Article
Engineering, Electrical & Electronic
Marco Vallone, Alberto Tibaldi, Stefan Hanna, Anne Wegmann, Detlef Eich, Heinrich Figgemeier, Francesco Bertazzi, Giovanni Ghione, Michele Goano
Summary: Multiphysics modeling is used to analyze the role of surface plasmon-polaritons observed in gold nanorods arranged on the illuminated face of a planar HgCdTe-based mid-wavelength infrared focal plane array. The simulations show that the proposed plasmonic detector with a 1 μm-thick absorber layer significantly reduces diffusive inter-pixel crosstalk compared to conventional non-plasmonic detectors with a 5 μm-thick absorber layer, without compromising responsivity. Additionally, the plasmonic detector achieves increased detectivity in the entire MWIR band by taking advantage of the reduced absorber volume.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Chemistry, Physical
Luji Li, Gang Ye, Tianyuan Luo, Xiayan Chen, Gaojie Zhang, Hao Wu, Li Yang, Wenfeng Zhang, Haixin Chang
Summary: This study developed a facile solution evaporation method to grow a large-sized lead-free perovskite single crystal for high-performance mid-infrared photodetectors. The photodetector exhibited ultralow dark current drift and power consumption, and achieved effective photodetection from ultraviolet to mid-infrared range based on photoelectric and photobolometric effects.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Optics
Akira Matsumori, Hiroshi Sugimoto, Minoru Fujii
Summary: A nanoantenna that can direct light to a specific direction is crucial in various applications in nanophotonics. By controlling the interference between electric and magnetic multipolar modes, directional light scattering by a nanoantenna can be achieved. This study demonstrates both theoretically and experimentally that a small perturbation, such as a notch, on a Mie resonant silicon nanosphere (Si NS) can result in a unique structure that exhibits unidirectional transverse light scattering in the visible range. The mechanism and the generation of a large transverse optical force by a notched Si NS are discussed.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Applied
Alberto Tibaldi, Jesus Alberto Gonzalez Montoya, Marco Vallone, Michele Goano, Enrico Bellotti, Francesco Bertazzi
Summary: Carrier transport in type-II superlattice photodetectors is investigated using a rigorous nonequilibrium Green's function model based on a physics-based Buttiker-probe formalism. Intraband scattering self-energies are computed in the self-consistent Born approximation, while interband self-energies are included in terms of semiclassical generation-recombination rates. Conservation of current is achieved using an efficient Newton-Raphson algorithm, providing a quantum-kinetic description of carrier transport within a drift-diffusion-friendly framework.
PHYSICAL REVIEW APPLIED
(2021)
Article
Materials Science, Ceramics
Chuchu Qian, Kehui Hu, Junhua Li, Peijie Li, Zhigang Lu
Summary: This study simulated light scattering caused by ceramic particles during stereolithography ceramic manufacturing, confirming the effects of particle distribution, input energy, and relative refractive index. The simulation also revealed differences in scattering edge and surface roughness, providing valuable insights for controlling the light-cured 3D printing process for ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Hongyu Zhou, Minglian Li, Na Diao, Shaogui Wu, Jiayang Wang, Peize Wu
Summary: In this study, a technique called removing resonance fluorescence (RRF) is introduced for accurate separation of resonance fluorescence and scattered light spectra in light scattering spectroscopy (RLS). The use of MPA-capped quantum dots (QDs) to detect Hg2+ illustrates the implementation of this method. The study provides a useful tool for expanding the application range of RLS.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Instruments & Instrumentation
Hiroyuki Fujii, Koyata Nishikawa, Hyeonwoo Na, Yuki Inoue, Kazumichi Kobayashi, Masao Watanabe
Summary: Understanding light scattering and propagation in soymilk is crucial for the nondestructive evaluation of food qualities of soymilk and its products by near-infrared spectroscopy. Our numerical examination showed that the scattering properties of soymilk strongly depend on the solid-content properties, implying a high correlation between the solid-content and scattering properties. The finite size effect on light propagation can be negligible at a certain cylinder radius, making the light propagation model for a semi-infinite medium a better choice for fast calculations in inverse analysis.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Review
Physics, Applied
A. E. Yachmenev, R. A. Khabibullin, D. S. Ponomarev
Summary: In recent years, significant advances have been made in THz photodetectors based on semiconductor structures, with main advantages including fast response time, improved spectral resolution, and multi-color operation. These advancements allow for widespread applications in important areas such as single photon detection, THz heterodyne detection, continuous monitoring of toxic gases, THz free space communications, and radio astronomy.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Sivacarendran Balendhran, Mohammad Taha, Shifan Wang, Wei Yan, Naoki Higashitarumizu, Dingchen Wen, Nima Sefidmooye Azar, James Bullock, Paul Mulvaney, Ali Javey, Kenneth B. Crozier
Summary: Flexible optoelectronics is a rapidly growing field with a wide range of potential applications, but current devices have limitations in their spectral range. This study demonstrates flexible photodetectors using a VOx nanoparticle ink, with an extremely broad operating wavelength range of 0.4 to 20 μm. These devices show mechanical flexibility, wide spectral response, and ease of fabrication, making them highly desirable for various applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Ivan Lopushenko, Alexander Bykov, Igor Meglinski
Summary: This paper investigates the origin of unpolarized light resulting from the backscattering of circularly polarized light by a random turbid tissue-like disperse medium. The dynamics of the backscattered fraction of unpolarized light is revealed, showing its meticulous decomposition into two rigorously polarized components. The results obtained have significant implications for future studies in tissue polarimetry and light vortices.
Article
Energy & Fuels
Mohammad Hosein Mohammadi, Davood Fathi, Mehdi Eskandari
Summary: This paper investigates the use of plasmonic core/shell nanorod (PLCS-NR) array to enhance the performance of perovskite solar cells. Simulation results show that the optimal choice of core and shell materials, as well as the height of the PLCS-NRs, can significantly improve the device performance.
Article
Multidisciplinary Sciences
Ze Yang Zhou, Jun Huang
Summary: A comprehensive design method based on sorting factor Pareto solution is proposed to reduce the radar cross section (RCS) and suppress the infrared signature of unmanned aircraft. The method combines physical optics, physical diffraction theory, Monte Carlo, and ray tracing to evaluate electromagnetic scattering characteristics and infrared radiation intensity. Through continuous improvement of design parameters and sub-models, the method effectively enhances the radar/infrared integrated stealth performance of the aircraft.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Matthew Montanaro, Joel McCorkel, June Tveekrem, John Stauder, Eric Mentzell, Allen Lunsford, Jason Hair, Dennis Reuter
Summary: The TIRS-2 instrument on Landsat 9 incorporates design changes to reduce stray light issues, successfully minimizing scattering signals and eliminating stray-light artifacts in imagery.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Mechanics
Yanfeng Chen, Tai Jin, Zhenghong Liang, Liyong Zou
Summary: This study investigates numerically and theoretically the Richtmyer-Meshkov instability of a light fluid layer driven by reflected shock. The growth rate in the reflected stage is found to be larger than that in the incident stage for the single-perturbed case. For the double-perturbed case, the merging of interfaces accelerates and the interface-coupling effect increases. A modified model has been proposed to predict the amplitude growth of the interface after reshock.
Article
Multidisciplinary Sciences
Thomas Puiseux, Anou Sewonu, Ramiro Moreno, Simon Mendez, Franck Nicoud
Summary: A numerical approach for simulating time-resolved 3D phase-contrast MRI under realistic flow conditions is presented. The Navier-Stokes and Bloch equations are solved with specific strategies to reduce computational cost. The simulated results compare favorably with experimental data.
Article
Optics
Junyu Li, Li Bao, Shun Jiang, Qiushi Guo, Dehui Xu, Bin Xiong, Guangzu Zhang, Fei Yi
Article
Nanoscience & Nanotechnology
Jingyao Liu, Zhixiang Hu, Yuzhu Zhang, Hua-Yao Li, Naibo Gao, Zhilai Tian, Licheng Zhou, Baohui Zhang, Jiang Tang, Jianbing Zhang, Fei Yi, Huan Liu
NANO-MICRO LETTERS
(2020)
Article
Optics
Shun Jiang, Junyu Li, Jinzhao Li, Guangzu Zhang, Huan Liu, Fei Yi
Article
Multidisciplinary Sciences
Xiaochao Tan, Heng Zhang, Junyu Li, Haowei Wan, Qiushi Guo, Houbin Zhu, Huan Liu, Fei Yi
NATURE COMMUNICATIONS
(2020)
Article
Optics
Yikun Chen, Shiliang Pu, Chongzhi Wang, Fei Yi
Summary: Metalenses can achieve multifunctional control of light beams through electrical tuning, contributing to dynamically tunable optical systems.
Article
Engineering, Electrical & Electronic
Tu-Lu Liang, Yongming Tu, Xi Chen, Yingyan Huang, Qiang Bai, Yaying Zhao, Junchi Zhang, Yutong Yuan, Junyu Li, Fei Yi, Wei Shao, Seng-Tiong Ho
Summary: The fully numerical method NAMES can efficiently design a wide range of devices based on AMES, including complex geometries, providing robust and general results.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Junyu Li, Jinzhao Li, Haoran Zhou, Guangzu Zhang, Huan Liu, Shaowei Wang, Fei Yi
Summary: A metal-insulator-metal based infrared plasmonic metamaterial absorber utilizing deep subwavelength meander line nanoantennas has been experimentally demonstrated to exhibit high absorption. The physical mechanisms responsible for the absorption, including strong coupling between plasmon resonances and phonon vibrations, have been systematically analyzed. The absorber shows potential for integration with small pixels of infrared focal plane arrays for enhanced performances and expanded functionalities.
Article
Chemistry, Analytical
Jinzhao Li, Junyu Li, Shudao Zhou, Fei Yi
Summary: The combination of metasurfaces with photodetectors enhances the control over light amplitude, phase, frequency, and polarization state, playing a significant role in improving detection performance and resolving more electromagnetic parameters.
Article
Optics
Changming Chen, Junyu Li, Chunxue Wang, Yingyan Huang, Daming Zhang, Zuosen Shi, Zhanchen Cui, Fei Yi, Seng-Tiong Ho
Summary: This work introduces a photonic device integration platform capable of integrating active-passive InP-based photonic devices efficiently without material regrowth. The performance of the platform is analyzed using an example with optimized structural parameters to achieve high chip-to-fiber coupling efficiency and optical gain.
Article
Optics
Shun Jiang, Jinzhao Li, Junyu Li, Jianjun Lai, Fei Yi
Summary: By using metamaterial absorbers (MAs), the spectral and polarization responses of VOx microbolometers can be tailored simultaneously, reducing the need for separate filters and polarizers. The MAs selectively absorb the TM polarization component while rejecting the TE polarization component, enabling the development of large format room temperature multi-spectral infrared polarization imaging detectors.
Article
Materials Science, Multidisciplinary
Jinzhao Li, Mengdan Du, Quanquan Sun, Fei Yi
Summary: This paper proposes a numerical model of anti-reflective structures based on SEM and EDS characterization, revealing multiple anti-reflective mechanisms through FDTD simulation.
MATERIALS RESEARCH EXPRESS
(2022)
Review
Multidisciplinary Sciences
Zhiyi Xuan, Junyu Li, Qingquan Liu, Fei Yi, Shaowei Wang, Wei Lu
Summary: Structural colors are colors created by the interaction between incident light and nanostructures, offering advantages of long-term stability and environmental friendliness. Inspired by natural colors, artificial structural colors with multiple functions beyond decoration have been developed. Various strategies and approaches have been reported to achieve dynamically tunable structural colors.
Proceedings Paper
Engineering, Electrical & Electronic
Junyu Li, Fei Yi
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Junyu Li, Fei Yi
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Junyu Li, Haoran Zhou, Fei Yi
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2019)
