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

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.

Authors:
 [1];  [2];  [1]
  1. Department of Electrical and Computer Engineering, The University of Arizona, Tucson, Arizona 85721 (United States)
  2. Department of Medical Imaging, The University of Arizona, Tucson, Arizona 85724 (United States)
Publication Date:
OSTI Identifier:
22591541
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 14; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRIC CONDUCTIVITY; ENERGY ABSORPTION; EXCITATION; GRAPHENE; LASERS; LAYERS; MICROWAVE RADIATION; PULSES; SIGNALS; SIMULATION; SPECIFIC HEAT; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Wang, Xiong, Department of Medical Imaging, The University of Arizona, Tucson, Arizona 85724, School of Information Science and Technology, ShanghaiTech University, Shanghai 200031, Witte, Russell S., and Xin, Hao. Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations. United States: N. p., 2016. Web. doi:10.1063/1.4945661.
Wang, Xiong, Department of Medical Imaging, The University of Arizona, Tucson, Arizona 85724, School of Information Science and Technology, ShanghaiTech University, Shanghai 200031, Witte, Russell S., & Xin, Hao. Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations. United States. https://doi.org/10.1063/1.4945661
Wang, Xiong, Department of Medical Imaging, The University of Arizona, Tucson, Arizona 85724, School of Information Science and Technology, ShanghaiTech University, Shanghai 200031, Witte, Russell S., and Xin, Hao. 2016. "Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations". United States. https://doi.org/10.1063/1.4945661.
@article{osti_22591541,
title = {Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations},
author = {Wang, Xiong and Department of Medical Imaging, The University of Arizona, Tucson, Arizona 85724 and School of Information Science and Technology, ShanghaiTech University, Shanghai 200031 and Witte, Russell S. and Xin, Hao},
abstractNote = {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.},
doi = {10.1063/1.4945661},
url = {https://www.osti.gov/biblio/22591541}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 14,
volume = 108,
place = {United States},
year = {Mon Apr 04 00:00:00 EDT 2016},
month = {Mon Apr 04 00:00:00 EDT 2016}
}