Stimuli Responsive Release
of Metalic Nanoparticles
on Semiconductor Substrates
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Abstract
Optically active metal nanoparticles have been of recent
and broad
interest for applications to biomarker detection because of their
ability to enable high sensitivity enhancements in various optical
detection techniques. Here, we report stimuli responsive release of
metallic nanoparticles on a semiconductor thin film array structure
based on pH change. The metallic nanoparticles are obtained by a simple
redox procedure on the semiconductor surface. This approach allows
controlling nanoparticle surface coatings in situ for biomolecule
conjugation, such as DNA probes on nanoparticles, and rapid stimuli
responsive release of these nanoparticles upon pH change