Diagram Depicting New Type of 'Diffraction-Based' Sensor (IMAGE)

Purdue University

Diagram Depicting New Type of 'Diffraction-Based' Sensor

Caption

This diagram depicts a new type of "diffraction-based" sensor made of thin stripes of a gelatinous material called a hydrogel, which expands and contracts depending on the acidity of its environment. The new type of biological and chemical sensor has few moving parts and works by precisely determining pH, revealing the identity of substances in liquid environments such as water or blood. The microscopic images

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Birck Nanotechnology Center, Purdue University

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