Article
Engineering, Electrical & Electronic
Jing Chen, Chun Yang, Ping Gu, Yihan Kuang, Chaojun Tang, Siyu Chen, Zhengqi Liu
Summary: The study introduces a method to enhance the sensing properties of a 3D metamaterial sensor by combining magnetic plasmon resonance and a dielectric waveguide. The hybrid magnetic plasmon resonance formed by vertical split ring resonators and a propagating optical waveguide mode results in high sensitivity and figure of merit, making it suitable for label-free biosensing applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yizhe Liu, Fei Pan, Feng Xiong, Yuling Wei, Yicheng Ruan, Bin Ding, Kuijian Yang, Yuli Chen
Summary: This study proposes a class of 2D and 3D chiral mechanical metamaterials based on prestressed bistable metallic shells, which enables fast shape-reconfiguration with large morphing amplitude, high energy-efficiency, and ultrafast speed. The metamaterials can transform from an extended state to a rolled-up state at a transitional speed of 7.56 m/s, resulting in 25.38- and 101.14-times body area/volume variation per second for 2D and 3D metamaterials, respectively. Additionally, smart trapper and phononic structures with tunable band gaps are achieved based on these metamaterials. This work provides a straightforward platform for designing metamaterials and their derived systems with ultrafast and large-amplitude shape-reconfigurability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Changlong Hao, Chuanlai Xu, Hua Kuang
Summary: This article provides an overview of recent advances in chiral nanomaterials for biosensing applications, including individual chiral nanoparticles, chiral assemblies, and chiral 2D film-based sensors.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Mechanical
Jianlin Yi, Jiaxin Long, Chang Qing Chen
Summary: This study proposes a reconfigurable electromechanical metamaterial with first-order and second-order topological states for controlling elastic waves. The topology of the metamaterial can be reconfigured by switching the connected circuits and changing electrical parameters, and its potential applications in waveguide design are demonstrated.
EXTREME MECHANICS LETTERS
(2023)
Article
Optics
Min Zhang, Danni Hao, Shuai Wang, Rui Li, Shou Wang, Yanqing Ma, Ramiro Moro, Lei Ma
Summary: This paper reports a subwavelength chiral metamaterial structure with tunable geometries and compositions for chiral biochemical sample detection. The chiroptical response of the metamaterial can be adjusted by manipulating the number of stacking layers and the twisted angle of the periodic unit. Experimental and numerical analysis reveal that the chiroptical response originates from the optical resonances of the gold disks and the adjacent array layers. The chiral metamaterial can achieve label-free detection of proline in biological samples and enantio-discrimination of chiral molecules, and the transmission circular dichroism (TCD) intensity can be regulated by the analyte concentration.
Article
Engineering, Mechanical
Zhonglei Shen, Xiangdong Fang, Shengnan Li, Liuyang Zhang, Xuefeng Chen
Summary: The paper proposes a mechanically reconfigurable and electrically tunable THz chiral metamaterials, demonstrating control of circular dichroism and quarterwave-plate behavior through adjusting folding angle and Fermi energy level of graphene origami.
EXTREME MECHANICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Maxime Pinaud, Georges Humbert, Sebastian Engelbrecht, Lionel Merlat, Bernd M. Fischer, Aurelian Crunteanu
Summary: Chalcogenide phase change materials (PCMs) with broadband responses and nonvolatile and reversible transitions have been investigated for their potential in controlling THz waves. The optical control of specific states of germanium telluride (GeTe) PCM has been demonstrated, showing promise for future optically reconfigurable THz devices with high functionality. Experimentally confirmed all dielectric GeTe-based THz polarizers present broadband responses and high extinction ratios, indicating potential for future disruptive developments in THz wave manipulation.
Article
Chemistry, Multidisciplinary
Zhaolong Cao, Jianfa Chen, Shaozhi Deng, Huanjun Chen
Summary: Understanding the physical origins of chiroptical responses in artificial optically active media is crucial for developing high-performance circular dichroism spectroscopic techniques. In this study, a biorthogonal approach based on temporal coupled-mode theory is presented to explain the underlying physics of chiral metasurfaces. It is found that the intrinsic chirality of coupled chiral nanocavities arises from the asymmetric coupling between interlayer cross-polarized resonant modes and coherent interference between doubly degenerate states.
Article
Chemistry, Multidisciplinary
Yun Chang Choi, Shengsong Yang, Christopher B. Murray, Cherie R. Kagan
Summary: Researchers have reported a thermally reconfigurable chiroptical metamaterial composed of phase change material VO2 and metallic Au nanoparticles. This all-solid-state metamaterial shows dynamic switching in the mid-infrared range and has potential applications in various fields.
Article
Nanoscience & Nanotechnology
Anna Archetti, Ren-Jie Lin, Nathanael Restori, Fatemeh Kiani, Ted Tsoulos, Giulia Tagliabue
Summary: In this work, we present the proof-of-concept design of an ultrathin and thermo-optically reconfigurable silicon metalens. It demonstrates continuous, linear modulation of the focal length and achieves diffraction-limited performance. We propose that combining machine-learning algorithms with further optimization of the meta-atoms can lead to the development of thermally reconfigurable metalenses with improved performance, and this approach could inspire the realization of active metasurfaces with other emerging materials in the field of thermo-nanophotonics.
Article
Chemistry, Multidisciplinary
Cheng Xu, Zhihao Ren, Hong Zhou, Jingkai Zhou, Dongxiao Li, Chengkuo Lee
Summary: This study investigates the impact of near-field coupling on the chirality response of chiral metamaterials. It is observed that strong near-field coupling induces less chiral response, providing evidence for the assumption. The study also demonstrates the use of enhanced near-field coupling for glucose enantiomer sensing and explores the potential of using arrayed metamaterials for broadband signal detection.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Ting Yu Teo, Nanxi Li, Landobasa Y. M. Tobing, Amy Sen Kay Tong, Doris Keh Ting Ng, Zhihao Ren, Chengkuo Lee, Lennon Yao Ting Lee, Robert E. Simpson
Summary: This study demonstrates the influence of (ZnS)(0.8-)(SiO2)(0.2) capping layers on the performance of Sb2S3 and Ag-doped Sb2S3 integrated photonic devices. At least 30 nm of capping material is necessary to protect the material from sulfur loss. The capping layer can be used to tune the PCM crystallization temperature and reduce device footprint.
Article
Optics
Xianhui Fu, Jiwei Qi, Hao Hu, Sihao Zhang, Qiang Wu, Yao Lu, Hao Xiong, Hongjin Wu, Zongqiang Chen, Jing Chen, Xuanyi Yu, Qian Sun, Jingjun Xu
Summary: We propose and experimentally demonstrate the achievement of giant asymmetric reflection of circularly polarized light in single-layer extrinsic chiral metasurfaces based on asymmetric coupling. The asymmetric coupling and reflection are caused by extrinsic chirality, allowing for extremely high values. The research provides an effective method for constructing huge asymmetric coupled systems to manipulate electromagnetic waves.
Article
Nanoscience & Nanotechnology
Chia-Yi Lin, Chi-Ching Liu, Yu-Yu Chen, Kuan-Yu Chiu, Jyun-De Wu, Bo-Lin Lin, Chang-Han Wang, Yang-Fang Chen, Shih-Hui Chang, Yun-Chorng Chang
Summary: A rapid optical method using twisted metamaterial arrays is proposed for chiral drug detection, enabling low-cost and portable chiral detection system. The nanofabrication method significantly improves the capabilities of NLL and HML for fabricating various metamaterials, paving the road for nanophotonics to penetrate pharmaceutical industries efficiently.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Yingying Duan, Shunai Che
Summary: Fabricating chiral inorganic materials and uncovering their quantum confinement-induced optical chiral responses are crucial in various interdisciplinary fields. This review focuses on recent advancements in chiral mesostructured inorganic materials, specifically their mesostructured chirality and optical chiral response, which can inspire new strategies for designing chiral materials beyond traditional applications. Fabrication methods are categorized based on chirality type, scale, and symmetry-breaking mechanisms, with emphasis on systems exhibiting unique optical chiral response for left- and right-handedness.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sander A. . Mann, Heedong Goh, Andrea Alu
Summary: Enabling strong nonlinear optical phenomena requires carefully designed photonic devices to maximize light-matter interactions. Topology optimization has been widely used in optimizing photonic devices due to its efficiency in dealing with large parameter spaces. However, the application of topology optimization in nonlinear effects in dielectric structures is limited.
Article
Nanoscience & Nanotechnology
Nikita Nefedkin, Michele Cotrufo, Andrea Alu
Summary: Nonreciprocity originating from classical interactions among nonlinear scatterers is explored in this work, offering a promising tool for quantum information processing and quantum computing. It is shown that large nonreciprocal responses can be achieved in nonlinear systems by controlling the position and transition frequencies of the atoms, without requiring a nonreciprocal environment. The connection between this effect and the asymmetric population of a slowly decaying dark state is demonstrated.
Article
Chemistry, Multidisciplinary
Mengyu Guan, Yunlong Xie, Yang Zhang, Zixin Gu, Lei Qiu, Zhuojie He, Bingkun Ye, Ady Suwardi, Zhigao Dai, Guogang Li, Guangwei Hu
Summary: Humidity- and moisture-induced degradation has been a longstanding problem in perovskite materials, but a new type of 2D Dion-Jacobson (DJ) perovskite has leveraged moisture to achieve reversible hydrochromic behaviors, improving their long-term stability. By modulating the hydrogen bonds between organic cations and water molecules, the movement of the organic cations is confined to prevent their escape from crystal lattices. The reversible fluorescent transition of these perovskites shows excellent cyclical properties, offering untapped opportunities for reconfigurable optoelectronic applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Jie Fang, Suichu Huang, Kan Yao, Tianyi Zhang, Mauricio Terrones, Wentao Huang, Yunlu Pan, Yuebing Zheng
Summary: Tunable exciton-photon couplings have been demonstrated in monolayer TMDs, showing strong bright-exciton-photon couplings and revealing the novel interactions between bright and dark exciton-photon hybrids in a single optical cavity. The waveguide mode can be tuned in wavelengths by controlling the spacer thickness, and the relative contribution from the antenna mode coupled with dark excitons can be dynamically enlarged by increasing the excitation angle. This study opens new possibilities in tunable QED and provides insights into the coexistence of bright and dark exciton-photon couplings.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Optics
Yuxiang Wang, Yueyi Yuan, Yi Liu, Xumin Ding, Badreddine Ratni, Qun Wu, Shash Nawaz Burokur, Guangwei Hu, Kuang Zhang
Summary: Fourier harmonic component engineering is proposed to allocate energy between multiple diffraction beams, achieving lossless transformation from incidence to far-field patterns with high efficiency. This method is significant for multichannel wireless communication applications and can be easily extended to other frequency regions.
LASER & PHOTONICS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
Chaohui Wang, He-Xiu Xu, Guangwei Hu, Yi Liu, Tong Liu, Kun Wang, Fan Zhang, Shuo Xu, Jian Xu, Zhichao Pang
Summary: Achieving multifunctional wavefront manipulations of waves with a flat and thin plate is important but challenging. In this study, a multifunctional metasurface with spin-decoupled full-space wavefront control is reported by using both linear momentum and frequency degree of freedom. Experimentally demonstrated four-port wavefront manipulations including spin- and frequency-dependent focusing, quad-beam radiation, anomalous reflections, and Bessel beam generation show the potential applications in high-capacity communications and multifunctional radar detections.
Article
Chemistry, Multidisciplinary
Zhihan Chen, Hongru Ding, Pavana Siddhartha Kollipara, Jingang Li, Yuebing Zheng
Summary: Researchers propose a novel optical feedback control system that can mimic collective motion observed in living objects. This system allows for experimental investigation of velocity alignment in a perturbed environment, and spontaneous formation of different moving states and dynamic transitions were observed.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Analytical
Xing Huang, Zihao Li, Yanli Tong, Yanfei Zhang, Taorong Shen, Meng Chen, Zhan Huang, Yakun Shi, Shaoqiang Wen, Si-Yang Liu, Jianhe Guo, Xiaoyong Zou, Zong Dai
Summary: In this study, a DNAzyme-amplified cascade catalytic hairpin assembly (CHA)-based nanosystem (DCC) was engineered to improve the sensitive imaging of microRNAs (miRNAs) in living cells. This nanosystem utilized DNAzyme amplification and CHA activation for enzyme-free amplification. MnO2 nanosheets were used as carriers for nucleic acid probes, protecting them from degradation and providing Mn2+ for the DNAzyme reaction. The DCC nanosystem achieved sensitive and selective miRNA analysis with a limit of detection of 5.4 pM, 18 times lower than the traditional CHA system. This nanosystem holds great potential for miRNA analysis, clinical diagnosis, and other biomedical applications.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jie Fang, Kan Yao, Mingsong Wang, Zhuohang Yu, Tianyi Zhang, Taizhi Jiang, Suichu Huang, Brian A. Korgel, Mauricio Terrones, Andrea Alu, Yuebing Zheng
Summary: In this study, we achieved on-demand exciton-polariton emission from a wide range of TMDs at room temperature by hybridizing excitons with broadband Mie resonances. The system demonstrated stable polaritonic photoluminescence and multiple Rabi splittings.
Article
Materials Science, Multidisciplinary
Mengqi Liu, Weijin Chen, Guangwei Hu, Shanhui Fan, Demetrios N. Christodoulides, Changying Zhao, Cheng-Wei Qiu
Summary: Perfect absorbers that can completely absorb all incoming energy have been extensively studied and found to be associated with topological spectral phase singularities (SPS). The order of the topological invariant depends on the number of degenerate outgoing channels. By examining mirror-backed and all-dielectric structures, the generation, evolution, and annihilation of SPSs with different orders are revealed. A strategy based on charge conservation of SPSs has been established to design dual-band perfect absorbers. These findings highlight the topological origin of perfect absorption and its potential applications in biosensing, topological metasurfaces, and micro/nano thermal radiation.
Article
Chemistry, Multidisciplinary
Xumin Ding, Zihan Zhao, Peng Xie, Dayu Cai, Fanyi Meng, Cong Wang, Qun Wu, Jian Liu, Shah Nawaz Burokur, Guangwei Hu
Summary: This paper presents a novel optical logic operator based on a multifunctional metasurface driven by an all-optical diffractive neural network. It achieves four principal quantum logic operations and demonstrates high fidelities for all four gates.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Marcel Herber, Ana Jimenez Amaya, Nicklas Giese, Bharath Bangalore Rajeeva, Yuebing Zheng, Eric H. Hill
Summary: The printing of layered silicate nanoclays using a laser-directed microbubble was established, and the influence of surface chemistry on the resulting assembly was studied. This work also demonstrated the potential of this method in fabricating ultrasensitive molecular sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Shang-Jie Yu, Helen Yao, Guangwei Hu, Yue Jiang, Xiaolin Zheng, Shanhui Fan, Tony F. Heinz, Jonathan A. Fan
Summary: This study presents hyperbolic polaritonic rulers based on low-dimensional, strongly anisotropic nanomaterials, which exhibit near-field polaritonic characteristics that are highly sensitive to device geometry. Using scanning near-field optical microscopy, the researchers demonstrate the strongly confined image polariton modes supported by these rulers and describe and predict their behavior using a simple analytic model.
