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We report a novel electrical DNA biosensor, which consists of gold (Au) nano islands and SWCNT net on top of a semi-concentric Au electrode array (also referred to as the CGi). The real time measurement in TE buffer solution in a wide range of the target ss-DNA concentration down to fM (10-15 M) was performed to check the detection limit. The CGi, functionalized with 25mer probe ss-DNA (5'-HSC6-C18...
A sensitive immunosensor based on charge detection is developed for proteins. Its aim is to select and quantify low protein concentrations in a complex environment. This highly sensitive sensor is a SGFET (Suspended Gate Field Effect Transistor) whose gate is suspended at 500 nm high above the silicon channel and embedded in silicon nitride. This electrical insulation and the general design of the...
Micro-strip-line-based THz sensors were applied to the characterization of liquid water containing a protein (albumin) and amino-acid (arginine). Density-dependent attenuation of the THz waves was clearly observed for both the cases.
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