Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

BP: Fachverband Biologische Physik

BP 34: Posters: New Technologies

BP 34.10: Poster

Donnerstag, 25. März 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.