Whirl-enhanced continuous wave laser trapping of particles
نویسندگان
چکیده
منابع مشابه
Whirl-enhanced continuous wave laser trapping of particles.
Tightly focused laser beams can trap micro- and nanoparticles suspended in liquids in their focal spots enabling different functionalities including 3D manipulations and assembling. Here, we report on remarkably strong liquid-liquid phase separation and crystallization experiments in para-nitroaniline dissolved in 1,4-dioxane. For optical trapping of para-nitroaniline we used low-power, weakly ...
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We propose and demonstrate a purely optical approach to trap and align particles using the interaction of polarized light with periodic nanostructures to generate enhanced trapping force. With a weakly focused laser beam, we observed efficient trapping and transportation of polystyrene beads with sizes ranging from 10 mum down to 190 nm as well as cancer cell nuclei. In addition, alignment of n...
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Recent demonstrations 1-5 of room-temperature upconversion lasers have stirred interest in their potential as practical sources of short wavelength radiation for display and data storage applications, as well as for communications and ultrashort pulse generation at visible and ultraviolet wavelengths.6 To date however, little consideration has been given to the relative merits of various fundam...
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The first laser to operate with an output wavelength shorter than that of the excitation was a pulsed erbium laser reported by Johnson and Guggenheim.l Since this early work, a variety of continuous-wave lasers have been reported in which upconversion occurs by different mechanisms, and inversions of upconverted energy levels have been sustained by avalanche processes, 2.3 direct pairpumping,4 ...
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ژورنال
عنوان ژورنال: Physical Chemistry Chemical Physics
سال: 2015
ISSN: 1463-9076,1463-9084
DOI: 10.1039/c4cp04008b