School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
Opt Lett. 2011 May 15;36(10):1767-9. doi: 10.1364/OL.36.001767.
Miniaturized and tunable optical components, such as the waveguide, lens, and prism, have been of great interest for lab-on-chip systems. This Letter reports an optofluidic aperture stop formed by the liquid-core/liquid-cladding flow. The aperture size can be tuned accordingly by adjusting the flow rates. Manipulation of the aperture size allows control of the amount of light passing through the corresponding optical system as well as the angular aperture on the image side. This optofluidic aperture enables lab-on-chip optical systems to have a greater flexibility and more functionalities.
微型化和可调谐的光学元件，如波导、透镜和棱镜，一直是芯片实验室系统的研究热点。本通信报道了一种由液芯/液壳流形成的光流孔径截止器。通过调整流速，可以相应地调节孔径尺寸。孔径尺寸的控制可以实现对通过相应光学系统的光量以及像侧角孔径的控制。这种光流孔径使芯片实验室光学系统具有更大的灵活性和更多的功能。
