Optical squeezing of microbubbles: ray optics and Mie scattering calculations
Optical squeezing of microbubbles: ray optics and Mie scattering calculations
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微泡的光学挤压：射线光学和米氏散射计算
DOI：
10.1117/12.929900
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Skelton S
中科院分区：
文献类型：
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作者：
Skelton S
我们考虑在双光束光纤阱中捕获低折射率物体，如超声造影剂微泡。我们确认数值，这样的配置结果在稳定的捕获，我们提出了计算的捕获力和弹簧常数。此外，我们还分别用射线光学和米氏散射方法计算了被囚禁微泡表面的光子应力分布，并对结果进行了比较。然后，我们发现光应力引起的变形的微泡的射线光学和米氏散射应力分布使用线弹性膜理论。我们建议，这种方法可以是一个有用的工具，用于量化的超声造影剂微泡的外壳材料的机械性能。
We consider the trapping of low refractive index objects, such as ultrasound contrast agent microbubbles, in a dual-beam fibre-optic trap. We confirm numerically that such a configuration results in stable trapping and we present the calculated trapping forces and spring constants. Furthermore we calculate the photonic stress profile over the surface of the trapped microbubble using both ray optics and Mie scattering approaches, and compare the results. We then find the optical stress-induced deformation of the microbubble for both the ray optics and Mie scattering stress profiles using linear elastic membrane theory. We suggest that this method could be a useful tool for quantifying the mechanical properties of the shell material of an ultrasound contrast agent microbubble.