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  • 专利标题:   System for transmitting and receiving ultrasonic sound has receiver with graphene membrane having single layer or multiple layers of two-dimensional material and receiver that receives sound waves in ultrasonic frequency range.
  • 专利号:   WO2016148860-A1, CA2979807-A1, AU2016233861-A1, IN201747036207-A, KR2017128535-A, CN107532938-A, EP3271693-A1, US2018066980-A1, JP2018514980-W, HK1248801-A0, EP3271693-A4
  • 发明人:   ZHOU Q, ZETTI A K, ZETTL A K
  • 专利权人:   UNIV CALIFORNIA, UNIV CALIFORNIA
  • 国际专利分类:   G01H011/06, G01H017/00, G01H005/00, H04R007/04, H04R019/00, G01S015/10, G08B001/08, G01H000/00, H04R000/00, G01H003/12
  • 专利详细信息:   WO2016148860-A1 22 Sep 2016 G01H-005/00 201663 Pages: 41 English
  • 申请详细信息:   WO2016148860-A1 WOUS019373 24 Feb 2016
  • 优先权号:   US133804P, US143565P, WOUS019373, CA2979807, US15558467

▎ 摘　　要

NOVELTY - The system has a transmitter, and a receiver containing a graphene membrane (155). The membrane has a single layer or multiple layers of a two-dimensional material. The receiver is operable to receive sound waves in an ultrasonic frequency range of about 20 kilohertz to 10 gigahertz. USE - System for transmitting and receiving ultrasonic sound. ADVANTAGE - Obtains improved low-frequency response by attaching acoustic cavity to one side of graphene microphone electrodes. The differential measurement method eliminates the responses of the loudspeaker, coupling, and driving/amplification circuits. The sub-millimeter accuracy is easily achieved with the simple electroacoustic frequency sweep configuration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of transmitting and receiving ultrasonic sound. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional schematic diagram of a graphene electrostatic wideband receiver i.e. graphene microphone. Graphene microphone (150) Graphene membrane (155) Electrode (160) Spacer (170) Acoustic cavity (185)