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Etching and Dimerization: A Simple and Versatile Route to Dimers of Silver Nanospheres with a Range of Sizes


  • This research was supported in part by a research grant from the NSF (DMR-0804088) and a 2006 Director’s Pioneer Award from the NIH (DP1 OD000798). P.H.C.C. was also supported in part by the Fulbright Program and the Brazilian Ministry of Education (CAPES). Part of the study was performed at the Nano Research Facility (NRF), a member of the National Nanotechnology Infrastructure Network (NNIN), which is supported by the NSF under ECS-0335765. NRF is part of the School of Engineering and Applied Science at Washington University in St. Louis.


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Paarbildung: Dimere von Ag-Nanokugeln unterschiedlicher Größe entstehen durch das Ätzen von Ag-Nanowürfeln mit Eisen(III)-nitrat in Ethanol in Gegenwart von Poly(vinylpyrrolidon) (PVP). Diese wohldefinierten Dimere (siehe TEM-Aufnahme) ermöglichen das systematische Studium des Hot-Spot-Phänomens bei der oberflächenverstärkten Raman-Streuung (SERS).