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Radiation Force (radiation + force)

Distribution by Scientific Domains
Physics and Astronomy100%

Selected Abstracts

Radiation force mediated by exciton of a carbon nanotube

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 1 2009
Hiroshi Ajiki
Abstract Resonant radiation force exerted on a single-walled carbon nanotube is theoretically studied. Even under weak laser irradiation at room temperature, the acceleration of a nanotube caused by a radiation force becomes significantly large in the resonant excitation conditions of an exciton. The spectral peak frequencies of the acceleration are sensitive to the diameter of nanotubes and to the light polarization. These features are quite useful for nondestructive remote sorting and collection of nanotubes with desired structure and alignment. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Force control between nanostructures by coupling of spatially separated polaritons

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 10 2006
Takuya Iida
Abstract We theoretically propose a novel metrology technique based on the photomediated force control between nano-objects. In order to demonstrate the potential of this concept, we develop the general theoretical framework based on the Lorentz force equation and the nonlocal theory to obtain a concise analytical expression of the interparticle radiation force (IRF) due to the induced fields from polaritons in different nano-objects. This expression clearly shows how IRF reflects the electromagnetic coupling of spatially separated polaritons and contains information on the other nanostructure. This means that IRF can be used to access the multidirectional information of quantum properties in the target nanostructure. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Instabilities in two-fluid magnetized media with inter-component drift

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Issue 1 2002
P. V. Tytarenko
Abstract We analyse the stability of a magnetized medium consisting of a neutral fluid and a fluid of charged particles, coupled to each other through a drag force and exposed to differential body forces (for example, as the result of radiation forces on one phase). We consider a uniform equilibrium and simple model input physics, but do not arbitrarily restrict the relative orientations of the magnetic field, slip velocity and wavevector of the disturbance. We find several instabilities and classify these in terms of wave resonances. We briefly apply our results to the structure of SiO maser regions appearing in the winds from late-type stars. [source]