Optical Chromatography

Imasaka, Totaro; Kawabata, Yuji; Kaneta, Takashi; Ishidzu, Yasunori.

doi:10.1021/ac00107a003

Cited by 126 publications

(99 citation statements)

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“…A straightforward anticipated application is the development of chiral optical sorting, which would bring enhanced functionality to optical chromatography [26]. This allows us to envision applications for the pharmaceutical industry related to the ability to sort materials with different chiralities.…”

Section: H Y S I C a L R E V I E W L E T T E R Smentioning

confidence: 99%

Spin Controlled Optical Radiation Pressure

Tkachenko

Brasselet

2013

Phys. Rev. Lett.

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International audienceWe report on the full control of the optical radiation pressure at fixed photon flux and incident angle by the photon spin. This is done by using transparent chiral liquid crystal droplets that enable a strong coupling between the linear and angular degrees of freedom of a light field. From these results, we anticipate optical sorting of particles with different chirality as well as novel optical trapping and micromanipulation strategies

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Section: H Y S I C a L R E V I E W L E T T E R Smentioning

confidence: 99%

Spin Controlled Optical Radiation Pressure

Tkachenko

Brasselet

2013

Phys. Rev. Lett.

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“…Th e precise control and positioning of dielectric particles using optical trapping techniques can enable promising biomedical applications related to micro-manipulation of cells, bacteria and viruses 7,8 . Various optical tweezing technologies for fl ow cytometry 9 , single-molecule analysis 10,11 , photonic force microscopy 12 and optical chromatography 13 were also developed. However, these conventional optical trapping techniques based on free space optics suff er from several drawbacks, such as diff raction-limited trapping volume and signifi cant Brownian motion of the trapped nanoparticles, when the size of trapped particles becomes smaller than light wavelengths 14 -16 .…”

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confidence: 99%

Low-power nano-optical vortex trapping via plasmonic diabolo nanoantennas

et al. 2011

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Optical vortex trapping can allow the capture and manipulation of micro-and nanometresized objects such as damageable biological particles or particles with a refractive index lower than the surrounding material. However, the quest for nanometric optical vortex trapping that overcomes the diffraction limit remains. Here we demonstrate the fi rst experimental implementation of low-power nano-optical vortex trapping using plasmonic resonance in gold diabolo nanoantennas. The vortex trapping potential was formed with a minimum at 170 nm from the central local maximum, and allowed polystyrene nanoparticles in water to be trapped strongly at the boundary of the nanoantenna. Furthermore, a large radial trapping stiffness, ~ 0.69 pN nm − 1 W − 1 , was measured at the position of the minimum potential, showing good agreement with numerical simulations. This subwavelength-scale nanoantenna system capable of low-power trapping represents a signifi cant step toward versatile, effi cient nano-optical manipulations in lab-on-a-chip devices.

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“…We demonstrated the analysis of mixed colorless organic droplets, 2-fluorotoluene and anethole, in water by the deference of the photophoretic velocity. The size separation of transparent particles in water has been reported by Imasaka et al 12 They proposed "Optical chromatography" for the size separation of particles by radiation pressure combined with counter flow of the medium. In their experiment, a laser beam was focused into the sample solution in a capillary, which was counter-flowed coaxially to the beam.…”

Section: ·3 Photophoresis Of Transparent Micro-particlesmentioning

confidence: 99%

Migration Analysis of Micro-Particles in Liquids Using Microscopically Designed External Fields

et al. 2004

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The recent development of new migration methods of micro-particles in liquids using various external fields is reviewed. The combination of a laser scattering force and a photothermal effect produced photothermal-conversion laserphotophoresis. A dielectric field generated in a planer or a capillary quadrupole electrode realized dielectrophoresis. Using a micrometer-scaled magnetic field gradient, the "Magnetophoretic velocimetry" of micro-particles was invented. Furthermore, the Lorentz force generated by combining an electric field and a magnetic field was utilized for electromagnetophoresis. These new methods were overlooked and the advantages in analytical use were discussed.

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Optical Chromatography

Cited by 126 publications

References 0 publications

Spin Controlled Optical Radiation Pressure

Spin Controlled Optical Radiation Pressure

Low-power nano-optical vortex trapping via plasmonic diabolo nanoantennas

Migration Analysis of Micro-Particles in Liquids Using Microscopically Designed External Fields

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