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BP: Fachverband Biologische Physik

BP 4: Novel Methods

BP 4.1: Vortrag

Montag, 25. Februar 2008, 14:30–14:45, PC 203

A novel magneto-optical contrast mechanism in microscopy — •Gopalakrishnan Balasubramanian¹, Iu-Yam Chan¹, Roman Kolesov¹, Philip Hemmer², Fedor Jelezko¹, and Jörg Wrachtrup¹ — ¹3. Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart — ²Electrical Engineering, Texas A&M University, College Station, TX, USA

A novel non-contact optical imaging technique is presented that can achieve atomic scale resolution at standoff distances large enough to eventually permit molecular imaging at ambient conditions. The pioneering aspect of this technique is the use of single paramagnetic optically active centers in diamond as the probe. The feasibility of proposed scheme is based on recent key discoveries related to detection and manipulation of single Nitrogen-Vacancy (NV) centers in diamond. A spatially varying magnetic potential shifts the frequency of a ESR resonance of the probe system, so that the resonance frequency is position dependent. Proposed technique will enable nm resolution at long standoff distances.