# Microscopic cracks turn flexible coatings into electrically activated bacteria killers

Source: [Nanowerk Nanotechnology and Emerging Technologies News](https://www.nanowerk.com/nanotechnology-news3/newsid=70591.php?utm_source=rss&utm_medium=rss) · 2026-11-12 · Physics
Page: https://themorning.science/story/microscopic-cracks-turn-flexible-coatings-into-electrically-activated-bacteria-k-372cd6d81f347460
Kind: research · Impact: medium

## In brief

- Tiny cracks in gallium-carbon nanotube coatings create electrical hotspots.
- After a brief 9-volt pulse, the coatings kill over 80% of bacteria.
- The flexible coatings are proposed as a basis for smart wound dressings.

## Why it matters

It shows that a flexible coating can be made to kill bacteria on demand with a low-voltage pulse rather than relying only on chemical agents, which may matter for future wound-care materials.

## Coverage

- [Microscopic cracks turn flexible coatings into electrically activated bacteria killers](https://www.nanowerk.com/nanotechnology-news3/newsid=70591.php?utm_source=rss&utm_medium=rss) — Nanowerk Nanotechnology and Emerging Technologies News, 2026-11-12

Tags: antibacterial coatings, carbon nanotubes, gallium, wound dressings, nanotechnology

---

Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science