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.
