Polymer-based cardiovascular shear stress sensors

Hongyu Yu, Lisong Ai, Mahsa Rouhanizadeh, Ryan Hamilton, Juliana Hwang, Ellis Meng, Eun Sok Kim, Tzung K. Hsiai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


This paper describes a polymer-based cardiovascular shear stress sensor built on catheter for atherosis diagnosis. This flexible sensor detects small temperature perturbation as fluid past the sensing elements leading to changes in the resistance, from which shear stress is inferred. MicroElectroMechanical System (MEMS) surface manufacture technology is utilized for fabrication of the devices with biocompatible materials, such as parylene C, Titanium (Ti) and Platinum (Pt). The temperature coefficient of resistance (TCR) of the sensor is 0.11%°C. When a catheter-based sensor is positioned near the wall of the rabbit aorta, our 3-D computational fluid dynamic model demonstrates that flow disturbance is negligible under steady state in a straight segment. The sensor has been packaged with a catheter and will be deployed into the aorta of NZW rabbits for realtime shear stress measurement

Original languageEnglish (US)
Title of host publicationProceedings of the 2nd Frontiers in Biomedical Devices Conference 2007
Number of pages2
StatePublished - 2007
Externally publishedYes
Event2nd Frontiers in Biomedical Devices Conference 2007 - Irvine, CA, United States
Duration: Jun 7 2007Jun 8 2007

Publication series

NameProceedings of the 2nd Frontiers in Biomedical Devices Conference 2007


Other2nd Frontiers in Biomedical Devices Conference 2007
Country/TerritoryUnited States
CityIrvine, CA

ASJC Scopus subject areas

  • Biomedical Engineering


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