Sintering Photonic Beads for Multiplex Biosensing

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Monodispersed silica nanoparticles were assembled into opaline photonic crystal beads and cemented together by sintering in order to enhance the mechanical stability of the beads, which simulates the formation of nature opal. The sintering temperatures and structures of the sintered beads were investigated. The results showed that by sintering treatment at temperatures between 700 °C and 1000 °C for 2 hours the beads were more reliable for multiplex bioassay applications in mechanical robustness, fluorescent background, sensitivity and encoding ability. It is anticipated that the opal-like beads have wide applications in multiplex protein and nucleic acid analysis.


Document Type: Research Article


Publication date: January 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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