光子学报, 2018, 47 (2): 0206001, 网络出版: 2018-01-30
面向实用化的片上光阱传感单元
Practical Sensing Chip Based on Optical Trap
光纤光阱 悬浮微球 封闭微型腔 静态稳定性 重复起振 Fiber optical trap Levitating particle Sealed microcavity Static stability test Reproducible launching
摘要
提出并实现了一种片式光阱传感单元.利用基片上的V型槽保证双光纤光阱的对准, 利用压电元件振动使微球与基片脱离, 实现了空气环境中对10 μm微球的捕获, 捕获后的微球位置稳定性达到0.12 μm.在此基础上, 设计制作了可预置少量微球的封闭微型腔, 实现了光阱传感结构的微型化和集成化, 解决了光阱中单微球的高效可重复起振难题, 为实现实用化的光阱传感器奠定了基础.
Abstract
A chip of fiber optical trap was investigated, using the Vgrooved SiO2 platform to align the fibers and the piezoelectric components to break the constraints between particles and the substrate. After successfully trapping the particle with 10 μm diameter in the air, the axial fluctuation of the particle reaches to the submicron scale (0.12 μm). Furthermore, combined with the micromachining technology, this paper realizes a sealed microcavity to contain few particles that not merely achieves integration into labonachip environments but also implements the reproducible launching of a single particle, promoting the application for engineering of optical trap sensing technique.
葛晓佳, 沈瑜, 苏鹤鸣, 佘玄, 胡慧珠. 面向实用化的片上光阱传感单元[J]. 光子学报, 2018, 47(2): 0206001. GE Xiaojia, SHEN Yu, SU Heming, SHE Xuan, HU Huizhu. Practical Sensing Chip Based on Optical Trap[J]. ACTA PHOTONICA SINICA, 2018, 47(2): 0206001.