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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

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A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
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Capacitor With A Dielectric01:18

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Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
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Updated: Nov 3, 2025

Elaborate Control of Inkjet Printer for Fabrication of Chip-based Supercapacitors
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Electroactive 1T-MoS2 Fluoroelastomer Ink for Intrinsically Stretchable Solid-State In-Plane Supercapacitors.

Kaliannan Thiyagarajan1, Woo-Jin Song2, Hyeji Park1

  • 1Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk 37673, Republic of Korea.

ACS Applied Materials & Interfaces
|June 4, 2021
PubMed
Summary

Researchers developed a new stretchable, printable ink using 1T-molybdenum disulfide (1T-MoS2) and fluoroelastomer (FE) for advanced stretchable electronics. This innovation enables high-performance, solid-state stretchable supercapacitors for wearable devices.

Keywords:
Metallic-phase MoS2intrinsic stretchabilitypolymer composite inkporous stretchable electrodestretchable supercapacitor

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Stretchable electronic devices require integrated, high-performance power sources.
  • Existing power sources often lack the necessary stretchability and integration capabilities.
  • Solid-state stretchable supercapacitors offer a promising solution for powering flexible electronics.

Purpose of the Study:

  • To develop a novel intrinsically stretchable and printable electroactive ink.
  • To create high-performance stretchable supercapacitors for wearable electronics.
  • To explore the potential of 1T-molybdenum disulfide (1T-MoS2) in stretchable energy storage.

Main Methods:

  • Fabrication of an electroactive ink by combining 1T-MoS2 nanosheets with a fluoroelastomer (FE).
  • Preparation of the active material (1T-MoS2/FE) through high-power ultrasonication and fluorination.
  • Printing the ink onto stretchable gold collector electrodes to form supercapacitor devices.

Main Results:

  • The 1T-MoS2/FE ink exhibits unconventional mixed crystal structures (1T and 2H).
  • Printed supercapacitors demonstrate intrinsic stretchability (>50%) and good capacitance (28 mF cm-2).
  • All-solid-state stretchable supercapacitors achieve 40% stretchability with 80% capacity retention.

Conclusions:

  • A new intrinsically stretchable, printable electroactive ink based on 1T-MoS2/FE was successfully developed.
  • The developed ink enables the fabrication of high-performance, stretchable supercapacitors.
  • This printable device platform facilitates in-plane fabrication of stretchable micro-supercapacitors for wearable applications.