Renxiang Tang
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Renxiang Tang has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Craig J. Goergen
Weldon School of Biomedical Engineering Purdue University West Lafayette Indiana USA
1 shared publication - Hongjie Jiang
South China University of Technology
1 shared publication - Ian Woodhouse
School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907-2050, United States
1 shared publication - Jessica L. Ma
Weldon School of Biomedical Engineering, Purdue University, 311308 West Lafayette, Indiana United States
1 shared publication - Rahim Rahimi
School of Electrical and Computer Engineering, Purdue University, West Lafayette, USA
1 shared publication - Tahereh Soleimani
MSU/Sparrow Surgery Lansing Michigan USA
1 shared publication
Latest Publications
- 11 August 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 68 (3) , 747-758
A Wireless Implantable Passive Intra-Abdominal Pressure Sensing Scheme via Ultrasonic Imaging of a Microfluidic Device
In this paper, we demonstrate a wireless and passive physiological pressure sensing scheme that utilizes ultrasound imaging of an implantable microfluidic based pressure sensitive transducer. The transducer consists of a sub-mm scale pressure sensitive membrane that covers a reservoir filled with water and is connected to a hydrophobic micro-channel. Applied pressure onto the transducer deflects the membrane and pushes the water from the reservoir into the channel; the water's travelling distance in the channel is a function of the applied pressure, which is quantitatively measured by using a 40 MHz ultrasound imaging system. The sensor presents a linear sensitivity of 42kPa/mm and a spatial resolution of 1.2kPa/30μm in the physiological range of abdominal compartment syndrome. Reliability assessments of the transducer confirm its ability to remain functional after more than 600 cycles of pressure up to 55kPa over the course of 2 days. Ex vivo experimental results verify the practical capability of the technology to effectively measure pressures under a 15 mm thick porcine skin. It is anticipated that this technology can be applied to a broad range of implantable pressure measurement, by simply tuning the thickness of the thin PDMS membrane and the geometry of the reservoir.
- 11 August 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 68 (3) , 747-758
A Wireless Implantable Passive Intra-Abdominal Pressure Sensing Scheme via Ultrasonic Imaging of a Microfluidic Device
In this paper, we demonstrate a wireless and passive physiological pressure sensing scheme that utilizes ultrasound imaging of an implantable microfluidic based pressure sensitive transducer. The transducer consists of a sub-mm scale pressure sensitive membrane that covers a reservoir filled with water and is connected to a hydrophobic micro-channel. Applied pressure onto the transducer deflects the membrane and pushes the water from the reservoir into the channel; the water's travelling distance in the channel is a function of the applied pressure, which is quantitatively measured by using a 40 MHz ultrasound imaging system. The sensor presents a linear sensitivity of 42kPa/mm and a spatial resolution of 1.2kPa/30μm in the physiological range of abdominal compartment syndrome. Reliability assessments of the transducer confirm its ability to remain functional after more than 600 cycles of pressure up to 55kPa over the course of 2 days. Ex vivo experimental results verify the practical capability of the technology to effectively measure pressures under a 15 mm thick porcine skin. It is anticipated that this technology can be applied to a broad range of implantable pressure measurement, by simply tuning the thickness of the thin PDMS membrane and the geometry of the reservoir.