Lateral optical forces on two chiral nanospheres in plane waves of linear polarization

Hongsheng Shi; Yusen Zhang; Ziheng Xiu; Hongxia Zheng; Huajin Chen

doi:10.1117/12.2587138

24 December 2020 Lateral optical forces on two chiral nanospheres in plane waves of linear polarization

Hongsheng Shi, Yusen Zhang, Ziheng Xiu, Hongxia Zheng, Huajin Chen

Proceedings Volume 11608, Optics Frontiers Online 2020: Micro and Nanophotonics (OFO-4 2020); 116080A (2020) https://doi.org/10.1117/12.2587138
Event: Optics Frontiers Online 2020: Micro and Nanophotonics (OFO-4 2020), 2020, Online Only

Abstract

Based on the Maxwell stress tensor method and the full wave simulations, we show that a lateral optical force (LOF) can be induced on a pair of spherical nanoparticles with different chiral combinations under the illumination of plane waves with the linear polarization either parallel or normal to the axis of the two nanospheres. It is demonstrated that the LOF can appear on each particle in the direction perpendicular to the particles' axis and the light propagation when either one or two particles have the chirality. Such an LOF can be tailored by both the magnitude and handedness of the particle chirality as well as the incident linear polarizations. Using the analytical expression of optical forces based on the dipole approximation, the physical origin of the LOF can be traced to many channels, including the gradient force, the radiation force, the curl force, and the spin force due to the inter-particle interaction mediated by the light. Our results might find applications in chiral discrimination such as chiral molecular and biological cells.

Citation Download Citation

Hongsheng Shi, Yusen Zhang, Ziheng Xiu, Hongxia Zheng, and Huajin Chen "Lateral optical forces on two chiral nanospheres in plane waves of linear polarization", Proc. SPIE 11608, Optics Frontiers Online 2020: Micro and Nanophotonics (OFO-4 2020), 116080A (24 December 2020); https://doi.org/10.1117/12.2587138

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

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.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available