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)
Review
Nanoscience & Nanotechnology
Xu Qin, Wangyu Sun, Ziheng Zhou, Pengyu Fu, Hao Li, Yue Li
Summary: The review focuses on the technique of waveguide effective plasmonics, which provides a feasible low-loss realization of plasmonic metamaterials in lower frequency based on the structural dispersion. It highlights the underlying physics of waveguide effective plasmonics and its applications, ranging from classical plasmonic concepts to novel effective plasmonic devices. Additionally, it briefly discusses the future research directions and potential applications.
Article
Nanoscience & Nanotechnology
Nikolai B. Chichkov, Andrey B. Evlyukhin, Boris N. Chichkov
Summary: The letter evaluates the rest mass of light-induced surface-plasmon polaritons (SPPs) and discusses the idea of collisions between two massive SPP quasiparticles resulting in frequency changes according to energy and momentum conservation laws.
Article
Nanoscience & Nanotechnology
Yuanhai Lin, Thanh Xuan Hoang, Hong-Son Chu, Christian A. Nijhuis
Summary: This paper discusses the directional excitation of surface plasmon polaritons in a plasmonic strip waveguide driven by an aperiodic groove array with the use of Al-Al2O3-Au tunnel junction. The optimization of the groove array allows for selective reflection of SPPs by 180 degrees in the desired direction, achieving a directional ratio close to 8. Experimental results are supported by detailed theoretical simulations.
Article
Nanoscience & Nanotechnology
Xu Qin, Yijing He, Wangyu Sun, Pengyu Fu, Shuyu Wang, Ziheng Zhou, Yue Li
Summary: This study investigates the concept of stepped waveguide metamaterials as low-loss effective replicas of surface plasmon polaritons (SPPs). The proposed structure maintains the same field configuration as regular SPPs but avoids inherent losses, outperforming regular low-loss SPP designs with natural plasmonic materials in terms of propagation lengths. Furthermore, the stepped waveguide metamaterial exhibits excellent compatibility in direct interconnections with arbitrary regular SPPs, potentially leading to new SPP devices with low-loss advantages.
Article
Chemistry, Multidisciplinary
Zhiqiang Quan, Houquan Liu, Libo Yuan
Summary: This study presents a highly adjustable non-diffracting SPP-beam-based spin router with the ability to dynamically rotate the launch direction and demonstrate good broadband response capability through theoretical design and simulation.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Nada AbdElaziz, Bedir Yousif, Eman AbdElhalim, Waleed M. Gaballah, Ahmed S. Samra
Summary: The photonics world is increasingly interested in plasmonic photodetectors, as they allow light to be confined to small spaces in metallic structures, leading to improved performance. In this study, a GaAs PIN photodetector with gold and aluminum surface plasmon polariton (SPP) rectangle grating achieved a higher internal quantum efficiency (IQE) compared to a standard GaAs photodetector without SPP grating. Nanogratings of various shapes were also studied, with the bowtie shape showing the most significant enhancement in IQE. This research highlights the potential of plasmonic photodetectors for enhancing light absorption and generation in semiconductor materials.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
S. Ali Hassani Gangaraj, Francesco Monticone
Summary: Investigated a method to break reciprocity without relying on magneto-optical effects or spacetime modulations by biasing a plasmonic material with a direct electric current. Explored the propagation properties of surface plasmon-polaritons (SPPs) supported by this nonreciprocal platform and discovered previously overlooked anomalous wave-propagation effects. Clarified the impact of dissipation on nonreciprocal effects and revealed connections between inflection points, exceptional points at band-edges, and complex modal transitions. Theoretical demonstration of drift-induced nonreciprocal near-field radiative heat transfer in the field of thermal photonics.
Article
Nanoscience & Nanotechnology
Artyom Assadillayev, Tatsuki Hinamoto, Minoru Fujii, Hiroshi Sugimoto, Mark L. Brongersma, Soren Raza
Summary: Resonant optical nanomaterials, such as silicon, can manipulate highly confined guided waves in the form of surface plasmon polaritons (SPPs) on a subwavelength scale. It has been demonstrated that SPPs in ultrathin metal films can be efficiently launched due to the strong coupling between the Mie resonances of the nanoparticle and the SPP modes. By varying the particle size, the SPP excitation wavelength can be tuned across the entire near-infrared spectrum. Our results suggest that silicon nanoparticles may serve as scatterers of the SPPs supported by the film, paving the way for using high-refractive-index dielectric nanoantennas as compact elements for manipulating highly confined SPPs.
Article
Engineering, Electrical & Electronic
Gaurav Mittal, Nagendra Prasad Pathak
Summary: This article presents the study and application of spoof surface plasmon polaritons (SSPPs) in the microwave frequency domain, controlling the dispersion relation and designing a broadband bandpass filter (BPF) using plasmonic metamaterial. Experimental results show that the passband of the BPF is 1.2 to 6.0 GHz with an insertion loss less than 2 dB.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2021)
Article
Optics
Qiang Zhang, Zhenwei Xie, Peng Shi, Hui Yang, Hairong He, Luping Du, Xiaocong Yuan
Summary: This article investigates the dynamic modulation of optical skyrmions by changing the field symmetry and adding chirality. The study reveals that field symmetry controls the transformation between skyrmions and merons, while material chirality regulates the degree of twist in the fields and spins, and governs the skyrmionic transition. The enantioselective twist of skyrmions and merons arises from the chirality-induced splitting of the hyperboloid in momentum space. The research enriches the portfolio of optical quasiparticles and deepens our understanding of light-matter interaction, paving the way for applications such as chiral sensing, optical tweezing, and topological phase transitions in quantum matter.
PHOTONICS RESEARCH
(2022)
Article
Optics
J. P. Trevino, V. Coello, A. James-Najera, S. Chavez-Cerda, J. E. Gomez-Correa
Summary: This work reports the observation of 2D longitudinal aberrated wavefields by mapping the intensity distributions of surface plasmon polaritons (SPPs) propagating on a metal/air interface. The SPP beam orientation can be adjusted to mimic aberrated beams, showing Seidel terms such as defocus, spherical, coma, and tilt aberrations. This approach provides a visual and rapid examination of the longitudinal evolution of aberrated beams compared to more complicated post-processing reconstructions.
PHOTONICS RESEARCH
(2023)
Article
Physics, Multidisciplinary
Xiaorun Zang, Andriy Shevchenko
Summary: This study explores further enhancement of near-field enhancement by placing a metal-dielectric slab waveguide beneath the lattice of metal nanoparticles. Numerical simulations show that this approach can significantly increase the near-field intensity, providing an 80-fold increase over single-particle plasmon resonance and a 7-fold increase over lattice-resonance enhancement. This enhancement mechanism can be used to design extraordinarily efficient nonlocal optical metasurfaces for various applications.
NEW JOURNAL OF PHYSICS
(2023)
Article
Biophysics
Tianping Xu, Zhaoxin Geng
Summary: Due to the lower sensitivity of LSPR biosensors compared to other sensors, researchers have explored various methods to improve performance, including structural, material, and interface modifications. These efforts are expected to expand the applications of LSPR biosensing technology.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Optics
Ali Tehranian, Mehdi Ahmadi-Boroujeni, Afshin Abbaszadeh
Summary: In this paper, a novel waveguide structure capable of supporting highly confined spoof surface plasmonic (SSP) mode with lower propagation loss is proposed. By analyzing the 2D and 3D structures of the waveguide, it is found that a subwavelength cross-sectional size waveguiding structure with high field confinement and low propagation loss can be achieved if the gap region is properly designed.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Baowei Gao, Yilun Wang, Tongzhou Zhang, Yi Xu, Axin He, Lun Dai, Jiasen Zhang
Article
Optics
Bo Dai, Ziao Jiao, Lulu Zheng, Hunter Bachman, Yongfeng Fu, Xinjun Wan, Yule Zhang, Yu Huang, Xiaodian Han, Chenglong Zhao, Tony Jun Huang, Songlin Zhuang, Dawei Zhang
LIGHT-SCIENCE & APPLICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Robert T. Busch, Farzia Karim, John Weis, Yvonne Sun, Chenglong Zhao, Erick S. Vasquez
Article
Optics
Ana Sanchez-Solis, Farzia Karim, Md Shah Alam, Qiwen Zhan, Tzarara Lopez-Luke, Chenglong Zhao
Article
Chemistry, Multidisciplinary
Md Shah Alam, Qiwen Zhan, Chenglong Zhao
Article
Chemistry, Multidisciplinary
Fan Wu, Jiaqi Guo, Yuming Huang, Kun Liang, Lei Jin, Junqiang Li, Xuyan Deng, Rongzhen Jiao, Yumin Liu, Jiasen Zhang, Wei Zhang, Li Yu
Summary: This study experimentally investigates the optical chirality of plexcitonic systems, made up of composite metal nanoparticles and chiral J-aggregates, in the strong coupling regime. Mode splitting and anticrossing behavior are observed in both the circular dichroism (CD) and extinction spectra of the hybrid nanosystems. The research provides insights into the modification of extinction and optical chirality in hybrid systems due to the formation of plexcitons, and proposes a criterion for strong plasmon-exciton interaction based on mode splitting in CD spectra.
Article
Optics
Axin He, Yi Xu, Baowei Gao, Tongzhou Zhang, Jiasen Zhang
Summary: In this study, broadband subwavelength photonic spin Hall devices (PSHDs) based on L-shaped optical slot antennas were demonstrated, showing small size, broadband response, and flexible design.
LASER & PHOTONICS REVIEWS
(2021)
Article
Nanoscience & Nanotechnology
Yi Xu, Baowei Gao, Axin He, Tongzhou Zhang, Jiasen Zhang
Summary: The study presents and experimentally demonstrates a cross-layered all-optical 3D router using optical slot antenna pairs to achieve nanoscale footprint routing, enabling arbitrary direction routing of plasmonic signals between different layers. This configuration paves the way for future research and applications of high integration density 3D plasmonic circuits.
Article
Multidisciplinary Sciences
Bo Dai, Liang Zhang, Chenglong Zhao, Hunter Bachman, Ryan Becker, John Mai, Ziao Jiao, Wei Li, Lulu Zheng, Xinjun Wan, Tony Jun Huang, Songlin Zhuang, Dawei Zhang
Summary: The study presents a microfluidic-assisted 3D printing technique for fabricating biomimetic compound eyes, mimicking natural eye structures and enabling various applications.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Yi Xu, Baowei Gao, Axin He, Tongzhou Zhang, Jiasen Zhang
Summary: Optical displacement metrology is crucial in nanotechnology but lacks an ultracompact sensor with angstrom-scale resolution and large measurement range. This study proposes an optical displacement sensor with wavelength modulation, achieving subwavelength footprint, angstrom-level resolution, and a wide measurement range.
Article
Optics
Axin He, Baowei Gao, Yi Xu, Tongzhou Zhang, Jiasen Zhang
Summary: In this study, a 2D displacement sensor composed of eight optical slot antennas is proposed for high-precision displacement sensing along an arbitrary direction in a 2D plane. The resolution can reach 0.88 nm. By controlling the geometries and interference effects of the antennas, the displacement sensitivity can be improved. This research paves the way for the development of high-performance sensing, integrated photonic circuits, and on-chip signal processing.
Article
Biochemical Research Methods
Geonsoo Jin, Seongwoo Hong, Joseph Rich, Jianping Xia, Kyeri Kim, Lingchong You, Chenglong Zhao, Tony Jun Huang
Summary: Machine learning image recognition and classification in the field of nanotechnology face challenges in image resolution, field of view, and processing time. To overcome these challenges, researchers have developed an intelligent nanoscope that combines machine learning and microsphere array-based imaging, allowing for high-resolution images with a large field of view, as well as rapid classification of nanomaterials using a deep convolution neural network.
Article
Chemistry, Multidisciplinary
Farzia Karim, Erick S. Vasquez, Yvonne Sun, Chenglong Zhao
Review
Chemistry, Multidisciplinary
Chenglong Zhao, Piyush J. Shah, Luke J. Bissell
Article
Engineering, Electrical & Electronic
Yang Liu, Jiasen Zhang, Lian-Mao Peng
NATURE ELECTRONICS
(2018)
