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arXiv · 2506.09058

GPa Pressure Imaging Using Nanodiamond Quantum Sensors

Ryotaro Suda·Kenshin Uriu·Kouki Yamamoto·Misaki Sasaki·Kento Sasaki·Mari Einaga·Katsuya Shimizu·Kensuke Kobayashi
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Abstract

We demonstrate wide-field optical microscopy of the pressure distribution at approximately 20 GPa in a diamond anvil cell (DAC), using nitrogen-vacancy (NV) centers in nanodiamonds (NDs) as quantum sensors. Pressure and non-hydrostaticity maps are obtained by fitting optically detected magnetic resonance (ODMR) spectra with models incorporating hydrostatic and uniaxial stress conditions. Two methods for introducing NDs with a pressure-transmitting medium are compared, revealing that the embedding approach affects the degree of non-hydrostaticity. This ND-based technique offers a powerful imaging platform for probing pressure-induced phenomena and is extendable to other physical quantities such as magnetic fields.

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Ryotaro Suda, Kenshin Uriu, Kouki Yamamoto, Misaki Sasaki, Kento Sasaki, Mari Einaga, Katsuya Shimizu, Kensuke Kobayashi. 2025-11-19. GPa Pressure Imaging Using Nanodiamond Quantum Sensors. https://doi.org/10.7566/jpsj.94.124707

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