Optical Contactless Measurement of Electric Field-Induced Tensile Stress in Diamond Nanoscale Needles,Nano Letters

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Optical Contactless Measurement of Electric Field-Induced Tensile Stress in Diamond Nanoscale Needles
Nano Letters ( IF 9.6 ) Pub Date : 2017-11-08 00:00:00 , DOI: 10.1021/acs.nanolett.7b03222
L. Rigutti ₁ , L. Venturi ₁ , J. Houard ₁ , A. Normand ₁ , E. P. Silaeva ₁ , M. Borz ₁ , S. A. Malykhin _{2,

3} , A. N. Obraztsov _{2,

3} , A. Vella ₁

Affiliation

The application of a high electrostatic field at the apex of monocrystalline diamond nanoscale needles induces an energy splitting of the photoluminescence lines of color centers. In particular, the splitting of the zero-phonon line of the neutral nitrogen-vacancy complex (NV⁰) has been studied within a laser-assisted tomographic atom probe equipped with an in situ microphotoluminescence bench. The measured quadratic dependence of the energy splitting on the applied voltage corresponds to the stress generated on the metal-like apex surface by the electrostatic field. Tensile stress up to 7 GPa has thus been measured in the proximity of the needle apex. Furthermore, the stress scales along the needle shank inversely proportionally to its axial cross section. We demonstrate thus a method for contactless piezo-spectroscopy of nanoscale systems by electrostatic field regulation for the study of their mechanical properties. These results also provide an experimental confirmation to the models of dielectrics surface metallization under high electrostatic field.

中文翻译：

金刚石纳米针中电场感应拉伸应力的无接触光学测量

在单晶金刚石纳米级针的顶点处施加高静电场引起色心的光致发光线的能量分裂。特别是中性氮-空位络合物（NV ⁰）已在配备有原位微光致发光台架的激光辅助层析X射线原子探针中进行了研究。所测得的能量分裂对施加电压的二次依赖性与静电场在金属状顶点表面上产生的应力相对应。因此，在针尖附近测得的拉伸应力高达7 GPa。此外，应力沿着针杆的轴向与其轴向横截面成反比。因此，我们证明了一种通过静电场调节对纳米级系统进行非接触式压电光谱分析的方法，以研究其机械性能。这些结果也为高静电场下电介质表面金属化的模型提供了实验确认。

更新日期：2017-11-09

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