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Related Concept Videos

Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
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Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
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There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
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Field Effect Transistor01:29

Field Effect Transistor

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Related Experiment Video

Updated: May 11, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
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Metal foil gap switch and its electrical properties.

Junjun Lv1, Qingxuan Zeng, Mingyu Li

  • 1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, People's Republic of China.

The Review of Scientific Instruments
|May 3, 2013
PubMed
Summary
This summary is machine-generated.

A novel metal foil spark gap switch was developed to minimize exploding initiator systems. This switch demonstrates linear self-breakdown voltage characteristics and achieves low time jitter for reliable high-voltage applications.

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Physics

Background:

  • Exploding initiator systems often require bulky components.
  • There is a need for compact and efficient high-voltage switching solutions.

Purpose of the Study:

  • To design and fabricate a miniaturized metal foil spark gap switch.
  • To characterize the discharge properties of the switch under varying nitrogen pressures.
  • To evaluate the performance of the switch compared to commercial alternatives.

Main Methods:

  • Fabrication using magnetron sputter deposition and microelectronic technology.
  • Dimensional analysis using a stylus profiler.
  • Discharge characterization under nitrogen atmosphere at pressures from 0.5 to 1.75 bars.
  • Performance comparison with a commercial stereo spark gap switch.

Main Results:

  • The metal foil spark gap switch was successfully fabricated.
  • A linear relationship was observed between self-breakdown voltage and the product of pressure and distance.
  • The switch exhibited short delay time and low time jitter when operated at 70%-90% of its self-breakdown voltage.
  • The firing circuit demonstrated lower inductance and higher resistance compared to a conventional capacitive discharge unit.

Conclusions:

  • The developed metal foil spark gap switch offers a compact alternative for reducing the volume of exploding initiator systems.
  • The switch's performance is predictable and reliable within a specific operating voltage range.
  • The fabrication method is compatible with standard microelectronic processes, suggesting potential for integration.