Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 52: Precision Measurement and Metrology 3
Q 52.1: Vortrag
Donnerstag, 17. März 2011, 14:30–14:45, HÜL 386
Fluorescent Nanodiamonds for Fluorescence Resonance Energy Transfer Imaging and Magnetometry — •Julia Tisler1, Gopalakrishnan Balasubramanian1, Jean-Paul Boudou2, Patrick Curmi2, Rolf Reuter1, Boris Naydenov1, Anke Lämmle1, Fedor Jelezko1, and Jörg Wrachtrup1 — 13.Physikalisches Institut, Universität, Germany — 2Université d`Evry, France
Matchless photostability, magnetic resonance at room temperature combined with chemical inertness and excellent biocompatibility, put nanodiamonds with color centers in the focus of interest for new high resolution microscopy methods. An example for such color center is the NV-center. Through progress in irradiation and milling we achieved fluorescent nanodiamonds with sizes below 4 nm [1]. Recent research showed that even very small nanodiamonds with NV-center retain their optical and spin properties [2]. Based on these new findings novel high resolution imaging could be performed by field gradient magnetometry and FRET. With the new particles it is now within reach for magnetometry to get below the already achieved magnetic field limit of 5 mT [3]. Also first successful experiments of FRET between fluorescent nanodiamonds (FRET donator) and quencher molecules of fluorescent dyes (FRET acceptor) have been done.
[1] Boudou J.P. (2009) Nanotechnology [2] Tisler J. (2009) ACS Nano [3] Balasubramanian G. (2008) Nature