Traditional metal oxide semiconductor(MOS)gas sensors have limited applications in wearable devices owing to their inflexibility and high-power consumption by substantial heat loss.To overcome these limitations,we pre...Traditional metal oxide semiconductor(MOS)gas sensors have limited applications in wearable devices owing to their inflexibility and high-power consumption by substantial heat loss.To overcome these limitations,we prepared doped Si/SiO_(2)flexible fibers by a thermal drawing method as substrates to fabricate MOS gas sensors.A methane(CH_(4))gas sensor was demonstrated by subsequently in situ synthesizing Co-doped ZnO nanorods on the fiber surface.The doped Si core acted as the heating source through Joule heating,which conducted heat to the sensing material with reduced heat loss;the SiO_(2)cladding was an insulating substrate.The gas sensor was integrated into a miner cloth as a wearable device,and the concentration change of CH_(4)was monitored in real time through different colored lightemitting diodes.Our study demonstrated the feasibility of using doped Si/SiO_(2)fibers as the substrates to fabricate wearable MOS gas sensors,where the sensors have substantial advantages over tradition sensors in flexibility,heat utilization,etc.展开更多
基金This work was supported by the Key Research and Development Program of Shanxi Province(202102030201002)the Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(IRT_17R70)+2 种基金the State Key Program of National Natural Science of China(11434007)the 111 Project(D18001)the Fund for Shanxi“1331 Project”Key Subjects Construction.
文摘Traditional metal oxide semiconductor(MOS)gas sensors have limited applications in wearable devices owing to their inflexibility and high-power consumption by substantial heat loss.To overcome these limitations,we prepared doped Si/SiO_(2)flexible fibers by a thermal drawing method as substrates to fabricate MOS gas sensors.A methane(CH_(4))gas sensor was demonstrated by subsequently in situ synthesizing Co-doped ZnO nanorods on the fiber surface.The doped Si core acted as the heating source through Joule heating,which conducted heat to the sensing material with reduced heat loss;the SiO_(2)cladding was an insulating substrate.The gas sensor was integrated into a miner cloth as a wearable device,and the concentration change of CH_(4)was monitored in real time through different colored lightemitting diodes.Our study demonstrated the feasibility of using doped Si/SiO_(2)fibers as the substrates to fabricate wearable MOS gas sensors,where the sensors have substantial advantages over tradition sensors in flexibility,heat utilization,etc.
