2023 article

Synthesis of laser-patterned MoS2 nanoneedles for advanced electrochemical sensing

Joshi, P., Shukla, S., Gupta, S., Joshi, N., Narayan, J., & Narayan, R. (2023, June 14). MRS COMMUNICATIONS.

By: P. Joshi n, S. Shukla n, S. Gupta* , N. Joshi n , J. Narayan n  & R. Narayan n

author keywords: Laser annealing; Laser-induced reaction; Nanostructure; Sensor
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: July 3, 2023

We describe a novel excimer laser-based route for the fabrication of crystalline MoS2 nanoneedles. Laser annealing of MoS2 thin films at a low energy density of 0.08 Jcm−2 resulted in a closed-pack structure with low defects and excellent conductivity due to melting and rapid quenching. A further increase in laser annealing energy density resulted in the formation of MoS2 nano-needles. This structure of MoS2 was found to have a remarkable reduction ability for H2O2 at − 0.14 V over a wide linear range; a low detection limit (0.45 nM (S/N = 3)) and sensitivity of 2.38 μA/mM cm−2 were demonstrated.