Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials

Hwang, Chi‐Young; Kim, Gi Heon; Yang, Jong‐Heon; Hwang, Chi‐Sun; Cho, Seong M.; Lee, Won–Jae; Pi, Jae‐Eun; Choi, Ji Hun; Choi, Kyoung Hwan; Kim, Hee‐Ok; Lee, Seung‐Yeol; Kim, Min Su

doi:10.1039/c8nr04471f

Cited by 24 publications

(6 citation statements)

References 40 publications

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“…Reversible holograms have been demonstrated with photorefractive polymers 59 and photorefractive polymers synthetised with nanoparticles 60 . A hologram based on an ultrathin layer of phase change material Ge 2 Sb 2 Te 5 (GST) 61 is also demonstrated. These holograms can be erased and written by the DLW technique owing to the thermally reconfigurability of GST.…”

Section: Indirect Anns Enabled By Nanophotonicsmentioning

confidence: 99%

Artificial neural networks enabled by nanophotonics

et al. 2019

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The growing demands of brain science and artificial intelligence create an urgent need for the development of artificial neural networks (ANNs) that can mimic the structural, functional and biological features of human neural networks. Nanophotonics, which is the study of the behaviour of light and the light–matter interaction at the nanometre scale, has unveiled new phenomena and led to new applications beyond the diffraction limit of light. These emerging nanophotonic devices have enabled scientists to develop paradigm shifts of research into ANNs. In the present review, we summarise the recent progress in nanophotonics for emulating the structural, functional and biological features of ANNs, directly or indirectly.

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Section: Indirect Anns Enabled By Nanophotonicsmentioning

confidence: 99%

Artificial neural networks enabled by nanophotonics

et al. 2019

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“…When the phases exhibit strong electrical or optical contrast, as is the case for many alloys of the Ge-Sb-Te and In-Ag-Sb-Te systems [367], PCMs can be used to realize a variety of low-power, high performance, switchable or adaptive components. Used for decades as the functional material in optical storage media (e.g., CDs and DVDs) [367], chalcogenide PCMs have more recently emerged as a critical material component for digital electronic storage [368,369], analog RF devices [370,371], and neuromorphic systems [372,373], as well as for other nascent electronic and optoelectronic applications [374][375][376].…”

Section: Nanoscale Energy Transport In Next-generation Micro-electronic Systemsmentioning

confidence: 99%

Applications and Impacts of Nanoscale Thermal Transport in Electronics Packaging

Warzoha

Wilson

Donovan

et al. 2021

Journal of Electronic Packaging

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This review introduces relevant nanoscale thermal transport processes that impact thermal abatement in power electronics applications. Specifically, we highlight the importance of nanoscale thermal transport mechanisms at each layer in material hierarchies that make up modern electronic devices. This includes those mechanisms that impact thermal transport through: (1) substrates, (2) interfaces and 2-D materials and (3) heat spreading materials. For each material layer, we provide examples of recent works that (1) demonstrate improvements in thermal performance and/or (2) improve our understanding of the relevance of nanoscale thermal transport across material junctions. We end our discussion by highlighting several additional applications that have benefited from a consideration of nanoscale thermal transport phenomena, including RF electronics and neuromorphic computing.

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“…The refractive index change due to the crystallization of GST shifts the resonance governed by thin-film interference condition in each pixel which can be applied to realize a broadband, full-color diffracting hologram panel. Re- cently, a rewritable full-color computer-generated hologram using PCM-based color-selective diffractive optical components has been demonstrated [164]. The recorded spatial binary pattern in the Ge 2 Sb 2 Te 5 layers combined with thickness-tailored substrates generate colorselective optical diffractions that can be tuned by inducing intermediate states in GST.…”

Section: Wang Et Almentioning

confidence: 99%

Tunable nanophotonics enabled by chalcogenide phase-change materials

Abdollahramezani,

Hemmatyar,

Taghinejad

et al. 2020

Preprint

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Nanophotonics has garnered intensive attention due to its unique capabilities in molding the flow of light in the subwavelength regime. Metasurfaces (MSs) and photonic integrated circuits (PICs) enable the realization of mass-producible, cost-effective, and highly efficient flat optical components for imaging, sensing, and communications. In order to enable nanophotonics with multi-purpose functionalities, chalcogenide phase-change materials (PCMs) have been introduced as a promising platform for tunable and reconfigurable nanophotonic frameworks. Integration of non-volatile chalcogenide PCMs with unique properties such as drastic optical contrasts, fast switching speeds, and long-term stability grants substantial reconfiguration to the more conventional static nanophotonic platforms. In this review, we discuss state-of-the-art developments as well as emerging trends in tunable MSs and PICs using chalcogenide PCMs. We outline the unique material properties, structural transformation, electro-optic, and thermo-optic effects of well-established classes of chalcogenide PCMs. The emerging deep learning-based approaches for the optimization of reconfigurable MSs and the analysis of light-matter interactions are also discussed. The review is concluded by discussing existing challenges in the realization of adjustable nanophotonics and a perspective on the possible developments in this promising area.

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Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials

Cited by 24 publications

References 40 publications

Artificial neural networks enabled by nanophotonics

Artificial neural networks enabled by nanophotonics

Applications and Impacts of Nanoscale Thermal Transport in Electronics Packaging

Tunable nanophotonics enabled by chalcogenide phase-change materials

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