Projects

https://angelachoi.ghost.io

Microrobotics

Researcher — Microrobotics / Experimental Systems

Miskin Lab, University of Pennsylvania — 2024-2025

  • Built and instrumented microscale robotic systems (10–100 μm) with magnetic actuation, operating in non-classical regimes where surface forces dominate behavior.
  • Designed custom imaging + control infrastructure including 3-axis Helmholtz coils and backlit microscopy for controlled experiments under high-noise conditions.
  • Developed an existence → characterization workflow, rapidly proving mechanisms first and then quantifying dynamics, thermal bounds, and failure modes.

S.Startup (AI, Sales, Forward Deployed Engineering)

Co-Founder — AI Categorization for Unstructured Field Data - 2025

  • Conducted 260+ hours of field interviews to map operational workflows and identify bottlenecks in data capture → structured system integration
  • Built and iterated on LLM-assisted pipelines for archaeology and retail, exposing limits of AI in ambiguous environments (hallucination, reliability)
  • Owned deployment + operator interface, validating system behavior through direct user interaction and monitoring, iterating under real-world conditions
  • Drove early sales + adoption by tailoring demos to user context, increasing conversion via simulation-first sales

Bionic Arm

Mechanical Systems Engineer (Robotics / Hardware)

University of Pennsylvania — 2024

  • Engineered a single-actuator robotic gripper via four-bar linkage synthesis, replacing a ~12-motor architecture with mechanically coupled motion to reduce weight, cost, and system complexity.
  • Prototyped under a strict cost constraint, enabling high-frequency physical iteration
  • Re-designed the actuation system around a linear actuator, simplifying fabrication to fully planar processes while improving robustness and packaging efficiency.

Copy-pasteable blurb:

I’m a Physics + PPE student at the University of Pennsylvania seeking robotics engineering/research roles for Summer 2026. I’ve worked on microscale robotic systems (magnetic actuation, custom imaging, Helmholtz coils) , and worked with hundreds of users in forward-deployed engineering. I like owning problems end-to-end, and I’m looking to contribute to research and teams building deployed robotic systems.

Resume/CV

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