Tailored Langmuir-Schaefer Deposition of Few-Layer MoS Nanosheet Films for Electronic Applications.

Few-layer MoS films stay at the forefront of current research of two-dimensional materials. At present, continuous MoS films are prepared by chemical vapor deposition (CVD) techniques. Herein, we present a cost-effective fabrication of the large-area spatially uniform films of few-layer MoS flakes using a modified Langmuir-Schaefer technique.

An elevated concentration of MoS lowers the efficacy of liquid-phase exfoliation and triggers the production of MoO nanoparticles.

It is generally accepted that liquid-phase exfoliation (LPE) enables large-scale production of few-layer MoS flakes. In our work, we studied in detail few-layer MoS oxidation in the course of standard LPE in a water/ethanol solution. We demonstrate that an increase of the initial MoS concentration above a certain threshold triggers a pronounced oxidation and the exfoliation process starts to produce MoO nanoparticles.

Plume Dynamics of Laser-Produced Swine Muscle Tissue Plasma.

We report on the plume dynamics of the plasma induced by laser ablation of a swine skeletal muscle tissue sample in different vacuum conditions. Pulses from a transversely excited atmospheric CO2 laser were focused onto a target sample and the induced plasma was allowed to expand in different air pressures. The expansion features were studied using fast photography of the overall visible emission by using a gated intensified charged coupled device.