Development of propulsion methods and systems for moving untethered mm-scale robots in brain and spinal cord:• Designed optimal electromagnetic coils for propelling robots to target locations within brain• Led definition of functional and performance requirements• Designed and conducted ex vivo experiments to establish drive system requirements• Mentored interns and junior engineersDevelopment of a brain cyst cutting device:Actively contributed to DFMEA risk analysis and requirements reviewsDesigned magnetic retrieval tool

Development of untethered micro-robots for drug delivery:• Designed structures and mechanisms for untethered motion and magnetically triggered payload release in brain and spinal column• Conducted ex vivo and in vivo experiments to evaluate proof-of-concept designs in swine and ovine models

Development of world's first 5-axis optical image stabilization system in cell-phone cameras:• Led root cause analysis on yield and reliability issues for MEMS actuator• Led die-level failure analysis using a variety of tools including SEM and finite element analysis• Analyzed performance, reliability and metrology data for design and process optimization• Developed mechanical and optical characterization protocols for MEMS actuator

Development of world's first catheter for all-in-one RF ablation and left atrial mapping:• Designed and executed benchtop experiments with human and animal tissue to inform mechanical design and device sizing• Performed finite element analysis of RF ablation to inform electrode design• Developed and validated in vivo contact sensing technology• Developed analytical methods for atrial electrogram mapping and feature extraction• Performed statistical analysis on clinical and pre-clinical data to inform clinical practice• Mentored junior engineersExperimental and theoretical work to inform design of catheter for mitral valve annuloplasty:• Developed method for quanititave analyis of cardiac anatomy to optimize anchor dimensions• Performed intra-atrial force measurements in swine model• Designed and performed experiments for strength and durability testing of tissue anchors

• Technical lead on MEMS-based autofocus camera module for mobile phones from concept to low-volume prototype manufacturing• Technical lead on grant-funded MEMS-based free space optical switch• R&D in electromagnetic and electrostatic actuators• Developed optomechanical alignment system for free-space optical switch• Developed processes for low-volume MEMS assembly and characterization• Won NASA grant for MEMS-based pressure sensor• Mentored junior engineers and technicians