Blocking the buzz: MXene composite could eliminate electromagnetic interference by absorbing it...

[Jan Panteltje]

Blocking the buzz: MXene composite could eliminate electromagnetic interference by absorbing it
https://www.sciencedaily.com/releases/2022/10/221019111352.htm

 

[Anthony William Sloman]

On Thursday, October 20, 2022 at 4:21:54 PM UTC+11, Jan Panteltje wrote:

Blocking the buzz: MXene composite could eliminate electromagnetic interference by absorbing it
https://www.sciencedaily.com/releases/2022/10/221019111352.htm

It\'s half-baked nonsense. It talks about absorbing electromagnetic waves, but doesn\'t say anything specific about the proportion absorbed per unit depth of the absorbing layer. The closest it gets to a unit of thickness is \"thinner than a human hair\"

\"A thin coating of the vanadium-based MXene material -- less than the width of a human hair -- could render a material impermeable to any electromagnetic waves in the X-band spectrum, which includes microwave radiation and is the most common frequency produced by devices.\"

The average thickness of a human hair is 70 micron, but it varies by +/-20 micro from person to person.

The X-band is equally loosely specified \" In radar engineering, the frequency range is specified by the Institute of Electrical and Electronics Engineers (IEEE) as 8.0–12.0 GHz. The X band is used for radar, satellite communication, and wireless computer networks.\"

You\'d need remarkably fast logic to get edge speeds with an appreciable 10GHz component.

\"Consumer microwave ovens work around a nominal 2.45 gigahertz (GHz)—a wavelength of 12.2 centimetres (4.80 in) in the 2.4 GHz to 2.5 GHz ISM band—while large industrial/commercial ovens often use 915 megahertz (MHz)—32.8 centimetres (12.9 in)\" which is below the X-band.

--
Bill Sloman, Sydney