Cubic-Phase Metasurface for Three-Dimensional Optical Manipulation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Hsin Yu Kuo
  • Sunil Vyas
  • Cheng Hung Chu
  • Xu Shi
  • Hiroaki Misawa
  • Yu-Jung Lu
  • Yuan Luo

Detail(s)

Original languageEnglish
Article number1730
Number of pages13
Journal / PublicationNanomaterials
Volume11
Issue number7
Online published30 Jun 2021
Publication statusPublished - Jul 2021
Externally publishedYes

Abstract

The optical tweezer is one of the important techniques for contactless manipulation in biological research to control the motion of tiny objects. For three-dimensional (3D) optical manipulation, shaped light beams have been widely used. Typically, spatial light modulators are used for shaping light fields. However, they suffer from bulky size, narrow operational bandwidth, and limitations of incident polarization states. Here, a cubic-phase dielectric metasurface, composed of GaN circular nanopillars, is designed and fabricated to generate a polarization-independent vertically accelerated two-dimensional (2D) Airy beam in the visible region. The distinctive propagation characteristics of a vertically accelerated 2D Airy beam, including non-diffraction, self-acceleration, and self-healing, are experimentally demonstrated. An optical manipulation system equipped with a cubic-phase metasurface is designed to perform 3D manipulation of microscale particles. Due to the high-intensity gradients and the reciprocal propagation trajectory of Airy beams, particles can be laterally shifted and guided along the axial direction. In addition, the performance of optical trapping is quantitatively evaluated by experimentally measured trapping stiffness. Our metasurface has great potential to shape light for compact systems in the field of physics and biological applications.

Research Area(s)

  • dielectric metasurface, vertically accelerated 2D Airy beam, 3D optical manipulation, VARIFOCAL METALENS, BROAD-BAND, PARTICLES, MICROPARTICLES, GENERATION, WAVE, CELL

Citation Format(s)

Cubic-Phase Metasurface for Three-Dimensional Optical Manipulation. / Kuo, Hsin Yu; Vyas, Sunil; Chu, Cheng Hung; Chen, Mu Ku; Shi, Xu; Misawa, Hiroaki; Lu, Yu-Jung; Luo, Yuan; Tsai, Din Ping.

In: Nanomaterials, Vol. 11, No. 7, 1730, 07.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review