Opto-Electronic Science
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2022, 1(10) Column

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Opto-Electronic Science 第1卷 第10期

Rao Fu 1†Kuixian Chen 1†Zile Li 1,2†Shaohua Yu 2,*Guoxing Zheng 1,2,3,4,**
Author Affiliations
Abstract
1 School of Electronic Information and School of Microelectronics, Wuhan University, Wuhan 430072, China
2 Peng Cheng Laboratory, Shenzhen 518055, China
3 Wuhan Institute of Quantum Technology, Wuhan 430206, China
4 Hubei Luojia Laboratory, Wuhan 430079, China
Metasurface-based nanoprinting (meta-nanoprinting) has fully demonstrated its advantages in ultrahigh-density grayscale/color image recording and display. A typical meta-nanoprinting device usually has image resolutions reaching 80 k dots per inch (dpi), far exceeding conventional technology such as gravure printing (typ. 5 k dpi). Besides, by fully exploiting the design degrees of freedom of nanostructured metasurfaces, meta-nanoprinting has been developed from previous single-channel to multiple-channels, to current multifunctional integration or even dynamic display. In this review, we overview the development of meta-nanoprinting, including the physics of nanoprinting to manipulate optical amplitude and spectrum, single-functional meta-nanoprinting, multichannel meta-nanoprinting, dynamic meta-nanoprinting and multifunctional metasurface integrating nanoprinting with holography or metalens, etc. Applications of meta-nanoprinting such as image display, vortex beam generation, information decoding and hiding, information encryption, high-density optical storage and optical anti-counterfeiting have also been discussed. Finally, we conclude the opportunities and challenges/perspectives in this rapidly developing research field of meta-nanoprinting.
metasurface nanoprinting structural-color hologram multifunctional device 
Opto-Electronic Science
2022, 1(10): 220011
Author Affiliations
Abstract
1 Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
2 Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA
3 Light Source Research Division, Korea Photonics Technology Institute (KOPTI), Gwangju 61007, Republic of Korea
4 School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
5 Department of Advanced Convergence Technology, Research Institute of Advanced Convergence Technology, Korea Polytechnic University, 237 Sangidaehak-ro, Siheung-si 15073, Republic of Korea
6 King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
Epitaxially grown III-nitride alloys are tightly bonded materials with mixed covalent-ionic bonds. This tight bonding presents tremendous challenges in developing III-nitride membranes, even though semiconductor membranes can provide numerous advantages by removing thick, inflexible, and costly substrates. Herein, cavities with various sizes were introduced by overgrowing target layers, such as undoped GaN and green LEDs, on nanoporous templates prepared by electrochemical etching of n-type GaN. The large primary interfacial toughness was effectively reduced according to the design of the cavity density, and the overgrown target layers were then conveniently exfoliated by engineering tensile-stressed Ni layers. The resulting III-nitride membranes maintained high crystal quality even after exfoliation due to the use of GaN-based nanoporous templates with the same lattice constant. The microcavity-assisted crack propagation process developed for the current III-nitride membranes forms a universal process for developing various kinds of large-scale and high-quality semiconductor membranes.
III-nitride alloys membranes nanoporous Ni stressor light-emitting diodes ultraviolet photodetectors 
Opto-Electronic Science
2022, 1(10): 220016