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Recent research activities in the area of low-cost sensing and diagnostics that are realized on cellulosic paper substrate are presented. First a three-dimensional origami paper-based analytical device (omPAD) with multiple electrochemical sensors, an integrated sample reservoir and tight integration with a custom CMOS potentiostat is presented. Second, an optical sensor array with built-in microfluidic...
A three dimensional paper-based analytical device (PAD) with multiple electrochemical sensors, an integrated sample reservoir and tight integration with a custom CMOS potentiostat is presented. The sensors are fabricated using a combination of wax printing and screen printing using a solution based approach in ambient conditions without the need for expensive fabrication equipment or a cleanroom....
This paper presents a new “paint-on” method for low-cost, large-scale fabrication of metamaterials. Specifically, latex paint, silver conducting ink, and regular copy paper are used to create a perfect absorber working at X-band frequencies. The fabricated metamaterial is symmetrical and arranged in a cross-dipole like structure, making it polarization insensitive. Simulation results show absorbency...
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