17 August 2014 Positioning of single quantum dots on nanoscale areas of metal-free substrates (presentation video)
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Abstract
We demonstrate a novel process for selective binding of single semiconductor core-shell quantum dots (QDs) to transparent all-dielectric (glass) substrates with nanoscale resolution. This is accomplished by defining a mask via electron-beam lithography (EBL) followed by functionalization of only the exposed areas of the substrate with a heterobifunctional linker, while applying a binding inhibitor to all other areas. Single QD blinking is clearly observed for several QD functionalized sites. Our approach is compatible with standard two-step EBL nanofabrication schemes and it does not rely on the presence of metals, making it suitable for coupling QDs to all-dielectric nanoresonators.
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Isabelle Staude, Isabelle Staude, Varun K. Sreenivasan, Varun K. Sreenivasan, Ivan Shishkin, Ivan Shishkin, Kirill Samusev, Kirill Samusev, Manuel Decker, Manuel Decker, Dragomir N. Neshev, Dragomir N. Neshev, Andrei V. Zvyagin, Andrei V. Zvyagin, Yuri S. Kivshar, Yuri S. Kivshar, } "Positioning of single quantum dots on nanoscale areas of metal-free substrates (presentation video)", Proc. SPIE 9162, Active Photonic Materials VI, 91620E (17 August 2014); doi: 10.1117/12.2061436; https://doi.org/10.1117/12.2061436
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