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Related Concept Videos

MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
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Schottky barrier diodes are specialized semiconductor devices characterized by their unique construction. This construction involves combining a metal layer with a moderately doped n-type semiconductor material. This combination leads to the formation of a Schottky barrier, a pivotal element that defines the diode's operational characteristics. The core functionality of Schottky barrier diodes is their capacity to allow current to flow in only one direction due to their distinctive...
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Related Experiment Video

Updated: May 11, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

An all-optical, non-volatile, bidirectional, phase-change meta-switch.

Behrad Gholipour1, Jianfa Zhang, Kevin F MacDonald

  • 1Optoelectronics Research Centre & Centre for Photonic Metamaterials, University of Southampton, SO17 1BJ, UK.

Advanced Materials (Deerfield Beach, Fla.)
|April 30, 2013
PubMed
Summary
This summary is machine-generated.

This study demonstrates non-volatile, all-optical switching using phase-change metamaterials. The technology enables high-contrast modulation for infrared light in ultra-thin devices.

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Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Related Experiment Videos

Last Updated: May 11, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
09:49

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

Published on: May 13, 2020

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Area of Science:

  • Optoelectronics
  • Materials Science
  • Nanotechnology

Background:

  • Metamaterials offer unique light-matter interactions.
  • Optical switching is crucial for advanced photonic devices.
  • Phase-change materials provide tunable optical properties.

Purpose of the Study:

  • To develop non-volatile, all-optical switching.
  • To achieve high-contrast modulation in the infrared spectrum.
  • To miniaturize optical switching devices.

Main Methods:

  • Utilized phase-change metamaterials for optical switching.
  • Fabricated ultra-thin device structures (≈1/27 wavelength thick).
  • Investigated switching performance at near- to mid-infrared wavelengths.

Main Results:

  • Achieved non-volatile, bidirectional all-optical switching.
  • Demonstrated high-contrast transmission and reflection modulation.
  • Confirmed functionality in sub-wavelength thick devices.

Conclusions:

  • Phase-change metamaterials enable efficient optical switching.
  • The developed devices are suitable for infrared applications.
  • Miniaturized optical switches are feasible with this technology.