Monolayer WS₂ Nanopores for DNA Translocation with Light-Adjustable Sizes.

ABSTRACT: Two-dimensional materials are promising for a range of applications, as well as testbeds for probing the physics of low-dimensional systems. Tungsten disulfide (WS₂) monolayers exhibit a direct band gap and strong photoluminescence (PL) in the visible range, opening possibilities for advanced optoelectronic applications. Here, we report the realization of two-dimensional nanometer-size pores in suspended monolayer WS₂ membranes, allowing for electrical and optical response in ionic current measurements. A focused electron beam was used to fabricate nanopores in WS₂ membranes suspended on silicon-based chips and characterized using PL spectroscopy and aberration-corrected high-resolution scanning transmission electron microscopy. It was observed that the PL

SUBMITTER: Danda G 

PROVIDER: S-EPMC5893941 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature