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Related Concept Videos

MOSFET01:16

MOSFET

The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) plays a pivotal role in modern electronics thanks to its versatility and efficiency in controlling electrical currents. This device, also known as IGFET, MISFET, and MOSFET, has three main terminals: the Source, Drain, and Gate. MOSFETs are classified into n-channel or p-channel types based on the doping characteristics of their substrate and the source or drain regions.
In an n-MOSFET, the structure includes n-type source and drain...
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.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
Characteristics of MOSFET01:17

Characteristics of MOSFET

Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...
MOSFET: Depletion Mode01:20

MOSFET: Depletion Mode

Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity arises...
Field Effect Transistor01:29

Field Effect Transistor

Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
MOS Capacitor01:25

MOS Capacitor

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.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...

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Related Experiment Video

Updated: Jun 2, 2026

Writing and Low-Temperature Characterization of Oxide Nanostructures
06:43

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

Sketched oxide single-electron transistor.

Guanglei Cheng1, Pablo F Siles, Feng Bi

  • 1Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.

Nature Nanotechnology
|April 19, 2011
PubMed
Summary
This summary is machine-generated.

Researchers created novel single-electron transistors by sketching oxide interfaces. These devices enable precise control over electron tunneling for advanced electronics and quantum computing applications.

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Last Updated: Jun 2, 2026

Writing and Low-Temperature Characterization of Oxide Nanostructures
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Published on: July 18, 2014

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Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors
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Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors

Published on: January 31, 2025

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Single-electron devices are crucial for advancing electronics, pushing the limits of miniaturization.
  • Existing single-electron transistors have been developed using various materials, showcasing diverse electronic, optical, and spintronic functionalities.

Discussion:

  • This study introduces a novel method for fabricating single-electron transistors by reversibly controlling a metal-insulator transition at oxide interfaces using an atomic force microscope tip.
  • The fabricated devices feature a conducting oxide island of approximately 1.5 nm in diameter, enabling resonant single-electron tunneling between source and drain electrodes.
  • Control over the number of electrons on the island is achieved via bottom- and side-gate electrodes, with observed hysteresis linked to ferroelectricity in the oxide heterostructure.

Key Insights:

  • Demonstration of reversible single-electron transistor fabrication using atomic force microscopy on oxide interfaces.
  • Observation of resonant single-electron tunneling through nanoscale (∼1.5 nm) conducting oxide islands.
  • Evidence of ferroelectric-induced hysteresis in electron occupation, enabling non-volatile characteristics.

Outlook:

  • Potential applications include ultradense non-volatile memories.
  • Development of nanoscale hybrid piezoelectric and charge sensors.
  • Foundation for building blocks in quantum information processing and quantum simulation platforms.