Please use this identifier to cite or link to this item:
Title: Material-independent and size-independent tractor beams for dipole objects
Authors: Novitsky, A.
Qiu, C.-W. 
Lavrinenko, A.
Issue Date: 12-Jul-2012
Source: Novitsky, A., Qiu, C.-W., Lavrinenko, A. (2012-07-12). Material-independent and size-independent tractor beams for dipole objects. Physical Review Letters 109 (2) : -. ScholarBank@NUS Repository.
Abstract: A Bessel beam without an axial gradient can exert a pulling force on an object [A. Novitsky, C.W. Qiu, and H. Wang, Phys. Rev. Lett. 107, 203601 (2011)PRLTAO0031-900710.1103/PhysRevLett.107.203601]. However, it cannot be called a "tractor beam" per se, as long as the light pulling effect is ultrasensitive to the object's material and size, a perturbation of which will make the optical traction go away. In this Letter, we investigate and report on the universality for a Bessel beam to be either a material-independent or size-independent optical tractor beam within the dipolar regime. Moreover, a general condition for a nonparaxial laser to be simultaneously a material- and size-independent tractor beam is proposed. These universal pulling effects and conditions are discussed in association with insight on modified far-field scattering, scattering resonances, and induced polarizabilities. Interestingly, we find that the acoustic pulling force exhibits only size independence, owing to the acoustic scattering theory in contrast to the light scattering counterpart. The findings pave the way for the realistic engineering and application of universal tractor beams pulling a wide variety of objects. © 2012 American Physical Society.
Source Title: Physical Review Letters
ISSN: 00319007
DOI: 10.1103/PhysRevLett.109.023902
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 7, 2018


checked on Jan 30, 2018

Page view(s)

checked on Mar 11, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.