Article
Optics
Kiran Mujeeb, Muhammad Faryad, Akhlesh Lakhtakia, Julio Urbina
Summary: The study investigates the excitation of a surface-plasmon-polariton wave for sensing the refractive index of a fluid infiltrating a columnar thin film. Multiple excitations of the same SPP wave were found to be possible, which can help increase the reliability and accuracy of results when sensing the same fluid.
CHINESE OPTICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Yulong Wang, Changjun Min, Yuquan Zhang, Fu Feng, Guangyuan Si, Ling Li, Xiaocong Yuan
Summary: The paper introduces a simple method for generating structured SPP fields on-chip, allowing for flexible manipulation of plasmonic polariton fields. This approach could provide new ideas for applications in the field of photonics.
Article
Chemistry, Multidisciplinary
Di Xing, Cheng-Chieh Lin, Phillip Won, Rong Xiang, Tzu-Pei Chen, A. Syazwan A. Kamal, Yang-Chun Lee, Ya-Lun Ho, Shigeo Maruyama, Seung Hwan Ko, Chun-Wei Chen, Jean-Jacques Delaunay
Summary: Metallic NW coupled QDs plasmonic nanolaser presents a promising approach for ultrasmall light sources, with potential applications and fundamental studies of light matter interactions.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Optics
Huaping Jia, Chi Chung Tsoi, Abdel El Abed, Weixing Yu, Aoqun Jian, Shengbo Sang, Xuming Zhang
Summary: Plasmon-enhanced photocatalysis is a promising technology for solar-to-chemical energy conversion. By controlling the morphology, composition, size, spacing, and dispersion of nanostructures, plasmonic nanostructure arrays enhance light-harvesting capability, charge transfer, electromagnetic fields, and contact interfaces. This study provides an overview of plasmonic nanostructure arrays and their applications in solar-driven chemical conversion, offering guidance for integrating plasmonic nanostructures in functional devices in various fields.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Wang Tianrun, Ran Yujing, Liu Tingting, Guo Qian, Gao Chang, Jiang Zhaotan, Wang Zhi
Summary: In this study, (Zr,Nb)N-x ternary nitride thin films with different metal content were prepared by DC magnetron sputtering and their structural, plasmonic, and electronic properties were investigated. The results reveal that the films have a rock salt structure and increasing the Zr content leads to an enlargement of the lattice constant. The thin films exhibit metallic and dielectric properties in different wavelength ranges, and increasing the Zr content reduces the screened plasma frequency. Nb-rich films demonstrate dual epsilon-near-zero characteristics. The dielectric properties of the films are related to the intraband and interband transitions of the electrons, as confirmed by calculated band structures.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Wenchao Zhao, Zhengji Wen, Qianqian Xu, Ziji Zhou, Shimin Li, Shiyu Fang, Ting Chen, Liaoxin Sun, Xingjun Wang, Yufeng Liu, Yan Sun, Yan-Wen Tan, Ning Dai, Jiaming Hao
Summary: All-inorganic cesium lead halide perovskite quantum dots have shown great potential as optoelectronic materials, with recent research focusing on enhancing their light emission using metallic thin films. This method has led to significant improvements in the luminous efficiency of the quantum dots, especially those with high intrinsic quantum efficiency.
Article
Nanoscience & Nanotechnology
Wenchao Zhao, Zhengji Wen, Qianqian Xu, Ziji Zhou, Shimin Li, Shiyu Fang, Ting Chen, Liaoxin Sun, Xingjun Wang, Yufeng Liu, Yan Sun, Yan-Wen Tan, Ning Dai, Jiaming Hao
Summary: Recent research has shown that the light emission from cesium lead halide perovskite quantum dots can be greatly enhanced by using metallic thin films, resulting in significant improvement in luminous efficiency. This enhancement is due to the joint effects of enhancing photonic absorption and increasing radiative rate mediated by surface plasmon polaritons.
Article
Chemistry, Analytical
Marco S. Rodrigues, Joel Borges, Filipe Vaz
Summary: This study introduces a thin film with reversible optical response that exhibits localized surface plasmon resonance (LSPR) phenomenon under repeated uniaxial strain. Gold nanoparticles were grown throughout a titanium dioxide dielectric matrix to prepare the sensing platform. The flexible nanoplasmonic transducers showed a higher sensitivity and transmittance gauge factor at maximum strain, indicating a reduction in the refractive index of the matrix surrounding the gold nanoparticles. Optical modeling using discrete dipole approximation suggests a correlation between the optical response of the strained thin film sensor and the reduction in refractive index.
Article
Materials Science, Ceramics
Sanjib Mondal, Avijit Dalal, Aniruddha Mondal
Summary: Aluminum nanoparticles (NPs) were synthesized on Erbium-doped Titanium dioxide (Er:TiO2) thin films (TFs) using sol-gel and glancing angle deposition (GLAD) technique inside a thermal evaporation system. The effects of the NPs on the electrical and optical properties of the Er:TiO2 TF were analyzed. The NPs had a diameter of 13 nm and showed plasmonic resonance in the UV region. A plasmonic photodetector (PD) was fabricated using the NPs, exhibiting high photosensitivity and fast switching behaviors under UV illumination. The device showed potential as a sensitive and cost-effective UV photodetector.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
Tian-qi Long, Lian-gang Zhang, Ling-Ling Wang, Qi Lin
Summary: A new grating-assisted triple-layer continuous borophene sheets structure is proposed to achieve phase-coupled plasmon-induced transparency effect. The continuous borophene sheet can avoid complicated processing techniques and additional doping configurations, and the transparency windows can be efficiently tuned by adjusting carrier densities or separation distances.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Applied
Jing Zhou, Jie Deng, Mengdie Shi, Zeshi Chu, Haowen Li, Rui Dong, Xiaoshuang Chen
Summary: Cavity coupled plasmonic resonators, as an improved version of plasmonic light coupling structures, are more effective in adjusting the light in-coupling efficiency, local field polarization, and light absorption competition, leading to enhanced performance in infrared detectors. Several features of cavity coupled plasmonic resonator integrated infrared detectors, including deep subwavelength light concentration, Ohmic loss suppression, and high-contrast polarization discrimination, are highlighted for their potential benefits. Expectations for cavity coupled plasmonic resonators in infrared detectors include optical-electrical joint functions, compatibility with focal plane array technology, and new features from innovative combinations of different kinds of cavities and plasmonic structures.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Yanfeng Wang, Fei Yang, Zhengjun Zhang, Yiping Zhao
Summary: Transparent metallic films (TMFs) are the best candidates among transparent conductive films (TCFs) due to their ability to maintain high electrical conductivity and optical transparency simultaneously under mechanical deformation. Empirical relationships and a figure-of-merit expression have been proposed to predict the overall quality and performance of TMFs, particularly in silver nanohole array TMFs. The experimental data and theoretical predictions show that a beta value of 5 is better for characterizing the performance of nanohole array TMFs compared to beta value of 10 for TCFs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Adi Salomon, Heiko Kollmann, Manfred Mascheck, Slawa Schmidt, Yehiam Prior, Christoph Lienau, Martin Silies
Summary: Localized surface plasmon resonances in metallic films can couple to form collective behavior, affecting the linear and nonlinear optical properties of the sample. Introduction of defects in nanocavity arrays leads to hot-spot formation and spatially confined fluctuations of the plasmonic field. By manipulating hot spot lifetime, the optical properties of nanosystems can be tailored through coherent couplings and tailored disorder.
Article
Nanoscience & Nanotechnology
Alvaro Rodriguez Echarri, Joel D. Cox, Fadil Iyikanat, F. Javier Garcia de Abajo
Summary: Nanoscale nonlinear optics can be enhanced by utilizing plasmonic excitations in nanostructures, but faces challenges such as inelastic losses due to fabrication imperfections.
Article
Optics
Zhikai Li, Jiyuan Huang, Zhuohang Zhao, Yulin Wang, Chengping Huang, Yong Zhang
Summary: A tunable graphene optical modulator based on arrayed hybrid plasmonic nanowires was proposed, utilizing strong subwavelength confinement and near-field coupling to enhance light-matter interactions. The modulator showed excellent modulation performance, with potential for further optimization and wide bandwidth response.
Article
Chemistry, Multidisciplinary
Hiroaki Agawa, Takayuki Okamoto, Toshihiro Isobe, Akira Nakajima, Sachiko Matsushita
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2018)
Article
Optics
Kentaro Takatori, Takayuki Okamoto, Koji Ishibashi
Article
Physics, Applied
Takayuki Okamoto, Kei Shinotsuka, Etsuko Kawamukai, Koji Ishibashi
JAPANESE JOURNAL OF APPLIED PHYSICS
(2018)
Article
Optics
Tomohisa Isegawa, Takayuki Okamoto, Masaki Kondo, Shohei Katsumata, Wakana Kubo
OPTICS COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Tamitake Itoh, Yuko S. Yamamoto, Takayuki Okamoto
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Takumi Sannomiya, Andrea Konecna, Taeko Matsukata, Zac Thollar, Takayuki Okamoto, F. Javier Garcia de Abajo, Naoki Yamamoto
Article
Materials Science, Multidisciplinary
Shohei Katsumata, Tomohisa Isegawa, Takayuki Okamoto, Wakana Kubo
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2020)
Article
Physics, Applied
Kei Shinotsuka, Kotaro Dai, Lingfeng Shen, Satoru Hirama, Yoshihisa Hatta, Takayuki Okamoto
Summary: An effective antireflective surface structure with hierarchical inverse micro-nano features was fabricated using a sequential process of colloidal lithography, maskless plasma etching, and inverted nanoimprinting replication. The structure showed outstanding optical performance in terms of hemispherical reflectance and specular reflectance in the visible range, and can be applied to antiglare/antireflective surfaces to reduce stray light in optical instruments.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Hiroyuki Takei, Kazuki Nagata, Natalie Frese, Armin Golzhauser, Takayuki Okamoto
Summary: By utilizing the nanostructures of butterfly wing scales, efficient SERS activity can be achieved, demonstrating its potential applications in the medical field. Selecting appropriate butterfly species and silver deposition thickness can lead to significant SERS effects.
Article
Thermodynamics
Hoang Thi Thanh Tam, Mana Toma, Takayuki Okamoto, Mio Hidaka, Kensuke Fujii, Yasuhiro Kuwana, Kotaro Kajikawa
Summary: This article reports the use of a highly transparent fluoropolymer LF for efficient daytime radiative cooling. LF is weatherable, solvent-soluble, and paintable, and its cooling effect stems from the vibrations of the carbon-fluorine bond. The study found that LF demonstrates high cooling efficiency in practical use.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Chemistry, Analytical
H. Takei, N. Saito, T. Okamoto, K. Watanabe, M. Westphal, R. Tomioka, A. Goelzhaeuser
Summary: We have developed a SERS stamp that can be pressed directly onto a solid surface for characterization of surface-adsorbed target molecules. The performance of the stamp was evaluated by exposing it to different substances and considering factors such as nanosphere diameter, metal deposition thickness, and the extent of burial of the nanospheres into the adhesive tape. The well-characterized SERS stamp is expected to shed light on the transfer process of target molecules and serve as a new SERS platform.
Article
Chemistry, Multidisciplinary
Rie Watanabe, Mai Mita, Takayuki Okamoto, Toshihiro Isobe, Akira Nakajima, Sachiko Matsushita
NANOSCALE ADVANCES
(2020)
Article
Engineering, Aerospace
Noboru Ebizuka, Takayuki Okamoto, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Minoru Sasaki, Ichi Tanaka, Takashi Hattori, Shinobu Ozaki, Wako Aoki
CEAS SPACE JOURNAL
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Noboru Ebizuka, Takayuki Okamoto, Minoru Sasaki, Ichi Tanaka, Miyuki Uomoto, Takehito Shimatsu
PROCEEDINGS OF 2019 6TH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE BONDING FOR 3D INTEGRATION (LTB-3D)
(2019)
Article
Materials Science, Multidisciplinary
Tamitake Itoh, Yuko S. Yamamoto, Takayuki Okamoto
