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Related Concept Videos

Schottky Barrier Diode01:27

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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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Diode: Reverse bias01:14

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A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
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Gas Chromatography: Types of Detectors-II01:19

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In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
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In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
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Gas Chromatography: Types of Detectors-I01:21

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Updated: Mar 29, 2026

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A Compact 380 GHz Zero-Bias Schottky Diode Detector for High-Sensitivity Radiometer Applications.

Huilin Tang1,2, Yongsheng Deng1, Dehai Zhang1

  • 1The CAS Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China.

Micromachines
|March 28, 2026
PubMed
Summary
This summary is machine-generated.

This study presents a robust 380 GHz zero-bias terahertz detector using an ACST Schottky diode. The novel design enhances sensitivity and stability for advanced radiometer systems.

Keywords:
THz detectordirect groundingradiometer receiverzero-bias Schottky diode

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Area of Science:

  • Terahertz technology
  • Solid-state device physics

Background:

  • Terahertz (THz) radiometer receiver systems require highly sensitive and robust detectors.
  • Existing detectors may face challenges with parasitic resonances and system integration.

Purpose of the Study:

  • To design, fabricate, and characterize a novel 380 GHz zero-bias detector.
  • To improve detector sensitivity, output stability, and system integration for THz applications.

Main Methods:

  • Utilized an ACST Schottky diode for the detector.
  • Implemented a high-impedance grounding topology to minimize parasitic resonances.
  • Adopted a compact U-shaped waveguide transition for an inline port configuration.

Main Results:

  • Achieved a peak voltage responsivity of 2318 V/W at 380 GHz.
  • Demonstrated excellent linearity with a value of 0.9996.
  • The design validated the effectiveness of the proposed topology and transition.

Conclusions:

  • Established a practical design approach for zero-bias terahertz detectors.
  • The developed detector supports future high-frequency radiometer and sensing applications.
  • The design offers enhanced sensitivity and structural robustness.