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    Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations

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    Author
    Wang, Xiong
    Witte, Russell S.
    Xin, Hao
    Affiliation
    Univ Arizona, Dept Elect & Comp Engn
    Univ Arizona, Dept Med Imaging
    Issue Date
    2016-04-04
    Keywords
    BREAST-CANCER DETECTION
    CARBON NANOTUBE
    IN-VIVO
    TOMOGRAPHY
    FEASIBILITY
    GENERATION
    DEVICES
    FILMS
    
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    Show full item record
    Publisher
    AMER INST PHYSICS
    Citation
    Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations 2016, 108 (14):143104 Applied Physics Letters
    Journal
    Applied Physics Letters
    Rights
    © 2016 AIP Publishing LLC
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We characterized the thermoacoustic and photoacoustic properties of large-area, few-layer graphene by pulsed microwave and optical excitations. Due to its high electric conductivity and low heat capacity per unit area, graphene lends itself to excellent microwave and optical energy absorption and acoustic signal emanation due to the thermoacoustic effect. When exposed to pulsed microwave or optical radiation, distinct thermoacoustic and photoacoustic signals generated by the few-layer graphene are obtained due to microwave and laser absorption of the graphene, respectively. Clear thermoacoustic and photoacoustic images of large-area graphene sample are achieved. A numerical model is developed and the simulated results are in good accordance with the measured ones. This characterization work may find applications in ultrasound generator and detectors for microwave and optical radiation. It may also become an alternative characterization approach for graphene and other types of two-dimensional materials. (C) 2016 AIP Publishing LLC.
    Note
    Published online 6 April 2016. 12 month embargo.
    ISSN
    0003-6951
    1077-3118
    DOI
    10.1063/1.4945661
    Version
    Final published version
    Additional Links
    http://scitation.aip.org/content/aip/journal/apl/108/14/10.1063/1.4945661
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.4945661
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