Phys.org January 9, 2019
An international team of researchers (Singapore, China) constructed the 3-D photonic topological insulator out of a stack of thin plastic sheets embedded with metal antennas acting as tiny electromagnetic resonators. The key breakthrough was made when they realized how to tailor the resonators to interact with electromagnetic waves in a very specific way, granting the waves the desired topological characteristics. The current 3-D photonic topological insulator is limited to electromagnetic waves, at relatively low frequencies. According to the researchers if it can be scaled to optical frequencies there could be applications for creating optical computer chips, lasers, and interesting optical devices…read more. TECHNICAL ARTICLEÂ
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