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Pei Zhong

Professor in the Thomas Lord Department of Mechanical Engineering and Materials Science
Thomas Lord Department of Mechanical Engineering and Materials Science
1103 Engineering Annex, Box 90300, Durham, NC 27708-0300
1103 Engineering Annex, Box 90300, Durham, NC 27708

Overview


My research focuses on engineering and technology development with applications in the non-invasive or minimally invasive treatment of kidney stone disease via shock wave and laser lithotripsy, high-intensity focused ultrasound (HIFU) and immunotherapy for cancer treatment, acoustic and optical cavitation, and ultrasound neuromodulation via sonogenetics. 

We are taking an integrated and translational approach that combines fundamental research with engineering and applied technology development to devise novel and enabling ultrasonic, optical, and mechanical tools for a variety of clinical applications. We are interested in shock wave/laser-fluid-bubble-solid interaction, and resultant mechanical and thermal fields that lead to material damage and removal.  We also investigate the stress response of biological cell and tissue induced by cavitation and ultrasound exposure, mediated through mechanosensitive ion channels, such as Piezo 1. Our research activities are primarily supported by NIH and through collaborations with the medical device industry.

Current Duke Appointments & Affiliations


Professor in the Thomas Lord Department of Mechanical Engineering and Materials Science · 2012 - Present Thomas Lord Department of Mechanical Engineering and Materials Science, Pratt School of Engineering
Professor of Biomedical Engineering · 2024 - Present Biomedical Engineering, Pratt School of Engineering

Recent News Items


Published December 8, 2015
Capturing at High Speed the Cellular Impacts of Bubbles and Jets
Published March 19, 2014
New method boon for kidney stone treatment
Published March 18, 2014
New Lens Design Drastically Improves Kidney Stone Treatment

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Recent Scholarly Works


Intra-Crater Bubble Expansion Drives the Fracture of Impacted Ureteral Artificial and Human Calcium Phosphate Stones in Laser Lithotripsy.

Journal article Lasers in surgery and medicine · May 2026 ObjectivesTo investigate the fracture mechanism of impacted ureteral stones during laser lithotripsy (LL).Materials and methodsImpacted 6 × 6 mm cylindrical BegoStone samples embedded in a hydrogel ureter model and a 100% calcium phosphat ... Full text Cite

Ejecta-Modulated Bubble Dynamics Play a Dominant Role in Stone Retropulsion.

Journal article Advanced science (Weinheim, Baden-Wurttemberg, Germany) · April 2026 Cavitation bubbles generated by laser absorption in liquids collapse violently, producing high-speed jets, toroidal bubbles, and shock waves that induce material erosion and object displacement. In laser lithotripsy, this phenomenon causes kidney stone mig ... Full text Cite

Thermal injury and treatment efficiency during thulium fiber laser lithotripsy: insights from an in vivo porcine model.

Journal article World J Urol · January 11, 2026 PURPOSE: To evaluate the risk of thermal injury and the treatment efficiency during thulium fiber laser (TFL) lithotripsy of renal and ureteral stone phantoms in an in vivo porcine model. METHODS: BegoStone phantoms were sequentially implanted and treated ... Full text Link to item Cite
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Recent Grants


Assessment of the Optimal Settings of TFL for Laser Lithotripsy and Associated Thermal Injury Risk

ResearchPrincipal Investigator · Awarded by National Institute of Diabetes and Digestive and Kidney Diseases · 2025 - 2028

Duke KURe Program

Inst. Training Prgm or CMEMentor · Awarded by National Institute of Diabetes and Digestive and Kidney Diseases · 2013 - 2028

U2C/TL1 NC KUH TRIO Administrative Core

ResearchPreceptor · Awarded by University of North Carolina - Chapel Hill · 2023 - 2028

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Education


University of Texas, Arlington · 1992 Ph.D.
University of Texas Southwestern Medical Center, Medical School · 1988 M.Sc.

External Links


Google Scholar