Large-area flexible transparent conductive films(TCFs)are urgently in great demand for future electronics,optoelectronics,energy devices,and applications in other fields.Indium tin oxide(ITO)TCF,which is widely used i...Large-area flexible transparent conductive films(TCFs)are urgently in great demand for future electronics,optoelectronics,energy devices,and applications in other fields.Indium tin oxide(ITO)TCF,which is widely used in modern technology,is difficult to meet the needs of scientific and technological development(especially the need for a new generation of flexible electronic devices),because indium is a non-renewable resource and expensive,and ITO is inherently brittle.展开更多
In the original publication of this paper,the affiliation and superscripted number relating to the current address of the authors has been documented incorrectly.The corrected information appears in this erratum.
As a type of thin film,two dimensional(2D) reticulate architectures built of freestanding single-walled carbon nanotube(SWCNT) bundles are suitable for scalable integration into devices and nanocomposites for many app...As a type of thin film,two dimensional(2D) reticulate architectures built of freestanding single-walled carbon nanotube(SWCNT) bundles are suitable for scalable integration into devices and nanocomposites for many applications.The superior properties of these films,such as optical transparency,unique electrical properties and mechanical flexibility,result not only from the outstanding properties of individual SWCNTs but also from the collective behavior of the individual tubes,with additional properties arising from the tube-tube interactions.In this review,the synthesis,structure and fundamental properties,such as conductivity,transparency,optical nonlinearity and mechanical performance,of "freestanding SWCNT bundle network" thin films and nanocomposites,as well as their application as supercapacitors are highlighted.Some long-standing problems and topics warranting further investigation in the near future are addressed.展开更多
目的:探讨舒芬太尼联合罗哌卡因对高龄产妇无痛分娩分娩结局与母婴NO、皮质醇水平的影响。方法:回顾性分析2019年11月—2021年11月我院收治的92例无痛分娩产妇的临床资料,按不同镇痛方式分为观察组(n=47)与对照组(n=45)。观察组给予舒...目的:探讨舒芬太尼联合罗哌卡因对高龄产妇无痛分娩分娩结局与母婴NO、皮质醇水平的影响。方法:回顾性分析2019年11月—2021年11月我院收治的92例无痛分娩产妇的临床资料,按不同镇痛方式分为观察组(n=47)与对照组(n=45)。观察组给予舒芬太尼联合罗哌卡因镇痛,对照组给予罗哌卡因镇痛。比较两组镇痛效果、妊娠结局及产妇与新生儿娩出后胎儿血清一氧化氮(NO)、皮质醇(COR)水平。结果:观察组镇痛总有效率高于对照组,差异有统计学意义(P<0.05);两组器械助产与胎心异常发生率比较,差异无统计学意义(P>0.05);观察组剖宫产发生率与产后24h出血量低于对照组,差异有统计学意义(P<0.05)。两组各时间点NO水平比较,差异无统计学意义(P>0.05);观察组镇痛后1 h COR水平低于对照组,差异有统计学意义(P<0.05);两组新生儿娩出后COR水平低于同组镇痛后1 h时且观察组低于对照组,差异有统计学意义(P<0.05)。结论:高龄产妇无痛分娩时选择舒芬太尼与罗哌卡因联合镇痛效果显著,不仅可提高自然分娩率,还可降低NO与COR水平,对母婴发展均有利。展开更多
Mesoporous scaffold structures have played great roles in halide perovskite solar cells(PSCs),due to the excellent photovoltaic performance and commercial perspective of mesoporous PSCs.Here,we reported a mixed-phase ...Mesoporous scaffold structures have played great roles in halide perovskite solar cells(PSCs),due to the excellent photovoltaic performance and commercial perspective of mesoporous PSCs.Here,we reported a mixed-phase TiO2 mesoporous film as an efficient electron transport layer(ETL)for mesoporous perovskite solar cells.Due to the improved crystal phase,fihn thickness and nanopartMe size of TiO2 layer,which were controlled by varying the one-step hydrothermal reaction time and annealing time,the PSCs exhibited an outstanding short circuit photocurrent density of 25.27 mA/cm^2,and a maximum power conversion efficiency(PCE)of 19.87%.It is found that the ultra-high Jsc attributes to the excellent film quality,light capturing and excellent electron transport ability of mixed-phase TiO2 mesoporous film.The results indicate that mix-phase mesoporous metal oxide fihns could be a promising candidate for producing effective ETLs and high efficiency PSCs.展开更多
Research interest in ZnO nanostructures derives from their excellent luminescent properties and availability of low cost fabricating and processing,which hold promise for the development of electronic and optoelectron...Research interest in ZnO nanostructures derives from their excellent luminescent properties and availability of low cost fabricating and processing,which hold promise for the development of electronic and optoelectronic nanodevices.In this review,we focus on the progress in synthesis,properties and nanodevices of ZnO nanorod(NR)arrays and nanotetrapods(NTPs).Recent work done by the authors are also presented.After a brief introduction to the controlled fabrication methods for the highly-ordered ZnO NR arrays and NTPs,we present some aspects of the fundamental properties,especially optical performance,of ZnO NRs/NTPs.Then,we provide an overview of the applications to functional nanodevices based on individual NR and NTP of ZnO.It is demonstrated that different morphologies of ZnO nanostructures have salient effects on their properties and applications.Although much progress has been achieved in the fundamental and applied investigations of ZnO NRs/NTPs over the past decade,many obstacles still remain,hampering further development in this field.Finally,some longstanding problems that warrant further investigation are addressed.展开更多
基金supported by the Ministry of Science and Technology of Chinathe National Natural Science Foundation of ChinaCAS
文摘Large-area flexible transparent conductive films(TCFs)are urgently in great demand for future electronics,optoelectronics,energy devices,and applications in other fields.Indium tin oxide(ITO)TCF,which is widely used in modern technology,is difficult to meet the needs of scientific and technological development(especially the need for a new generation of flexible electronic devices),because indium is a non-renewable resource and expensive,and ITO is inherently brittle.
文摘In the original publication of this paper,the affiliation and superscripted number relating to the current address of the authors has been documented incorrectly.The corrected information appears in this erratum.
基金supported by the National Natural Science Foundation of China (10334060, 50572119, 90921012, 51172271)the National Basic Research Program of China (2005CB623602, 2012CB932302)+1 种基金Beijing Municipal Education Commission (YB20108000101)the Key Item of Knowledge Innovation Project of Chinese Academy of Sciences (KJCX2- YW-M01)
文摘As a type of thin film,two dimensional(2D) reticulate architectures built of freestanding single-walled carbon nanotube(SWCNT) bundles are suitable for scalable integration into devices and nanocomposites for many applications.The superior properties of these films,such as optical transparency,unique electrical properties and mechanical flexibility,result not only from the outstanding properties of individual SWCNTs but also from the collective behavior of the individual tubes,with additional properties arising from the tube-tube interactions.In this review,the synthesis,structure and fundamental properties,such as conductivity,transparency,optical nonlinearity and mechanical performance,of "freestanding SWCNT bundle network" thin films and nanocomposites,as well as their application as supercapacitors are highlighted.Some long-standing problems and topics warranting further investigation in the near future are addressed.
文摘目的:探讨舒芬太尼联合罗哌卡因对高龄产妇无痛分娩分娩结局与母婴NO、皮质醇水平的影响。方法:回顾性分析2019年11月—2021年11月我院收治的92例无痛分娩产妇的临床资料,按不同镇痛方式分为观察组(n=47)与对照组(n=45)。观察组给予舒芬太尼联合罗哌卡因镇痛,对照组给予罗哌卡因镇痛。比较两组镇痛效果、妊娠结局及产妇与新生儿娩出后胎儿血清一氧化氮(NO)、皮质醇(COR)水平。结果:观察组镇痛总有效率高于对照组,差异有统计学意义(P<0.05);两组器械助产与胎心异常发生率比较,差异无统计学意义(P>0.05);观察组剖宫产发生率与产后24h出血量低于对照组,差异有统计学意义(P<0.05)。两组各时间点NO水平比较,差异无统计学意义(P>0.05);观察组镇痛后1 h COR水平低于对照组,差异有统计学意义(P<0.05);两组新生儿娩出后COR水平低于同组镇痛后1 h时且观察组低于对照组,差异有统计学意义(P<0.05)。结论:高龄产妇无痛分娩时选择舒芬太尼与罗哌卡因联合镇痛效果显著,不仅可提高自然分娩率,还可降低NO与COR水平,对母婴发展均有利。
文摘Mesoporous scaffold structures have played great roles in halide perovskite solar cells(PSCs),due to the excellent photovoltaic performance and commercial perspective of mesoporous PSCs.Here,we reported a mixed-phase TiO2 mesoporous film as an efficient electron transport layer(ETL)for mesoporous perovskite solar cells.Due to the improved crystal phase,fihn thickness and nanopartMe size of TiO2 layer,which were controlled by varying the one-step hydrothermal reaction time and annealing time,the PSCs exhibited an outstanding short circuit photocurrent density of 25.27 mA/cm^2,and a maximum power conversion efficiency(PCE)of 19.87%.It is found that the ultra-high Jsc attributes to the excellent film quality,light capturing and excellent electron transport ability of mixed-phase TiO2 mesoporous film.The results indicate that mix-phase mesoporous metal oxide fihns could be a promising candidate for producing effective ETLs and high efficiency PSCs.
基金supported by the National Natural Science Foundation of China(Grant Nos.10334060,90406022,90921012,50702002,50772055,50871060 and 60807016)Ministry of Science and Technology of China(Grant Nos.2005CB623602,2006CB932401,2006AA03Z350,2010CB832905 and 2012CB932302)
文摘Research interest in ZnO nanostructures derives from their excellent luminescent properties and availability of low cost fabricating and processing,which hold promise for the development of electronic and optoelectronic nanodevices.In this review,we focus on the progress in synthesis,properties and nanodevices of ZnO nanorod(NR)arrays and nanotetrapods(NTPs).Recent work done by the authors are also presented.After a brief introduction to the controlled fabrication methods for the highly-ordered ZnO NR arrays and NTPs,we present some aspects of the fundamental properties,especially optical performance,of ZnO NRs/NTPs.Then,we provide an overview of the applications to functional nanodevices based on individual NR and NTP of ZnO.It is demonstrated that different morphologies of ZnO nanostructures have salient effects on their properties and applications.Although much progress has been achieved in the fundamental and applied investigations of ZnO NRs/NTPs over the past decade,many obstacles still remain,hampering further development in this field.Finally,some longstanding problems that warrant further investigation are addressed.
