This paper proposed a flexible pressure sensor based on poly(dimethylsiloxane) nanostructures film and report an efficient,simple,and low-cost fabrication strategy via soft nanoimprint lithography.The pressure sensor ...This paper proposed a flexible pressure sensor based on poly(dimethylsiloxane) nanostructures film and report an efficient,simple,and low-cost fabrication strategy via soft nanoimprint lithography.The pressure sensor can convert external pressure or mechanical deformation into electrical signal to detect pressure and strain changes based on the coupling of triboelectrification and electrostatic induction.To enhance the performance of the pressure sensor,it consists of sub-500 nm resolution on the surface of elastic poly(dimethylsiloxane) sensitive layer and an indium tin oxide electrode thin film.When the pressure applied on the nanostructures layer,triboelectrostatic charges are induced.In the experiment,it measures up to sensitivity of 0.8 V/kPa at frequency of 5 Hz.This study results in potential applications such as wearable smart devices and skin-attachable diagnostics sensing systems.展开更多
Submicrometer-scale ZnO composite aggregate arrays of nanorods and nanoparticles were prepared by simple wet-chemical route and studied as dye-sensitized solar cells （DSSCs） photoanodes. The ZnO composite aggregate ...Submicrometer-scale ZnO composite aggregate arrays of nanorods and nanoparticles were prepared by simple wet-chemical route and studied as dye-sensitized solar cells （DSSCs） photoanodes. The ZnO composite aggregate arrays significantly improved the efficiency of DSSCs due to their relatively high surface area, fast electron transport, and enhanced light-scattering capability. A short current density （Jsc） of 11.7 mA/cm2 and an overall solar-to-electric energy conversion efficiency （η） of 3.17% were achieved for the ZnO composite aggregate DSSCs, which were much higher than those obtained for the monodisperse aggregate DSSCs （Jsc = 6.9 mA/cm2, r/= 1.51 %） and ZnO nanorod array DSSCs （Jsc = 4.2 mA/cm2, η= 0.61%）.展开更多
基金supported by the National Natural Science Foundation of China (NSFC)(Grant number 51703227,C0025053,61605211,61504147,and 61775213)Sichuan Science and Technology Program (Grant number 2019YJ0014)the Instrument Development of Chinese Academy of Sciences,The National R&D Program of China (Grant number 2017YFC0804900),.
文摘This paper proposed a flexible pressure sensor based on poly(dimethylsiloxane) nanostructures film and report an efficient,simple,and low-cost fabrication strategy via soft nanoimprint lithography.The pressure sensor can convert external pressure or mechanical deformation into electrical signal to detect pressure and strain changes based on the coupling of triboelectrification and electrostatic induction.To enhance the performance of the pressure sensor,it consists of sub-500 nm resolution on the surface of elastic poly(dimethylsiloxane) sensitive layer and an indium tin oxide electrode thin film.When the pressure applied on the nanostructures layer,triboelectrostatic charges are induced.In the experiment,it measures up to sensitivity of 0.8 V/kPa at frequency of 5 Hz.This study results in potential applications such as wearable smart devices and skin-attachable diagnostics sensing systems.
基金supported by the Changjiang Scholar and Innovative Research Team of the University of China(No. IRT0972)the National Natural Science Foundation of China (No.51002102)+1 种基金the Natural Science Foundation of Shanxi Province,China(No.2011011022-1)the Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi,China
文摘Submicrometer-scale ZnO composite aggregate arrays of nanorods and nanoparticles were prepared by simple wet-chemical route and studied as dye-sensitized solar cells （DSSCs） photoanodes. The ZnO composite aggregate arrays significantly improved the efficiency of DSSCs due to their relatively high surface area, fast electron transport, and enhanced light-scattering capability. A short current density （Jsc） of 11.7 mA/cm2 and an overall solar-to-electric energy conversion efficiency （η） of 3.17% were achieved for the ZnO composite aggregate DSSCs, which were much higher than those obtained for the monodisperse aggregate DSSCs （Jsc = 6.9 mA/cm2, r/= 1.51 %） and ZnO nanorod array DSSCs （Jsc = 4.2 mA/cm2, η= 0.61%）.
