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Liquid crystal microresonators are widely used in optics and photonics applications due to their small dimensions, very high Q-factor and their tunability properties. Microfluidics allows a precise generation of liquid crystal droplets characterized by narrow droplets diameter distributions. Droplets with different internal configurations, bipolar and radial, can be generated in the nematic and isotropic...
A way to measure flow rate inside a microchannel using a contactless optical technique is reported. The optofluidic device consists of a Bragg grating written on a soft wall, namely a Mylar stripe glued on the top of a microfluidic channel. Diffraction of a white-light probe beam is used to detect the small displacements of the grating caused by the liquid flowing inside the microchannel. A simple...
Liquid crystal droplets are widely used in optics and photonics applications. They can act as simple resonators or be arranged in interconnected periodic configurations when their external dimension are similar. In this work we optically analyze and describe the microfluidic generation of liquid crystal droplets in a thermally stabilized environment, namely water, which enables a narrow droplets diameter...
We report on recent research in the field of optical processing with microlasers, high density optical storage media and all-optical switching devices. By combining different materials and optical holography some devices which show attractive optical properties and interesting wide range of potential applications will be presented.
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