Multi-pulse laser-induced bubble formation and nanoparticle aggregation using MoS₂ nanoparticles.

ABSTRACT: Understanding of how particles and light interact in a liquid environment is vital for optical and biological applications. MoS₂ has been shown to enhance nonlinear optical phenomena due to the presence of a direct excitonic resonance. Its use in biological applications is predicated on knowledge of how MoS₂ interacts with ultrafast (< 1 ps) pulses. In this experiment, the interaction between two femtosecond pulses and MoS₂ nanoparticles suspended in liquid is studied. We found that the laser pulses induce bubble formation on the surface of a nanoparticle and a nanoparticle aggregate then forms on the surface of the trapped bubble. The processes of formation of the bubble and the nanoparticle aggregation are intertwined.

SUBMITTER: Ko B 

PROVIDER: S-EPMC7519087 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature