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In this paper, the tri‐functional flexible device by using ZnS powder as phosphor layer and flexible piezoelectric polymer as dielectric layer is demonstrated. The fabricated device generates the electroluminescent (EL) light from the phosphor and the sound from the piezoelectric sheet under a supply of external electric power, and additionally harvests the mechanical energy harvesting to be converted...
An innovative sound transmission system which transmits sound wirelessly to ears without making any other noise outside is suggested. The system utilizes the human body as a sound transmission medium. The human body is a nonlinear medium and the nonlinear characteristic is the basis of the theorem for the system. When two ultrasonic waves with different frequencies are transmitted into the body, the...
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