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Related Concept Videos

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...
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...
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...
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...
Biasing of FET01:22

Biasing of FET

Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...
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...

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Related Experiment Video

Updated: Jun 8, 2026

In Vitro Multiparametric Cellular Analysis by Micro Organic Charge-modulated Field-effect Transistor Arrays
10:05

In Vitro Multiparametric Cellular Analysis by Micro Organic Charge-modulated Field-effect Transistor Arrays

Published on: September 20, 2021

Field-effect-transistor self-electro-optic-effect-device (FET-SEED) electrically addressed differential modulator

A L Lentine, L M Chirovsky, L Arthur D'Asaro

    Applied Optics
    |October 2, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study presents a 6x6 array of field-effect-transistor self-electro-optic-effect-device modulators. These devices enable low-voltage control of high-voltage modulators, achieving high speeds with minimal variations.

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    Sensing of Barrier Tissue Disruption with an Organic Electrochemical Transistor

    Published on: February 10, 2014

    Area of Science:

    • Optoelectronics
    • Integrated Photonics
    • Semiconductor Devices

    Background:

    • Self-electro-optic-effect devices (SEEDs) are crucial for optical switching.
    • Integrating amplification with SEEDs is necessary for low-voltage operation.
    • Large arrays of modulators are required for advanced optical systems.

    Purpose of the Study:

    • To develop and characterize a 6x6 array of electrically addressed field-effect-transistor SEED differential modulators.
    • To enable low input voltage control (<1 V) for high output voltage modulators (>10 V).
    • To assess the performance of individual array elements and inter-element crosstalk.

    Main Methods:

    • Fabrication of a 6x6 array integrating field-effect transistors (FETs) with SEEDs.
    • Electrical addressing and characterization of differential modulator elements.
    • Measurement of switching voltage variations, crosstalk, and switching times.

    Main Results:

    • Demonstration of a 6x6 array with low switching voltage variations (<±70 mV).
    • Individual array elements operated at speeds up to 2 Gbits/s.
    • Characterization of crosstalk and switching time dependencies on input voltage and photocurrent.

    Conclusions:

    • The developed FET-SEED array offers efficient, low-voltage control of high-voltage optical modulators.
    • The array exhibits high-speed operation and low inter-element crosstalk, suitable for integrated photonic applications.
    • The findings pave the way for scalable, high-performance optical modulator arrays.