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
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 CiteEjecta-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 CiteThermal 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 CiteRecent 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 - 2028Duke KURe Program
Inst. Training Prgm or CMEMentor · Awarded by National Institute of Diabetes and Digestive and Kidney Diseases · 2013 - 2028U2C/TL1 NC KUH TRIO Administrative Core
ResearchPreceptor · Awarded by University of North Carolina - Chapel Hill · 2023 - 2028View All Grants