Invisible Shield against Electromagnetic Interference designed

  • IASbaba
  • August 20, 2020
  • 0
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Invisible Shield against Electromagnetic Interference designed

Part of: GS-Prelims and GS-III – scientific innovations and discoveries

In News:

  • Recently, scientists from the Centre for Nano and Soft Matter Sciences (CeNS), Bengaluru, have designed a metal mesh structure to construct an invisible shield against Electromagnetic Interference (EMI).

Key takeaways 

  • Metal Mesh Structure:
    • A copper metal mesh is developed on polyethylene terephthalate (PET) sheet which exhibits a visible transmittance of about 85%.
    • Transmittance describes how much light passes through a sample.
    • Metal mesh provides better electromagnetic shielding compared to the same thickness of continuous metal film where transparency can be compromised.
  • Benefits:
    • It will isolate a device’s energy so it doesn’t affect anything else and blocks external energy from getting in.
    • This ‘invisible’ shield can be used in various military stealth applications.
    • It can cover electromagnetic wave emitter or absorber devices without compromising aesthetics.
    • It is an important element for enhancing the stealth capability of a weapon platform

Important value additions 

Electromagnetic Interference

  • It is an electromagnetic emission that causes a disturbance in another piece of electrical equipment.
  • Any device that has an electronic circuit can be susceptible to EMI.
  • It compromises the performance of electrical equipment by obstructing and degrading data, sometimes even losing data completely.
  • EMI can be attributed to a wide span of the electromagnetic spectrum including radio and microwave frequencies.

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