Search Results - "Fujii, Garuda"

Cloaking a concentrator in thermal conduction via topology optimization by Fujii, Garuda, Akimoto, Youhei

“…•Topology optimization for thermal cloak-concentrator is proposed based on the level set method and CMA-ES.•Simultaneous realization of cloaking and…”
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Exploring optimal topology of thermal cloaks by CMA-ES by Fujii, Garuda, Akimoto, Youhei, Takahashi, Masayuki

“…This paper presents topology optimization for thermal cloaks expressed by level-set functions and explored using the covariance matrix adaptation evolution…”
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Topology-optimized thermal carpet cloak expressed by an immersed-boundary level-set method via a covariance matrix adaptation evolution strategy by Fujii, Garuda, Akimoto, Youhei

“…•This paper presents CMA-ES-based topology optimization for thermal carpet cloaks.•An immersed boundary-level set method is used to express the structure of…”
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Electromagnetic-acoustic biphysical cloak designed through topology optimization by Fujii, Garuda, Akimoto, Youhei

“…Various strategies have been proposed to achieve invisibility cloaking, but usually only one phenomenon is controlled by each device. Cloaking an object from…”
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Optimizing the structural topology of bifunctional invisible cloak manipulating heat flux and direct current by Fujii, Garuda, Akimoto, Youhei

“…We generate optimal topologies in the structural design of bifunctional cloaks manipulating heat flux and direct current, using topology optimization that…”
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CMA-ES-based structural topology optimization using a level set boundary expression—Application to optical and carpet cloaks by Fujii, Garuda, Takahashi, Masayuki, Akimoto, Youhei

“…In this paper, we propose a topology optimization method based on the covariance matrix adaptation evolution strategy (CMA-ES) as a method for solving…”
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Acoustic cloak designed by topology optimization for acoustic–elastic coupled systems by Fujii, Garuda, Takahashi, Masayuki, Akimoto, Youhei

“…By including acoustic-elastic interactions in a topology optimization based on the covariance matrix adaptation evolution strategy, we developed acoustic…”
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Level set based topology optimization for optical cloaks by Fujii, Garuda, Watanabe, Hayato, Yamada, Takayuki, Ueta, Tsuyoshi, Mizuno, Mamoru

“…This letter presents a level set-based topology optimization method that provides discrete cloaking configurations with superior performance. In some cases,…”
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Topology Optimization for a Dielectric Optical Cloak Based on an Exact Level Set Approach by Yamada, Takayuki, Watanabe, Hayato, Fujii, Garuda, Matsumoto, Toshiro

“…This paper proposes a topology optimization method for a dielectric optical cloak that provides results that are perfectly free from intermediate materials,…”
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Study on transition from photonic-crystal laser to random laser by Fujii, Garuda, Matsumoto, Toshiro, Takahashi, Toru, Ueta, Tsuyoshi

“…The dependence of the lasing threshold on the amount of positional disorder in photonic crystal structures is newly studied by means of the finite element…”
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Topology-optimized source shifter for optical location camouflaging by Fujii, Garuda

“…Through engineering the emission features emanating from a light source, source illusions enable the generation of illusions in which observers viewing at a…”
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Camouflaging the location of a sound source via topology-optimized source-shifter by Fujii, Garuda

“…We demonstrate numerically an inverse design of a structure for camouflaging the location of a sound source as if the sound emanated from a different location…”
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A study on the effect of filling factor for laser action in dielectric random media by Fujii, Garuda, Matsumoto, Toshiro, Takahashi, Toru, Ueta, Tsuyoshi

“…In a random system composed of dielectric materials, laser action is expected to occur from the light localization caused by multiple scattering and…”
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CMA-ES based topology optimization for acoustic cloak by Masayuki TAKAHASHI, Yohei AKIMOTO, Garuda FUJII

“…This paper presents a topology optimization based on a covariance matrix adaptation evolution strategy (CMA-ES) for acoustic cloaks rendering a scattering…”
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Numerical study on the structural color of blue birds by a disordered porous photonic crystal model by Ueta, Tsuyoshi, Fujii, Garuda, Morimoto, Gen, Miyamoto, Kiyoshi, Kosaku, Akinori, Kuriyama, Takeo, Hariyama, Takahiko

“…It has been observationally confirmed that the color of birds, such as kingfisher and red-flanked bluetail, is a structural color owing to the interference of…”
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CMA-ES-based topology optimization accelerated by spectral level-set-boundary modeling by Tanaka, Shin, Fujii, Garuda

“…Topology optimization commonly encounters several challenges, such as ill-posedness, grayscale issues, interdependencies among design variables, multimodality,…”
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Mechanical unfeelability concentrator through topology optimization by Ota, Motoaki, Fujii, Garuda

“…Mechanical cloaks made from elastic metamaterials that make objects unfeelable have been developed, but usually each cloaking device performs only a single…”
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Experimental demonstration of thermal cloaking metastructures designed by topology optimization by Hirasawa, Kazuma, Nakami, Iona, Ooinoue, Takumi, Asaoka, Tatsunori, Fujii, Garuda

“…•Experimental implementations of thermal cloaking metastructures designed by topology optimization is presented.•Topology optimized-thermal metastructures…”
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Level set-based topology optimization for anti-reflection surface by Fujii, Garuda, Ueta, Tsuyoshi, Mizuno, Mamoru

“…We present a level set-based topology optimization method to model anti-reflection surfaces (ARSs). An objective functional is defined as an integration of…”
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Topology-optimized multiple-disk resonators obtained using level set expression incorporating surface effects by Fujii, Garuda, Ueta, Tsuyoshi, Mizuno, Mamoru, Nakamura, Masayuki

“…Topology-optimized designs of multiple-disk resonators are presented using level-set expression that incorporates surface effects. Effects from total internal…”
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