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Related Concept Videos

Electromagnetic Fields01:30

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Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
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The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
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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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Induced Electric Fields: Applications01:27

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An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
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3D-Printed Carbon-Based Conformal Electromagnetic Interference Shielding Module for Integrated Electronics.

Shaohong Shi1,2, Yuheng Jiang1, Hao Ren1

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Researchers developed 3D-printed carbon-based conformal shielding (c-SE) modules to replace bulky metal components in electronics. These lightweight, high-performance modules offer superior electromagnetic interference shielding without occupying extra space.

Keywords:
3D printingCarbon-based nanoparticlesConformal electromagnetic interference shieldingIntegrated electronics

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Nanotechnology

Background:

  • Traditional metal-based electromagnetic interference shielding (EMI SE) modules occupy valuable space in electronics, hindering miniaturization.
  • Integrating shielding directly with electronic packaging is crucial for advanced device design.

Purpose of the Study:

  • To develop 3D-printable carbon-based inks for creating conformal shielding (c-SE) modules.
  • To demonstrate the effectiveness of 3D-printed c-SE for space-saving EMI shielding in electronics.

Main Methods:

  • Formulation of 3D printable carbon-based inks using graphene and carbon nanotube nanoparticles.
  • 3D printing to create arbitrarily-customized architectures for conformal shielding.
  • Integration of 3D-printed c-SE modules into core electronics as a proof-of-concept.

Main Results:

  • Achieved high EMI shielding performance of up to 61.4 dB.
  • Developed ultralight architectures with a density of 0.076 g cm⁻³.
  • Demonstrated a specific shielding effectiveness of 802.4 dB cm³ g⁻¹.
  • Successfully integrated c-SE modules for electromagnetic compatibility and thermal dissipation.

Conclusions:

  • 3D-printed carbon-based c-SE modules offer a space-saving solution for EMI shielding in integrated electronics.
  • This innovation opens avenues for next-generation high-performance shielding materials with customizable structures.
  • The developed technology addresses the need for advanced electromagnetic compatibility and thermal management solutions.