Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3617462
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Funding
- National Natural Science Foundation of China [61025021, 60936002, 60729308, 51072089, 61011130296, 61020106006]
- National Key Project of Science and Technology [2009ZX02023-001-3]
- National 863 Project [2006AA04Z372]
- Ministry of Science and Technology of China [2008DFA12000]
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Thermoacoustic effects were observed in 100-nm indium tin oxide (ITO) films. The sound emission from the ITO films was measured as a function of power, distance, and frequency. Significant flat and wide frequency responses occurred between 20 and 50 kHz. The sound pressure and efficiency were in good agreement with theoretical results. This indicates that a thermoacoustic effect exists in metal-oxide materials and that a large family of transparent electrode materials may exhibit similar properties. Using the ultrathin, transparent, and flexible characteristics, we showed promising applications of ITO sound source devices that were integrated with liquid crystal display screens. (C) 2011 American Institute of Physics. [doi:10.1063/1.3617462]
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