Article
Materials Science, Multidisciplinary
Tahmid Mahbub, Qazi Mahabub-A-Rabbani, Sakib Mahmud, Rakibul Hasan Sagor
Summary: In this article, an optical refractive index (RI) nanosensor based on a metal-insulator-metal (MIM) waveguide configuration with gold as the plasmonic metal has been presented. The structure includes quintuple grids resonant cavity with uneven grid lengths for enhanced performance. Numerical analysis using the finite element method (FEM) in the mid-infrared region (MIR) shows that the optimized structure exhibits high sensitivity of 4737.87 nm/RIU and a figure of merit (FOM) of 9.37. The device can be used for sensing organic gas vapors and temperature applications, providing a practical and simplified alternative to complex structures.
RESULTS IN PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Ruhao Pan, Jianyu Kang, Yutong Li, Zhongshan Zhang, Renfei Li, Yang Yang
Summary: This study proposes a feasible method to prepare MoS2-based plasmonic hybrid systems and systematically investigates the enhancement effect of Ag SPs on the PL emission of MoS2. The results demonstrate that the sandwich-like hybrid system composed of monolayer MoS2 and two layers of Ag SPs with an Al2O3 layer between them achieves the highest PL enhancement.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Xinxin Gao, Bao Jie Chen, Kam-Man Shum, Qian Ma, Wen Yi Cui, Tie Jun Cui, Chi Hou Chan
Summary: The next-generation wireless communications and intrachip and interchip communications require high-speed terahertz (THz) interconnects, which can be achieved using spoof surface plasmon polaritons (SSPPs). This study proposes and experimentally demonstrates planar multifunctional THz plasmonic devices based on the interaction between SSPPs and spoof localized surface plasmon (SLSPs). These devices enable pass-through transmission, multifrequency resonances, and phase shift in THz plasmonic systems, making them promising for on-chip integrations, wireless communications, and sensing systems.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Optics
Yihua Bai, Jiadian Yan, Haoran Lv, Yuanjie Yang
Summary: This review summarizes the fundamental concepts of plasmonic vortices and highlights recent advances in the generation and applications of plasmonic vortices at lightwave, microwave, and Terahertz frequencies.
Article
Physics, Applied
Xuewei Zhang, Shaobin Liu, Kun Liao, Jian Lou
Summary: In this paper, a novel ultra-wideband high-efficiency bandpass filter based on a surface plasmonic waveguide (SPW) is proposed. By using glide symmetry technology, the filter achieves higher propagation constant and efficient transmission. A prototype has been manufactured and measured, showing good agreement with simulations.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Martin Thomaschewski, Vladimir A. Zenin, Saskia Fiedler, Christian Wolff, Sergey I. Bozhevolnyi
Summary: This study utilizes plasmonics to achieve the most efficient lithium niobate Mach-Zehnder modulator (MZM) to date. By guiding plasmonic modes and controlling their relative optical phase delay with electrical signals, efficient electro-optic modulation is achieved. The proposed MZM operates near its quadrature point to ensure high linearity.
Article
Optics
Yulu Qin, Boyu Ji, Xiaowei Song, Jingquan Lin
Summary: The study achieved ultrafast spatiotemporal control of the launch direction of SPP through a plasmonic nano directional coupler; experimental results showed that the extinction ratio of the SPP directional coupler can be optimized by adjusting the amplitude and time delay of the incident light pulses; by adjusting the polarization state of the excitation light, the launch direction of the SPP field can be switched on the femtosecond timescale.
PHOTONICS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Desheng Qu, Qiaohua Wu, Yiping Sun, Chunlei Li
Summary: In this paper, a metal-insulator-metal waveguide coupled with double Fibonacci spiral structure is designed and studied. The Fano resonance characteristics of the structure are analyzed in detail by means of transmission spectra and magnetic field distribution using finite element method. By changing the geometric parameters and refractive index, the sensing characteristics of the structure are quantitatively analyzed. This structure can be used in sensors, not only the sensitivity can reach an extremely high value of 3350 nm/RIU, but also the refractive index and peak wavelength show an excellent linear relationship. This structure provides a new scheme for the design of high sensitivity sensors. In addition, by measuring the refractive index of sodium chloride solution, it is proved that the structure has practical application prospect.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2023)
Article
Optics
Huibo Fan, Ruijuan Chang, Arui Wang, Xinrui Chen
Summary: In this paper, we propose and analyze tunable Fano resonance based on indirect interaction between two Taiji resonators. By tailoring the propagating modes in the Taiji resonator, the number of whispering-gallery modes can be varied, leading to convenient tuning of Fano resonance lineshape. The use of monolayer graphene and UV-glue enables all-optical tuning and high-sensitivity temperature sensing, respectively.
OPTICS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Mohammad Rakibul Islam, A. N. M. Iftekher, Mariea Sharaf Anzum, Muntaha Rahman, Sadia Siraz
Summary: The sensor proposed in this paper utilizes gold and aluminium doped zinc oxide as plasmonic materials, displaying a unique dispersion relation with double resonance peaks, high sensitivity and resolution, as well as the ability to detect analytes within a wide range of refractive indices. A new parameter, double peak sensitivity, has been introduced to evaluate the sensor's performance.
IEEE SENSORS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Chandan Singh, Matthias Thiele, Andre Dathe, Sophie Thamm, Thomas Henkel, Gajjala Sumana, Wolfgang Fritzsche, Andrea Csaki
Summary: A two-step process involving extraction and exchange reactions was used to immobilize gold nanocubes on a glass surface, resulting in improved sensitivity for microfluidic sensing of glucose concentrations.
Article
Physics, Applied
Ying Chen, Jinggang Cao, Yangmei Xu, Xinbei Gao, Jinchao Xie
Summary: The proposed metal-dielectric-metal (MDM) waveguide coupled disk cavity structure with bimetallic baffle utilizes Fano resonance to achieve high sensitivity refractive index sensing characteristics. By optimizing geometry parameters and filling the absorption material InGaAsP, the structure can achieve a high figure of merit. This structure has potential applications for nanosensors, slow-light devices, and nano-optical switches.
MODERN PHYSICS LETTERS B
(2021)
Article
Chemistry, Physical
Panpan Chen, Cong Chen, Jianxin Xi, Xiang Du, Li Liang, Jiajia Mi, Jianping Shi
Summary: This research presents a multi-directional SPP splitter and polarization analyzer based on the catenary metasurface, which efficiently splits light of four different polarization states. The device operates at a central wavelength of 632 nm with an operation bandwidth of up to 70 nm. By incorporating photodetectors and dynamic polarization modulation techniques, this device can serve as a router or switch in integrated photonic circuits.
Article
Chemistry, Multidisciplinary
Yi Ren, Jingjing Zhang, Xinxin Gao, Xin Zheng, Le Peng Zhang, Tie Jun Cui
Summary: In this paper, a general method for impedance matching in the design of miniaturized spoof plasmonic antennas based on SSPPs is proposed. A prototype of a planar spoof plasmonic dipole antenna is simulated, fabricated, and measured to verify the effectiveness of the method. The results show significant improvements compared to traditional dipole antennas.
Article
Optics
Junxiong Chai, Yiyuan Xie, Liangyi Zhang, Yichen Ye, Bocheng Liu, Xiao Jiang, Rong Yang, Jing Tan
Summary: A plasmonic device with multifunctions of filtering and switching is proposed in this paper, achieving filtering and switching functions with reduced signal distortion and low passband ripple. This device has a significant impact on improving the quality of signals on chips.
OPTICS AND LASER TECHNOLOGY
(2023)
