High-Sensitivity, High-Resolution Detection of Reactive Oxygen-Species Concentration Using NV Centers

• URL: http://arxiv.org/abs/2107.00398v1
• Date: Thu, 1 Jul 2021 12:16:28 GMT
• Title: High-Sensitivity, High-Resolution Detection of Reactive Oxygen-Species Concentration Using NV Centers
• Authors: Yoav Ninio, Nir Waiskopf, Idan Meirzada, Yoav Romach, Galya Haim, Shira Yochelis, Uri Banin and Nir Bar-Gill
• Abstract summary: Nitrogen-vacancy (NV) color centers in diamond have been demonstrated as useful magnetic sensors. We demonstrate a novel approach to measure and quantify Hydroxyl radicals with high spatial resolution.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Nitrogen-vacancy (NV) color centers in diamond have been demonstrated as useful magnetic sensors, in particular for measuring spin fluctuations, achieving high sensitivity and spatial resolution. These abilities can be used to explore various biological and chemical processes, catalyzed by Reactive Oxygen Species (ROS). Here we demonstrate a novel approach to measure and quantify Hydroxyl radicals with high spatial resolution, using the fluorescence difference between NV charged states. According to the results, the achieved NV sensitivity is $11 \pm 4 \frac{nM}{\sqrt Hz}$, realized in-situ without spin labels and localized to a volume of $\sim 10$ picoliter.

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