{"title":"Optical properties of core-shell nanoparticles and their application for effective absorption, scattering, extinction and filtering solar and optical radiation","authors":"","doi":"10.1016/j.photonics.2024.101312","DOIUrl":"10.1016/j.photonics.2024.101312","url":null,"abstract":"<div><div>The review presents a comprehensive analysis of the latest experimental and theoretical results and achievements related to the optical properties of core-shell nanoparticles (nanoshells) and nanostructured materials containing them for solar and optical radiation applications. Modern nanotechnologies allow producing a variety of core-shell nanoparticles from various metals and materials, with different sizes, shapes and combinations of materials, possessing unique optical properties when immersed in liquid, solid or gaseous media. Among them, it is worth noting nanoparticles with the core-shell structure SiO<sub>2</sub>-Au, Au-SiO<sub>2</sub>, Au-Ag, Ti-TiO<sub>2</sub>, Ni-NiO, NiO-Ni, Cu<sub>2</sub>O-Au, Fe<sub>3</sub>O<sub>4</sub>-Au and others, the properties and areas of applications of which were analyzed. The results of studying the optical properties of various core-shell nanoparticles in a wide range of wavelengths and their parameters are presented and analyzed. The use of nanoparticles selected on the basis of the presented analysis of absorption, scattering and attenuation of optical and solar radiation can be used to develop and implement various devices that provide unique advantages over traditional devices in the control and use of optical radiation. These results can be used to design and apply optical absorbers, scatterers, filters, attenuators and other devices based on them to control and modify radiation properties, especially for high-temperature nanophotonics applications. They can play a decisive role in improving the efficiency of solar and optical energy applications. This review focuses on recent research and achievements, mainly for the years 2020–2024, but also takes into account background papers from previous years.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Triple-coupled normal mode splitting in Fabry-Pérot microcavity contained rectangular hole magnetic metamaterials in THz region","authors":"","doi":"10.1016/j.photonics.2024.101313","DOIUrl":"10.1016/j.photonics.2024.101313","url":null,"abstract":"<div><div>The interaction between light and matter inside a microcavity has been intensively studied for a long time, but most of the research has focused on the coupling between the electric dipole of the material and the electric field inside the cavity. We replaced the material with a metamaterial, focused on its characteristic magnetic response, and studied its interaction with the magnetic field inside a Fabry-Pérot (FP) microcavity. In this study, we utilized the fact that a rectangular hole metamaterial (RH), known as a magnetic current antenna, behaves as a magnetic dipole. This RH also has a high reflectance, so it also functions as a mirror. Taking advantage of this property, we investigated the optical properties of three different FP cavity structures containing RH metamaterials in the THz region. First, we investigated the transmission properties and dispersion relationship by transmission line theory analysis. Next, to fabricate the actual sample, we designed it using the finite differential time domain (FDTD) method and investigated the magnetic field distribution inside the sample. We then fabricated a sample by photolithography and lift-off processes and measured its transmission spectra using THz time-domain spectroscopy. As a result, we found that it was possible to observe triple-coupled normal mode splitting caused by the strong coupling between the magnetic field and the magnetic dipole. This phenomenon does not appear in a strongly coupled system of two coupled oscillators, such as the well-known cavity polariton, which consists of an ordinary electric field and an electric dipole.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inverse opal optical Tamm state for sensing applications","authors":"","doi":"10.1016/j.photonics.2024.101315","DOIUrl":"10.1016/j.photonics.2024.101315","url":null,"abstract":"<div><div>We report the excitation of optical Tamm states (OTS) in inverse opal (IO) - based three-dimensional photonic crystal on a flat metal substrate, validated through both numerical simulations and experimental observations. Large area, uniform Tamm inverse opal (Tamm-IO) structures were fabricated without the use of any corrosive chemicals. Upon infiltration of non-reactive solvents such as methanol and ethanol into the IO, a noticeable shift of the OTS, consistent with our simulations is observed, and the temporal dynamics of the same have been investigated. The experimentally obtained sensitivity is ∼ 110 nm/RIU which is of the same order as the computed value, making the IO OTS to be an attractive sensing tool.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Microwaves in ferromagnetic composites Fe/Epoxy with aggregates of nanoparticles: Theory and experiment","authors":"","doi":"10.1016/j.photonics.2024.101311","DOIUrl":"10.1016/j.photonics.2024.101311","url":null,"abstract":"<div><div>Microwave transmission through plates of a composite material containing spherical Fe nanoparticles in an epoxyamine matrix and reflection from plates have been studied. Measurements were carried out at the frequencies from 26 to 32 GHz in the magnetic fields up to 12 kOe. The ferromagnetic resonance phenomenon in the composite has been investigated. The theory of electromagnetic waves transmitting through a composite material containing ferromagnetic particles, taking into account aggregating the particles, has been developed. A good agreement of calculation results and experimentally obtained field dependences of the transmission and reflection coefficients, as well as microwaves dissipation, has been achieved.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Coupled mode theory-based analytical model of a ring resonator refractive index sensor incorporating bending loss and dispersion","authors":"","doi":"10.1016/j.photonics.2024.101308","DOIUrl":"10.1016/j.photonics.2024.101308","url":null,"abstract":"<div><div>This paper presents an analytical model of a silicon nitride-based 2D ring resonator refractive index (RI) sensor using coupled mode theory (CMT). The proposed model decomposes the ring resonator into two coupling regions and employs coupled-mode equations to describe input and output amplitudes via scattering matrix analysis. The proposed sensor, operating with varying refractive indices in the background cladding, demonstrates a sensitivity of 218 nm/RIU and a total quality factor of 1198. A comprehensive analysis of the bending loss in the proposed sensor is conducted, elucidating its impact on sensitivity, coupling quality factor, and intrinsic quality factor. This analysis aids in the selection of optimal ring resonator parameters, including radius, width, and gap, to achieve superior sensing performance. Furthermore, the paper examines the effect of dispersion on sensitivity and quality and compares the results with those obtained from CMT-based silicon core ring resonator and disk resonator RI sensors. This study provides valuable insights for the design and optimization of high-performance silicon nitride-based RI sensors for various applications.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preface to the special issue in micro and nano structured mid-IR to terahertz materials and devices","authors":"","doi":"10.1016/j.photonics.2024.101299","DOIUrl":"10.1016/j.photonics.2024.101299","url":null,"abstract":"<div><p>This is an introduction to the special issue “Micro and nano structured mid-IR to Terahertz materials and devices” which aims to cover recent developments in terms of photonics devices operating from the mid-infrared to terahertz wavelength ranges, with possible applications in spectroscopy, sensing, or communications.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141838838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corrigendum to “High sensitivity plasmonic refractive index sensor for early anaemia detection” [Photonics Nanostruct. - Fundam. Appl. 58(01) (2024) 101235]","authors":"","doi":"10.1016/j.photonics.2024.101287","DOIUrl":"10.1016/j.photonics.2024.101287","url":null,"abstract":"","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1569441024000622/pdfft?md5=50e50fd1804dc4ed78b7192971f5cf54&pid=1-s2.0-S1569441024000622-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142147839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SPR humidity dynamic monitoring method via PVA sensing membrane thickness variation and image processing techniques","authors":"","doi":"10.1016/j.photonics.2024.101301","DOIUrl":"10.1016/j.photonics.2024.101301","url":null,"abstract":"<div><p>Humidity monitoring is paramount in diverse applications, industrial, and medical applications. Surface Plasmon Resonance (SPR) is an optical detection technique capable of sensing various environmental parameters through changes in reflected optical spectra and has garnered significant attention. Typically, SPR sensing employs a single-point detection strategy with the sample at a fixed concentration to achieve optimal sensitivity, limiting its application in dynamic environmental testing. This study proposes an image-based SPR humidity monitoring method, integrating SPR with image processing, enabling dynamic parameter reconstruction, and achieving high responsiveness. Au-PVA is used as a sensing film. To attain the best sensing film thickness, sensing film thicknesses ranging from 94.0 <span><math><mrow><mi>n</mi><mi>m</mi></mrow></math></span> to 243.3 <span><math><mrow><mi>n</mi><mi>m</mi></mrow></math></span> were tested. Through optimizing film thickness and image data processing, high precision and dynamic responsiveness were achieved. Experimental results demonstrate a response time of 84 <span><math><mrow><mi>m</mi><mi>s</mi></mrow></math></span> and an average relative prediction error of 1.57 % for the sensor. Our research holds significant promise for dynamic and accurate humidity detection.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of Cr2Si2Te6 saturable absorber in Er-doped fiber laser for generating dual-wavelength mode-locked pulse","authors":"","doi":"10.1016/j.photonics.2024.101300","DOIUrl":"10.1016/j.photonics.2024.101300","url":null,"abstract":"<div><p>As a typical two-dimensional (2D) ferromagnetic insulator (FI), the Cr<sub>2</sub>Si<sub>2</sub>Te<sub>6</sub> (CST) has performance ferromagnetic properties. The previous investigation has shown that quantum mechanical simulation can get structure and electronic properties of CST, and the indirect gap value of CST is 0.6 eV by establishing its layered calculation. It implies that the CST is an excellent optical modulator due to larger infrared radiation absorption interval. Based on that, some groups conducted the research of fiber laser based on CST saturable absorber (SA). However, the exploration and application of 2D CST in optics is still in the early stage. In this investigation, the CST was utilized as a SA in an Er-doped fiber laser. The dual-wavelength mode-locked pulse could be observed when the pump power was adjusted from 25 to 140 mW. The CST was applied in Er-doped fiber as SA for generating dual-wavelength mode-locked pulse for the first time. It exhibits performance optical properties that provide a significant reference for exploring the application of 2D materials in ultrafast laser.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A comparative study of the photonic crystals-based cavities and usage in all-optical-amplification phenomenon","authors":"","doi":"10.1016/j.photonics.2024.101298","DOIUrl":"10.1016/j.photonics.2024.101298","url":null,"abstract":"<div><p>Optical technology has seen a revival from the previous decade, in terms of innovations and research, especially relating to optical integrated circuits. Similarly, Photonic Crystals (PCs) are one of the main contenders for the purpose. Therefore, this research work implicates different arrangements of the 3-Dimensional PC units based on the employment of a varying radius PC-cavity and its position i.e., at the beginning and within the middle of the PC-lattice. The effects of these PC-cavities are studied, investigating higher shifting in resonant wavelength, a narrower linewidth around 0.0061 µm and a quality factor of 99.59, comprising of a PC-cavity of radius 0.300 µm using input signal only i.e., coupled into the optical structure using the phenomenon of the Guided-mode-resonances (GMR). The structures are computed using an open-source FDTD platform, employing a stripe-model-based structure utilizing the Periodic Boundary Condition to save time and computational resources and later the PML for the realization of the Finite models. Moreover, the concluded structures based on the position of the PC-cavity, are demonstrated for the design of the all-optical-amplification device, executing a control signal reporting an 8 % of the amplification in the output of the input signal.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1569441024000737/pdfft?md5=782a7f7b90168d7b428f874e925401d4&pid=1-s2.0-S1569441024000737-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141951255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}