Regensburg 2010 – scientific programme
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BP: Fachverband Biologische Physik
BP 34: Posters: New Technologies
BP 34.10: Poster
Thursday, March 25, 2010, 17:15–20:00, Poster B2
Atomic scale magnetometry using single defects in diamond — •Thomas Wolf1, Helmut Rathgen1, Rolf Reuter1, Gopalakrishnan Balasubramanian1, Fedor Jelezko1, Dirk Bald2, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Universität Stuttgart, Germany — 2Structural Biology Group, Vrije Universiteit Amsterdam, Netherlands
Diamonds contain natural defect centers in their lattice structure known as color centers. Electron spin states in these centers (e.g. the Nitrogen-Vacancy or NV-center) can be changed and measured with optical techniques at room temperature. Using magnetic fields and magnetic field gradients the centers can be located spatially on the nanometer scale and allow for directional analysis. The potential for sub-nm precision by using magnetic resonance techniques has been shown by our group and collaborators.
Diamonds with diameters of a few nanometers containing a NV-center are comparatively cheap and can be produced in large scale. By chemical treatment functionalization of these can be achieved.
Using small nanosized diamond crystals containing a NV-center we intend to use diamond as non-toxic biological marker for a new magnetic resonance imaging technique having potential to overcome the classical resolution limit of light microscopy under physiological conditions.