GE Xiaojia, SHEN Yu, SU Heming, SHE Xuan, HU Huizhu. Practical Sensing Chip Based on Optical Trap[J]. Acta Photonica Sinica, 2018, 47(2): 206001
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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.