Optically tunable metamaterial perfect absorber on highly flexible substrate

Zhao, Xiaoguang; Fan, Kebin; Zhang, Jingdi; Seren, Hüseyin R.; Metcalfe, Grace D.; Wraback, Michael; Averitt, R. D.; Zhang, Xin

doi:10.1016/j.sna.2015.02.040

Cited by 68 publications

(35 citation statements)

References 16 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ability to tune the carrier concentration and the refractive index of semiconductor material renders them promising perspectives for tunable metasurface and metadevices. Recently there have been numerous reports on tunable metasurfaces using a semiconductor as the tunable material for optical tuning 58,[217][218][219][220][221][222][223][224][225][226][227][228] electrical tuning 107,139 and the combination of both electrical and optical excitation 155,229 .…”

Section: Semiconductorsmentioning

confidence: 99%

Tunable and reconfigurable metasurfaces and metadevices

Nemati

Wang

Hong

et al. 2018

Opto-Electronic Advances

318

205

View full text Add to dashboard Cite

Metasurfaces, two-dimensional equivalents of metamaterials, are engineered surfaces consisting of deep subwavelength features that have full control of the electromagnetic waves. Metasurfaces are not only being applied to the current devices throughout the electromagnetic spectrum from microwave to optics but also inspiring many new thrilling applications such as programmable on-demand optics and photonics in future. In order to overcome the limits imposed by passive metasurfaces, extensive researches have been put on utilizing different materials and mechanisms to design active metasurfaces. In this paper, we review the recent progress in tunable and reconfigurable metasurfaces and metadevices through the different active materials deployed together with the different control mechanisms including electrical, thermal, optical, mechanical, and magnetic, and provide the perspective for their future development for applications.

show abstract

Section: Semiconductorsmentioning

confidence: 99%

Tunable and reconfigurable metasurfaces and metadevices

Nemati

Wang

Hong

et al. 2018

Opto-Electronic Advances

318

205

View full text Add to dashboard Cite

show abstract

“…With the introduction of tunable or switchable elements, metasurfaces can adapt to different environments or take multiple functionalities [12], [16], [41], [42]. Tuning has been demonstrated in several forms, including thermal [43], electrical [10], [44], and optical tuning [45]; or the use pin diodes [46], varactors [47], memristors [48], and microelectromechanical systems (MEMS) [49].…”

Section: Background: Programmable Metasurfacesmentioning

confidence: 99%

Error Analysis of Programmable Metasurfaces for Beam Steering

Taghvaee

Cabellos‐Aparicio

Georgiou

et al. 2020

IEEE J. Emerg. Sel. Topics Circuits Syst.

View full text Add to dashboard Cite

Recent years have seen the emergence of programmable metasurfaces, where the user can modify the EM response of the device via software. Adding reconfigurability to the already powerful EM capabilities of metasurfaces opens the door to novel cyber-physical systems with exciting applications in domains such as holography, cloaking, or wireless communications. This paradigm shift, however, comes with a non-trivial increase of the complexity of the metasurfaces that will pose new reliability challenges stemming from the need to integrate tuning, control, and communication resources to implement the programmability. While metasurfaces will become prone to failures, little is known about their tolerance to errors. To bridge this gap, this paper examines the reliability problem in programmable metamaterials by proposing an error model and a general methodology for error analysis. To derive the error model, the causes and potential impact of faults are identified and discussed qualitatively. The methodology is presented and exemplified for beam steering, which constitutes a relevant case for programmable metasurfaces. Results show that performance degradation depends on the type of error and its spatial distribution and that, in beam steering, error rates over 20% can still be considered acceptable.

show abstract

“…Therefore, in the terahertz range, metamaterial/metasurface absorbers are attractive, and they may achieve perfect absorption. 1,2,[23][24][25] Noble metals and graphene are ne materials to construct metamaterial/metasurface based EM wave absorbers. Metals, such as gold, are good materials to construct metastructures to perfectly absorb EM waves.…”

Section: Introductionmentioning

confidence: 99%