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Title: A novel thermal acoustic device based on porous graphene

A thermal acoustic (TA) device was fabricated by laser scribing technology. Polyimide (PI) can be converted into patterned porous graphene (PG) by laser’s irradiation in one step. The sound pressure level (SPL) of such TA device is related to laser power. The theoretical model of TA effect was established to analyze the relationship between the SPL and laser power. The theoretical results are in good agreement with experiment results. It was found that PG has a flat frequency response in the range of 5-20 kHz. This novel TA device has the advantages of one-step procedure, high flexibility, no mechanical vibration, low cost and so on. It can open wide applications in speakers, multimedia, medical, earphones, consumer electronics and many other aspects.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [3]
  1. Institute of Microelectronics, Tsinghua University, Beijing 10084 (China)
  2. (TNList), Tsinghua University, Beijing 100084 (China)
  3. Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089 (United States)
Publication Date:
OSTI Identifier:
22492397
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FLEXIBILITY; GRAPHENE; IMIDES; IRRADIATION; KHZ RANGE; LASER RADIATION; ORGANIC POLYMERS; POROUS MATERIALS; SOUND WAVES