| 초록 |
There have been many sorts of air pollution, which gradually pushes every life and environment to a serious threat. Diverse toxic gases that initiate the air pollution may possibly be spread everywhere. For this reason, wearable gas sensors would be a ultimate device to make a signal of exposure to toxic gases in real time. An important requirement for wearble sensors is high stretchability because they should endure large strains during human motions. Fabric may be an ideal platform for the werable gas sensors, and a main challenge includes how to realize a stretchable gas sensor on the fabric, which can detect multiple toxic gases. In this work, we fabricated highly strain-endurable gas sensors by elaboratively coating diverse nanomaterials such as reduced graphene oxide (rGO) flakes, ZnO nanorods, palladium nanoparticles, and silver nanowires on fabric. Those nanomaterials appeared to play independent roles for responding to different species of gas molecules with improved sensitivity. As a consequence, the sensors could detect multiples gases including NO2, H2, and NH3 at room temperature. Notably, the gas sensors turned out to work normally under large tensile strain and harsh bending strain, demonstrating their potential as a true wearable gas sensor. |
