Journal
SENSORS
Volume 20, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/s20010064
Keywords
micro-vibration; latex membrane; localized distribution of sound; optical Doppler tomography
Funding
- Bio & Medical Technology Development Program of the NRF - Korean government, MSIP [2017M3A9E2065282]
- National Research Foundation of Korea (NRF) - Korea government, MSIT [2018R1A5A1025137]
- BK21 plus project - Ministry of Education, Korea [21A20131600011]
- National Research Foundation of Korea [2018R1A5A1025137] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Non-invasive characterization of micro-vibrations in the tympanic membrane (TM) excited by external sound waves is considered as a promising and essential diagnosis in modern otolaryngology. To verify the possibility of measuring and discriminating the vibrating pattern of TM, here we describe a micro-vibration measurement method of latex membrane resembling the TM. The measurements are obtained with an externally generated audio stimuli of 2.0, 2.2, 2.8, 3.1 and 3.2 kHz, and their respective vibrations based tomographic, volumetric and quantitative evaluations were acquired using optical Doppler tomography (ODT). The micro oscillations and structural changes which occurred due to diverse frequencies are measured with sufficient accuracy using a highly sensitive ODT system implied phase subtraction method. The obtained results demonstrated the capability of measuring and analyzing the complex varying micro-vibration of the membrane according to implied sound frequency.
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