scholarly journals Optically detected nuclear quadrupolar interaction ofN14in nitrogen-vacancy centers in diamond

2014 ◽  
Vol 89 (20) ◽  
Author(s):  
Chang S. Shin ◽  
Mark C. Butler ◽  
Hai-Jing Wang ◽  
Claudia E. Avalos ◽  
Scott J. Seltzer ◽  
...  
Keyword(s):  
Nitrogen Vacancy ◽  
Quadrupolar Interaction ◽  
Nitrogen Vacancy Centers ◽  
Optically Detected

scholarly journals Broadband, large-area microwave antenna for optically detected magnetic resonance of nitrogen-vacancy centers in diamond

2016 ◽  
Vol 87 (5) ◽  
pp. 053904 ◽  
Author(s):  
Kento Sasaki ◽  
Yasuaki Monnai ◽  
Soya Saijo ◽  
Ryushiro Fujita ◽  
Hideyuki Watanabe ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Nitrogen Vacancy ◽  
Microwave Antenna ◽  
Large Area ◽  
Optically Detected Magnetic Resonance ◽  
Nitrogen Vacancy Centers ◽  
Optically Detected

scholarly journals Divergent effects of laser irradiation on ensembles of nitrogen-vacancy centers in bulk and nano-diamonds: implications for biosensing

2021 ◽  
Author(s):  
Domingo Olivares Postigo ◽  
Federico Gorrini ◽  
Valeria Bitonto ◽  
Johannes Ackermann ◽  
Rakshyakar Giri ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Laser Power ◽  
Surface Effects ◽  
Nitrogen Vacancy ◽  
Spin Order ◽  
Surface Areas ◽  
Nitrogen Vacancy Centers ◽  
Fluorescent Nanodiamonds ◽  
Optically Detected ◽  
Bulk Diamond

Ensembles of negatively charged nitrogen vacancy centers (NV-) in diamond have been proposed for sensing of magnetic fields and paramagnetic agents, and as a source of spin-order for the hyperpolarization of nuclei in magnetic resonance applications. To this end, strongly fluorescent nanodiamonds represent promising materials, with large surface areas and dense ensembles of NV-. However, surface effects tend to favor the less useful neutral form, the NV0 centers. Here, we study the fluorescence properties and optically detected magnetic resonance (ODMR) of NV- centers as a function of laser power in strongly fluorescent bulk diamond and in nanodiamonds obtained by nanomilling the native material. In bulk diamond, we find that increasing laser power increases ODMR contrast, consistent with a power-dependent increase in spin-polarization. Surprisingly, in nanodiamonds we observe a non-monotonic behavior, with a decrease in ODMR contrast at higher laser power that can be ascribed to more efficient NV-→NV0 photoconversion in nanodiamonds compared to bulk diamond, resulting in depletion of the NV- pool. We also studied this phenomenon in cell cultures following internalization of NDs in macrophages. Our findings show that surface effects in nanodiamonds substantially affect the NV properties and provide indications for the adjustment of experimental parameters.

scholarly journals Sidebands in optically detected magnetic resonance signals of nitrogen vacancy centers in diamond

2013 ◽  
Vol 87 (22) ◽  
Author(s):  
Maria Simanovskaia ◽  
Kasper Jensen ◽  
Andrey Jarmola ◽  
Kurt Aulenbacher ◽  
Neil Manson ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Nitrogen Vacancy ◽  
Optically Detected Magnetic Resonance ◽  
Nitrogen Vacancy Centers ◽  
Optically Detected
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