DOE OSTI · 3022610
Quantum Sensing in Micro-Architected Scaffolds
Abstract
Quantum sensing with nitrogen-vacancy centers in diamond has emerged as a powerful tool for measuring diverse physical parameters, yet the versatility of these measurement approaches is often limited by the achievable layout and dimensionality of bulk-crystal platforms. Here, in this study, we demonstrate a versatile approach to creating designer quantum sensors by surface-functionalizing multiphoton lithography microstructures with NV-containing nanodiamonds. We showcase this capability by fabricating a 150 μm × 150 μm × 150 μm triply periodic minimal surface gyroid structure with millions of attached nanodiamonds. We demonstrate a means to volumetrically image these structures using a refractive index matching confocal imaging technique and extract ODMR spectra from 1.86 μm × 1.86 μm areas of highly concentrated nanodiamonds across a cross-section of the gyroid. Furthermore, the high density of sensing elements enables ensemble temperature measurements with a sensitivity of 0.548 ± 0.084 K/√Hz at 5 mW excitation power. This approach to creating quantum-enabled microarchitectures opens new possibilities for multimodal sensing in complex three-dimensional environments.
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Blankenship, Brian W. [University of California, Berkeley, CA (United States)] (ORCID:0000000342126835), Rho, Yoonsoo [Ulsan National Institute of Science and Technology (UNIST), Ulsan (Korea, Republic of)], Jones, Zachary R. [University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:000000018725975X), Meier, Timon [University of California, Berkeley, CA (United States)] (ORCID:000900096572680X), Li, Runxuan [University of California, Berkeley, CA (United States)], Druga, Emanuel [University of California, Berkeley, CA (United States)], Korakis, Vasileios [University of California, Berkeley, CA (United States)], Singh, Harpreet [Guru Nanak Dev University, Amritsar (India)] (ORCID:0000000275054850), Xia, Xiaoxing [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Ajoy, Ashok [University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Canadian Institute for Advanced Research (CIFAR), Toronto, ON (Canada)], Grigoropoulos, Costas P. [University of California, Berkeley, CA (United States)] (ORCID:0000000285054037). 2025-12-09. Quantum Sensing in Micro-Architected Scaffolds. https://doi.org/10.1021/acsami.5c22109
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