We demonstrate laser manipulation of different nematic and smectic liquid crystal droplets in heavy water. Peculiarities of laser trapping and manipulation depending on the molecular structure of liquid crystal are discussed. Possibility of molecular reordering inside the tweezed droplet is demonstrated. This phenomenon can be used to induce the birefringence and to manipulate droplets, which have a small birefringence, e.g., a radial droplet of negligible birefringence can be turned into a birefringent one at high laser trapping power. This is a demonstration of the optical nonlinear effect being responsible for a micro-mechanical phenomenon such as spinning of the droplet in a circularly polarized laser tweezers. Three-photon absorption of MBAPB dye at 1064 nm wavelength is demonstrated inside the liquid crystal droplet at comparatively low similar to 60 MW/cm(2) intensity.
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Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Zhou, Ye
Bukusoglu, Emre
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Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Bukusoglu, Emre
Martinez-Gonzalez, Jose A.
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Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Martinez-Gonzalez, Jose A.
Rahimi, Mohammad
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Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Rahimi, Mohammad
Roberts, Tyler F.
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Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Roberts, Tyler F.
Zhang, Rui
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Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Zhang, Rui
Wang, Xiaoguang
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Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Wang, Xiaoguang
Abbott, Nicholas L.
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Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Abbott, Nicholas L.
de Pablo, Juan J.
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Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA
Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USAUniv Chicago, Inst Mol Engn, Chicago, IL 60637 USA