell biologists and neuroscientists at Duke University and the Albert Einstein College of Medicine have developed a new type of genetically encoded neural biosensor that operates in near-infrared light.
Oct 27, 2020
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When a person takes a puff on a cigarette, nicotine floods into the brain, latching onto receptors on the surface of neurons and producing feelings of happiness. But nicotine does not simply stay on the surface of cells—the ...
Feb 7, 2019
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Researchers of the Consejo Superior de Investigaciones Científicas (CSIC), the Catalan Institute of Nanoscience and Nanotechnology (ICN2) and CIBER Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) have developed ...
Nov 27, 2018
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A biosensor is a device for the detection of an analyte that combines a biological component with a physicochemical detector component.
It consists of 3 parts:
The most widespread example of a commercial biosensor is the blood glucose biosensor, which uses the enzyme glucose oxidase to break blood glucose down. In doing so it first oxidizes glucose and uses two electrons to reduce the FAD (a component of the enzyme) to FADH2. This in turn is oxidized by the electrode (accepting two electrons from the electrode) in a number of steps. The resulting current is a measure of the concentration of glucose. In this case, the electrode is the transducer and the enzyme is the biologically active component.
Recently, arrays of many different detector molecules have been applied in so called electronic nose devices, where the pattern of response from the detectors is used to fingerprint a substance. Current commercial electronic noses, however, do not use biological elements.
A canary in a cage, as used by miners to warn of gas could be considered a biosensor. Many of today's biosensor applications are similar, in that they use organisms which respond to toxic substances at a much lower level than us to warn us of their presence. Such devices can be used in environmental monitoring, trace gas detection and in water treatment facilities.
This text uses material from Wikipedia, licensed under CC BY-SA
