Tractor beams have received increasing attention. The generation of tractor beams is an important issue in practical applications. In this paper, Pancharatnam-Berry (PB) metasurfaces were designed to generate non-paraxial Bessel tractor beams. The optical pulling forces (OPFs) exerted on dielectric particles with specific radii on the axis of the non-paraxial Bessel beam were obtained. The presence of OPFs depended on the size of the particles, indicating the potential of the non-paraxial Bessel tractor beam for separating particles. Such a feature illustrated the possibility of selective optical manipulation and sorting. This setup of metasurface has good potential in such aspects as lab-on-a-chip.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.