Penn State’s Tiny Robots Are Built to Save Lives

What if a soft robot could crawl through earthquake rubble or travel inside your body to deliver medicine?

Researchers at Penn State University, led by Dr. Huanyu 'Larry' Cheng, have created a flexible, magnetically controlled robot that could do just that. Working with collaborators including Dr. Suk-Won Hwang of Korea University, the team integrated soft robotics with flexible electronics, solving major challenges in movement, sensing, and electromagnetic interference.

These robots move without wires or batteries, using embedded magnetic materials and external fields. Their integrated sensors allow them to detect heat, pressure, and even pH changes, making them ideal for search-and-rescue missions or non-invasive medical treatments.

Dr. Cheng’s team is already working on a “robot pill” for gastrointestinal diagnostics, and they envision future applications inside blood vessels to treat cardiovascular conditions.

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