Please use this identifier to cite or link to this item:
Title: Damage characteristics of elastic material through a thin membrane using high-intensity focused ultrasound (HIFU)
Authors: Liu, N.N
Cui, Y.D 
Khoo, B.C 
Zhang, A.M
Keywords: Elasticity
Ultrasonic applications
Acoustic pressures
Distribution of temperature
Elastic materials
High intensity focused ultrasound
Medical treatment
Noninvasive technique
Polydimethylsiloxane PDMS
Ultrasound sources
Issue Date: 2018
Citation: Liu, N.N, Cui, Y.D, Khoo, B.C, Zhang, A.M (2018). Damage characteristics of elastic material through a thin membrane using high-intensity focused ultrasound (HIFU). AIP Advances 8 (11) : 115123. ScholarBank@NUS Repository.
Abstract: High-intensity focused ultrasound (HIFU) is a non-invasive technique and widely used in medical and dental treatment for reaching and affecting deep seated tissues within the body, such as the removal of fat tissues under the skin, destruction of malignant tumour cells or target volume for the purpose of tissue debulking. This study aims to explore the damage characteristics of elastic material (regarded as soft tissue) by HIFU separated by a thin membrane all immersed in a water medium, in which the latter is used to mimic the human skin in medical treatments. Measurements of acoustic pressure along the vertical central line of HIFU transducer with and without this membrane were conducted and effects of membrane on the focal region were investigated. Results showed that the existence of the membrane serves primarily to reflect partial energy of incident ultrasound wave, and has no effect on phases of wave propagating in water. Next, Polydimethylsiloxane (PDMS) was selected as the elastic material for the experiments. The process of PDMS damage through the membrane by HIFU were recorded and the distribution of temperature around and within the 'destroyed' PDMS block was captured by an infrared camera. The very high temperature measured within the PDMS leading to the formations of cavity and crack within the PDMS block, can be attributed to the accumulation of the energy from the ultrasound source. Finally, the effects of PDMS with different elasticity on their damage characteristics are discussed. © 2018 Author(s).
Source Title: AIP Advances
ISSN: 2158-3226
DOI: 10.1063/1.5050432
Appears in Collections:Elements
Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1063_1_5050432.pdf8.88 MBAdobe PDF




checked on Nov 25, 2021

Page view(s)

checked on Nov 18, 2021

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.