| AVS 62nd International Symposium & Exhibition | |
| Nanometer-scale Science and Technology | Tuesday Sessions |
| Session NS-TuP |
| Session: | Nanometer-scale Science and Technology Poster Session |
| Presenter: | Margaret Robinson, University of Wisconsin-Madison |
| Authors: | M. Robinson, University of Wisconsin-Madison J. Ng, University of Wisconsin-Madison H. Zhang, University of Wisconsin-Madison Z. Ma, University of Wisconsin-Madison R. Goldsmith, University of Wisconsin-Madison R.J. Hamers, University of Wisconsin-Madison |
| Correspondent: | Click to Email |
The unique optical properties of nitrogen vacancies (NV-) in nanodiamond offer an opportunity to probe charge, spin, and other local properties in complex environments at the single-particle level. The intensity of fluorescence from NV- centers can be modulated by the application of a microwave field. In complex, heterogeneous systems this ability to selectively modulate the intensity of NV- centers using microwaves can be used to discriminate between fluorescence due to nanodiamonds and fluorescence arising from other sources. Here, we describe experiments aimed at understanding the factors that control the ability to read out NV- center fluorescence and reject background fluorescence. We have characterized the optical response of NV- centers in diamond nanoparticles having different diameters and bearing different numbers of NV- centers using photoluminescence, fluorescence lifetime, and single-particle microscopy. Results of Nv-center modulation via applied microwave fields will be described, along with an analysis of the signal-to-noise parameters for optimization of NV- centers as probes of the charge, spin, and other local properties in complex materials systems.