Triboelectric nanogenerator(TENG)is an innovative energy technology that converts mechanical energy into electrical energy by utilizing the triboelectric effect and the principle of static electric induction.Rotary tr...Triboelectric nanogenerator(TENG)is an innovative energy technology that converts mechanical energy into electrical energy by utilizing the triboelectric effect and the principle of static electric induction.Rotary triboelectric nanogenerator(R-TENG)can collect mechanical energy from the surrounding environment,but its shortcomings such as too large collection device and insufficient wear resistance hinder its further development.In this study,we propose a high-performance press-driven rotation triboelectric nanogenerator(HPR-TENG),which uses a gear acceleration structure to achieve efficient energy conversion by pressing,and significantly improves the output performance and durability of the device through a charge supplement strategy.At the same time,the device size is reduced to the portable range,which is more suitable for the power needs of mobile or miniaturized sensor networks.The experimental results show that the output performance can be improved by decreasing the polar distance and increasing the rotational speed.At 600 rpm,the peak-to-peak output voltage,peak-to-peak output current and charge transfer of HPR-TENG are 3128 V,221μA and 492 nC,respectively.The output remains stable after 800,000 cycles,proving its excellent stability.The output power reaches a maximum of 344 mW at a load of 3×10^(7)ΩHPR-TENG can collect kinetic and mechanical energy generated by a person to provide a stable power supply for cutting-edge high-voltage breakdown sensor systems,enabling simple and efficient inert gas or ultraviolet sensors.The proposed self-powered ultraviolet(UV)sensor,with its simple,low-cost design,has broad industrial and Internet of Things(IoT)applications,such as powering wearable health monitors,industrial condition sensors,and smart agriculture systems.展开更多
Surface acoustic wave （SAW） resonators are a type of ultraviolet （UV） light sensors with high sensitivity, and they have been extensively studied. Transparent SAW devices are very useful and can be developed into ...Surface acoustic wave （SAW） resonators are a type of ultraviolet （UV） light sensors with high sensitivity, and they have been extensively studied. Transparent SAW devices are very useful and can be developed into various sensors and microfluidics for sensing/monitoring and lab-on-chip applications. We report the fabrication of high sensitivity SAW UV sensors based on piezoelectric （PE） ZnO thin films deposited on glass substrates. The sensors were fabricated and their performances against the post-deposition annealing condition were investigated. It was found that the UV-light sensitivity is improved by more than one order of magnitude after annealing. The frequency response increases significantly and the response becomes much faster. The optimized devices also show a small temperature coefficient of frequency and excellent repeatability and stability, demonstrating its potential for UV-light sensing application.展开更多
A novel Cu(I) complex with the formula of [Cu(DPEphos)(Dicnq)]BF4(CuDD) was synthesized and characterized by X-ray single crystal diffraction method,in which DPEphos and Dicnq denote bis[2-(diphenylphosphino)phenyl]et...A novel Cu(I) complex with the formula of [Cu(DPEphos)(Dicnq)]BF4(CuDD) was synthesized and characterized by X-ray single crystal diffraction method,in which DPEphos and Dicnq denote bis[2-(diphenylphosphino)phenyl]ether and 6,7-Dicyanodipyrido[2,2-d:2 ,3 -f] quinoxaline,respectively.Organic ultraviolet optical sensor based on photovoltaic diode is fabricated by using CuDD as an electron acceptor and 4,4′,4″-tris-(2-methylphenyl phenylamino) triphenylamine(m-MTDATA) as an electron donor.The sensor is sensit...展开更多
The NO2 gas sensing behavior of porous silicon（PS） is studied at room temperature with and without ultraviolet（UV） light radiation.The PS layer is fabricated by electrochemical etching in an HF-based solution on a...The NO2 gas sensing behavior of porous silicon（PS） is studied at room temperature with and without ultraviolet（UV） light radiation.The PS layer is fabricated by electrochemical etching in an HF-based solution on a p ＋-type silicon substrate.Then,Pt electrodes are deposited on the surface of the PS to obtain the PS gas sensor.The NO2 sensing properties of the PS with different porosities are investigated under UV light radiation at room temperature.The measurement results show that the PS gas sensor has a much higher response sensitivity and faster response-recovery characteristics than NO2 under the illumination.The sensitivity of the PS sample with the largest porosity to 1 ppm NO2 is 9.9 with UV light radiation,while it is 2.4 without UV light radiation.We find that the ability to absorb UV light is enhanced with the increase in porosity.The PS sample with the highest porosity has a larger change than the other samples.Therefore,the effect of UV radiation on the NO2 sensing properties of PS is closely related to the porosity.展开更多
Ultraviolet （UV） fire detector is used to detect fire according to the ultraviolet radiation of the flame. High detecting sensitivity of the sensor requires high ultraviolet transmission property of the detecting wi...Ultraviolet （UV） fire detector is used to detect fire according to the ultraviolet radiation of the flame. High detecting sensitivity of the sensor requires high ultraviolet transmission property of the detecting window. In this paper, high performance JGS-1 （type name of glass） ultraviolet quartz glass is used as the sensor detecting window material and the ultraviolet transmission characteristics of the glass is studied. A new method with the smart fire detecting module to test the ultraviolet transmission parameter of quartz glass is demonstrated. The comparison results of UV spectrometer and this new method manifest that JGS-1 quartz glass has good ultraviolet transmission character and the new test method with fire detecting module is direct and feasible.展开更多
基金the National Natural Science Foundation of China(No.62405294).
文摘Triboelectric nanogenerator(TENG)is an innovative energy technology that converts mechanical energy into electrical energy by utilizing the triboelectric effect and the principle of static electric induction.Rotary triboelectric nanogenerator(R-TENG)can collect mechanical energy from the surrounding environment,but its shortcomings such as too large collection device and insufficient wear resistance hinder its further development.In this study,we propose a high-performance press-driven rotation triboelectric nanogenerator(HPR-TENG),which uses a gear acceleration structure to achieve efficient energy conversion by pressing,and significantly improves the output performance and durability of the device through a charge supplement strategy.At the same time,the device size is reduced to the portable range,which is more suitable for the power needs of mobile or miniaturized sensor networks.The experimental results show that the output performance can be improved by decreasing the polar distance and increasing the rotational speed.At 600 rpm,the peak-to-peak output voltage,peak-to-peak output current and charge transfer of HPR-TENG are 3128 V,221μA and 492 nC,respectively.The output remains stable after 800,000 cycles,proving its excellent stability.The output power reaches a maximum of 344 mW at a load of 3×10^(7)ΩHPR-TENG can collect kinetic and mechanical energy generated by a person to provide a stable power supply for cutting-edge high-voltage breakdown sensor systems,enabling simple and efficient inert gas or ultraviolet sensors.The proposed self-powered ultraviolet(UV)sensor,with its simple,low-cost design,has broad industrial and Internet of Things(IoT)applications,such as powering wearable health monitors,industrial condition sensors,and smart agriculture systems.
基金supported by the National Natural Science Foundation of China(Grant Nos.61274037 and 61301046)the Research Fund for the Doctoral Program of Higher Education of China(Grant Nos.20120101110031 and 20120101110054)
文摘Surface acoustic wave （SAW） resonators are a type of ultraviolet （UV） light sensors with high sensitivity, and they have been extensively studied. Transparent SAW devices are very useful and can be developed into various sensors and microfluidics for sensing/monitoring and lab-on-chip applications. We report the fabrication of high sensitivity SAW UV sensors based on piezoelectric （PE） ZnO thin films deposited on glass substrates. The sensors were fabricated and their performances against the post-deposition annealing condition were investigated. It was found that the UV-light sensitivity is improved by more than one order of magnitude after annealing. The frequency response increases significantly and the response becomes much faster. The optimized devices also show a small temperature coefficient of frequency and excellent repeatability and stability, demonstrating its potential for UV-light sensing application.
基金supported by the Natural Science Foundationof Jilin Province (No.20060516)the Doctoral Foundation of JilinNormal University (No.2006006 and No.2007009)the Subject and Base Construction Foundation of Jilin Normal University (No.2006041)
文摘A novel Cu(I) complex with the formula of [Cu(DPEphos)(Dicnq)]BF4(CuDD) was synthesized and characterized by X-ray single crystal diffraction method,in which DPEphos and Dicnq denote bis[2-(diphenylphosphino)phenyl]ether and 6,7-Dicyanodipyrido[2,2-d:2 ,3 -f] quinoxaline,respectively.Organic ultraviolet optical sensor based on photovoltaic diode is fabricated by using CuDD as an electron acceptor and 4,4′,4″-tris-(2-methylphenyl phenylamino) triphenylamine(m-MTDATA) as an electron donor.The sensor is sensit...
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 60771019 and 60801018)the Tianjin Key Research Program of Application Foundation and Advanced Technology,China (Grant No. 11JCZDJC15300)
文摘The NO2 gas sensing behavior of porous silicon（PS） is studied at room temperature with and without ultraviolet（UV） light radiation.The PS layer is fabricated by electrochemical etching in an HF-based solution on a p ＋-type silicon substrate.Then,Pt electrodes are deposited on the surface of the PS to obtain the PS gas sensor.The NO2 sensing properties of the PS with different porosities are investigated under UV light radiation at room temperature.The measurement results show that the PS gas sensor has a much higher response sensitivity and faster response-recovery characteristics than NO2 under the illumination.The sensitivity of the PS sample with the largest porosity to 1 ppm NO2 is 9.9 with UV light radiation,while it is 2.4 without UV light radiation.We find that the ability to absorb UV light is enhanced with the increase in porosity.The PS sample with the highest porosity has a larger change than the other samples.Therefore,the effect of UV radiation on the NO2 sensing properties of PS is closely related to the porosity.
基金Supported by the National Nature Science Foundation of China (No. 60572007) and the Ministry of Education Program of China (No.20040614004)
文摘Ultraviolet （UV） fire detector is used to detect fire according to the ultraviolet radiation of the flame. High detecting sensitivity of the sensor requires high ultraviolet transmission property of the detecting window. In this paper, high performance JGS-1 （type name of glass） ultraviolet quartz glass is used as the sensor detecting window material and the ultraviolet transmission characteristics of the glass is studied. A new method with the smart fire detecting module to test the ultraviolet transmission parameter of quartz glass is demonstrated. The comparison results of UV spectrometer and this new method manifest that JGS-1 quartz glass has good ultraviolet transmission character and the new test method with fire detecting module is direct and feasible.
