【摘 要】
:
The optical limiting performances of few-layer transitional metal dichalcogenides[TMDs]nanosheets in the VB group[VS2,VSe2,NbS2,NbSe2,TaS2,and TaSe2]were systematically investigated for the first time,to the best of our knowledge.It was found that these T
【机 构】
:
Department of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350108,China;
论文部分内容阅读
The optical limiting performances of few-layer transitional metal dichalcogenides[TMDs]nanosheets in the VB group[VS2,VSe2,NbS2,NbSe2,TaS2,and TaSe2]were systematically investigated for the first time,to the best of our knowledge.It was found that these TMDs nanosheets showed a normalized transmittance in the range of 20%-40% at the input energy of 1.28 GW/cm2.Ultralow initial threshold Fs[0.05-0.10 J/cm2]and optical limiting threshold FoL[0.82-223J/cm2]were achieved in the TMDs nanosheets,which surpassed most of the optical limiting materials.This work showed the potential of TMDs beyond MoS2 in optical limiting field.
其他文献
We propose a simple five-layer structure for creating red structural color,which has high color purity and high brightness.The design is based on the superposition of a silver substrate and multilayer silicon material.Absorption at the shorter wavelengths
In order to realize the ultrastrong absorption of graphene with electrical modulation properties,we designed a composite structure of graphene and parity-time[PT]symmetry photonic crystal,which is achieved by placing the graphene layer on the top layer of
利用2017年我国最新流动人口动态监测数据和278个城市数据的匹配数据,考察了城乡居民医保参与对自雇流动人口城市融入的影响.研究发现,城乡居民医保参与会显著提升自雇流动人口城市融入.为克服实证模型的内生性问题和选择性偏误,运用TEM模型和CMP方法进行回归,并结合倾向得分匹配方法(PSM)构造反事实框架,纠正可能的选择性偏误,所得结果依然支持城乡居民医保参与对自雇流动人口城市融入的正向影响效应.分位数回归结果显示,城乡居民医保参与对中等城市融入度的自雇流动人口影响最大.样本异质性分析发现,城乡居民医保参与
基于2004-2016年中国271个地级市的面板数据,构建动态面板门槛模型,探究环境规制对技术创新影响绿色全要素能源效率的非线性效应.结果 显示:技术创新能够显著提升绿色全要素能源效率,且这种提升作用存在门槛特征,在环境规制处于门槛值以上时,提升作用较大.技术创新直接通过绿色技术创新效应、间接通过经济增长效应、产业结构升级效应、外商直接投资效应等影响绿色全要素能源效率,并且只有当环境规制水平超过门槛值时,间接影响机制才有效.中国每年越过环境规制门槛值的城市数量逐年递增,但是仍有少量城市在样本期内未跨越门槛
Metalenses are expected to play an increasingly important role in miniaturized and integrated optical imaging components/systems.However,devising broadband achromatic metalenses with high focusing efficiencies is still quite challenging.In this work,we pr
智慧治理作为新时代背景下社会治理与信息化技术深度融合的产物,在实践中不断提升着治理的效能和质量.以数字化、智能化等应用信息技术为核心的技术突破,在重塑治理结构的同时亦改变了传统的制度规范.当前智慧治理能力建设过程中存在技术应用缺乏透明度、布局缺乏统筹性、执行缺乏权宜性等技术失控问题,还存在权力结构失衡、话语结构固化、行动结构分散等结构失当问题,以及实体规范缺失及虚拟规范难以适用等制度失准问题.建议通过完善技术设计规划、优化建设结构布局及构建系统规约制度等路径,强化智慧治理能力建设.
Two-dimensional[2D]Sn-based perovskites are a kind of non-toxic environment-friendly emission material with low photo-luminescence quantum yields[PLQYs]and enhanced emission linewidths compared to that of 2D Pb-based perovskites.However,there is no work s
A patterned polymer dispersed liquid crystal transparent display using one-time UV exposure is demonstrated.The device is fabricated by exposing the cell with a uniform UV light through a mask with selective attenuation of the UV light.The voltage-transmi
以环太湖区县1980年、2000年和2018年土地利用遥感数据为基础,采用当量因子法、景观格局指数、相关分析等方法,分析太湖沿岸五公里景观格局演变趋势,并对生态系统服务价值与景观格局的耦合作用进行研究.结果表明:近四十年来,研究区景观类型呈现耕地减少、建设用地增加的趋势.景观破碎化程度加深,连通性降低,景观格局趋向复杂化,景观结构稳定性减弱.耕地破碎且形状趋于复杂,建设用地面积快速增长并呈大面积连片分布态势.研究区生态系统服务价值总体呈降低趋势,水域景观对生态系统服务价值总量贡献最大.景观格局变化对生态系
The genus Sheathia consists of over 20 species primarily distributed in Asia,Europe,Oceania,North America,and Africa.However,the origin and evolution of this genus remain unclear.Two gametophyte stage specimens(SAS18052 and SAS18523)and two“Chantransia”st