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This paper describes the design and development of a sensing system to detect the nitrate concentration by using planar interdigital sensor immersed in the water sample. Water samples were prepared containing two different salts: Sodium Nitrate (NaNO3) and Ammonium Nitrate (NH4NO3) with the concentration ranging from 0.02 PPM to 10 PPM by using the serial dilution method. The water sample was tested...
This research work describes a non-invasive and label-free immunosensing technique to detect the C-telopeptide of type-I collagen (CTX-1) by Electrochemical Impedance Spectroscopy (EIS). A planar interdigital capacitive sensor is used to evaluate the properties of the material under test. This sensor was fabricated on the basis of thin film micro-electromechanical system (MEMS) semiconductor device...
The escalating applications of miniaturized sensors have led the microelectronics industry to stay abreast with the precise micro-fabrication technologies. The following article describes a new technique for the fabrication of miniaturized interdigitated capacitive sensors that own highly sensitive and real-time detections capabilities. In standard lithographic procedure, the sensors are fabricated...
Phthalate esters are known ubiquitous teratogenic and carcinogenic environmental and food pollutants. Their detection and quantification is strictly laboratory based, time consuming, expensive and professionally handled procedure. Presented research work describes a real time non-invasive detection technique for phthalates detection in ethanol, water and drinks. The new type of inter-digital sensor...
New types of planar interdigital sensors were fabricated by photolithography and etching techniques on a Silicon/Silicon Dioxide (Si/SiO2) wafer (single side polished). The sensors were then coated with APTES (3-aminopropyltrietoxysilane) a cross linker used to bind Polymyxin B (PmB) molecules on electrodes surface. PmB is an antimicrobial peptide produced by the Gram-positive bacterium-Bacillus which...
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