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As the world's population ages, healthcare costs become heavy burdens worldwide. Portable point-of-care diagnostic devices, such as glucose meters, can significantly reduce the costs associated with patient care. There are many of small biological molecules present in biological samples which are of interest in healthcare applications. In this paper, a simple low-cost impedance detection circuit has...
In this paper, we describe a point-of-care biosensor design. The uniqueness of our design is in its capability for detecting a wide variety of target biomolecules and the simplicity of nanoparticle enhanced electrical detection. The electrical properties of interdigitated electrodes and the mechanism for gold nanoparticle-enhanced impedance-based biosensor systems based on these electrodes were simulated...
Organic vapor adsorption isotherms are measured on in situ grown carbon nanotube (CNT) films using piezoelectric GaPO 4 crystal microbalances as mass sensing substrates. The isotherms are Type IV and show adsorption/desorption hysteresis, consistent with a porous material. The measured porosity is 2%, a value surprisingly low given an over 90% void volume in the film estimated from density...
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