Article
Engineering, Electrical & Electronic
Shweta Mehta, Suchitra Vankalkunti, Pawan Kumar Kachhap, Prakash Ratan Gautam, Mandeep Singh
Summary: This study proposes a photonic crystal refractive-index sensor for the detection of volatile organic compounds (VOC). Two sensor designs using Y-splitter photonic crystal waveguide are analyzed using the finite-difference time-domain (FDTD) method. Simultaneous monitoring of two different analytes is possible across the arms of the Y-splitter. The use of porous silicon (p-Si) rods with a porosity of 25% creates a variable refractive index sensing region, resulting in a relative shift in the resonant wavelength of the traveling mode. The numerical simulations confirm a sensitivity of -195.83 nm/RIU and a figure-of-merit of -24.482 RIU-1 in the presence of hazardous alcohols.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Inorganic & Nuclear
Francesco Di Quarto, Andrea Zaffora, Francesco Di Franco, Monica Santamaria
Summary: A generalized modeling equation for optical band gap values of ternary oxides was proposed based on the differences in electronegativity of oxygen and cationic electronegativity, with novel approaches suggested for different polymorphs of binary oxides and ternary oxides in various crystalline structures. The validity of the modeling equations was tested using experimental data on alumina, gallia, and Ga(1-x)AlxO3 polymorphs, as well as amorphous ternary oxides formed on Al-d-metal alloys. The novel approach allowed for overcoming difficulties in fitting optical band gap dependence and provided rationale for behavior variations in anodic films with different d-metal content.
INORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Grzegorz Szwachta, Ewelina Bialek, Maksymilian Wlodarski, Malgorzata Norek
Summary: The effect of annealing on the structural and optical properties of porous anodic alumina (PAA) photonic crystals was studied. The results show that the photonic crystals exhibit excellent structural stability after annealing and high transparency in the mid-infrared spectral region.
Article
Materials Science, Multidisciplinary
Yan Zhi, Weici Liu, Xiangbo Yang, Zhongchao Wei, Shiping Du, Hongyun Meng, Hongzhan Liu, Jianping Guo, Liujing Xiang, Zhenming Huang, Haoxian Li, Faqiang Wang
Summary: In this study, a one-dimensional periodic ring multi-connected optical waveguide network is designed to solve the problem of obtaining ultra-wide photonic band gaps. The analysis of the network's spatial structures and numerical relations reveals a common characteristic that the photonic band gap width is independent of the number of nodes in a unit cell of the optical waveguide network. By comparing it with existing optical waveguide network schemes, the potential practicability of the network is explored, showing advantages of lower complexity for the spatial topology, better scalability, and better structural invariance.
RESULTS IN PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
R. Arunkumar, S. Robinson
Summary: This paper proposes a novel structure for a 2*4 optical decoder using a two-dimensional photonic crystal. The decoder is based on silicon rod photonic crystals and has four output ports, two input ports, and a biasing port. The analysis of the decoder is performed using the Finite Difference Time Domain and Plane Wave Expansion methods, which demonstrate that the optimized functional parameters make the proposed decoder suitable for future all-optical information processing.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Meisam Shiri, Amir Madani, Negar Shaabani
Summary: This paper theoretically studies the transmission properties of a one-dimensional photonic crystal containing molybdenum disulfide monolayers and shows the creation of a new omnidirectional and polarization insensitive photonic band gap due to the presence of MoS2. The behavior of waves from the MoS2 induced band gap is found to be different from that of Bragg gaps. Gaussian beam propagation inside and outside of the photonic crystal is simulated to verify the behavior of field profiles.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Biophysics
Samuel Davies, Yubing Hu, Nan Jiang, Yunuen Montelongo, Andreas Richardson, Jeff Blyth, Ali K. Yetisena
Summary: A facile laser-induced dual polymerization method has been developed to fabricate holographic hydrogel sensors for continuous and reversible colorimetric determination of pH variations in serum. The optimized sensors demonstrate excellent performance, allowing pH monitoring within the physiological range and resisting interference from electrolytes, saccharides, and proteins. This technology has the potential to be applied in the field of biomedicine and is of great significance for blood gas disorder identification and wound healing monitoring.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
S. A. Sivakumar, R. Naveen, S. Jafar Ali Ibrahim, N. S. Kalyan Chakravarthy, Swathi Amancha, Jaikumar Vinayagam, Palakeeti Kiran, Narasimha Rao Nakka
Summary: In this study, two-dimensional photonic structures were used to achieve chip-to-chip communications. The transportation of signals from one chip to another was found to be possible due to the change in lower potential value. The investigation focused on the photonic band gap analysis of the proposed crystal and the efficiencies of different structures were explored by examining various types of losses.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Bartosz Janaszek, Anna Tyszka-Zawadzka, Pawel Szczepanski
Summary: In this work, we explore the possibilities of manipulating photonic density of states (PDOS) in photonic hypercrystals (PHCs). Our analysis demonstrates the ability to achieve photonic bandgap for specific polarization of light and significant enhancement in broadband PDOS. We also introduce the concept of anomalous dispersion arising from effective resonance of the hyperbolic medium in the PHC structure, which can result in negative PDOS, similar to the mobility gap observed in electronic crystals. Furthermore, we show that employing PHC structures instead of standalone hyperbolic media enables more versatile electromagnetic responses, such as broadband perfect absorption with adjustable spectral range of operation.
Article
Optics
Khadijah Alnasser, Steve Kamau, Noah Hurley, Jingbiao Cui, Yuankun Lin
Summary: The study simulated the generation of 2D twisted moire photonic crystals and observed various modes and phenomena in photonic band gaps formed at different twisted angles, gradient levels, and dielectric filling factors. The findings suggest that these interesting discoveries may lead to applications of twisted moire photonic crystals in integrated photonics.
Article
Engineering, Electrical & Electronic
Mahnaz Moradipour, Pardis Kazemi Esfeh, Zahra Alaie
Summary: In this article, half-adder and full-adder gates were implemented using the structure of photonic crystals, and the effects of structural parameters and plasmonic/graphene structures on logic gate performance were studied. An improved plasmonic structure allowing TM mode propagation was proposed to minimize the structure size to the nanoscale.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Optics
Sofyan A. Taya, Nael Doghmosh, Mariam A. Abutailkh, Anurag Upadhyay, Zaher M. Nassar, Ilhami Colak
Summary: The study focuses on investigating the impact of various parameters of the superconducting layer on the photonic band gap (PBG). It was found that the PBG band width at half maximum decreases as the angle of incidence increases, until reaching the Brewster angle where the band gap vanishes. Among the parameters studied, the London penetration length has the greatest effect on the band width at half maximum.
Article
Engineering, Electrical & Electronic
Shuang Tian, Tianyu Yang, Junxi Zhang, Kang Xie, Jiajun Ma, Liang Hong, Yanhua Luo, Zhijia Hu
Summary: A compact multi-band thermal optical switch is proposed by filling liquid crystal in the air holes of a photonic crystal fiber. The switch covers important telecommunication bands with high extinction ratio, and shows sensitivity to ambient temperature, making it suitable for temperature monitoring.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Jackelyne L. M. Villanueva, Danilo. R. Huanca, Adhimar F. Oliveira
Summary: The use of protective treatments on photonic crystal structures can stabilize the optical response and reduce sensitivity loss.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Multidisciplinary
Hexiang Zhao, Jianlan Xie, Jianjun Liu
Summary: The study introduces the Stampfli-type photonic quasi-crystal (S-PTQC) and S-PTQC flat lens, enabling optical and acoustic super-resolution imaging. Acoustic super-resolution imaging is more stable, and the flat lens has the potential to manipulate electromagnetic and elastic waves.
RESULTS IN PHYSICS
(2021)
Article
Physics, Applied
Shin-ichiro Inoue, Tamari Naoki, Toru Kinoshita, Toshiyuki Obata, Hiroyuki Yanagi
APPLIED PHYSICS LETTERS
(2015)
Article
Chemistry, Multidisciplinary
Takahiro Kaji, Katsuyuki Kasai, Yoshihiro Haruyama, Toshiki Yamada, Shin-Ichiro Inoue, Yukihiro Tominari, Rieko Ueda, Toshifumi Terui, Shukichi Tanaka, Akira Otomo
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2016)
Article
Physics, Applied
Guo-Dong Hao, Manabu Taniguchi, Naoki Tamari, Shin-ichiro Inoue
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2016)
Article
Engineering, Electrical & Electronic
Guo-Dong Hao, Manabu Taniguchi, Naoki Tamari, Shin-ichiro Inoue
JOURNAL OF ELECTRONIC MATERIALS
(2017)
Article
Optics
Guo-Dong Hao, Naoki Tamari, Toshiyuki Obata, Toru Kinoshita, Shin-Ichiro Inoue
Article
Crystallography
Toru Kinoshita, Hiroyuki Yanagi, Shin-ichiro Inoue
JOURNAL OF CRYSTAL GROWTH
(2014)
Article
Optics
Satoshi Ishii, Shin-ichiro Inoue, Akira Otomo
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2014)
Article
Physics, Applied
Guo-Dong Hao, Sachiko Tsuzuki, Shin-ichiro Inoue
APPLIED PHYSICS LETTERS
(2019)
Article
Optics
Hiroyuki Kurosawa, Shin-ichiro Inoue
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2020)
Article
Chemistry, Physical
Guo-Dong Hao, Manabu Taniguchi, Shin-ichiro Inoue
Article
Optics
Hiroyuki Kurosawa, Shin-ichiro Inoue
Article
Physics, Applied
Guo-Dong Hao, Manabu Taniguchi, Shin-Ichiro Inoue
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Microbiology
Hiroshi Ueki, Mutsumi Ito, Yuri Furusawa, Seiya Yamayoshi, Shin-ichiro Inoue, Yoshihiro Kawaoka
Summary: A high-power DUV-LED system has been developed, which can effectively inactivate SARS-CoV-2 within a short period of time. The inactivation effect is significantly higher for aerosolized SARS-CoV-2 compared to SARS-CoV-2 suspensions.
Article
Optics
Hiroyuki Kurosawa, Shin-ichiro Inoue
Article
Physics, Applied
Shin-ichiro Inoue, Naoki Tamari, Manabu Taniguchi
APPLIED PHYSICS LETTERS
(2017)
Article
Materials Science, Multidisciplinary
Yanbin Wang, Xinyou Huang, Ziqiu Cheng, Penghui Chen, Yuyang Chen, Junhao Ye, Haohong Chen, Zhenzhen Zhou, Denis Yu Kosyanov, Jiang Li
Summary: Uniform Al2O3-Ce:LuAG composite phosphor ceramics (CPCs) with excellent luminescent properties and thermal stability have been successfully synthesized in this study, showing great potential for application in solid-state laser lighting.
Article
Materials Science, Multidisciplinary
Syed Muhammad Ali Zaidi, Mazhar Ali Kalyar, Zulfiqar Ali Raza, Aayesha Shoukat, Rubaila Waseem, Muhammad Aslam
Summary: Polyvinyl alcohol (PVA) nanocomposite strips embedded with graphene nanosheets and copper-ferrite nanoparticles were synthesized using solution casting technique. Laser pulse irradiations were then applied to modify the structural, optical, and electrical properties of the strips, showing potential for optoelectronic devices.
Article
Materials Science, Multidisciplinary
Yunru Chen, Jialing Wu, Jiajia Wang, Shihui Ma, Hongwei Yu
Summary: This paper investigates the angular non-critical phase-matching second-harmonic-generation properties of Ba3(ZnB5O10)PO4 crystal and explores its potential applications in the output spectral regions.
Article
Materials Science, Multidisciplinary
Qun Jing, Menglin Zhu, Lu Li, Xu Ji, Haiming Duan, Henglei Chen, Ming-Hsien Lee
Summary: The paper introduces two new nonlinear optical materials, MZnPO4 (M = Rb, Cs), synthesized by cation substitution. These materials exhibit a honeycomb-like structure and show mild SHG responses with short absorption edges. The thermal properties, IR spectra, and theoretical calculations of the materials are also discussed.
Article
Materials Science, Multidisciplinary
Camila Ianhez-Pereira, Akhil Kuriakose, Ariano De Giovanni Rodrigues, Ana Luiza Costa Silva, Ottavia Jedrkiewicz, Monica Bollani, Marcio Peron Franco de Godoy
Summary: This study aims to evaluate the crystalline changes induced by ultrafast laser micromachining on manganese oxide thin films using micro-Raman spectroscopy. The results show that laser-writing is effective in locally modifying low-crystallinity films and increasing crystallite sizes, highlighting an interesting approach to evaluate laser-induced structural modifications on metal oxide thin films.
Article
Materials Science, Multidisciplinary
Kamal Bansal, Neeraj Kumar Mishra, Ibrahim Abdullahi, Param Jeet Singh, Mohit Tyagi, Sukhpal Singh
Summary: A novel Sm3+ activated oxyfluoride glass was synthesized and its structure and properties were analyzed. The glass showed potential applications in lasers, optical temperature sensing, and high-energy scintillators.
Article
Materials Science, Multidisciplinary
Xingjian Wang, Zhixu Wu, Jiawei Zhu, Yubin Kang, Mengqiang Cai, Yong Xia, Hui Deng
Summary: Antimony sulfide (Sb2S3) has been investigated as a promising material for visible light photodetectors due to its non-toxicity, stability, and high absorption coefficient. In this study, we systematically explored the impact of key parameters on the performance of Sb2S3 devices using simulation and successfully fabricated self-powered photodetectors with high responsivity and specific detectivity. Furthermore, we demonstrated the application of the Sb2S3 detector in a scanning imaging system, showcasing its potential for developing new types of visible light detectors and imaging systems.
Article
Materials Science, Multidisciplinary
O. I. Sallam, R. M. Ahmed
Summary: The 20NaF-60P2O5-20Na2O fluorophosphate glass systems doped with 3 wt% of CoO and NiO were investigated for their optical parameters before and after gamma irradiation. The presence of defects within the glass network and the addition of transition metals were found to affect the properties of the composites. After irradiation, a red shift was observed in the dissipation factor spectrum. The energy lost at the surface of the composites was larger than the energy lost within the constituent materials. All investigated composites showed insulating behavior and exhibited increased nonlinear optical parameters after irradiation, with the CoO-doped composite showing the highest values.
Article
Materials Science, Multidisciplinary
Fahimeh Ahmadi, Zeinab Ebrahimpour, Asghar Asgari, Bao Van
Summary: In this study, Er3+-doped sulfophosphate glasses containing titanium nanoparticles (TiO2 NPs) and different concentrations of silver nanoparticles (AgNPs) were synthesized. The impact of AgNPs on the physical and structural characteristics, optical absorption and emission features, and photocatalytic activity of the glasses were investigated. The results showed that the addition of AgNPs enhanced the emission intensity of the glasses, with the system containing 0.04 mol% of AgNPs exhibiting optimal performance. Furthermore, the presence of AgNPs and TiO2 NPs in the glass matrix positively affected the photocatalytic performance.
Article
Materials Science, Multidisciplinary
Zhuang Li, Rongfei Huang, Wei Yuan, Shaoqiang Zheng, Wenlu Liao, Huiying Xu, Zhiping Cai
Summary: This study reports the first realization of an 868 nm Pr:YLF laser pumped by an InGaN blue laser diode. The laser achieved a maximum power of 641 mW with stable output and good beam quality. The experimental results were in agreement with theoretical simulations.
Article
Materials Science, Multidisciplinary
Bhishma Karki, Youssef Trabelsi, Amrindra Pal, Sofyan A. Taya, Ram Bharos Yadav
Summary: This study proposes an SF11 Prism- Ag- ZnO nanowires-CeO2-Sensing layer-based surface plasmon resonance sensor for measuring dopamine concentration in human blood. The sensor demonstrates high sensitivity and detection accuracy, and holds significant importance for early diagnosis of neurological diseases.
Article
Materials Science, Multidisciplinary
M. Taoufiq, A. Soussi, A. Elfanaoui, A. Ait Hssi, S. Baoubih, A. Ihlal, K. Bouabid
Summary: In this study, the effect of copper doping within ZnS on glass substrates was investigated through experimental and theoretical approaches. Pure ZnS and Cu-doped ZnS films with varying copper concentrations were deposited on glass substrates using the SILAR technique. The structural, morphological, and optical properties of the films were characterized, and the theoretical FP-LAPW method based on density functional theory was employed to study the properties of copper-doped ZnS.
