Biosensors and Bioelectronics 2011 28: 1-12. Biosensors as innovative tools for the detection of food borne pathogens. Arora P, Sindhu A, Dilbaghi N, Chaudhury A.Biosensors for environmental monitoring: a global perspective. Rodriguezmozaz S, Alda M, Marco M, Barcelo D.Biosensors and Bioelectronics 2003 18: 841-846. Market analysis of biosensors for food safety. Owingto this advancement, using biosensor/chemical sensor which consists of QTF transducers with features that can takesensitive analyte measurement in picogram level will be able to spread. As a result, a QTF sensor device was fabricated that has furtheradvanced features when compared with its alternatives and works with a more accurate measurement method. Six other QTF transducer types, 32, 32.768, 40, 65.536, 75, and 100 kHz, havebeen studied as the other novel part of the research. Moreover, the effect of the ambient temperatureduring the measurements was checked. In this study, a novel, low-cost, portable quartz tuning fork sensor devicewith ability to work with any kind of display is presented in detail. When QTF sensor studieswere investigated, it was found that explanations on the details of instrumentation part were limited, and in addition,there was no compact commercial products. This study isundertaken to design and fabricate a sensor device for the measurement of QTF transducers. Since quartz tuning fork (QTF) resonance frequency depends on the mass adsorbed toits prongs, it is generally used to measure minor mass change and detect target analyte in picogram levels. formaldehyde) gas leaks food analysis (spoilage) Infrared/thermal detection or imaging 2) Environmental conditions sensor - able to sense small changes in temperature and other environmental conditions 3) Chemical weapons detector - homeland security issues Breath analysis - alcohol disease biomarkers such as nitric oxide for asthma diagnosis and drug dose setting ketones for management of diabetes bacterial infections etc.Recently, sensor and biosensor applications have become widespread and are now significant tools in thebiomedical field and other areas. Potential Applications: 1) Environmental/health hazards detector - air pollutants noxious and dangerous chemicals (e.g. Using the tuning fork sensors ASU scientists have successfully detected many chemical and biological analytes and have more recently demonstrated its utility as a thermal/IR sensor. The polymer may also absorb energy from radiation or convection. Interaction of a chemical or biological analyte with the polymer causes stretching and compressing forces in the wire which is detected by the quartz tuning fork with pN force sensitivity. In the later case the adsorption changes the effective mass of each tuning fork which is detected with 10 pg/mm2 sensitivity. In the former case when the fork is set to oscillate the polymer wire is stretched and compressed by the two prongs. Each sensor uses a polymer wire stretched across the two prongs of a tuning fork or simply a polymer-coated tuning fork. The sensor consists of an array of microfabricated quartz tuning fork based sensing elements. Researchers at the Biodesign Institute of Arizona State University have developed a miniaturized device for sensing a variety of chemical biological and physical phenomenon based on a common tuning fork technology. The presence or absence of specific chemicals and toxic gases in air harmful compounds in foods and water and early alert of trace amounts of explosives or chemical and biological warfare agents all require reliable and sensitive detection technologies. The ability to quickly and reliably detect minute changes in environmental conditionsincluding the presence of chemical biological or other physical threats within a low-cost miniaturized package would have broad impact across a variety of application.
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