Imagine walking into your kitchen and instantly knowing if the fish you bought yesterday is still fresh—or entering an industrial site with sensors that immediately alert you to hazardous gas leaks.

While fuel cells generate clean energy, fuel cell sensors generate precise measurements and are a gold standard for breath alcohol analysis.

For many industries, nitrogen (N₂) plays an unnoticed but vital role in inerting reactors, storing food safely, and protecting the sterility of pharmaceuticals. But what makes it dangerous is that ...