Pub Date : 2024-10-26DOI: 10.1016/j.photonics.2024.101323
Ehsan Beiranvand, Mohammad Danaie, Majid Afsahi
This study introduces a mode splitter through a novel coupling mechanism between photonic crystal waveguides and metal-insulator-metal plasmonic waveguides. Notably, the proposed structure demonstrates the capability to excite both odd and even modes within the photonic crystal waveguide. Numerical simulations of this structure were conducted using the finite difference time domain (FDTD) method. Our numerical analysis reveals an exceptional transmittance of 95 % at the waveguide intersection for the wavelength of 1550 nm. The successful coupling of plasmonic waveguides to photonic crystal waveguides unveils a vast array of opportunities for designing innovative devices that harness the synergistic potential arising from the distinctive characteristics of surface plasmons and photonic crystals. An inherent advantage of this design lies in its simple topology, enabling cost-effective and precise manufacturing processes. This device offers the ability to accurately separate and identify output modes. Additionally, we utilize this coupler in the design of a highly efficient power divider that not only achieves high transmittance but also provides adjustable control over the output power level.
{"title":"A hybrid mode splitter for separation and excitation of photonic crystal odd and even modes using plasmonic waveguides","authors":"Ehsan Beiranvand, Mohammad Danaie, Majid Afsahi","doi":"10.1016/j.photonics.2024.101323","DOIUrl":"10.1016/j.photonics.2024.101323","url":null,"abstract":"<div><div>This study introduces a mode splitter through a novel coupling mechanism between photonic crystal waveguides and metal-insulator-metal plasmonic waveguides. Notably, the proposed structure demonstrates the capability to excite both odd and even modes within the photonic crystal waveguide. Numerical simulations of this structure were conducted using the finite difference time domain (FDTD) method. Our numerical analysis reveals an exceptional transmittance of 95 % at the waveguide intersection for the wavelength of 1550 nm. The successful coupling of plasmonic waveguides to photonic crystal waveguides unveils a vast array of opportunities for designing innovative devices that harness the synergistic potential arising from the distinctive characteristics of surface plasmons and photonic crystals. An inherent advantage of this design lies in its simple topology, enabling cost-effective and precise manufacturing processes. This device offers the ability to accurately separate and identify output modes. Additionally, we utilize this coupler in the design of a highly efficient power divider that not only achieves high transmittance but also provides adjustable control over the output power level.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101323"},"PeriodicalIF":2.5,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555644","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}
Pub Date : 2024-10-24DOI: 10.1016/j.photonics.2024.101322
P. Manivannan, Zachariah C. Alex
This paper presents an experimental study of a fiber-optic-based acetone sensor and its temperature effects for use as a breath analyzer to detect acetone in exhaled breath. The study employs fiber optic evanescent wave-based acetone sensing, utilizing sputter coated Aluminium Oxide (Al2O3)-coated probes fabricated via clad modification technique. The optical fibers were coated with Al2O3 to achieve thicknesses of 247.03 nm, 334.05 nm, and 468.75 nm. The sensor probes were characterized using, Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), Ultraviolet-Visible (UV-Vis) Spectroscopy, and Spectroscopic Ellipsometry for uniformity, elemental, optical constants, and thickness of the Al2O3. The spectral responses of the probes were analyzed for acetone concentrations ranging from 0 to 100 ppm, with temperature modulation from room temperature to 100 °C. The probe with a ∼334 nm thick Al2O3 coating exhibited the highest response, reaching 6.2 % at 100 °C in 100 ppm acetone. Linear regression revealed that the ∼334 nm coated probe had the highest sensitivity at 5.98 counts/ppm. The sensor showed response and recovery times of approximately 12 and 17 seconds, respectively. This study underscores the stability and repeatability of temperature-modulated Al2O3-coated fiber optic sensors for selective acetone detection in various non-invasive applications.
{"title":"Temperature-modulated acetone monitoring using Al2O3-coated evanescent wave fiber optic sensors","authors":"P. Manivannan, Zachariah C. Alex","doi":"10.1016/j.photonics.2024.101322","DOIUrl":"10.1016/j.photonics.2024.101322","url":null,"abstract":"<div><div>This paper presents an experimental study of a fiber-optic-based acetone sensor and its temperature effects for use as a breath analyzer to detect acetone in exhaled breath. The study employs fiber optic evanescent wave-based acetone sensing, utilizing sputter coated Aluminium Oxide (Al<sub>2</sub>O<sub>3</sub>)-coated probes fabricated via clad modification technique. The optical fibers were coated with Al<sub>2</sub>O<sub>3</sub> to achieve thicknesses of 247.03 nm, 334.05 nm, and 468.75 nm. The sensor probes were characterized using, Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), Ultraviolet-Visible (UV-Vis) Spectroscopy, and Spectroscopic Ellipsometry for uniformity, elemental, optical constants, and thickness of the Al<sub>2</sub>O<sub>3</sub>. The spectral responses of the probes were analyzed for acetone concentrations ranging from 0 to 100 ppm, with temperature modulation from room temperature to 100 °C. The probe with a ∼334 nm thick Al<sub>2</sub>O<sub>3</sub> coating exhibited the highest response, reaching 6.2 % at 100 °C in 100 ppm acetone. Linear regression revealed that the ∼334 nm coated probe had the highest sensitivity at 5.98 counts/ppm. The sensor showed response and recovery times of approximately 12 and 17 seconds, respectively. This study underscores the stability and repeatability of temperature-modulated Al<sub>2</sub>O<sub>3</sub>-coated fiber optic sensors for selective acetone detection in various non-invasive applications.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101322"},"PeriodicalIF":2.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555643","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}
This paper focuses on the use of direct laser writing method in fabricating three-dimensional biocompatible scaffolds that emulate the extracellular matrix. The interaction between HEK 293 cells and these cage-like scaffolds, particularly the effect of pore size on cell invasion, is explored in detail. Our study underscores the influence of scaffold architecture on cellular behavior and highlights the potential of direct laser writing technology in creating complex 3D scaffolds. The insights gleaned from this research could be invaluable in future applications such as tissue engineering, regenerative medicine, and drug delivery.
{"title":"Cage-like micro-scaffolds fabricated by DLW method for cell investigation","authors":"A.V. Pisarenko , D.S. Burkatovskii , D.A. Kolymagin , D.A. Chubich , V.I. Borshchevskiy , A.G. Vitukhnovsky","doi":"10.1016/j.photonics.2024.101321","DOIUrl":"10.1016/j.photonics.2024.101321","url":null,"abstract":"<div><div>This paper focuses on the use of direct laser writing method in fabricating three-dimensional biocompatible scaffolds that emulate the extracellular matrix. The interaction between HEK 293 cells and these cage-like scaffolds, particularly the effect of pore size on cell invasion, is explored in detail. Our study underscores the influence of scaffold architecture on cellular behavior and highlights the potential of direct laser writing technology in creating complex 3D scaffolds. The insights gleaned from this research could be invaluable in future applications such as tissue engineering, regenerative medicine, and drug delivery.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101321"},"PeriodicalIF":2.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536113","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}
Pub Date : 2024-10-09DOI: 10.1016/j.photonics.2024.101317
Shilin Ma , Xianwu Mi , Xiulong Bian
A bifunctional terahertz metamaterial device with switchable properties between transmission and broadband absorption is proposed. The simulated results show that the switchable functional characteristics of the bifunctional terahertz metamaterial device can be achieved by taking advantage of the phase transition property of VO2. When VO2 is in the insulating state, there are transmission spectra with a maximum transmittance of 90 % and a minimum transmittance of 25 % in the frequency range from 1 THz to 10 THz. Meanwhile, transmission spectra be adjusted by controlling the Fermi level of graphene. When VO2 is in the fully metal state, the broadband absorptivity achieves over 90 % in the frequency range from 2.54 THz to 7.65 THz. Not only that, the absorption spectra can be continuously adjusted by controlling the conductivity of VO2 from 20 to 200000 S/m. Alternatively, the proposed bifunctional terahertz metamaterial device can work and show the same absorption spectra when the conductivity of VO2 is 200000 S/m under TM and TE polarized normal incidences. Our current research work has a potential to provide a valuable reference for the advancement of transmissive and broadband absorbent metamaterial devices in the terahertz range.
{"title":"Bifunctional terahertz metamaterial device with switchable properties between transmission and broadband absorption","authors":"Shilin Ma , Xianwu Mi , Xiulong Bian","doi":"10.1016/j.photonics.2024.101317","DOIUrl":"10.1016/j.photonics.2024.101317","url":null,"abstract":"<div><div>A bifunctional terahertz metamaterial device with switchable properties between transmission and broadband absorption is proposed. The simulated results show that the switchable functional characteristics of the bifunctional terahertz metamaterial device can be achieved by taking advantage of the phase transition property of VO<sub>2</sub>. When VO<sub>2</sub> is in the insulating state, there are transmission spectra with a maximum transmittance of 90 % and a minimum transmittance of 25 % in the frequency range from 1 THz to 10 THz. Meanwhile, transmission spectra be adjusted by controlling the Fermi level of graphene. When VO<sub>2</sub> is in the fully metal state, the broadband absorptivity achieves over 90 % in the frequency range from 2.54 THz to 7.65 THz. Not only that, the absorption spectra can be continuously adjusted by controlling the conductivity of VO<sub>2</sub> from 20 to 200000 S/m. Alternatively, the proposed bifunctional terahertz metamaterial device can work and show the same absorption spectra when the conductivity of VO<sub>2</sub> is 200000 S/m under TM and TE polarized normal incidences. Our current research work has a potential to provide a valuable reference for the advancement of transmissive and broadband absorbent metamaterial devices in the terahertz range.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101317"},"PeriodicalIF":2.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446927","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}
Pub Date : 2024-10-09DOI: 10.1016/j.photonics.2024.101314
Neelam Singh , Reshmi Dhara , Sanjeev Yadav
This study presents dual-band Terahertz (THz) metamaterial absorbers (MA) designed with square resonators for sensing applications. The absorber is made up of a plasmonic ring resonator, a middle polyimide layer, and a lower metal plate, which enhances its absorption capabilities. The position of annular strips and patch units is strategically adjusted to tune and optimize the absorber’s performance precisely. The proposed metamaterial (MA) consistently absorbs over 99 % within the frequency range from 1.4 to 2.8 THz at 1.6 THz for peak-1 and 2.3 THz for peak-2. The peaks labeled as ‘f1’ and ‘f2’ have a spectral width of 0.02 THz and high-quality factors (Q-factors) of 23 for peak-1 and 29 for peak-2, respectively. This makes them remarkably sensitive to variations in the environmental refractive index (RI). It is important to observe that the refractive index of most samples falls within the range of 1.0–2.0, highlighting the potential applications of this sensor.
{"title":"Design and optimization of a polarization-insensitive terahertz metamaterial absorber for sensing applications","authors":"Neelam Singh , Reshmi Dhara , Sanjeev Yadav","doi":"10.1016/j.photonics.2024.101314","DOIUrl":"10.1016/j.photonics.2024.101314","url":null,"abstract":"<div><div>This study presents dual-band Terahertz (THz) metamaterial absorbers (MA) designed with square resonators for sensing applications. The absorber is made up of a plasmonic ring resonator, a middle polyimide layer, and a lower metal plate, which enhances its absorption capabilities. The position of annular strips and patch units is strategically adjusted to tune and optimize the absorber’s performance precisely. The proposed metamaterial (MA) consistently absorbs over 99 % within the frequency range from 1.4 to 2.8 THz at 1.6 THz for peak-1 and 2.3 THz for peak-2. The peaks labeled as ‘f1’ and ‘f2’ have a spectral width of 0.02 THz and high-quality factors (Q-factors) of 23 for peak-1 and 29 for peak-2, respectively. This makes them remarkably sensitive to variations in the environmental refractive index (RI). It is important to observe that the refractive index of most samples falls within the range of 1.0–2.0, highlighting the potential applications of this sensor.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101314"},"PeriodicalIF":2.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425606","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}
A study of constraints on reflection and transmission coefficients for Babinet-complementary metasurfaces is presented in this work. These coefficients have been found to describe circular paths in the complex plane, whose centers and radii are affected by losses. Additionally, it has been shown that it is possible to fully control the cross-polarization coefficients by rotating the metasurface with respect to the polarization direction. Our findings have been verified through numerical simulations and experiments. The properties discussed in this paper could be useful in limiting the types of possible responses of metasurfaces.
{"title":"Constraints on co- and cross-polarization reflection and transmission of Babinet-complementary metasurfaces","authors":"A.G. Zhuravlev , L.M. Pulido-Mancera , A.D. Sayanskiy , V.A. Lenets , S.B. Glybovski , J.D. Baena","doi":"10.1016/j.photonics.2024.101320","DOIUrl":"10.1016/j.photonics.2024.101320","url":null,"abstract":"<div><div>A study of constraints on reflection and transmission coefficients for Babinet-complementary metasurfaces is presented in this work. These coefficients have been found to describe circular paths in the complex plane, whose centers and radii are affected by losses. Additionally, it has been shown that it is possible to fully control the cross-polarization coefficients by rotating the metasurface with respect to the polarization direction. Our findings have been verified through numerical simulations and experiments. The properties discussed in this paper could be useful in limiting the types of possible responses of metasurfaces.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101320"},"PeriodicalIF":2.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536112","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}
Pub Date : 2024-10-05DOI: 10.1016/j.photonics.2024.101319
Mohammad Ashraful Haque , Rummanur Rahad , Md. Omar Faruque , Abu S.M. Mohsin
This paper introduces a novel magnetic field sensor (MFS) that utilizes a metal-insulator-metal (MIM) waveguide integrated with a resonator structure and incorporates water-based Fe3O4 magnetic fluid. The sensor uses titanium nitride (TiN) as the plasmonic material which offers numerous advantages over conventional noble plasmonic materials. The sensor takes advantage of the tunable optical properties of the magnetic fluid and TiN to detect changes in the external magnetic field and quantify the magnetic field strength which has been demonstrated using the Finite Element Method (FEM). Our proposed MFS exhibits a high sensitivity of 11.97 pm/Oe, a narrow-band full-width half maximum of 93.66 nm, and a resolution of 8.36 × 10−4 Oe. The sensor is also compatible with complementary metal oxide semiconductor (CMOS) fabrication techniques, which enables chip-scale integration and low-cost production. The sensor can be used for various applications in navigation, military, space, healthcare, and beyond.
{"title":"CMOS-compatible plasmonic magnetic field sensor: An alternative approach using ultra-compact MIM configuration","authors":"Mohammad Ashraful Haque , Rummanur Rahad , Md. Omar Faruque , Abu S.M. Mohsin","doi":"10.1016/j.photonics.2024.101319","DOIUrl":"10.1016/j.photonics.2024.101319","url":null,"abstract":"<div><div>This paper introduces a novel magnetic field sensor (MFS) that utilizes a metal-insulator-metal (MIM) waveguide integrated with a resonator structure and incorporates water-based Fe<sub>3</sub>O<sub>4</sub> magnetic fluid. The sensor uses titanium nitride (<em>TiN</em>) as the plasmonic material which offers numerous advantages over conventional noble plasmonic materials. The sensor takes advantage of the tunable optical properties of the magnetic fluid and <em>TiN</em> to detect changes in the external magnetic field and quantify the magnetic field strength which has been demonstrated using the Finite Element Method (FEM). Our proposed MFS exhibits a high sensitivity of 11.97 pm/Oe, a narrow-band full-width half maximum of 93.66 nm, and a resolution of 8.36 × 10<sup>−4</sup> Oe. The sensor is also compatible with complementary metal oxide semiconductor (CMOS) fabrication techniques, which enables chip-scale integration and low-cost production. The sensor can be used for various applications in navigation, military, space, healthcare, and beyond.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101319"},"PeriodicalIF":2.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425605","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}
Pub Date : 2024-10-03DOI: 10.1016/j.photonics.2024.101318
Vitalii A. Pavlov , Andrey A. Belov , Andrey D. Sayanskiy , Daniil A. Vabishchevich
The paper describes a reflective intelligent surface (RIS) assisted by computer vision (CV). A RIS can reflect the transmitter’s signal into shadow regions with low signal strength thus increasing the coverage area of a communication system. CV assists the RIS in searching for and tracking potential users. Information about user’s position is used to direct the RIS beam towards the user. Operation of CV algorithms and their integration in the RIS control loop is demonstrated. Increase in the received signal power of 15–20 dB in non-line of sight (NLOS) situations due to RIS operation is achieved. The system has a low cost and power consumption.
{"title":"Reconfigurable intelligent surface assisted by computer vision for increasing coverage area in mobile communication systems","authors":"Vitalii A. Pavlov , Andrey A. Belov , Andrey D. Sayanskiy , Daniil A. Vabishchevich","doi":"10.1016/j.photonics.2024.101318","DOIUrl":"10.1016/j.photonics.2024.101318","url":null,"abstract":"<div><div>The paper describes a reflective intelligent surface (RIS) assisted by computer vision (CV). A RIS can reflect the transmitter’s signal into shadow regions with low signal strength thus increasing the coverage area of a communication system. CV assists the RIS in searching for and tracking potential users. Information about user’s position is used to direct the RIS beam towards the user. Operation of CV algorithms and their integration in the RIS control loop is demonstrated. Increase in the received signal power of 15–20 dB in non-line of sight (NLOS) situations due to RIS operation is achieved. The system has a low cost and power consumption.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101318"},"PeriodicalIF":2.5,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425603","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}
Pub Date : 2024-09-27DOI: 10.1016/j.photonics.2024.101316
Alexey Verbitskiy, Alexey Yulin
The paper provides an analytical and numerical investigation of the dynamics of a one-dimensional chain of coupled optical resonators with conservative cubic nonlinearity and the gain saturated by nonlinear losses. The linear dependency of the resonator eigenfrequencies on their indexes makes it possible to use Wannier-Stark states as lasing modes. Numerical simulations have shown that the dependency of the resonant frequencies on the light intensity strongly affects the stability of Wannier-Stark states. To explain the observed destabilization of monochromatic lasing based on Wannier-Stark states a simple perturbation theory has been developed and compared with the data obtained in the numerical simulations.
{"title":"Kerr nonlinearity effect on the stability of Wannier-Stark states in active optical systems","authors":"Alexey Verbitskiy, Alexey Yulin","doi":"10.1016/j.photonics.2024.101316","DOIUrl":"10.1016/j.photonics.2024.101316","url":null,"abstract":"<div><div>The paper provides an analytical and numerical investigation of the dynamics of a one-dimensional chain of coupled optical resonators with conservative cubic nonlinearity and the gain saturated by nonlinear losses. The linear dependency of the resonator eigenfrequencies on their indexes makes it possible to use Wannier-Stark states as lasing modes. Numerical simulations have shown that the dependency of the resonant frequencies on the light intensity strongly affects the stability of Wannier-Stark states. To explain the observed destabilization of monochromatic lasing based on Wannier-Stark states a simple perturbation theory has been developed and compared with the data obtained in the numerical simulations.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"62 ","pages":"Article 101316"},"PeriodicalIF":2.5,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425604","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}
Pub Date : 2024-09-23DOI: 10.1016/j.photonics.2024.101312
V.K. Pustovalov , L.G. Astafyeva , W. Fritzsche
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 SiO2-Au, Au-SiO2, Au-Ag, Ti-TiO2, Ni-NiO, NiO-Ni, Cu2O-Au, Fe3O4-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.
{"title":"Optical properties of core-shell nanoparticles and their application for effective absorption, scattering, extinction and filtering solar and optical radiation","authors":"V.K. Pustovalov , L.G. Astafyeva , W. Fritzsche","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":"62 ","pages":"Article 101312"},"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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号