Article
Optics
Jin Yao, Jun-Yu Ou, Vassili Savinov, Mu Ku Chen, Hsin Yu Kuo, Nikolay Zheludev, Din Ping Tsai
Summary: This work experimentally demonstrates the high sensitivity of a plasmonic anapole metamaterial sensor to the refractive index of the environment in the optical part of the spectrum. The results show promising potential for applications in biosensing and spectroscopy.
Article
Materials Science, Multidisciplinary
Daoye Zheng, Yao Wen, Xiaocan Xu, Yu-Sheng Lin
Summary: We propose and demonstrate a metamaterial grating sensor composed of gold nanograting on a silver thin-film and encapsulated with a PDMS microfluidic chip. The sensor is sensitive to the wavevector of incident light and exhibits angle-dependent reflection spectra, with resonance peaks showing blue-shifts when isopropyl alcohol and deionized water solutions are injected. The reflected color also changes with different solutions in the ambient light environment.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Zen A. Sbeah, Rammani Adhikari, Vishal Sorathiya, Diksha Chauhan, R. S. Ponomarev, Ram Prakash Dwivedi
Summary: This paper presents a plasmonic metamaterial sensor utilizing an I-shaped gold resonator. The sensor is simulated using the finite-element method (FEM) to detect gas and liquid (ethanol solutions) in the infrared wavelength range of 0.5-2.5 & mu;m. The design exhibits distinct absorption characteristics across the range of 0.5-2.5 & mu;m, tailored for different gas and liquid sensing applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yashar E. Monfared, Montasir Qasymeh
Summary: The paper presents a graphene-assisted plasmonic metamaterial absorber for ultra-compact optical gas sensing in the infrared region. The proposed sensor shows high spectral sensitivity and detection limit, with the ability to monitor low concentrations of various gases. This relatively easy-to-fabricate metamaterial configuration can be applied in different applications for environmental and home safety monitoring systems.
RESULTS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
Shahzad Anwar, Maaz Khan
Summary: A highly sensitive refractive index (RI) sensor based on perfect metamaterial absorber (PMA) in the terahertz region is designed. The absorber, formed of metal dielectric metal layered, exhibits two resonance peaks with absorption rates of 99.6% and 99.7%. The near-field distribution analysis investigates the physical origin of the two band absorber. The proposed sensor design achieves high sensitivity (0.86 THz/RIU) and figure of merit (61.8), surpassing previous work in the terahertz region. The RI sensor design is suitable for biomedical sensing applications, including cancerous cell detection, within the RI range of 1.35 to 1.402.
Article
Chemistry, Physical
S. Simitha, Devika Mohan, Shinto M. Francis, Ajith Ramachandran, Jesly Jacob, Vibin Ipe Thomas
Summary: A dual channel sensor based on silver nanostructures was proposed for simultaneous detection of magnetic field and temperature. By optimizing the structural parameters and channel size, the sensitivity of both temperature and magnetic field was enhanced. Additionally, the detection of a single parameter was achieved by placing materials in both channels.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Harbinder Singh, Amit Gupta, Rajinder Singh Kaler, Surinder Singh, Amoljit Singh Gill
Summary: The research explores the sensing properties of an ultrathin metamaterial absorber for refractive index detection in biomedical samples. The absorber, made up of a unique spanner resonator, exhibits high absorption efficiency and excellent sensitivity. It has the potential to detect samples with similar refractive indices, making it a promising candidate for biosensor applications.
IEEE SENSORS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yuwei Liu, Daoye Zheng, Peiyu Chen, Qiuxiao Feng, Yu-Sheng Lin
Summary: In this study, an electrothermally controllable electric split-ring resonator (eSRR) design was proposed for refractive index sensing applications, exhibiting dual or triple resonance characteristics and great potential for future tunable devices and RI sensors.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Crystallography
Shruti, Sasmita Pahadsingh, Bhargav Appasani, Avireni Srinivasulu, Nicu Bizon, Phatiphat Thounthong
Summary: This research investigates a refractive index reconfigurable terahertz metamaterial absorber for gas sensing applications. The absorber displays positive permittivity and negative permeability, and its absorption spectrum reconfigures with changes in the surrounding medium's refractive index. The design, optimized through finite element method analysis, shows insensitivity to polarization angles and high sensitivity for detecting harmful gases.
Article
Materials Science, Multidisciplinary
Hongyang Shen, Chunyang Liu, Fengxiang Liu, Yaqi Jin, Banghong Guo, Zhongchao Wei, Faqiang Wang, Chunhua Tan, Xuguang Huang, Hongyun Meng
Summary: A multi-band absorber based on a hybrid metal-graphene metasurface is proposed for detecting surrounding refractive index, achieving high absorption rates and sensitivities. The structure allows for flexible adjustment of absorption peaks and can be used as a refractive index sensor.
RESULTS IN PHYSICS
(2021)
Article
Optics
Giacomo Manzato, Maria Caterina Giordano, Matteo Barelli, Debasree Chowdhury, Marco Centini, Francesco Buatier de Mongeot
Summary: Flat optics nanogratings supported on thin free-standing membranes combine narrowband waveguided modes and Rayleigh anomalies for sensitive and tunable biosensing. Sharp waveguided modes and lattice resonances were achieved on high-refractive index Si3N4 membranes using lithographic nanogratings based on plasmonic nanostripes. These optical modes were fine-tuned over a broadband Visible and Near-Infrared spectrum, supporting strong near-field amplification and enabling versatile biosensing applications.
Article
Multidisciplinary Sciences
Sagnik Banerjee, Purba Dutta, Snehashish Basu, Sunil Kumar Mishra, Bhargav Appasani, Sarita Nanda, Yadgar I. Abdulkarim, Fahmi F. Muhammadsharif, Jian Dong, Amitkumar V. Jha, Nicu Bizon, Phatiphat Thounthong
Summary: A novel design of a terahertz metamaterial absorber is proposed, which can sense the variations in the refractive index of the surrounding medium. The absorber achieves nearly perfect absorption at 2.905 terahertz with a quality factor of 145.25. It exhibits high sensitivity to changes in the refractive index, making it suitable for gas sensing applications.
Article
Physics, Applied
J. D. Ortiz, J. P. del Risco, J. D. Baena, R. Marques
Summary: The paper proposes an extension of Babinet's principle for plasmonic metasurfaces by redefining the concept of complementary screens and finding impedance relations, leading to a simple relation between the transmission matrices of two complementary plasmonic metasurfaces. The theory is valid under the assumptions of the electroquasistatic approximation and plane waves in the far field, with potential applications in the design of optical plasmonic metasurfaces, nanocircuits, and nanoantennas.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Atefeh Chahkoutahi, Farzin Emami
Summary: This paper presents four sensitive metamaterial absorbers designs based on graphene-plasmonic combinations, optimizing absorption characteristics such as peak value and wavelength. The structures exhibit distinct wavelength ranges and can be used as refractive index biosensors with acceptable sensitivities.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Optics
Ayda Aray, Saeed Ghavami Sabouri
Summary: The study presents a detailed design of a plasmonic refractive index sensor based on a metal-insulator-metal Bragg microcavity, utilizing high field confinement and resonant assisted multiple-pass of plasmonic waves to enhance sensing performance. By investigating the effect of structural parameters on plasmonic spectral properties, the sensor performance can be optimized with great significance.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Chemistry, Physical
Hao-Bo Guan, Meng-Xin Ren, Rui Zeng, Tao Qin, Sheng-Guang Wang, Yun-Lei Hou, Dong-Lin Zhao
Summary: With the increasing demand for energy storage technology, developing battery systems with higher energy density is urgent. In this study, Si@Cu nanoparticles with core-shell structures enclosed in a 3D CNTs network were synthesized to overcome the limitations of Si, such as large volume variation and low conductivity. The synergistic effects of Cu coating and the 3D CNTs network resulted in improved electrochemical performance and capacity retention. Si@Cu/CNTs exhibited a high capacity and favorable rate capability, making it a promising modification strategy for Si materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Jie Zhao, Liang Liang, Shiyi Tang, Guangqi Zhang, Yi Su, Yuxin Zhao, Mengjuan Li, Lina Zhang, Shoushan Fan, Qunqing Li, Yang Wei
Summary: Low-dimensional materials like graphene are revolutionizing in situ TEM characterization. A new graphene microheater chip was developed, which can be heated up quickly with low power consumption and minimal expansion. The chip's potential in resolving thermodynamic processes was demonstrated through TEM observation of the melting process of Sn. This work opens up new possibilities for graphene and in situ characterization techniques.
Article
Optics
Jiang Fan, Zhiguo Sun, Yao Lu, Weiwei Luo, Mengxin Ren, Wei Cai, Jingjun Xu
Summary: This study proposes two types of one-dimensional crystals that support propagating acoustic graphene plasmons (AGPs) with different topological properties. By combining these crystals to form a superlattice system, super-modes are observed due to the coupling between isolated topological interface states. A flat dispersion of super-modes is observed by designing the superlattice. These results have potential applications in optical sensing and integrated photonic devices.
Article
Materials Science, Multidisciplinary
Zhenxin Wang, Lufang Liu, Di Zhang, Alexey V. Krasavin, Junsheng Zheng, Chenxinyu Pan, Enxing He, Zifan Wang, Shengchengao Zhong, Zhiyong Li, Mengxin Ren, Xin Guo, Anatoly V. Zayats, Limin Tong, Pan Wang
Summary: The effect of mirror quality on the optical response of nanocavities is studied. It is found that nanocavities formed on smooth metal mirrors have better cavity-to-cavity homogeneity and scattering intensity, while rough metal mirrors result in changes in the spectral positions of resonance modes.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Guangqi Zhang, Gaotian Lu, Xuanzhang Li, Zhen Mei, Liang Liang, Shoushan Fan, Qunqing Li, Yang Wei
Summary: This research uses air-gap barristors to solve the challenges of realizing reconfigurable polarity control and rectification in simplified device structures for ambipolar nanomaterials. By adjusting the air gap around the bottom electrode, the Schottky barrier is widened, blocking the injection of both electrons and holes. The 2D ambipolar channel of WSe2 can be reconfigured as an n- or p-type unipolar transistor and can also function as a switchable diode. By optimizing the electrode materials, the electrical performances can be improved, achieving an on/off ratio of 104 for the transistor and a rectifying ratio of 105 for the diode. Air-gap barristors are used as building blocks to construct a complementary inverter and a switchable AND/OR logic gate, providing an efficient approach for low-dimensional reconfigurable electronics.
Article
Physics, Applied
Zhidong Gu, Haiyun Tan, Jiaxin Peng, Jiaxin Chen, Di Zhang, Fei Xie, Wei Wu, Wei Cai, Mengxin Ren, Jingjun Xu
Summary: In this study, an electro-optically tunable metasurface mediated by topological corner states is reported. The metasurface is constructed using two kinds of finite-sized arrays with different topological properties based on the two-dimensional Su-Schrieffer-Heeger model. The results demonstrate a narrow-linewidth resonance with high-quality factor and strong field localization, making it suitable for electro-optical modulation.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Fei Xie, Mengxin Ren, Wei Wu, Wei Cai, Jingjun Xu
Summary: By using the 90 degrees-crossing point of the optical rotation spectral curve as the sensing signal, the figure of merit (FoM) can be greatly improved, enabling convenient and high-precision tracking of spectral shifts from raw data. This approach provides a way for constructing metasurface refractive index sensors.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Jing-Zhou Chen, Meng-Xin Ren, Yun-Lei Hou, Bo-Han Zhang, Wan-Xin Wen, Hua-Ying Wang, Dong-Lin Zhao
Summary: To address issues of volume expansion, poor silicon conductivity, and capacity decay, a rational design of the silicon negative electrode is crucial. In this study, a graphene confined Si@Cu core-shell structure (Si@Cu@rGO) was developed as an integrated anode. The copper shell on the silicon nanosurface enhances electronic conductivity, while the flexibility of the copper shell and graphene helps maintain electrode morphology and contact. Additionally, the graphene cladding prevents nanoparticle aggregation and provides space for silicon expansion, while the three-dimensional redox graphene layer accelerates reaction kinetics. The Si@Cu@rGO exhibited satisfactory electrochemical performance, with a specific capacity of 2243.1 mAh g(-1) after 70 cycles in the rate performance test. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Mengjuan Li, Zhenlei Wang, Yuanhao Jin, Haitao Yang, Lihui Zhang, Huijuan Li, Jiaping Wang, Shoushan Fan, Qunqing Li
Summary: In this study, a novel and cost-effective method for preparing one-dimensional TiO2 nanowire arrays using a super-aligned carbon nanotube film as a template is reported. Pure anatase-phase TiO2 nanowires were synthesized on a flexible substrate, leading to a high-performance UV photodetector with a large surface area and one-dimensional nanostructure. The TiO2 nanowire array exhibited a high detectivity (1.35 x 10(16) Jones) and an ultrahigh photogain (2.6 x 10(4)), as well as a high photoresponsivity of 7.7 x 10(3) A/W, which is significantly higher than that of commercial UV photodetectors. Furthermore, the TiO2 nanowire array demonstrated polarized photodetection due to its anisotropic geometry. The use of nanomaterial systems shows great potential for practical applications in nanostructured photodetectors.
Review
Optics
Mengxin Ren, Jingjun Xu, Pengfei Lan, Peixiang Lu, Zhi-Yuan Li, Li-Hong Hong, Yulei Wang, Zhenxu Bai, Zhiwei Lv, Zhi-Yuan Zhou, Bao-Sen Shi, Yong Zhang, Shining Zhu, Min Xiao, Satoshi Aya, Yan-qing Lu, Huixin Fan, Min Luo, Ning Ye, Zeyuan Sun, Wei-Tao Liu, Shiwei Wu, Qingyun Li, Hui Hu, Yuanlin Zheng, Xianfeng Chen, Xiaoyong Hu, Chuanshan Tian, Zixian Hu, Guixin Li, Yi Hu, Kun Huang, Heping Zeng, Zhen-Ze Li, Hong-Bo Sun, Lei Dong, Runfeng Li, Wenkai Yang, Kebin Shi
Summary: In nonlinear optical systems, the optical superposition principle does not hold and the system's response is not proportional to the stimulus it receives. Nonlinear optics has become an important academic field, bringing new physics and phenomena, and enabling technologies vital to our lives such as communications and advanced manufacturing. This Roadmap provides an overview of emerging fields in nonlinear optics, with a focus on research in China, highlighting current and future challenges, as well as exciting opportunities for research and development.
JOURNAL OF PHYSICS-PHOTONICS
(2023)
Article
Optics
Chunyan Jin, Chenxiong Wang, Lun Qu, Di Zhang, Qiang Liu, Jingfei You, Dahuai Zheng, Wei Wu, Wei Cai, Mengxin Ren, Jingjun Xu
Summary: This study introduces fast LN photodetectors that utilize defect energy states within the forbidden band of LN, resulting in enhanced response speeds compared to previous pyroelectric LN PDs. The research also investigates the performance dependencies of the photodetectors, such as electrode gap, external driving voltage, illumination power, and impurity dopants, aiming to further the development of high-performance LN PDs for integrated LN photonic chips.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Yaoyao Liu, Shuming Jiang, Xu Zhou, Chengtao Xia, Qiang Wu, Xiangyang Ma, Lu Chen, Jianghong Yao, Jingjun Xu
Summary: This study achieved high-concentration F-doped ZnO thin films with high transparency and Hall mobility for the first time via femtosecond-laser hyperdoping. The highest atomic percentage of F reached 8.3 at.%, which was over three times larger than previous reports. The F-doped ZnO showed a significant increase in carrier concentration and decrease in resistivity compared to pristine ZnO. This technology can reduce power dissipation and improve current carrying capacity of ZnO-based devices.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Yuxin Zhao, Yuanhao Jin, Xing Wang, Jie Zhao, Sanming Wu, Mengjuan Li, Jiaping Wang, Shoushan Fan, Qunqing Li
Summary: This article reports a lateral memristor with high-linearity analog resistive switching behavior based on a large-scale atomic layer deposition (ALD) synthesized MoS2 film. The stable analog resistive switching behavior of the device is modulated by lateral conductive filaments formed reproducibly by electric field-induced oxidation, which overcomes the dependence on randomly occurring grain boundaries in conventional lateral memristors. The device exhibits high linear weight update behavior and low power consumption, making it suitable for large-scale integrated neuromorphic circuit applications. This study demonstrates a new resistive switching phenomenon in lateral 2D material devices and shows the potential of ALD-synthesized MoS2 as a scalable fabrication method for neuromorphic computing devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Pengfei Zhu, Di Zhang, Xin Niu, Jinchao Liu, Mengxin Ren, Jingjun Xu
Summary: This study proposes an 8-bit quantized lightweight method of neural network analysis to address the convergence and time issues in ellipsometry for thin film characterization. The method utilizes compact neural network modules to enhance speed and efficiency, and has been validated across diverse materials. It offers an automated and lightweight solution for balancing predictive accuracy with limited computational resources.
ADVANCED OPTICAL MATERIALS
(2023)
