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A dielectric affinity microbiosensor: (a) design schematic; and images of a fabricated device (b) before and (c) after packaging.
(a) Experimental setup. (b) A capacitance/voltage transformation circuit for sensor admittance measurements.
(a) Frequency-dependent equivalent capacitance of the microsensor in the absence of glucose (polymer PAAPBA content: 5%). (b) Differences between equivalent capacitances with and without the presence of glucose in the polymer.
Equivalent capacitance of the microsensor with different polymer compositions at varying glucose concentrations (frequency: 100 kHz).
Equivalent capacitance of the microsensor with the polymer containing glucose monosaccharides galactose or fructose at varying concentrations (frequency: 100 kHz).
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