Overview
- Researchers published a laboratory proof‑of‑concept in Microsystems & Nanoengineering that was reported by multiple outlets on Nov. 4, 2026, showing bacteria can be used to explore combinatorial solution spaces in parallel.
- The device encodes a decision problem as a network of tiny microfluidic channels and junctions so each route through the chip represents a candidate solution.
- Living bacteria traverse the channels and divide as they move, creating many parallel biological ‘processors’, while high‑resolution imaging and automated analysis trace which paths meet the problem’s constraints.
- The team uses temperature control to slow growth and avoid channel blockage, but the study notes remaining questions about scalability, per‑processor speed, error rates at junctions, biosafety rules, and real‑world performance.
- The 20‑year, cross‑institutional effort is funded by agencies including DARPA, NSERC and the EU, and the authors position the method as a resource‑efficient research tool with possible future uses in cryptography, molecular folding and AI optimization.