Skip to content
6CCVD Research

The Possibility of Integrating NV Magnetometer Array by Using Wireless Microwave Excitation and Its Application in Remote Heart Sound Records

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2021-08-24
JournalIEEE Sensors Journal
AuthorsDoudou Zheng, Qimeng Wang, Xiaocheng Wang, Wang Xuemin, Yanjun Li
InstitutionsNorth University of China, The University of Osaka
Citations11

Abstract

Section titled ā€œAbstractā€

Nitrogen-vacancy (NV) centers have potential applications in medical imaging and distributed sensing, for which the integrated NV magnetometer array is needed. However, the microwave (MW) drive module limits the development of the compact NV magnetometer system and array. In this paper, wireless MW is applied to two NV magnetometer systems (Sensor I and Sensor II) innovatively. We verified that the magnetic-field sensitivity was approximately equal to 77.1 nTā€¢Hz <sup xmlns:mml=ā€œhttp://www.w3.org/1998/Math/MathMLā€ xmlns:xlink=ā€œhttp://www.w3.org/1999/xlinkā€&gt;āˆ’1/2&lt;/sup> and 44.6 nTā€¢Hz <sup xmlns:mml=ā€œhttp://www.w3.org/1998/Math/MathMLā€ xmlns:xlink=ā€œhttp://www.w3.org/1999/xlinkā€&gt;āˆ’1/2&lt;/sup> for Sensor I and Sensor II, respectively, when the distance between the transmitting and receiving antennas was 1 m. This method can be extended to the NV magnetometer array. The receiving antenna and power amplifier are integrated into the NV magnetometer array system for miniaturization. This expands the utility of NV magnetometers in sensing and medical imaging. Furthermore, we achieved remote heart sound records with a signal-to-noise ratio (SNR) of 5.93 dB and 4.68 dB for Sensor I and Sensor II, respectively, by applying the principle of NV-based demodulator to the system. This would further extend the advantages of the wireless MW in the NV magnetometer. The NV magnetometer could receive the frequency point carrying heart sound signal to reach up to 16, which can avoid the interference of the 2.4 GHz frequency band of Bluetooth and Wi-Fi in complex environments.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2013 - Magnetic field sensing with nitrogen-vacancy color centers in diamond
  2. 2016 - Diamond radio receiver: Nitrogen-vacancy centers as fluorescent transducers of microwave signals

Reads Similar to This

Fabrication of 15NVāˆ’ centers in diamond using a deterministic single ion implanter Pressure-Induced Conductivity and Yellow-to-Black Piezochromism in a Layered Cuā€“Cl Hybrid Perovskite Dynamically Unpolarized Single-Photon Source in Diamond with Intrinsic Randomness