Article
Biophysics
Yunlei Xianyu, Shixuan Su, Jing Hu, Ting Yu
Summary: This study introduces a novel approach for detecting beta-glucuronidase activity by modulating the silver mirror reaction on gold nanostars, leading to a significant change in surface plasmon resonance. This plasmonic nanosensor shows great promise for enzyme detection with a detection limit as low as 0.1 U/L.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Jing Chen, Yihan Kuang, Ping Gu, Simin Feng, Yumeng Zhu, Chaojun Tang, Yanyan Guo, Zhengqi Liu, Fan Gao
Summary: A simple metasurface design with closely spaced Ag nanowires on Ag substrate is proposed for strong magnetic plasmon resonance. The magnetic field intensity and spectral linewidth of the resonance can be tuned by adjusting nanowire height and spacing. The metasurface shows high sensitivity and figure of merit, making it suitable for label-free biosensing applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Emilie Laffont, Nicolas Crespo-Monteiro, Arnaud Valour, Pierre Berini, Yves Jourlin
Summary: A new plasmonic configuration is proposed for a sensor, which can detect the refractive index variations of solutions. This configuration utilizes two diffracted orders resulting from the interaction of a TM-polarized optical beam and a grating coupler, based on the optical switch effect. Experimental results show that the differential measurements from the two monitored diffracted orders cancel out the common drifting and perturbations, leading to an improved detection limit. Bulk sensing is achieved by sequentially injecting solutions of glycerol in water into a fluidic cell using intensity interrogation. The configuration is cost-effective and shows great promise for real-time detection of biological species.
Article
Chemistry, Multidisciplinary
Sayako Maeda, Noboru Osaka, Rei Niguma, Tetsuya Matsuyama, Kenji Wada, Koichi Okamoto
Summary: In this study, the localized surface plasmon resonance (LSPR) in the visible range was demonstrated by using nanostructures on mirrors. The NHoM structure, based on random nanoparticles obtained by heat-treating silver thin films, showed tunability over a wide wavelength range and achieved full coverage of the sRGB color space. Comparison with the periodic NDoG structure revealed that the NHoM structure had less variation in resonant wavelength, indicating high color quality. The NHoM structure was also successfully applied in colorimetric sensing, showing significant improvement in performance.
Article
Biophysics
Heesang Ahn, Soojung Kim, Yoonhee Kim, Seungchul Kim, Jong-Ryul Choi, Kyujung Kim
Summary: The study explores three plasmonic modalities as tools to study neurons and their responses, demonstrating the potential of plasmonic sensing, imaging, and stimulation techniques to effectively study neurons and understand their specific molecular activities.
BIOSENSORS & BIOELECTRONICS
(2021)
Review
Chemistry, Analytical
Paulo S. S. Dos Santos, Jose M. M. M. de Almeida, Isabel Pastoriza-Santos, Luis C. C. Coelho
Summary: Surface plasmon resonance and localized surface plasmon resonance are common and powerful label-free biosensing techniques, with LSPR sensors' performance depending on the size, shape, and nature of nanomaterials used to develop sensors with a tunable wavelength range. Utilizing LSPR along optical fiber technology allows for the creation of ultra-sensitive and long-range sensing networks, particularly in the near infra-red spectrum.
Article
Chemistry, Physical
Marcello Condorelli, Lucio Litti, Mario Pulvirenti, Vittorio Scardaci, Moreno Meneghetti, Giuseppe Compagnini
Summary: This study presents a cost-effective, reusable, and high-responsive SPR device based on silver nanoplate paved PMMA cuvettes, which achieve high refractive index sensitivities using nanoplates with plasmon resonances in the near-infrared region. The experimental results align with calculated extinction cross-section using a Boundary Element Method (BEM) approach, demonstrating the effectiveness of the simple optical device for integration and miniaturization.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Nunzio Cennamo, Domenico Del Prete, Francesco Arcadio, Luigi Zeni
Summary: A novel sensing method for temperature measurements of liquids using plasmonic resonance in multimode plastic optical fibers has been devised. The method involves connecting two different D-shaped POF platforms to measure temperature changes in the solution covering the thermosensitive platform. This approach allows for the measurement of temperature by varying the light launch conditions in the surface plasmon resonance POF sensor as a result of temperature changes.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Ajay Kumar Agrawal, Akanksha Ninawe, Anuj Dhawan
Summary: This paper reports a significantly improved sensing response of a plasmonic sensor based on a nanopillar array separated from a thin film, operated using the Kretschmann configuration. The sensor shows high sensitivity and figure of merit for both localized and bulk sensing responses. It can be easily fabricated and has great potential for biosensing applications.
IEEE SENSORS JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Bo Chu, Yan Li, Yiheng Qin, Taozheng Hu, Facheng Zhong, Fanguang Zeng, Pei Ding, Li Shao, Yinxiao Du, Shuo Tian, Zhuo Chen
Summary: We present a transparent display using a metasurface of silver nanoparticles (Ag NPs) consisting of a transparent substrate and a layer of Ag NPs deposited by a dielectric film. By a simple annealing process, the prepared Ag NPs metasurface shows a deep transmission valley at a wavelength of lambda = 468 nm, enabling transparent display by projecting monochromatic images. Truncated nanospheres formed by deposited Ag NPs exhibit directional scattering properties with a wide angular beamwidth of about 90 degrees, resulting in wide viewing angles and high brightness characteristics of the fabricated displays. The transmission modes can also be controlled by the thickness of the deposited dielectric film to achieve a red-shifted wavelength of lambda = 527 nm. This simple and low-cost approach using traditional thin film deposition and annealing techniques allows for scalable fabrication of transparent displays in large areas.
Article
Chemistry, Multidisciplinary
Chaolumen Wu, Qingsong Fan, Wanling Wu, Tian Liang, Yun Liu, Huakang Yu, Yadong Yin
Summary: Integrating plasmonic resonance into photonic bandgap nanostructures allows for additional control over their optical properties. One-dimensional plasmonic photonic crystals with angular dependent structural colors are fabricated by assembling magnetoplasmonic colloidal nanoparticles under a magnetic field. The assembled structures exhibit angular dependent colors based on the activation of optical diffraction and plasmonic scattering.
Article
Optics
K. T. Mpofu, C. Lee, G. E. M. Maguire, H. G. Kruger, M. S. Tame
Summary: This study theoretically investigates the use of quantum sensing techniques to measure the kinetic parameters of molecular interactions. The research finds that quantum states such as two-mode Fock states, squeezed vacuum states, and squeezed displaced states can enhance the measurement precision compared to classical light. These findings are important for the design of more precise quantum-based sensors in the life sciences.
Article
Physics, Applied
Yuzhang Liang, Xinran Wei, Shuwen Chu, Xin Zhang, Yurui Fang, Wei Peng
Summary: Simultaneous observation of Tamm plasmon (TP) and surface plasmon (SP) resonances has attracted attention for improving sensing performance and broadening the application field of plasmonic biosensors. However, current methods require bulky and complicated setups, limiting miniaturization and integration. In this study, a nanograting-coupled plasmonic-photonic multilayer structure potentially integrated on the optical fiber tip is proposed, enabling the simultaneous excitation of TP and SP modes by utilizing diffraction light. The proposed structure offers self-reference sensing and rapid determination of refractive index.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Abbas Hamouleh-Alipour, Ali Mir, Ali Farmani
Summary: The thermo-optic mechanism for plasmonics sensing of terahertz radiations in Graphene/SiO2 metasurface is investigated numerically and analytically at room temperature. A very compact footprint for nanosensor applications is proposed, with high sensitivity and figure of merit. The study also explores tunable optical properties of graphene at different temperatures and the relationship between temperature variation and structure performance.
IEEE SENSORS JOURNAL
(2021)
Review
Engineering, Electrical & Electronic
Vivek Kumar Gupta, Kuldeep Choudhary, Santosh Kumar
Summary: This article summarizes the wide use of two-dimensional materials-based plasmonic sensors in various sensing applications, particularly in biosensors. These sensors offer label-free detection, cost-effectiveness, and real-time monitoring. The review also compares the sensitivity, detection range, and detection limit of these sensors based on different materials such as graphene, antimonene, phosphorene, blue phosphorous, molybdenum sulfide, molybdenum selenide, and tungsten selenide. These parameters play a crucial role in determining the accuracy and applicability of the sensors in health monitoring systems for desired results.
IEEE SENSORS JOURNAL
(2023)
