Specifically sized gold nanoparticle spheres increase sensitivity of light-based chemical detector

A sensor that relies on reflected light to analyze biomedical and chemical samples now has greater sensitivity, thanks to a carpet of gold nanoparticles. Xia Yu of the A*STAR Singapore Institute of Manufacturing Technology, along with her students and colleagues, has determined the ideal size of nanoparticle to improve surface plasmon resonance (SPR) sensors.

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