The Invisible Made Visible: A Look at Trace-Gas Sensing and the Hunt for Hydrogen

  Introduction Breathing in the air around us, we seldom consider the invisible world of molecules drifting unseen—some harmless, others hazardous. Detecting trace gases at minuscule concentrations is not just a scientific pursuit; it is a necessity for ensuring safety, protecting the environment, maintaining industrial efficiency, and enabling the transition to clean energy. Whether it’s…