1
|
Corrêa CA, More-Chevalier J, Hruška P, Poupon M, Novotný M, Minárik P, Hubík P, Lukáč F, Fekete L, Prokop D, Hanuš J, Valenta J, Fitl P, Lančok J. Microstructure and physical properties of black-aluminum antireflective films. RSC Adv 2024; 14:15220-15231. [PMID: 38737968 PMCID: PMC11082876 DOI: 10.1039/d4ra00396a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 05/02/2024] [Indexed: 05/14/2024] Open
Abstract
The microstructure and physical properties of reflective and black aluminum were compared for layers of different thicknesses deposited by magnetron sputtering on fused silica substrates. Reflective Al layers followed the Volmer-Weber growth mechanism classically observed for polycrystalline metal films. On the contrary, the extra nitrogen gas used to deposit the black aluminum layers modified the growth mechanism and changed the film morphologies. Nitrogen cumulated in the grain boundaries, favoring the pinning effect and stopping crystallite growth. High defect concentration, especially vacancies, led to strong columnar growth. Properties reported for black aluminum tend to be promising for sensors and emissivity applications.
Collapse
Affiliation(s)
- Cinthia Antunes Corrêa
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
- Charles University, Faculty of Mathematics and Physics Ke Karlovu 2027/3 121 16 Prague 2 Czech Republic
| | - Joris More-Chevalier
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
| | - Petr Hruška
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
- Charles University, Faculty of Mathematics and Physics Ke Karlovu 2027/3 121 16 Prague 2 Czech Republic
| | - Morgane Poupon
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
| | - Michal Novotný
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
| | - Peter Minárik
- Charles University, Faculty of Mathematics and Physics Ke Karlovu 2027/3 121 16 Prague 2 Czech Republic
| | - Pavel Hubík
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
| | - František Lukáč
- Institute of Plasma Physics of the Czech Academy of Sciences Za Slovankou 1782/3 182 00 Prague 8 Czech Republic
| | - Ladislav Fekete
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
| | - Dejan Prokop
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
- Charles University, Faculty of Mathematics and Physics Ke Karlovu 2027/3 121 16 Prague 2 Czech Republic
| | - Jan Hanuš
- Charles University, Faculty of Mathematics and Physics Ke Karlovu 2027/3 121 16 Prague 2 Czech Republic
| | - Jan Valenta
- Charles University, Faculty of Mathematics and Physics Ke Karlovu 2027/3 121 16 Prague 2 Czech Republic
| | - Přemysl Fitl
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
- University of Chemistry and Technology, Department of Physics and Measurements Technická 5 166 28 Prague 6 Czech Republic
| | - Ján Lančok
- Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 182 00 Prague 8 Czech Republic
| |
Collapse
|
2
|
Tsai ST, Huang JL, Ke PX, Yang CF, Chen HC. Analysis of an Ultra-Wideband, Perfectly Absorptive Fractal Absorber with a Central Square Nanopillar in a Cylindrical Structure with a Square Hollow. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6898. [PMID: 37959495 PMCID: PMC10648683 DOI: 10.3390/ma16216898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/20/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023]
Abstract
In this study, a fractal absorber was designed to enhance light absorptivity and improve the efficiency of converting solar energy into electricity for a range of solar energy technologies. The absorber consisted of multiple layers arranged from bottom to top, and the bottom layer was made of Ti metal, followed by a thin layer of MgF2 atop it. Above the two layers, a structure comprising square pillars formed by three layers of Ti/MgF2/Ti was formed. This pillar was encompassed by a square hollow with cylindrical structures made of Ti material on the exterior. The software utilized for this study was COMSOL Multiphysics® (version 6.0). This study contains an absorption spectrum analysis of the various components of the designed absorber system, confirming the notion that achieving ultra-wideband and perfect absorption resulted from the combination of the various components. A comprehensive analysis was also conducted on the width of the central square pillar, and the analysis results demonstrate the presence of several remarkable optical phenomena within the investigated structure, including propagating surface plasmon resonance, localized surface plasmon resonance, Fabry-Perot cavity resonance, and symmetric coupling plasma modes. The optimal model determined through this software demonstrated that broadband absorption in the range of 276 to 2668 nm, which was in the range of UV-B to near-infrared, exceeded 90.0%. The average absorption rate in the range of 276~2668 nm reached 0.965, with the highest achieving a perfect absorptivity of 99.9%. A comparison between absorption with and without outer cylindrical structures revealed that the resonance effects significantly enhanced absorption efficiency, as evidenced by a comparison of electric field distributions.
Collapse
Affiliation(s)
- Shang-Te Tsai
- Business School, Yulin Normal University, Yulin 537000, China;
| | - Jo-Ling Huang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan; (J.-L.H.); (P.-X.K.)
| | - Pei-Xiu Ke
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan; (J.-L.H.); (P.-X.K.)
| | - Cheng-Fu Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 811, Taiwan; (J.-L.H.); (P.-X.K.)
- Department of Aeronautical Engineering, Chaoyang University of Technology, Taichung 413, Taiwan
| | - Hung-Cheng Chen
- Prospective Technology of Electrical Engineering and Computer Science, National Chin-Yi University of Technology, Taichung 411, Taiwan
| |
Collapse
|
3
|
Kim YH, Kim SG, Lee S, Cheon M, Kim SJ, Nam K, Lamichhane B, Park SH, Jung MH, Kim JS, Seo YS, Ha T, Hwang J, Jeong HY, Lee Y, Lee YH, Kim YM, Jeong SY. Self-Oxidation Resistance of the Curved Surface of Achromatic Copper. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210564. [PMID: 37548080 DOI: 10.1002/adma.202210564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 07/29/2023] [Indexed: 08/08/2023]
Abstract
Copper surfaces that exhibit a wide range of achromatic colors while still metallic have not been studied, despite advancements in antireflection coatings. A series of achromatic copper films grown with [111] preferred orientation by depositing 3D porous nanostructures is introduced via coherent/incoherent atomic sputtering epitaxy. The porous copper nanostructures self-regulate the giant oxidation resistance by constructing a curved surface that generates a series of monoatomic steps, followed by shrinkage of the lattice spacing of one or two surface layers. First-principles calculations confirm that these structural components cooperatively increase the energy barrier against oxygen penetration. The achromaticity of the single-crystalline porous copper films is systematically tuned by geometrical parameters such as pore size distribution and 3D linkage. The optimized achromatic copper films with high oxidation resistance show an unusual switching effect between superhydrophilicity and superhydrophobicity. The tailored 3D porous nanostructures can be a candidate material for numerous applications, such as antireflection coatings, microfluidic devices, droplet tweezers, and reversible wettability switches.
Collapse
Affiliation(s)
- Young-Hoon Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Seong-Gon Kim
- Department of Physics and Astronomy, Mississippi State University, Starkville, MS, 39762, USA
| | - Seunghun Lee
- Department of Physics, Pukyong National University, Busan, 48513, Republic of Korea
| | - Miyeon Cheon
- Crystal Bank Research Institute, Pusan National University, Busan, 46241, Republic of Korea
| | - Su Jae Kim
- Crystal Bank Research Institute, Pusan National University, Busan, 46241, Republic of Korea
| | - Kideuk Nam
- Department of Physics, Pukyong National University, Busan, 48513, Republic of Korea
| | - Bipin Lamichhane
- Department of Physics and Astronomy, Mississippi State University, Starkville, MS, 39762, USA
| | - Sung Heum Park
- Department of Physics, Pukyong National University, Busan, 48513, Republic of Korea
| | - Min-Hyoung Jung
- Department of Energy Science, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Ji-Soo Kim
- Gumi Electronics and Information Technology Research Institute (GERI), Gumi, 39171, Republic of Korea
| | - Yu-Seong Seo
- Department of Physics, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Taewoo Ha
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science, Suwon, 16419, Republic of Korea
| | - Jungseek Hwang
- Department of Physics, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Hu Young Jeong
- Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Yusil Lee
- Crystal Bank Research Institute, Pusan National University, Busan, 46241, Republic of Korea
| | - Young Hee Lee
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science, Suwon, 16419, Republic of Korea
| | - Young-Min Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science, Suwon, 16419, Republic of Korea
| | - Se-Young Jeong
- Department of Optics and Mechatronics Engineering, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan, 46241, Republic of Korea
| |
Collapse
|
4
|
Kim YH, Kim SG, Lee S, Cheon M, Kim SJ, Jeong SY, Kim YM. Self-regulating Oxidation Resistance at Rough Surface of Achromatic Copper. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:140-141. [PMID: 37613572 DOI: 10.1093/micmic/ozad067.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Young-Hoon Kim
- Department of Energy Science, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Seong-Gon Kim
- Department of Physics and Astronomy, Mississippi State University, Mississippi, MS, United States
| | - Seunghun Lee
- Department of Physics, Pukyong National University, Busan, Republic of Korea
| | - Miyeon Cheon
- Crystal Bank Research Institute, Pusan National University, Busan, Republic of Korea
| | - Su Jae Kim
- Crystal Bank Research Institute, Pusan National University, Busan, Republic of Korea
| | - Se-Young Jeong
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan, Republic of Korea
| | - Young-Min Kim
- Department of Energy Science, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| |
Collapse
|
5
|
Nishijima Y, Kimura S, Takeshima Y, Juodkazis S. Metasurfaces as Energy Valves for Sustainable Energy Management. MICROMACHINES 2022; 13:1769. [PMID: 36296122 PMCID: PMC9609501 DOI: 10.3390/mi13101769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Control of light absorption and transmission by metal-insulator-metal (MIM) metasurfaces are promising for applications in optical windows. This study shows the realization of photo-thermal energy conversion for radiative cooling by MIM metasurfaces with thin metal substrate and Indium-Tin-Oxide (ITO). High transparency of ITO at visible wavelengths and high absorption at mid-infrared wavelengths were realized for future applications of efficient cooling or heating applicable for living and working spaces. The MIM (ITO/CaF2/ITO) metasurface was patterned with low-resolution photo-lithography as a demonstration of further simplification and possible scalability of the patterning for practical window applications.
Collapse
Affiliation(s)
- Yoshiaki Nishijima
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
- Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Syunya Kimura
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yu Takeshima
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Saulius Juodkazis
- Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Melbourne, VIC 3122, Australia
- WRH Program International Research Frontiers Initiative (IRFI) Tokyo Institute of Technology, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| |
Collapse
|
6
|
Nishijima Y, To N, Balčytis A, Juodkazis S. Absorption and scattering in perfect thermal radiation absorber-emitter metasurfaces. OPTICS EXPRESS 2022; 30:4058-4070. [PMID: 35209651 DOI: 10.1364/oe.447885] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
Detailed spectral analysis of radiation absorption and scattering behaviors of metasurfaces was carried out via finite-difference time-domain (FDTD) photonic simulations. It revealed that, for typical metal-insulator-metal (MIM) nanodisc metasurfaces, absorbance and scattering cross-sections exhibit a ratio of σabs/σsca = 1 at the absorption peak spectral position. This relationship was likewise found to limit the attainable photo-thermal conversion efficiency in experimental and application contexts. By increasing the absorption due to optical materials, such as Cr metal nano-films typically used as an adhesion layer, it is possible to control the total absorption efficiency η = σabs/σsca and to make it the dominant extinction mechanism. This guided the design of MIM metasurfaces tailored for near-perfect-absorption and emission of thermal radiation. We present the fabrication as well as the numerical and experimental spectral characterisation of such optical surfaces.
Collapse
|
7
|
NISHIJIMA Y. Development of Mid-infrared Plasmonics and Thier Sensor Applicatons. BUNSEKI KAGAKU 2022. [DOI: 10.2116/bunsekikagaku.71.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yoshiaki NISHIJIMA
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University
| |
Collapse
|
8
|
Kumagai T, To N, Balčytis A, Seniutinas G, Juodkazis S, Nishijima Y. Kirchhoff's Thermal Radiation from Lithography-Free Black Metals. MICROMACHINES 2020; 11:mi11090824. [PMID: 32872613 PMCID: PMC7570237 DOI: 10.3390/mi11090824] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 01/21/2023]
Abstract
Lithography-free black metals composed of a nano-layered stack of materials are attractive not only due to their optical properties but also by virtue of fabrication simplicity and the cost reduction of devices based on such structures. We demonstrate multi-layer black metal layered structures with engineered electromagnetic absorption in the mid-infrared (MIR) wavelength range. Characterization of thin SiO2 and Si films sandwiched between two Au layers by way of experimental electromagnetic radiation absorption and thermal radiation emission measurements as well as finite difference time domain (FDTD) numerical simulations is presented. Comparison of experimental and simulation data derived optical properties of multi-layer black metals provide guidelines for absorber/emitter structure design and potential applications. In addition, relatively simple lithography-free multi-layer structures are shown to exhibit absorber/emitter performance that is on par with what is reported in the literature for considerably more elaborate nano/micro-scale patterned metasurfaces.
Collapse
Affiliation(s)
- Takuhiro Kumagai
- Department of Physics, Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; (T.K.); (N.T.); (A.B.)
| | - Naoki To
- Department of Physics, Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; (T.K.); (N.T.); (A.B.)
| | - Armandas Balčytis
- Department of Physics, Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; (T.K.); (N.T.); (A.B.)
- Center for Physical Sciences and Technology, A. Goštauto 9, LT-01108 Vilnius, Lithuania
| | - Gediminas Seniutinas
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia; (G.S.); (S.J.)
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia; (G.S.); (S.J.)
- Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
- Tokyo Tech World Research Hub Initiative (WRHI), Tokyo Institute of Technology, School of Materials and Chemical Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yoshiaki Nishijima
- Department of Physics, Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan; (T.K.); (N.T.); (A.B.)
- Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
- Correspondence:
| |
Collapse
|
9
|
Fujisawa H, Ryu M, Lundgaard S, Linklater DP, Ivanova EP, Nishijima Y, Juodkazis S, Morikawa J. Direct Measurement of Temperature Diffusivity of Nanocellulose-Doped Biodegradable Composite Films. MICROMACHINES 2020; 11:E738. [PMID: 32751390 PMCID: PMC7464088 DOI: 10.3390/mi11080738] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 01/21/2023]
Abstract
The thermal properties of novel nanomaterials play a significant role in determining the performance of the material in technological applications. Herein, direct measurement of the temperature diffusivity of nanocellulose-doped starch-polyurethane nanocomposite films was carried out by the micro-contact method. Polymer films containing up to 2 wt%. of nanocellulose were synthesised by a simple chemical process and are biodegradable. Films of a high optical transmittance T≈80% (for a 200 μm thick film), which were up to 44% crystalline, were characterised. Two different modalities of temperature diffusivity based on (1) a resistance change and (2) micro-thermocouple detected voltage modulation caused by the heat wave, were used for the polymer films with cross sections of ∼100 μm thickness. Twice different in-plane α‖ and out-of-plane α⟂ temperature diffusivities were directly determined with high fidelity: α‖=2.12×10-7 m2/s and α⟂=1.13×10-7 m2/s. This work provides an example of a direct contact measurement of thermal properties of nanocellulose composite biodegradable polymer films. The thermal diffusivity, which is usually high in strongly interconnected networks and crystals, was investigated for the first time in this polymer nanocomposite.
Collapse
Affiliation(s)
- Hiroki Fujisawa
- CREST—JST and School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan;
| | - Meguya Ryu
- CREST—JST and School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan;
- Reserarch Institute for Material and Chemical Measurement, National Metrology Institute of Japan (AIST), Tsukuba Central 3, 1-1-1 Umezono, Tsukuba 305-8563, Japan
| | - Stefan Lundgaard
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;
| | - Denver P. Linklater
- School of Science, RMIT University, Melbourne, VIC 3000, Australia; (D.P.L.); (E.P.I.)
| | - Elena P. Ivanova
- School of Science, RMIT University, Melbourne, VIC 3000, Australia; (D.P.L.); (E.P.I.)
| | - Yoshiaki Nishijima
- Department of Physics, Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan;
- Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;
- Institute of Advanced Sciences, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
- World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Junko Morikawa
- CREST—JST and School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan;
| |
Collapse
|
10
|
To N, Juodkazis S, Nishijima Y. Detailed Experiment-Theory Comparison of Mid-Infrared Metasurface Perfect Absorbers. MICROMACHINES 2020; 11:E409. [PMID: 32295221 PMCID: PMC7231340 DOI: 10.3390/mi11040409] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/08/2020] [Accepted: 04/12/2020] [Indexed: 01/27/2023]
Abstract
Realisation of a perfect absorber A = 1 with transmittance and reflectance T = R = 0 by a thin metasurface is one of the hot topics in recent nanophotonics prompted by energy harvesting and sensor applications ( A + R + T = 1 is the energy conservation). Here we tested the optical properties of over 400 structures of metal-insulator-metal (MIM) metasurfaces for a range of variation in thickness of insulator, diameter of a disc and intra-disc distance both experimentally and numerically. Conditions of a near perfect absorption A > 95 % with simultaneously occurring anti-reflection property ( R < 5 % ) was experimentally determined. Differences between the bulk vs. nano-thin film properties at mid-IR of the used materials can be of interest for plasmonic multi-metal alloys and high entropy metals.
Collapse
Affiliation(s)
- Naoki To
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan;
| | - Saulius Juodkazis
- Optical Sciences Centre and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;
- Institute of Advanced Sciences (IAS), Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
- Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yoshiaki Nishijima
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan;
- Institute of Advanced Sciences (IAS), Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| |
Collapse
|