近几年,番茄褐色皱纹果病毒全球大暴发,已成为番茄生产上的重大威胁之一。番茄褐色皱纹果病毒(Tomato brown rugose fruit virus,ToBRFV)是烟草花叶病毒属(Tobamovirus)的新成员。ToBRFV的高度稳定性和多重传播途径使其防控异常困难,可...近几年,番茄褐色皱纹果病毒全球大暴发,已成为番茄生产上的重大威胁之一。番茄褐色皱纹果病毒(Tomato brown rugose fruit virus,ToBRFV)是烟草花叶病毒属(Tobamovirus)的新成员。ToBRFV的高度稳定性和多重传播途径使其防控异常困难,可导致番茄产量损失高达70%。随着全球番茄产业的规模化发展,种子和幼苗的国际流通加速了ToBRFV的跨境传播,目前全球已有包括中国在内的37个国家报道该病毒为害。综述了ToBRFV的分布现状、基因组特征、诊断技术、致病机制及综合防控策略的最新研究进展,旨在为番茄产业健康可持续发展及抗病育种提供理论参考。展开更多
Developing high sensitive organic semiconductors(OSCs)in organic thin-film transistors(OTFTs)is the key for OTFT based gas sensors.Herein,we report a simple processing route of highly sensitive OSCs for high performan...Developing high sensitive organic semiconductors(OSCs)in organic thin-film transistors(OTFTs)is the key for OTFT based gas sensors.Herein,we report a simple processing route of highly sensitive OSCs for high performance OTFT based nitrogen dioxide(NO2)sensors,where the active OSC layer is based on ultraviolet-ozone(UVO)treated poly(3-hexylthiophene-2,5-diyl)(P3HT).Compared to conventional P3HT based OTFT sensors,the reported device exhibits a remarkable improvement of the gas response from 350%to 30000%.The studies in morphologies,chemical compositions and microstructures of the UVOtreated films reveal that a large number of carrier traps generated in the P3HT films is the decisive reason for the enhancement of sensing performance.Moreover,the optimized device shows great potential of practical applications on the stand points of sensitivity,selectivity,reusability and the ability of recovery,as well as limit of detection of~7.3 ppb.This simple method provides an innovative understanding for the role of the carrier traps in sensing performance and demonstrates a bright future for developing high performance OTFT gas sensors.展开更多
文摘近几年,番茄褐色皱纹果病毒全球大暴发,已成为番茄生产上的重大威胁之一。番茄褐色皱纹果病毒(Tomato brown rugose fruit virus,ToBRFV)是烟草花叶病毒属(Tobamovirus)的新成员。ToBRFV的高度稳定性和多重传播途径使其防控异常困难,可导致番茄产量损失高达70%。随着全球番茄产业的规模化发展,种子和幼苗的国际流通加速了ToBRFV的跨境传播,目前全球已有包括中国在内的37个国家报道该病毒为害。综述了ToBRFV的分布现状、基因组特征、诊断技术、致病机制及综合防控策略的最新研究进展,旨在为番茄产业健康可持续发展及抗病育种提供理论参考。
基金supported by the National Natural Science Foundation of China(Grant Nos.61421002,61675041,51703019&31771079)the National Key R&D Program of China(Grant No.2018YFB0407102)+2 种基金the Project of Science and Technology of Sichuan Province(Grant Nos.2020YFG0281,2019YFG0121&2020YFG0279)City University of Hong Kong(Grant No.9610423)sponsored by Sichuan Province Key Laboratory of Display Science and Technology。
文摘Developing high sensitive organic semiconductors(OSCs)in organic thin-film transistors(OTFTs)is the key for OTFT based gas sensors.Herein,we report a simple processing route of highly sensitive OSCs for high performance OTFT based nitrogen dioxide(NO2)sensors,where the active OSC layer is based on ultraviolet-ozone(UVO)treated poly(3-hexylthiophene-2,5-diyl)(P3HT).Compared to conventional P3HT based OTFT sensors,the reported device exhibits a remarkable improvement of the gas response from 350%to 30000%.The studies in morphologies,chemical compositions and microstructures of the UVOtreated films reveal that a large number of carrier traps generated in the P3HT films is the decisive reason for the enhancement of sensing performance.Moreover,the optimized device shows great potential of practical applications on the stand points of sensitivity,selectivity,reusability and the ability of recovery,as well as limit of detection of~7.3 ppb.This simple method provides an innovative understanding for the role of the carrier traps in sensing performance and demonstrates a bright future for developing high performance OTFT gas sensors.
