Reversible Image Contrast Manipulation with Thermally Tunable Dielectric Metasurfaces

Kamali, Khosro Zangeneh1; Xu, Lei2; Ward, Jonathan1; Wang, Kai1; Li, Guixin3; Miroshnichenko, Andrey E.2; Neshev, Dragomir1; Rahmani, Mohsen1

2019-04

10.1002/smll.201805142

Small   影响因子和分区

1613-6810

1613-6829

Increasing demand for higher resolution of miniaturized displays requires techniques achieving high contrast tunability of the images. Employing metasurfaces for image contrast manipulation is a new and rapidly growing field of research aiming to address this need. Here, a new technique to achieve image tuning in a reversible fashion is demonstrated by dielectric metasurfaces composed of subwavelength resonators. It is demonstrated that by controlling the temperature of a metasurface the encoded transmission pattern can be tuned. To this end, two sets of nanoresonators composed of nonconcentric silicon disks with a hole that exhibit spectrally sharp Fano resonances and forming a Yin-Yang pattern are designed and fabricated. Through exploitation of the thermo-optical properties of silicon, full control of the contrast of the Yin-Yang image is demonstrated by altering the metasurface temperature by Delta T approximate to 100 degrees C. This is the first demonstrated technique to control an image contrast by temperature. Importantly, the turning technique does not require manipulating the external stimulus, such as polarization or angle of the illumination and/or the refractive index of this environment. These results open many opportunities for transparent displays, optical switches, and tunable illumination systems.

dielectric metasurface fano resonance imaging thermal tuning tunable metasurface

SCI ; EI

英语

其他

Guangdong Provincial Innovation and Entrepreneurship Project[2017ZT07C071]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000467418900002

WILEY-V C H VERLAG GMBH

20191106622287

Imaging techniques ; Refractive index ; Resonance

Light/Optics:741.1 ; Optical Devices and Systems:741.3 ; Imaging Techniques:746 ; Mechanics:931.1

Web of Science

1.Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 2601, Australia
2.Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Kamali, Khosro Zangeneh,Xu, Lei,Ward, Jonathan,et al. Reversible Image Contrast Manipulation with Thermally Tunable Dielectric Metasurfaces[J]. Small,2019,15(15).

Kamali, Khosro Zangeneh.,Xu, Lei.,Ward, Jonathan.,Wang, Kai.,Li, Guixin.,...&Rahmani, Mohsen.(2019).Reversible Image Contrast Manipulation with Thermally Tunable Dielectric Metasurfaces.Small,15(15).

Kamali, Khosro Zangeneh,et al."Reversible Image Contrast Manipulation with Thermally Tunable Dielectric Metasurfaces".Small 15.15(2019).