论文标题
纳米级电场使用净电荷的悬浮纳米谐振器传感
Nanoscale Electric Field Sensing Using Levitated Nano-resonator with Net Charge
论文作者
论文摘要
基于悬浮粒子的纳米力学谐振器在超敏感电场检测器的发展中具有独特的优势。我们展示了使用具有已知净电荷的光悬浮纳米颗粒的三维高敏性电场测量技术。通过更改纳米颗粒和平行电极之间的相对位置，扫描了三维电场分布。测得的噪声等效电强度为100的充电量达到{\ rm {1μV/cm/h}}} {\ rm {z}^{\ rm {Z}^{\ rm {1/2}}}}}}}}}}}}}}}}}}}}}。线性分析在共振频率附近显示了超过91dB的线性范围仅受驱动设备的最大输出电压的限制。这项工作可能为基于光学悬浮的纳米谐振器开发高敏电场传感器的途径提供了途径。
Nanomechanical resonator based on levitated particle exhibits unique advantages in the development of ultrasensitive electric field detector. We demonstrate a three-dimensional, high-sensitivity electric field measurement technology using the optically levitated nanoparticle with a known net charge. By changing the relative position between nanoparticle and parallel electrodes, the three-dimensional electric field distribution is scanned. The measured noise equivalent electric intensity with charge amount of 100 reaches the order of {\rm{1μV/cm/H}}{\rm{z}^{\rm{1/2}}} at 1.4 \times {10^{ - 7}}mbar. Linearity analysis near resonance frequency shows a measured linear range over 91dB limited only by the maximum output voltage of the driving equipment. This work may provide avenue for developing a high-sensitive electric field sensor based on optically levitated nano-resonator.
