electromagnetic radiation tagged posts

As electronic devices saturate all corners of public and personal life, engineers are scrambling to find lightweight, mechanically stable, flexible, and easily manufactured materials that can shield humans from excessive electromagnetic radiation as well as prevent electronic devices from interfering with each other.

In a breakthrough report published in Advanced Materials—the top journal in the field— engineers at the University of California, Riverside describe a flexible film using a quasi-one-dimensional nanomaterial filler that combines excellent electromagnetic shielding with ease of manufacture.

“These novel films are promising for high-frequency communication technologies, which...

Protection against electromagnetic interference

Researchers have succeeded in applying aerogels to microelectronics: Aerogels based on cellulose nanofibers can effectively shield electromagnetic radiation over a wide frequency range – and they are unrivaled in terms of weight.

Electric motors and electronic devices generate electromagnetic fields that sometimes have to be shielded in order not to affect neighboring electronic components or the transmission of signals. High-frequency electromagnetic fields can only be shielded with conductive shells that are closed on all sides...

Visualization of dark matter as energy confined within non-radiating anapoles. Credit: Andrey Miroshnichenko

Akin to throwing a pebble into a pond with no splash, this theory could have many apps from explaining dark matter to combating energy losses in future technologies. It appears to contradict a fundamental tenet of electrodynamics, that accelerated charges create electromagnetic radiation, said Dr Miroshnichenko, ANU. “This problem has puzzled many people. It took us a year to get this concept clear in our heads.”

The fundamental new theory could be used in quantum computers, lead to new laser technology and may even hold the key to understanding how matter itself hangs together...