Scientists presents a one-step laser synthesis method for fabricating wideband microwave absorption metamaterial

Phys.org July 13, 2023 Microwave absorption in radar stealth technology is faced with challenges in terms of its effectiveness in low-frequency regions. An international team of researchers (UK, Singapore) has developed a new laser-based method for producing an ultrawideband metamaterial-based microwave absorber with a highly uniform sheet resistance and negative magnetic permeability at resonant frequencies, which results in a wide bandwidth in the L- to S-band. The electrical sheet resistance uniformity was achieved with less than 5% deviation resulting in a microwave absorption coefficient between 97.2% and 97.7% within a 1.56–18.3 GHz bandwidth for incident angles of 0°–40°, and there […]