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1Tunable metasurfaces towards versatilemetalenses and metaholograms:a review显示文摘Metasurfaces have attracted great attention due to their ability to manipulate the phase,amplitude,and polarization of light in a compact form.Tunable metasurfaces have been investigated recently through the integration with mechanically moving components and electrically tunable elements.Two interesting applications,in particular,are to vary the focal point of metalenses and to switch between holographic images.We present the recent progress on tunable metasurfaces focused on metalenses and metaholograms,including the basic working principles,advantages,and disadvantages of each working mechanism.We classify the tunable stimuli based on the light source and electrical bias,as well as others such as thermal and mechanical modulation.We conclude by summarizing the recent progress of metalenses and metaholograms,and providing our perspectives for the further development of tunable metasurfaces.Jaekyung Kim Junhwa Seong Younghwan Yang Seong-Won Moon Trevon Badloe Junsuk Rho 2022Advanced Photonics2022,4,2:6
2Valuation of European options in the market with daily price limit显示文摘Ban junhwa Hyeong In Choi and Hyijin Ku 2000Applied Mathematical Finance2000,,7:1
3Multi-lane Detection in Urban Driving Environments using Conditional Random Fields显示文摘Junhwa Hur Seung-Nam Kang Seung-Woo Seo 2013IEEE Intelligent Vehicles Symposium2013,,:1
4Removal of sodium acetate in Poly(vinyl alcohol) and its quantification by 1HNMR spectroscopy显示文摘Junhwa Shin Yunhye Kim Youn Mook Lim 2008Journal of Applied Polymer Science2008,107,:1
5PVDF-HFP/PMMA-coated PE separator for lithium ion battery显示文摘Joon-Yong Sohn Jong-Su Im Junhwa Shin Young-Chang Nho 2012Journal of Solid State Electrochemistry2012,,2:1
6Integrated metasurfaces for re-envisioning a near-future disruptive optical platform显示文摘Metasurfaces have been continuously garnering attention in both scientific and industrial fields,owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial structures.To date,research has mainly focused on the full control of electromagnetic characteristics,including polarization,phase,amplitude,and even frequencies.Consequently,versatile possibilities of electromagnetic wave control have been achieved,yielding practical optical components such as metalenses,beam-steerers,metaholograms,and sensors.Current research is now focused on integrating the aforementioned metasurfaces with other standard optical components(e.g.,light-emitting diodes,charged-coupled devices,micro-electro-mechanical systems,liquid crystals,heaters,refractive optical elements,planar waveguides,optical fibers,etc.)for commercialization with miniaturization trends of optical devices.Herein,this review describes and classifies metasurface-integrated optical components,and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality,light detection and ranging,and sensors.In conclusion,this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.Younghwan Yang Junhwa Seong Minseok Choi Junkyeong Park Gyeongtae Kim Hongyoon Kim Junhyeon Jeong Chunghwan Jung Joohoon Kim Gyoseon Jeon Kyung-il Lee Dong Hyun Yoon Junsuk Rho 2023Light(Science & Applications)2023,12,8:1
7Emerging low-cost,large-scale photonic platforms with soft lithography and self-assembly显示文摘Advancements in micro/nanofabrication have enabled the realization of practical micro/nanoscale photonic devices such as absorbers,solar cells,metalenses,and metaholograms.Although the performance of these photonic devices has been improved by enhancing the design flexibility of structural materials through advanced fabrication methods,achieving large-area and high-throughput fabrication of tiny structural materials remains a challenge.In this aspect,various technologies have been investigated for realizing the mass production of practical devices consisting of micro/nanostructural materials.This review describes the recent advancements in soft lithography,colloidal self-assembly,and block copolymer self-assembly,which are promising methods suitable for commercialization of photonic applications.In addition,we introduce low-cost and large-scale techniques realizing micro/nano devices with specific examples such as display technology and sensors.The inferences presented in this review are expected to function as a guide for promising methods of accelerating the mass production of various sub-wavelength-scale photonic devices.Hyunjung Kang Dohyeon Lee Younghwan Yang Dong Kyo Oh Junhwa Seong Jaekyung Kim Nara Jeon Dohyun Kang Junsuk Rho 2023Photonics Insights2023,2,2:1
8Iwasawa Theory of Quadratic Twists of X0(49)显示文摘Junhwa CHOI John COATES 2018Acta Mathematica Sinica,English Series2018,34,1:0
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