Mapping the Young’s modulus distribution of the human tympanic membrane by microindentation

Mapping the Young’s modulus distribution of the human tympanic membrane by microindentation

K&C is pleased to present Principal Scientist, Dr. H. Luo’s publication titled: Mapping the Young’s modulus distribution of the human tympanic membrane by microindentation” . This peer-reviewed research paper provides quantitative results to characterize the mechanical properties of the eardrum (the tympanic membrane). The eardrum is a critical part of the ear organ that is vulnerable to injuries, and because of it’s size and complexity, requires special techniques to measure its properties. The publication was published in the Hearing Research Volume 378, July 2019, Pages 75-91

Young’s modulus distribution of TM (TB10-02) at the lateral surface. (a). Original map in normalized x-y coordinates; (b). Smoothed map in normalized polar coordinates.

Young’s modulus distribution of TM (TB10-02) at the lateral surface. (a). Original map in normalized x-y coordinates; (b). Smoothed map in normalized polar coordinates.

 

Some highlights of the publication include:

  • Microindentation was used to measure the out-of-plane Young’s modulus of the entire human TM.
  • The Young’s modulus distribution is reported for the entire TM pars tensa on both lateral and medial sides.
  • The Young’s modulus mapping was accurately modeled by a bivariate Gaussian function in polar coordinates.

 

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