{"title":"Ultra-Broadband Perfect Absorption with Stacked Asymmetric Hyperbolic Metamaterial Slabs","authors":"Xiaohu Wu, C. Fu","doi":"10.1080/15567265.2018.1434844","DOIUrl":null,"url":null,"abstract":"ABSTRACT We propose a method to realize ultra-broadband perfect absorption by using multiple slabs of asymmetric hyperbolic metamaterial (AHM) made of doped silicon nanowire arrays. Our numerical results show that the absorptance of the structure is greater than 0.99 in the wavelength range from to for an incident transverse magnetic (TM) plane wave at an angle of incidence equal to . Moreover, the broadband absorptance can still be above 0.9 when the angle of incidence is in the range from to . The underlying mechanism is elucidated as due to the combination of matching of impedance at the interfaces and enhanced absorption in the AHM slabs of the structure. This work may provide in the design of metamaterial absorbers with some inspiring guidelines for obtaining highly enhanced absorption over an ultra-broadband and in a wide range of angle of incidence.","PeriodicalId":49784,"journal":{"name":"Nanoscale and Microscale Thermophysical Engineering","volume":"22 1","pages":"114 - 123"},"PeriodicalIF":2.7000,"publicationDate":"2018-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/15567265.2018.1434844","citationCount":"16","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale and Microscale Thermophysical Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/15567265.2018.1434844","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 16
Abstract
ABSTRACT We propose a method to realize ultra-broadband perfect absorption by using multiple slabs of asymmetric hyperbolic metamaterial (AHM) made of doped silicon nanowire arrays. Our numerical results show that the absorptance of the structure is greater than 0.99 in the wavelength range from to for an incident transverse magnetic (TM) plane wave at an angle of incidence equal to . Moreover, the broadband absorptance can still be above 0.9 when the angle of incidence is in the range from to . The underlying mechanism is elucidated as due to the combination of matching of impedance at the interfaces and enhanced absorption in the AHM slabs of the structure. This work may provide in the design of metamaterial absorbers with some inspiring guidelines for obtaining highly enhanced absorption over an ultra-broadband and in a wide range of angle of incidence.
期刊介绍：
Nanoscale and Microscale Thermophysical Engineering is a journal covering the basic science and engineering of nanoscale and microscale energy and mass transport, conversion, and storage processes. In addition, the journal addresses the uses of these principles for device and system applications in the fields of energy, environment, information, medicine, and transportation.
The journal publishes both original research articles and reviews of historical accounts, latest progresses, and future directions in this rapidly advancing field. Papers deal with such topics as:
transport and interactions of electrons, phonons, photons, and spins in solids,
interfacial energy transport and phase change processes,
microscale and nanoscale fluid and mass transport and chemical reaction,
molecular-level energy transport, storage, conversion, reaction, and phase transition,
near field thermal radiation and plasmonic effects,
ultrafast and high spatial resolution measurements,
multi length and time scale modeling and computations,
processing of nanostructured materials, including composites,
micro and nanoscale manufacturing,
energy conversion and storage devices and systems,
thermal management devices and systems,
microfluidic and nanofluidic devices and systems,
molecular analysis devices and systems.
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