Atomistic modeling and rational design of optothermal tweezers for targeted applications.

ABSTRACT: Optical manipulation of micro/nanoscale objects is of importance in life sciences, colloidal science, and nanotechnology. Optothermal tweezers exhibit superior manipulation capability at low optical intensity. However, our implicit understanding of the working mechanism has limited the further applications and innovations of optothermal tweezers. Herein, we present an atomistic view of opto-thermo-electro-mechanic coupling in optothermal tweezers, which enables us to rationally design the tweezers for optimum performance in targeted applications. Specifically, we have revealed that the non-uniform temperature distribution induces water polarization and charge separation, which creates the thermoelectric field dominating the optothermal trapping. We further design experiments to systematica

SUBMITTER: Ding H 

PROVIDER: S-EPMC9037963 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature