Microsteganography on WS2 Monolayers Tailored by Direct Laser Painting
Source abstract
Abstract
We present scanning focused laser beam as a multipurpose tool to engineer the physical and chemical properties of WS 2 microflakes. For monolayers, the laser modification integrates oxygen into the WS 2 microflake, resulting in ∼9 times enhancement in the intensity of the fluorescence emission. This modification does not cause any morphology change, allowing “micro-encryption” of information that is only observable as fluorescence under excitation. The same focused laser also facilitates on demand thinning down of WS 2 multilayers into monolayers, turning them into fluorescence active components. With a scanning focused laser beam, micropatterns are readily created on WS 2 multilayers through selective thinning of specific regions on the flake.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: 2D Materials and Applications · MXene and MAX Phase Materials · Energy Harvesting in Wireless Networks
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
NUS High School of Mathematics and Science, 20 Clementi Avenue 1, Singapore 129957
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
Institute of Materials Research and Engineering, Agency for Science, Technology, and Research (A*STAR), 2 Fusionopolis Way, lnnovis, #08-03, Singapore 138634
Center for Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 3, Singapore 117546
Funding
Ministry of Education - Singapore
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