It is of great scientific significance to construct a 3D dynamic structural color with a special color effect based on the microlens array.However,the problems of imperfect mechanisms and poor color quality need to be...It is of great scientific significance to construct a 3D dynamic structural color with a special color effect based on the microlens array.However,the problems of imperfect mechanisms and poor color quality need to be solved.A method of 3D structural color turning on periodic metasurfaces fabricated by the microlens array and self-assembly technology was proposed in this study.In the experiment,Polydimethylsiloxane(PDMS)flexible film was used as a substrate,and SiO2 microspheres were scraped into grooves of the PDMS film to form 3D photonic crystal structures.By adjusting the number of blade-coated times and microsphere concentrations,high-saturation structural color micropatterns were obtained.These films were then matched with microlens arrays to produce dynamic graphics with iridescent effects.The results showed that by blade-coated two times and SiO2 microsphere concentrations of 50%are the best conditions.This method demonstrates the potential for being widely applied in the anticounterfeiting printing and ultra-high-resolution display.展开更多
Silicon(Si)diffraction microlens arrays are usually used to integrating with infrared focal plane arrays(IRFPAs)to improve their performance.The errors of lithography are unavoidable in the process of the Si diffrac-t...Silicon(Si)diffraction microlens arrays are usually used to integrating with infrared focal plane arrays(IRFPAs)to improve their performance.The errors of lithography are unavoidable in the process of the Si diffrac-tion microlens arrays preparation in the conventional engraving method.It has a serious impact on its performance and subsequent applications.In response to the problem of errors of Si diffraction microlens arrays in the conven-tional method,a novel self-alignment method for high precision Si diffraction microlens arrays preparation is pro-posed.The accuracy of the Si diffractive microlens arrays preparation is determined by the accuracy of the first li-thography mask in the novel self-alignment method.In the subsequent etching,the etched area will be protected by the mask layer and the sacrifice layer or the protective layer.The unprotection area is carved to effectively block the non-etching areas,accurately etch the etching area required,and solve the problem of errors.The high precision Si diffraction microlens arrays are obtained by the novel self-alignment method and the diffraction effi-ciency could reach 92.6%.After integrating with IRFPAs,the average blackbody responsity increased by 8.3%,and the average blackbody detectivity increased by 10.3%.It indicates that the Si diffraction microlens arrays can improve the filling factor and reduce crosstalk of IRFPAs through convergence,thereby improving the perfor-mance of the IRFPAs.The results are of great reference significance for improving their performance through opti-mizing the preparation level of micro nano devices.展开更多
O435 97042147受抑全内反射特性研究=Study of the charactersof the frustrated total internal reflection[刊,中]/杨杰(中山大学激光与光谱学研究所.广东,广州(510275)),龚正烈,夏秀兰(天津理工学院物理系.天津(300191))//光电工程....O435 97042147受抑全内反射特性研究=Study of the charactersof the frustrated total internal reflection[刊,中]/杨杰(中山大学激光与光谱学研究所.广东,广州(510275)),龚正烈,夏秀兰(天津理工学院物理系.天津(300191))//光电工程.—1996,23(5).—12-16系统地研究了受抑全内反射的透过率与气隙厚度,入射光偏振特性、波长和入射角的关系,实验证明用多光束干涉效应更能合理地描述此效应;所得结果为该效应的合理应用提供了依据。图8参5(吴淑珍)展开更多
TH703 2000020805折射型微透镜列阵焦距的测量方法=Measurementsfor the focal length of refractive microlens arrays[刊,中]/田维坚,隋成华,李巧文(浙江大学技术物理所.浙江,杭州(310014)),陈波(四川大学信息光学研究所.四川,成都(61...TH703 2000020805折射型微透镜列阵焦距的测量方法=Measurementsfor the focal length of refractive microlens arrays[刊,中]/田维坚,隋成华,李巧文(浙江大学技术物理所.浙江,杭州(310014)),陈波(四川大学信息光学研究所.四川,成都(610064))//光学仪器.-1999,21(1).-5-8针对全空间折射型透镜阵列,从理论和实验上重点探讨了对其焦距的确定。结果表明,所述方法简捷实用,不仅获取了较满意的结果,而且也保证了测量精度。展开更多
文摘It is of great scientific significance to construct a 3D dynamic structural color with a special color effect based on the microlens array.However,the problems of imperfect mechanisms and poor color quality need to be solved.A method of 3D structural color turning on periodic metasurfaces fabricated by the microlens array and self-assembly technology was proposed in this study.In the experiment,Polydimethylsiloxane(PDMS)flexible film was used as a substrate,and SiO2 microspheres were scraped into grooves of the PDMS film to form 3D photonic crystal structures.By adjusting the number of blade-coated times and microsphere concentrations,high-saturation structural color micropatterns were obtained.These films were then matched with microlens arrays to produce dynamic graphics with iridescent effects.The results showed that by blade-coated two times and SiO2 microsphere concentrations of 50%are the best conditions.This method demonstrates the potential for being widely applied in the anticounterfeiting printing and ultra-high-resolution display.
基金Supported by the National Natural Science Foundation of China(NSFC 62105100)the National Key research and development program in the 14th five year plan(2021YFA1200700)。
文摘Silicon(Si)diffraction microlens arrays are usually used to integrating with infrared focal plane arrays(IRFPAs)to improve their performance.The errors of lithography are unavoidable in the process of the Si diffrac-tion microlens arrays preparation in the conventional engraving method.It has a serious impact on its performance and subsequent applications.In response to the problem of errors of Si diffraction microlens arrays in the conven-tional method,a novel self-alignment method for high precision Si diffraction microlens arrays preparation is pro-posed.The accuracy of the Si diffractive microlens arrays preparation is determined by the accuracy of the first li-thography mask in the novel self-alignment method.In the subsequent etching,the etched area will be protected by the mask layer and the sacrifice layer or the protective layer.The unprotection area is carved to effectively block the non-etching areas,accurately etch the etching area required,and solve the problem of errors.The high precision Si diffraction microlens arrays are obtained by the novel self-alignment method and the diffraction effi-ciency could reach 92.6%.After integrating with IRFPAs,the average blackbody responsity increased by 8.3%,and the average blackbody detectivity increased by 10.3%.It indicates that the Si diffraction microlens arrays can improve the filling factor and reduce crosstalk of IRFPAs through convergence,thereby improving the perfor-mance of the IRFPAs.The results are of great reference significance for improving their performance through opti-mizing the preparation level of micro nano devices.
文摘O435 97042147受抑全内反射特性研究=Study of the charactersof the frustrated total internal reflection[刊,中]/杨杰(中山大学激光与光谱学研究所.广东,广州(510275)),龚正烈,夏秀兰(天津理工学院物理系.天津(300191))//光电工程.—1996,23(5).—12-16系统地研究了受抑全内反射的透过率与气隙厚度,入射光偏振特性、波长和入射角的关系,实验证明用多光束干涉效应更能合理地描述此效应;所得结果为该效应的合理应用提供了依据。图8参5(吴淑珍)
文摘TH703 2000020805折射型微透镜列阵焦距的测量方法=Measurementsfor the focal length of refractive microlens arrays[刊,中]/田维坚,隋成华,李巧文(浙江大学技术物理所.浙江,杭州(310014)),陈波(四川大学信息光学研究所.四川,成都(610064))//光学仪器.-1999,21(1).-5-8针对全空间折射型透镜阵列,从理论和实验上重点探讨了对其焦距的确定。结果表明,所述方法简捷实用,不仅获取了较满意的结果,而且也保证了测量精度。
