基于光纤的扫描悬浮纳米粒子力传感器，靠近金属化薄膜
Fiber-based scanning levitated nanoparticle force sensor near a metalized membrane
- Northwestern University（西北大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文介绍一种基于光纤的双光束陷阱，可将介电纳米球转移至金属镜面附近驻波陷阱，实现三维扫描力传感、激光冷却及泽普顿级力分辨率，有望用于短距离重力测试和表面力研究。
AI中文摘要：
我们描述了一种基于光纤的双光束陷阱，用于介电纳米球，并具有将捕获的粒子转移到金属镜表面微米范围内的回射驻波陷阱中的能力。我们展示了其在超薄镀金氮化硅镜面薄膜（总厚度约370纳米）上数平方微米区域内进行三维扫描力传感的能力。我们还演示了在距离薄膜微米级的高真空环境中实现三维激光反馈冷却和泽普顿级力分辨率，这表明未来在短距离重力改进测试和其他表面力研究方面具有前景。通过使用带电纳米球，我们预计该方法可能有助于研究表面附近的波动斑块电位和电场噪声，频率范围约为千赫兹到100千赫兹。
英文摘要：
We describe a fiber-based dual-beam trap for dielectric nanospheres with the ability to transfer the trapped particles into a retro-reflective standing-wave trap within micron-range distances of a metallic mirror surface. We illustrate its capability for three dimensional scanning force sensing over a several square micron area of an ultra-thin gold-coated silicon nitride mirror-membrane with a total thickness of approximately 370~nm. We also demonstrate three-dimensional laser feedback cooling and zeptonewton force resolution in high-vacuum at micron range from the membrane, showing promise for future improved tests of gravity at short distances and other surface force investigations. By using charged nanospheres, we expect the method may be useful for studying fluctuating patch potentials and electric field noise in the vicinity of a surface in the $\sim$ kHz to $\sim 100$ kHz frequency regime.
