NDA@SZTAKI

Dimensionality constraints of light-induced rotation

Oroszi, László

Búzás, András

Galajda, PĂ©ter

Kelemen, Lóránd

Mathesz, Anna

Vicsek, Tamás

Vizsnyiczai, Gaszton

Ormos, Pál

AIP Publishing

2015

QC02 Optics / fénytan

We have studied the conditions of rotation induced by collimated light carrying no angular momentum. Objects of different shapes and optical properties were examined in the nontrivial case where the rotation axis is perpendicular to the direction of light propagation. This geometry offers important advantages for application as it fundamentally broadens the possible practical arrangements to be realised. We found that collimated light cannot drive permanent rotation of 2D or prism-like 3D objects (i.e., fixed cross-sectional profile along the rotation axis) in the case of fully reflective or fully transparent materials. Based on both geometrical optics simulations and theoretical analysis, we derived a general condition for rotation induced by collimated light carrying no angular momentum valid for any arrangement: Permanent rotation is not possible if the scattering interaction is two-dimensional and lossless. In contrast, light induced rotation can be sustained if partial absorption is present or the object has specific true 3D geometry. We designed, simulated, fabricated, and experimentally tested a microscopic rotor capable of rotation around an axis perpendicular to the illuminating light. (c) 2015 AIP Publishing LLC.

angol

Article

PeerReviewed

info:eu-repo/semantics/article

text

http://real.mtak.hu/40507/1/OrosziApplPhysLett.pdf

Oroszi, László and Búzás, András and Galajda, Péter and Kelemen, Lóránd and Mathesz, Anna and Vicsek, Tamás and Vizsnyiczai, Gaszton and Ormos, Pál (2015) Dimensionality constraints of light-induced rotation. APPLIED PHYSICS LETTERS, 107 (20). p. 204106. ISSN 0003-6951

http://real.mtak.hu/40507/

http://dx.doi.org/10.1063/1.4936180

MTMT:3000531; doi:10.1063/1.4936180