Article
Materials Science, Multidisciplinary
Yong-Qiang Liu, Wenqiang Chen, Xuemei Du, Yingchao Shu, Lujun Wu, Zhongru Ren, Hongcheng Yin, Jinhai Sun, Kainan Qi, Yongxing Che, Liangsheng Li
Summary: This paper presents an ultrathin plasmonic metalens with high transmissive efficiency and focusing efficiency, which can play a significant role in the low frequency range. By changing the cell size on the lens surface, an ultra-thin metalens with a thickness of only 0.1 times the working wavelength is designed. Experimental results show that the metalens achieves 80% transmissive efficiency and 50% focusing efficiency on the focal plane. The influence of the open angle of the symmetric split ring transmitarray metasurface on the focusing performance of the metalens is also studied and analyzed, providing new insights for optimizing its performance.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Guangyuan Li, Xiang Du, Lei Xiong, Xiuhua Yang
Summary: This study reports an ultrahigh-Q plasmonic metasurface with an SLR-based design that achieves an ultrahigh quality factor of 1427 theoretically and 790 experimentally at 712 nm, representing a 240% improvement over the state of the art. The quality factor of the out-of-plane SLR in periodic gold or silver nanorods is greatly enhanced by reducing the nanorod height from 100 to 50 nm. These findings are expected to enable the development of high-performance nanolasers, nonlinear frequency converters, and biosensors based on ultrahigh-Q plasmonic metasurfaces.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Andrew Butler, Christos Argyropoulos
Summary: In this work, the unique properties of a plasmonic Huygens' metasurface composed of active metal-dielectric core-shell nanoparticles are analyzed. The reflection and transmission coefficients of the metasurface are calculated under various levels of gain, demonstrating the existence of reflectionless transmission when an exceptional point is formed. The proposed new active metasurface design, with subwavelength thickness, can be used to realize ultracompact perfect transmission optical filters.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Chemistry, Physical
Seunghyun Lee, Daseul Jeong, Sriram Kk, Shangzhi Chen, Fredrik Westerlund, Byeongwon Kang, Kyoung-Ho Kim, Magnus P. Jonsson, Evan S. H. Kang
Summary: Electrically tunable and electrode-free metasurfaces can operate across the entire spectral range of the material, including the mid-infrared region, by using plasmonic polymer inverted nanoantenna arrays. The nanofabrication method presented in this study is suitable for various types of plasmonic polymer metasurfaces, including inverted arrays of nanoantennas. Inverted metasurfaces are of particular interest as they can work as electrodes themselves, enabling electrical control without the need for additional electrodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhu, Yuancheng Fan, Ruisheng Yang, Guangzhou Geng, Quanhong Fu, Changzhi Gu, Junjie Li, Fuli Zhang
Summary: This article demonstrates silicon-based metasurfaces capable of generating versatile wavefronts under different polarization light incidence at visible wavelengths, with great potential for applications in integrated functional optical devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Carlota Ruiz de Galarreta, Noemi Casquero, Euan Humphreys, Jacopo Bertolotti, Javier Solis, C. David Wright, Jan Siegel
Summary: This study presents a novel single-step process for the rapid fabrication of high-performance mid- and long-wave infrared EOT metasurfaces using ultrafast direct laser writing. By carefully controlling three key experimental parameters, the optical characteristics of the extraordinary transmission effect can be precisely controlled. The fabricated devices exhibit high performance, flexibility, and reliability, demonstrating the potential for mass production of metasurfaces with on-demand optical properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
M. Saad Bin-Alam, Joshua Baxter, Kashif M. Awan, Antti Kiviniemi, Yaryna Mamchur, Antonio Cala Lesina, Kosmas L. Tsakmakidis, Mikko J. Huttunen, Lora Ramunno, Ksenia Dolgaleva
Summary: Researchers have developed an RLC circuit model to estimate the nonlinear optical properties of meta-atoms, overcoming the current difficulty in determining their nonlinear optical properties. Results from different methods agree well, indicating that the RLC model can efficiently design nonlinear plasmonic metasurfaces.
Article
Optics
Yuhu Tang, Yao Liang, Jin Yao, Mu Ku Chen, Shirong Lin, Zhuo Wang, Jingcheng Zhang, Xu Guang Huang, Changyuan Yu, Din Ping Tsai
Summary: This study demonstrates numerically the use of 3D plasmonic metasurfaces to overcome the trade-off between Q-factor and circular dichroism (CD) in chiral BIC metasurfaces, achieving high-Q quasi-BIC resonances (Q ≈ 938) with strong CD (≈ 0.67) in the mid-infrared. The independent manipulation of Q-factor and CD is made possible by the dissimilar dimer configuration consisting of a twisted vertical split-ring resonator (VSRR) and a wall, where the height of the wall and the twisted angle of the VSRR control the Q-factor and CD, respectively. These findings offer new paradigms for controlling advanced chiroptical responses and have potential applications that require strong CD with enhanced light-matter interaction.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
M. Saad Bin-Alam, Orad Reshef, Yaryna Mamchur, M. Zahirul Alam, Graham Carlow, Jeremy Upham, Brian T. Sullivan, Jean-Michel Menard, Mikko J. Huttunen, Robert W. Boyd, Ksenia Dolgaleva
Summary: Plasmonic nanostructures show great potential in ultra-thin sub-wavelength devices, but are often limited by resistive losses. By utilizing surface lattice resonances (SLRs), researchers have achieved a high quality-factor metasurface in the telecommunication band, offering exciting possibilities for manipulating incident light fields and creating flexible wavelength-scale devices.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Xiuyu Wang, Xiaoman Wang, Jihong Xin, Jitao Li, Qun Ren, Haocheng Cai, Yuxin Lang, Zhihao Lan, Yuqi Jia, Ruiqi Jin, Yuqing He, Jian Wei You, Wei E. I. Sha, Yanwei Pang
Summary: Metasurfaces offer new opportunities for applications in nonlinear optics, plasmonics and electromagnetics by controlling and enhancing nonlinear effects at the nanoscale. This paper proposes a tri-capacitance-like metasurface that generates multiple high-Q resonances, which can significantly improve the second order nonlinear efficiency and facilitate sum and difference frequency generation.
OPTICS COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Shikai Deng, Jeong-Eun Park, Gyeongwon Kang, Jun Guan, Ran Li, George C. Schatz, Teri W. Odom
Summary: This study demonstrates how interfacial engineering of plasmonic nanoparticle lattices with specific surface characteristics can control plasmon-molecule interactions for tunable nanolasing thresholds. Graphene-coated copper nanoparticles surrounded by aromatic dye molecules exhibit lower lasing thresholds and can support lasing at lower concentrations compared to bare copper nanoparticles.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Jian Zhang, Qiang Li, Chenjie Dai, Mingliang Cheng, Xin Hu, Hyun-Sik Kim, Heesun Yang, Daniel J. Preston, Zhongyang Li, Xuefeng Zhang, Won-Kyu Lee
Summary: This paper presents a general approach to developing tunable plasmonic metasurfaces with hydrogel meta-atoms at the subwavelength scale. The size of hydrogel nanodots can be reversibly controlled by absorbing or releasing water, resulting in humidity-responsive surface plasmon polaritons (SPPs) that generate plasmonic color rendering in the visible spectrum. The size variations of constituent hydrogel nanostructures enable broadband beam-steering on a phase modulator.
Article
Optics
Zhe Shen, Dingxin Huang, Xiaojun Lin
Summary: In this study, a state-of-the-art metasurface model that breaks mirror and rotation symmetries was proposed. It demonstrated chirality-selective absorption for circularly polarized light and had potential applications in CD spectral detection, optical communication, and optical filtering.
Article
Optics
Okan Koksal, Junyeob Song, Zi Wang, Lu Chen, Wenqi Zhu, Amit Agrawal
Summary: This study introduces a method to fabricate anti-reflective metasurfaces using a single nanolithography step after deposition of multiple dielectrics onto a substrate. Compared to conventional equivalents, anti-reflective metasurfaces offer better transmission efficiencies and reduce spurious diffraction and higher-order scattering. The results show improved focusing efficiencies for both low and high numerical apertures.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Zhe Shen, Dingxin Huang, Xiaojun Lin
Summary: In this work, a state-of-the-art metasurface model that breaks the symmetry of the structure is proposed. It has the capability of selectively absorbing circularly polarized light in different bands. The absorbers exhibit great circular dichroism and symmetric absorption, and the absorption peaks can be tuned by changing the geometrical parameters of the structure.
Article
Chemistry, Multidisciplinary
Zhihao Li, Xianggui Zhou, Subhash Singh, Xiaoming Wei, Chunlei Guo, Weishan Li
Summary: Platinum has high electrocatalytic activity but can be poisoned by certain substances. This study reveals that platinum loses its electrocatalytic activity for methanol oxidation in the presence of lead contamination. The decrease in activity is demonstrated by comparing methanol oxidation current using a lead counter electrode versus a platinum counter electrode. The mechanism is attributed to the adsorption of trace lead ions from the lead counter electrode, as confirmed by calculating binding energies. This report is important for the design and management of direct methanol fuel cells, considering the potential negative effect of trace lead contamination.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Gan Yuan, Yu Liu, Fei Xie, Chunlei Guo, Chi-Vinh Ngo, Wei Li
Summary: This study uses femtosecond lasers to create micro-nanostructures on aluminum alloy substrates as molds for imprinting on polypropylene materials. The resulting superhydrophobic surfaces exhibit excellent rain collection efficiency, especially in arid areas, with potential for more than 100% improvement compared to flat surfaces.
Article
Optics
Jihua Zhang, Jinyong Ma, Dragomir N. Neshev, Andrey A. Sukhorukov
Summary: We predict that ultrathin nonlinear lithium niobate metasurfaces can generate and diversely tune spatially entangled photon pairs, which is essential for testing fundamental laws of quantum mechanics and various quantum applications.
CHINESE OPTICS LETTERS
(2023)
Article
Chemistry, Physical
Yu Liu, Gan Yuan, Fei Xie, Yang An, Jianwen Sun, Ning Zhao, Yongbo Deng, Longnan Li, Subhash C. Singh, Chi-Vinh Ngo, Wei Li, Chunlei Guo
Summary: Water, sanitation, and hygiene (WASH) investments are crucial to prevent and recover from pandemics and outbreaks, and to prevent antimicrobial resistance. However, over 2 billion people lack access to proper sanitation, leading to devastating impacts on public health and economic development. A femtosecond laser processing technology combined with silicone oil coating has been developed to create a slippery surface that repels feces, known as the fecalphobic surface. This surface requires minimal water and allows for easy removal of solids, improving sanitation solutions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Optics
Kwang Jin Lee, Ran Wei, Ye Wang, Jihua Zhang, Wenchi Kong, Sandeep Kumar Chamoli, Tao Huang, Weili Yu, Mohamed ElKabbash, Chunlei Guo
Summary: Placing three-dimensional lead-halide perovskite films on hyperbolic metamaterials can significantly decrease the recombination rate and prolong the carrier lifetime. This decrease is attributed to the dominant in-plane transition dipole of the films. The insights gained from this study offer novel means to enhance the efficiency of perovskite-based optoelectronic and photonic devices.
Article
Chemistry, Multidisciplinary
Chi-Vinh Ngo, Yu Liu, Wei Li, Jianjun Yang, Chunlei Guo
Summary: Conversion of a regular metal surface to a superhydrophobic one using laser processing shows great potential for applications such as anti-fouling, anti-corrosion, and anti-icing. This study demonstrates a facile laser technique that can convert the wetting behavior of aluminum surface from hydrophilic to hydrophobic and superhydrophobic with single-shot nanosecond laser irradiation. This technique offers a fast and scalable method to produce laser-induced surface superhydrophobicity.
Article
Chemistry, Physical
Chaudry Sajed Saraj, Subhash C. Singh, Gopal Verma, Amged Alquliah, Wei Li, Chunlei Guo
Summary: Researchers developed a physical method of electric field-assisted pulsed laser ablation in liquid for the synthesis of pure CuMoO4 (CMO) electrocatalysts. This method can control the morphology, crystallinity, and composition of the catalysts and enhance their hydrogen evolution reaction performance.
APPLIED SURFACE SCIENCE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Jinyong Ma, Jihua Zhang, Yuxin Jiang, Tongmiao Fan, Matthew Parry, Dragomir N. Neshev, Andrey A. Sukhorukov
Summary: We propose and demonstrate the preparation of desired two-photon polarization states using a nonlinear metasurface incorporating multiplexed silica metagratings on a lithium niobate film. The two-photon polarization states can be shaped by adjusting the metagrating orientation, and by combining multiple metagratings, arbitrary polarization-entangled qutrit states can be generated. This enables the miniaturization of optically controlled quantum devices using ultrathin metasurfaces as polarization-entangled photon sources.
Article
Chemistry, Multidisciplinary
Zihao Li, Luheng Tang, Hanbin Wang, Subhash C. Singh, Xiaoming Wei, Zhongmin Yang, Chunlei Guo
Summary: This paper reports a novel water collector design based on a nature-inspired hybrid superhydrophilic/superhydrophobic aluminum surface, which can provide a sustainable solution to global water shortage. The surface, fabricated by combining laser and chemical treatments, achieves a 163° contrast in contact angles between the superhydrophilic pattern and the superhydrophobic background. This unique superhydrophilic/superhydrophobic combination presents a self-pumped mechanism, providing the hybrid collector with highly efficient water harvesting performance. Based on simulations and experimental measurements, the water harvesting rate of the repeating units of the pattern was optimized, and the corresponding hybrid collector achieves a water harvesting rate of 0.85 kg m(-2) h(-1). Additionally, the hybrid collector exhibits good stability, flexibility, as well as thermal conductivity, showing great potential for practical application.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jinyong Ma, Jihua Zhang, Yuxin Jiang, Tongmiao Fan, Matthew Parry, Dragomir N. Neshev, Andrey A. Sukhorukov
Summary: The use of a nonlinear metasurface and a thin film allows for the flexible manipulation of complex polarization states of photon pairs. It is found that the orientation of the metagratings can shape the polarization states of the photon pairs. Additionally, combining three metagratings enables the generation of arbitrary polarization-entangled qutrit states.
Article
Optics
Chaudry Sajed Saraj, Subhash C. Singh, Gopal Verma, Rahul A. Rajan, Wei Li, Chunlei Guo
Summary: The electrochemical generation of fuels through electrochemical oxidation/reduction of radicals is a green approach, but suffers from slow kinetics. In this study, a saving of about 45% in energy was achieved for the electrochemical hydrogen generation rate by enhancing the reagent concentration through localized electric field. Using laser-induced periodic surface structured (LIPSS) electrodes, the overpotentials for HER and OER were decreased, and the energy reduction capability was demonstrated in various electrolytes. The LIPSS-patterned electrodes also showed enhanced stability and lower potential requirements for driving current density.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Nanoscience & Nanotechnology
Sandeep Kumar Chamoli, Wei Li, Chunlei Guo, Mohamed ElKabbash
Summary: We theoretically analyze the impact of angular selectivity on the radiative cooling performance of thermal emitters and propose a general scheme to achieve angular and spectral selectivity. We demonstrate that combining these two selectivities is necessary to reach subfreezing temperatures and introduce a thin film stack to realize this scheme.
Review
Chemistry, Physical
Subhash C. Singh, Chunlei Guo
Summary: This review focuses on femtosecond-laser induced broadband and selective solar absorbers and their applications in solar thermoelectric generators and solar-thermal water purification. The article discusses the control methods of surface structures during laser processing and the effects of different structures on optical absorption and emission.