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Collaborating physicists from two Russian universities have successfully converted light energy into surface waves on graphene at nearly 90% efficiency. A so-called laser-like energy conversion process with collective resonances, and semiconductor quantum dots acting as intermediary converters are central to the plasmonics demonstration.
Intermediary signal converters — nano-objects of varying chemical compositions and physical geometries — are used to heighten the efficiency (otherwise in the range of approximately 10%) of processes that convert light to surface plasmon-polaritons (SPPs) on 2D surfaces. The quantum dots in the research, which was led by scientists from Moscow Institute of Physics and Technology (MIPT)…READ MORE