Article
Physics, Applied
Shaohua Dong, Shiqing Li, Xiaohui Ling, Guangwei Hu, Yi Li, Hongyi Zhu, Lei Zhou, Shulin Sun
Summary: This study introduces a high-efficiency and broadband spin-unlocked metasurface by combining the resonance phase and the geometric phase mechanisms. The design is achieved by changing one geometric parameter instead of multi-parameter optimization. Experimental results demonstrate the anomalous photonic spin Hall effect and completely independent wavefront manipulations achieved by the spin-unlocked metasurface.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Liang Xu, Dan Yang Wang, Xin Ge Zhang, Lin Bai, Wei Xiang Jiang, Tie Jun Cui
Summary: Information technology is advancing towards interconnected and intelligent connections of all objects. A networked metasurface with online electromagnetic manipulation capabilities has been proposed and realized, allowing multiple users to access and control the reflected beams through cloud connections. Experimental results demonstrate the online programmability of the networked metasurface. This approach provides a practical route for realizing networked metasurfaces, with potential applications in smart electromagnetic control nodes, distributed cooperative metasurface systems, and metasurface-assisted wireless networks.
Article
Nanoscience & Nanotechnology
Yuegan Song, Yanlei Hu, Yachao Zhang, Guoqiang Li, Dawei Wang, Yi Yang, Yafeng Zhang, Yiyuan Zhang, Wulin Zhu, Jiawen Li, Dong Wu, Jiaru Chu
Summary: This study introduces a smart surface with tunable wettability, utilizing femtosecond laser direct writing to achieve distinct wettability of different components, enabling reversible switching between multiple wetting states for multifunctional manipulation of droplets in microfluidic applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Juan Deng, Liangui Deng, Zhou Zhou, Fan Gao, Bin Lv, Mengen Du, Bo Yan
Summary: This article introduces a new method for generating nanoprinting and holographic images simultaneously, using tri-redundancy to solve the problems in single-sized schemes. A multifunctional metasurface is fabricated and demonstrated with flexible working modes and a simple design scheme for multifunctional integration.
Article
Nanoscience & Nanotechnology
Xiaojian Fu, Lei Shi, Jun Yang, Yuan Fu, Chenxi Liu, Jun Wei Wu, Fei Yang, Lei Bao, Tie Jun Cui
Summary: This study develops a terahertz beam steering device using a liquid-crystal-integrated programmable metasurface. Numerical simulations and experiments demonstrate its phase control and beam steering capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
Sheng-Dong Zhao, Hao-Wen Dong, Xuan-Bo Miao, Yue-Sheng Wang, Chuanzeng Zhang
Summary: This paper reports on the design of broadband acoustic coding metasurfaces (BACMs) using bottom-up topology optimization. The previously reported acoustic coding metasurfaces (ACMs) had limitations in narrow-band modulation capability, which were addressed in this study. By optimizing the design, units with different phase shifts were created, and the mechanisms behind the constant phase differences were analyzed. The optimized BACMs improved the functionality of fixed coding metasurfaces and inspired the idea of fabricating fast-sector-scanning sound antennas. Additionally, the BACMs demonstrated potential applications in ultrasonic therapy, low-scattering target design, and noise control.
PHYSICAL REVIEW APPLIED
(2022)
Article
Computer Science, Information Systems
Jitao Li, Zhen Yue, Jie Li, Chenglong Zheng, Silei Wang, Mengyao Li, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: This paper designs spatially interleaved terahertz metasurfaces based on the ingenious spatial interleaving principles and demonstrates diverse wavefront manipulations in the terahertz range. The functions performed include OAM superposition of single-frequency vortex beams, separate vortex focusing of single-frequency dual beams, different OAM manipulations of bifrequency beams in different planes, and achromatic focusing. These functions prove that spatially interleaved metasurfaces can manipulate terahertz wavefronts at both single frequency and bifrequency, which traditional metasurfaces cannot. This work paves the way for diverse terahertz wavefront manipulations.
SCIENCE CHINA-INFORMATION SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Lin Xiao, Sheng He, Wenkang Cao, Jin Yang, Xuewei Liu, Liting Wu
Summary: This paper proposes amplitude-phase joint coding acoustic metasurfaces (APCMs) that enable simultaneous realization of acoustic wavefront engineering and energy allocation. By adjusting the geometrical parameters of the dual-layer meta-atoms, the reflection amplitude can be continuously controlled and the full reflection phase coverage can be achieved. Two examples are provided to verify the abilities of APCMs, and numerical simulation results confirm their effectiveness.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Qasim Mehmood, Junhwa Seong, Muhammad Ashar Naveed, Joohoon Kim, Muhammad Zubair, Kashif Riaz, Yehia Massoud, Junsuk Rho
Summary: Multi-functional metasurfaces have attracted significant attention in the field of highly integrated and compact meta-devices. This study proposes a tri-functional metasurface based on a single meta-nanoresonator, combining spin-decoupling and intensity modulation to improve information capacity. The proposed design strategy achieves high transmission efficiency in the visible regime and does not add complexity to conventional nano-pillar geometry.
Article
Chemistry, Multidisciplinary
Sunae So, Joohoon Kim, Trevon Badloe, Chihun Lee, Younghwan Yang, Hyunjung Kang, Junsuk Rho
Summary: Metasurface-generated holography is a promising method for reproducing vivid scenes by manipulating light's optical properties using compact devices. However, achieving multiple holographic images with a single metasurface is difficult due to capacity limitations. This study presents an inverse design method using gradient-descent optimization to encode multiple holographic information into a single metasurface. By exploiting this method, multiplane RGB color holograms and 3D holograms are designed and experimentally demonstrated. The research findings demonstrate the high-density holography achievable with a single metasurface, providing a route for practical metasurface-generated holography.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yue Gou, Hui Feng Ma, Liang Wei Wu, Zheng Xing Wang, Peng Xu, Tie Jun Cui
Summary: In this study, a novel Pancharatnam-Berry (PB) coding metasurface composed of spin-decoupled elements is proposed to achieve broadband spin-selective reflections with arbitrary wavefront manipulations. The designed metasurface efficiently reflects the designated circularly polarized wave without reversing the spin state, while suppressing its orthogonally polarized wave through random diffusion. Both simulation and experiment results demonstrate the metasurface's chiral-like characteristics despite being composed of nonchiral meta-elements.
Article
Materials Science, Multidisciplinary
Yifan Jiang, Wenwei Liu, Zhancheng Li, Duk-Yong Choi, Yuebian Zhang, Hua Cheng, Jianguo Tian, Shuqi Chen
Summary: Optical chirality, which plays an important role in physical photonics, biochemical processes, and molecular recognition, has recently been manipulated through the asymmetric optical responses of chiral nanostructures. This study introduces a design strategy to achieve spin-selective coding metasurfaces using amorphous silicon resonators with C-2 symmetry. The chiral coding metasurface allows for significant chiral transmission and wavefront control, expanding the information capacity in optical systems for both linear and nonlinear regimes.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yaqi Feng, Mi Li
Summary: Mechanical cues have a significant impact on physiological and pathological processes, and atomic force microscopy (AFM) has emerged as an essential tool for measuring the mechanical properties of individual cells. This study presents the integration of AFM and micropipette micromanipulation, enabling precise three-dimensional manipulations and nanomechanical measurements of living cells. The study demonstrates the potential of micropipette-assisted AFM for understanding the mechanical cues involved in cellular processes and advancing the field of mechanobiology.
Article
Optics
Zile Li, Renyuan Ren, Juan Deng, Liangui Deng, Gongfa Li, Guoxing Zheng
Summary: This study demonstrates the use of metasurfaces for tri-channel polarization multiplexing in three non-orthogonal-polarization states with a single-size nanostructure design approach, enabling the modulation of incident light intensity pixel-by-pixel. By controlling the polarization combinations and orientation angles of nanostructures, continuous gray-images and independent binary-patterns can be recorded simultaneously. The proposed gray-imaging meta-device offers high information density, security, compatibility, and compactness, making it promising for applications in optical storage, anti-counterfeiting, and information multiplexing.
Article
Engineering, Civil
Jianing Wang, Jiali Cheng, Jianlin Chen, Zheng Li, Bing Li
Summary: This study demonstrates a design strategy to solve the problem of low tunable degrees of freedom in elastic metasurfaces, using magnetic-building-blocks to achieve high degrees of freedom and enable tunable elastic-wave control of higher-order diffractions. An equivalent model is established to theoretically present the transmittance profiles with frequency and building-block height. Various tunable scenarios, including anomalous refractions, controllable higher-order diffraction modes, switchable asymmetric propagation, and digitally programmable vibration-isolation, are numerically and experimentally evaluated. This design serves as an enriched strategy for tunable vibration and wave steering.
ENGINEERING STRUCTURES
(2023)
Article
Optics
Kuixian Chen, Zhiqiang Guan, Zile Li, Yan Yang, Zhixue He, Shaohua Yu, Guoxing Zheng
Summary: In this study, computer-generated holographic nanoprinting using Pancharatnam-Berry phase modulation is demonstrated. This technique combines the advantages of both spectrum-modulated and polarization-modulated nanoprinting while avoiding their disadvantages. It enables single-channel/multichannel/color nanoprinting in a holography way, with unique characteristics such as incoherent light illumination, arbitrary brightness modulation, polarization insensitivity, and zero-dispersion. The holographic interference pattern generation further enhances the safety of information delivery.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Jiaxin Li, Zhiqiang Guan, Hong-Chao Liu, Zhixue He, Zile Li, Shaohua Yu, Guoxing Zheng
Summary: This study proposes a cryptographic system based on indirect-observation decryption, which can decode hidden information by combining special decryption devices and metasurface-transformed ciphertext, ensuring high confidentiality. In addition, an anti-counterfeiting label is designed to ensure information authenticity. This work bridges the gap between metasurfaces and other light-manipulation elements, nanoprint, hologram, and amplitude- and phase-modulated information, providing a new approach for constructing cryptographic systems and promoting the exploration of optical multiplexing and steganography.
LASER & PHOTONICS REVIEWS
(2023)
Article
Thermodynamics
Md. Uddin, Halim Gurgenci, Alex Klimenko, Zhiqiang Guan
Summary: This study used CFD to investigate turbulent flow heat transfer in a high-speed turbine rotor shaft cooling passage using supercritical CO2 as the coolant. The study examined coolant temperature, heat transfer coefficient, convection and frictional heat transfer, as well as the effects of clearance, mass flow rate, shaft rotational speed, and shaft temperature. The results showed that coolant temperature and heat transfer coefficient were not affected by radial clearance, while mass flow rate had a significant effect on coolant temperature. The study also found that convection heat transfer was significantly higher than frictional heat transfer, indicating the dominance of convection heat transfer in achieving effective cooling using supercritical CO2 fluid in the annulus passage. There was some disparity between the predicted heat transfer quantity using correlation and the CFD results.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Chemistry, Multidisciplinary
Xiao Liang, Zhou Zhou, Zile Li, Jiaxin Li, Chang Peng, Hao Cui, Kai Wei, Zhixue He, Shaohua Yu, Guoxing Zheng
Summary: A minimalist strategy for designing multiplexed differentiators is proposed using a Malus metasurface consisting of single-sized nanostructures, enabling 1st and 2nd order differentiations. The proposed meta-differentiator exhibits excellent differential-computation performance and can be used for simultaneous outline detection and edge positioning of objects. It opens up possibilities for all-optical multiplexed computing meta-devices and can be applied in advanced biological imaging, defect detection, and pattern recognition.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Biao Huang, Yiyao Ge, An Zhang, Shangqian Zhu, Bo Chen, Guanxing Li, Qinbai Yun, Zhiqi Huang, Zhenyu Shi, Xichen Zhou, Lujiang Li, Xixi Wang, Gang Wang, Zhiqiang Guan, Li Zhai, Qinxin Luo, Zijian Li, Shiyao Lu, Ye Chen, Chun-Sing Lee, Yu Han, Minhua Shao, Hua Zhang
Summary: A seeded method is developed to synthesize hollow PdSn intermetallic nanoparticles (NPs) with two different intermetallic phases, orthorhombic Pd2Sn and monoclinic Pd3Sn2. The obtained hollow orthorhombic Pd2Sn NPs exhibit excellent electrocatalytic performance towards glycerol oxidation reaction, surpassing solid orthorhombic Pd2Sn NPs, hollow monoclinic Pd3Sn2 NPs, and commercial Pd/C. The reaction mechanism using the hollow orthorhombic Pd2Sn catalyst is investigated, revealing its higher efficiency in cleaving the C-C bond compared to commercial Pd/C.
ADVANCED MATERIALS
(2023)
Article
Cell Biology
Zhiyuan Guan, Xiao Jin, Zhiqiang Guan, Shengfu Liu, Kun Tao, Liying Luo
Summary: This study analyzed the protective effect of gut microbiota and its metabolite capsiate (CAT) on ferroptosis-relative osteoarthritis. The results showed that CAT inhibited the expression of HIF-1a and reduced the progression of ferroptosis-relative osteoarthritis by activating SLC2A1.
Article
Optics
Kuixian Chen, Zile Li, Zhiqiang Guan, Jiaxin Li, Qi Dai, Rao Fu, Liangui Deng, Hao Cui, Guoxing Zheng
Summary: Due to its unprecedented wavefront shaping capability, metasurface has demonstrated outstanding performance in various applications, especially in printing and holography. Recently, these two functions have been combined into a single metasurface chip to achieve an expanded capability. Inspired by the Jacobi-Anger expansion, a phase-assisted paradigm called Bessel metasurface has been proposed for simultaneous printing and holography. The Bessel metasurface, with its compactness, easy fabrication, convenient observation, and liberation of the illumination conditions, is expected to have promising prospects in practical applications.
Article
Chemistry, Physical
Wenjun Zhang, Jae Won Choi, Sooyeon Kim, Thao Thi Le, Subhajit Nandy, Chang-Kyu Hwang, Sae Yane Paek, Ayeong Byeon, Keun Hwa Chae, Seung Yong Lee, Sang Hoon Kim, Hakhyeon Song, Jaehoon Kim, Jihun Oh, Jae W. Lee, Sang Soo Han, Jong Min Kim
Summary: By fine-tuning the coordination environment, a Co-N5-O-C catalyst with highly coordinated Co-N5 moieties and nearby electro-withdrawing epoxides was developed for efficient oxygen reduction reaction (ORR). This catalyst achieved optimal binding energy of *OOH intermediate, resulting in ultrahigh mass activity of 87.5 A g-1 and high H2O2 production rate of 11.3 mol g-1 h-1. It also enabled 100% degradation of organic methylene blue pollutant within 15 minutes through the electro-Fenton process, providing a new direction for on-site H2O2 synthesis and wastewater treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Ophthalmology
Yuancun Li, Hongxi Wang, Zhiqiang Guan, Chengyao Guo, Pi Guo, Yali Du, Shengjie Yin, Binyao Chen, Jiao Jiang, Yueting Ma, Liu Jing, Yingzi Huang, Ke Zheng, Qian Ma, Ruiqing Zhou, Min Chen, Nathan Congdon, Kunliang Qiu, Mingzhi Zhang
Summary: This study aimed to assess the global burden and economic inequalities in the distribution of blindness and vision loss between 1990 and 2019. The results showed that countries with middle and low-middle socio-demographic index (SDI) were the most successful in decreasing the burden of blindness and vision loss. However, a high level of cross-national health inequality persisted over the past three decades. More attention must be paid to eliminating avoidable blindness and vision loss in low-income and middle-income countries.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jin Tao, Quan You, Chao Yang, Zile Li, Liangui Deng, Mian Wu, Ming Luo, Lin Wu, Chao Li, Zichen Liu, Zhixue He, Xi Xiao, Guoxing Zheng, Shaohua Yu
Summary: A bidirectional multichannel optical wireless system enabled by a polarization independent metasurface with coherent modulation and reception is designed and experimentally demonstrated in this study. The system provides exclusive 100 Gbps coherent optical signal transmission to multiusers with their own wavelengths, at a distance of 2 meters and a field of view of 20 degrees x 20 degrees. Additionally, the system supports a 900 Gbps optical broadcasting system. This metasurface assisted optical wireless communication system combines optical coherent communication techniques with the concept of metasurface, reducing system complexity and cost while achieving high transmission capacity and opening new possibilities for high performance optical wireless communications.
Article
Nanoscience & Nanotechnology
Xianjing Huang, Dong Zhu, Zhou Zhou, Kuixian Chen, Guoxing Zheng, Peng Chen, Yan-Qing Lu, Zile Li
Summary: Traditional holographic encryption methods based on the combination of gratings and liquid crystals (LCs) cannot provide full security due to the lack of strict requirements for decoding methods. In this paper, a simple but effective encryption method is proposed, and a four-in-one hologram based on photopatterned LCs is designed. The most important encrypted image can only be displayed when the four LC holograms in the same group are spliced into a whole according to the designed order. Our encryption scheme has the advantages of simple design, high security, and low crosstalk, with great potential in the fields of information hiding and image encryption.
