TechConnectWorld 2011 Conference and Expo TechConnect World 2011 Nanotech 2011 Clean Technology 2011 Microtech 2011 Bio Nanotech 2011 TechConnect Summit and Expo 2011

Fluorescent Nanodiamonds with Silicon-Vacancy Color Center: An Potential Cellular Biomarker

S. Singh

Keywords: fluorescence, color centers, nanodiamonds


Nanodiamond particles are emerged as a promising candidate as an imaging probe and as a drug and gene delivery agent because of their promising photostable luminescent emission upon incorporation of color centers (mostly nitrogen vacancy), low cytotoxicity and easy surface modification. In our experiments discrete nanodiamond (ND) particles with average size of ~6 nm were microwave plasma treated on silicon substrates in a Chemical vapor deposition (CVD) reactor to create silicon-vacancy centers. Our results represent that SiV incorporated in NDs readily exhibits strong narrow band room temperature fluorescence, even for sub-10 nm size particles (fig 1), in contrast to the well-studied nitrogen-vacancy center (N-V) in diamond which are reported to be relatively unstable and have particle size dependant luminescence properties, with low probability for incorporation of centers in sub-10 nm crystals.
Sessions Monday Tuesday Wednesday Thursday Authors Keywords Affiliations Search

TechConnect World 2011 Nanotech 2011 Clean Technology 2011 Microtech 2011 BioNanotech 2011 TechConnect Summit 2011
2011 Events | Program | Speaker | Short Courses Sponsor Exhibit/Showcase Press Venue Register
Subscribe | Contact | Site Map
© Copyright 2010 TechConnect World. All Rights Reserved.