Scanning Probe with Nitrogen Vacancy Centers in Diamond Particle for Magnetic Resonance Imaging
Scanning Probe with Nitrogen Vacancy Centers in Diamond Particle for Magnetic Resonance Imaging
复制标题
用于磁共振成像的金刚石颗粒中氮空位中心扫描探针
DOI：
10.1109/nano.2016.7751404
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and Takahito Ono
中科院分区：
文献类型：
--
作者：
Minjie Zhu;Masaya Toda;and Takahito Ono
氮空位（NV-）中心即使在环境条件下也对磁场具有异常的敏感性。光学可检测的电子自旋和原子尺寸使其成为具有纳米空间分辨率的先进磁共振成像（MRI）技术的有希望的候选者。采用微波等离子体化学气相沉积（MPCVD）技术，在N2气氛中制备了具有NV心的金刚石颗粒，并将其固定在扫描探针上作为磁传感器。而NV-中心的存在下，通过拉曼光谱确定，在2.87 GHz的微波频率的光致发光强度降低的光学检测磁共振（ODMR）系统。这意味着NV自旋态可以使用光学激发来操纵和读出。
Nitrogen vacancy (NV-) centers possess exceptional sensitivity to magnetic field even under ambient condition. The optically detectable electron spins and the atomic size make it a promising candidate for advanced magnetic resonance imaging (MRI) technique with nanoscale spatial resolution. In this work, diamond particles with NV-centers were deposited by microwave plasma chemical vapor deposition (MPCVD) under gaseous N2dopant and were fixed on the fabricated scanning probe as a magnetic sensor. While the existence of NV-center was determined by Raman spectroscopy, the photoluminescence intensity at 2.87 GHz microwave frequency was decreased by an optically detected magnetic resonance (ODMR) system. It implies that the NV-spin state can be manipulated and read out using optical excitation.