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Optics and Photonics News

21^st-Century Applications of Nanodiamonds

Andrew D. Greentree, Igor Aharonovich, Stefania Castelletto, Marcus W. Doherty, Liam Paul McGuinness, David Simpson

Published Sep 1, 2010• 17 citations
Publisher

Abstract

Diamond is taking on a new role as a versatile and practical platform for harnessing the new quantum physics. Here, we outline some of the biological and quantum applications of nanodiamonds and the central role of diamond color centers.
DOI
10.1364/opn.21.9.000020

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Unlocking the quantum potential of nitrogen-vacancy (NV) centers in diamonds has led to innovative advancements in sensing applications. By coupling NV centers with plasmonic nanostructures, ultrasensitive biolabels are envisioned. To this end, we exploit DNA self-assembly to create hybrid plasmonic nanodiamonds, featuring a closed nanocavity encapsulating a single nanodiamond. Correlated spectroscopy reveals enhanced brightness and emission rates, crucial for quantum sensing. This synergy between plasmonics and diamond fluorescence augments photon emission intensity and accelerates emission rates, enabling improved temporal resolution. These nanodiamonds hold promise as stable single-photon sources and versatile platforms for probing quantum effects in biology. This talk highlights the development, properties, and potential applications of these nanodiamonds, bridging quantum sensing and biomedicine, and fostering transformative changes in biophotonics.