NDLI: Energy and thermal distribution under the skin during ultrasound power transfer

Content Provider	IEEE Xplore Digital Library
Author	Hi Yuen Song Mingyu Cho Yanghun Lee Inn-yeal Oh Joontaek Jung Hongsoo Choi Chul Soon Park
Copyright Year	2013
Description	Author affiliation: Dept. of Robot. Eng., DGIST, Daegu, South Korea (Joontaek Jung; Hongsoo Choi) \|\| Dept. of Electr. Eng., KAIST, Daejeon, South Korea (Hi Yuen Song; Mingyu Cho; Yanghun Lee; Inn-yeal Oh; Chul Soon Park)
Abstract	Energy distribution under the human skin during ultrasound power transfer using a 15×15 MEMS transducer array with 2.2 MHz driving frequency is presented in this paper. When the surface pressure of the array element is 96 kPa, intensity at 2 mm under the skin is 0.96 $W/cm^{2};$ intensity increases to 24 $W/cm^{2}$ when the surface pressure increases to 0.48 MPa. In other words, the simulation results show that the larger the surface pressure, the larger the intensity. The simulated and the measured power density values at 7 mm in the vertical direction of the transducer surface in degassed water are 96.72 $mW/cm^{2}$ and 94.08 $mW/cm^{2},$ respectively. Temperature change due to ultrasound radiation on the skin is discussed, and the feasibility of ultrasonic power transfer for implantable medical devices specially implanted just underneath the skin is presented.
Sponsorship	IEEE Singapore Sect.
Starting Page	1
Ending Page	3
File Size	866297
Page Count	3
File Format	PDF
ISBN	9781467360968
DOI	10.1109/IMWS-BIO.2013.6756142
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-09
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Power system measurements IMD Transducers Ultrasonic imaging Density measurement Ultrasound power transfer Skin Acoustics Implantable medical devices Ultrasonic power delivery Acoustic waves
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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