Vietnamese people publish the international metamaterials that absorb electromagnetic waves

Artificial materials are structured in a special way that can be applied to many manufacturing industries in life and military.

The team of Vietnamese scientists has just published in the international journal Scientific Reports (Springer Nature publisher) about a metamaterial (Metamaterials) that absorbs maximum electromagnetic waves by optimizing how to arrange the cell base in their structure.

Dr. Tran Manh Cuong, a lecturer in the Department of Physics, Hanoi National University of Education, member of the research team said that this is not a common material like aluminum, copper, or lead, but a form of artificial material. made of metal and dielectric, forming a model of electromagnetism materials or electronic materials.

It is distinct because it does not follow the law of ordinary refraction or other electromagnetic effects but has inverse effects.

Laboratory team.(Photo: TC).

With the special properties of this metamaterial it can be used to create micro-integrated antennas, which support high-performance wireless energy transmission, super lenses or full-wave absorbers. from application in life or military field.

This material can also be used to produce sensors with super high sensitivity in medicine, biology or support for solar panels with higher efficiency than normal.

Because of the nature that absorbs most of the electromagnetic energy, it reaches its surface, which can be used to produce military camouflage equipment. When camouflage is needed, it is only necessary to coat the outer metamaterial that will completely absorb the radar wave. Thus, radar location and signal detection for camouflaged devices will not work because the entire detection wave is fully absorbed and there is no reflection.

The field of metamaterials has been concentrated in the world for about 15 years. Research groups are deploying in many different directions and mainly aim at practical applications.

Currently in Vietnam, the research on metamaterials has been of interest to many scientists, but due to technological conditions, it is still difficult to manufacture and measure in high frequency areas. Therefore, the announcement of the research team is important when Vietnam can take the initiative in basic research and meet the practical application of metamaterials.