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Valentine MT Guydosh NR Gutiérrez-Medina B Fehr AN Andreasson JO Block SM 《Optics letters》2008,33(6):599-601
We designed, constructed, and tested a single-beam optical trapping instrument employing twin electro-optic deflectors (EODs) to steer the trap in the specimen plane. Compared with traditional instruments based on acousto-optic deflectors (AODs), EOD-based traps offer a significant improvement in light throughput and a reduction in deflection-angle (pointing) errors. These attributes impart improved force and position resolution, making EOD-based traps a promising alternative for high-precision nanomechanical measurements of biomaterials. 相似文献
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Johnson ER; McDonald NR 《The Quarterly Journal of Mechanics and Applied Mathematics》2007,60(1):65-72
An explicit solution for a layer of fluid with constant vorticitysurrounding a thin plate of finite length is obtained usingelementary conformal mapping methods. In the limit of largeplate length the behaviour of the solution near the ends ofthe plate tends to that of the previously known solution fora semi-infinite plate. Contour dynamics is used to investigatethe stability of the steady solutions. 相似文献
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