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Related Concept Videos

Field Effect Transistor01:29

Field Effect Transistor

1.3K
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...
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Plastic Deformations01:19

Plastic Deformations

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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
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Plastic Deformations01:14

Plastic Deformations

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It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
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Bipolar Junction Transistor01:22

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Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
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Temperature Dependent Deformation01:12

Temperature Dependent Deformation

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In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
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Deformations in a Symmetric Member in Bending01:18

Deformations in a Symmetric Member in Bending

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When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
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Related Experiment Video

Updated: Feb 15, 2026

Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
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Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications

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Deformable Organic Nanowire Field-Effect Transistors.

Yeongjun Lee1,2, Jin Young Oh2, Taeho Roy Kim3

  • 1Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)
|January 10, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed highly deformable organic nanowire field-effect transistors (FETs) for implantable bioelectronics. These robust electronic devices maintain stable output on dynamic soft surfaces, mimicking biological functions.

Keywords:
biomedical electronicsdeformable electronicsnanowire electronicsnanowire transistorsstretchable transistors

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Bioelectronics

Background:

  • Deformable electronics are crucial for next-generation implantable bioelectronic devices.
  • Existing devices often lack robustness on dynamically changing soft matter surfaces.

Purpose of the Study:

  • To present deformable field-effect transistors (FETs) based on organic nanowires (NWs).
  • To demonstrate their stable operation on dynamic soft matter surfaces for biomedical applications.

Main Methods:

  • Fabrication of FETs using fused thiophene diketopyrrolopyrrole polymer semiconductor NWs and polyethylene oxide.
  • Integration of poly(vinylidenefluoride-co-trifluoroethylene) as a polymer dielectric.
  • Engineering serpentine-like structures for enhanced NW reliability and durability.

Main Results:

  • Achieved high field-effect mobility (>8 cm^2 V^-1 s^-1).
  • Demonstrated significant deformability under 100% tensile and compressive strains.
  • Exhibited stable current output during >1700% 3D volume changes of a rubber balloon.
  • Showed robust operation on a pulsating balloon mimicking a beating heart without degradation.

Conclusions:

  • The developed NW FETs offer exceptional mechanical robustness and electrical stability on dynamic soft surfaces.
  • These deformable transistors hold significant promise for advanced biomedical applications, particularly in implantable devices.