A breakthrough in hydrogen sensing technology has been achieved by scientists at The University of Manchester, UK. Hydrogen, a key player in the transition to cleaner energy, has so far posed challenges due to its clear, odourless, and highly flammable nature. The new sensor developed is small, affordable, and energy-efficient, offering superior performance compared to existing commercial detectors. Operating based on a process called "p-doping," the sensor reacts rapidly to the presence of hydrogen, making it highly reliable. Tested in real-world scenarios, including leak detection and diffusion monitoring, the sensor demonstrated its speed and accuracy. Its potential applications in homes, industries, and transport networks are vast, with the added benefit of being ultra-thin and flexible. The team is now focused on further advancing the sensor's capabilities and ensuring its long-term stability in different sensing environments. This innovation marks a significant step towards enhancing hydrogen safety and efficiency in the global transition to clean energy.