Nanodiamond-Based Optical-Fiber Quantum Probe for Magnetic Field and Biological Sensing
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2022-12-01 |
| Journal | ACS Sensors |
| Authors | Yaofei Chen, Qianyu Lin, Hongda Cheng, Huanhuan Huang, Jie Shao |
| Institutions | Jinan University |
| Citations | 29 |
Abstract
Section titled “Abstract”Owing to the unique electronic spin properties, nitrogen-vacancy (NV) centers hosted in diamond have emerged as a powerful quantum tool for detecting various physical parameters and biological species. In this work, an optical-fiber quantum probe, configured by chemically modifying nanodiamonds on the surface of a cone fiber tip, is developed. Based on the continuous-wave optically detected magnetic resonance method and lock-in amplification technique, it is found that the sensing performance of probes can be engineered by varying the nanodiamond dispersion concentration and modification duration during the chemical modification process. Combined with a pair of magnetic flux concentrators, the magnetic field detection sensitivity has reached 0.57 nT/Hz<sup><b>1</b>/2</sup>@1 Hz, a new record among the fiber magnetometers based on nanodiamonds. Taking Gd<sup><b>3</b>+</sup> as the demo, the capability of probes in paramagnetic species detection is also demonstrated experimentally. Our work provides a new approach to develop NV centers as quantum probes featuring high integration, multifunction, high sensitivity, etc.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2018 - Fluorescent nanodiamonds [Crossref]