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Synthesis of Graphene Nanofluids with Controllable Flake Size Distributions
Published on: July 17, 2019
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Modulating capacitive response of MoS2 flake by controlled nanostructuring through focused laser irradiation
Renu Rani1, Anirban Kundu1, Mohammad Balal2
1Institute of Nano Science and Technology, Mohali, Phase-10, Punjab-160062, India.
Nanotechnology
|June 2, 2018
Summary
Researchers fabricated unique molybdenum disulfide (MoS2) nanostructures using focused laser irradiation. These nanostructures exhibit unperturbed capacitive behavior, paving the way for novel capacitive devices.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- Physical properties of nanostructured molybdenum disulfide (MoS2) remain largely unexplored due to challenges in fabrication.
- Graphene nanostructures have well-defined properties, highlighting a gap in MoS2 research.
Purpose of the Study:
- To investigate the unique electrostatic properties of MoS2 nanostructures.
- To establish controlled fabrication routes for MoS2 nanostructures with varying geometries.
- To explore potential applications in capacitive devices.
Main Methods:
- Fabrication of MoS2 nanostructures with controlled geometries on a 2D flake using focused laser irradiation.
- Characterization using electrostatic force microscopy (EFM) with varying tip bias voltage and lift height.
Main Results:
- No contrast flip in phase images of patterned MoS2 nanostructures, indicating the absence of free surface charges.
- Prominent changes in phase shift observed at patterned areas, signifying capacitive interactions.
- Consistent capacitive behavior irrespective of nanostructure shape and size.
Conclusions:
- MoS2 nanostructures exhibit unperturbed capacitive behavior, unaffected by shape or size.
- The controlled fabrication and unique properties enable modulation of capacitance in periodic arrays.
- Potential applications in advanced capacitive devices are highlighted.
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