Metasurface-driven optically variable devices

C Jung, G Kim, M Jeong, J Jang, Z Dong… - Chemical …, 2021‏ - ACS Publications
Optically variable devices (OVDs) are in tremendous demand as optical indicators against
the increasing threat of counterfeiting. Conventional OVDs are exposed to the danger of …

Metasurface-empowered optical cryptography

H Yang, K Ou, H Wan, Y Hu, Z Wei, H Jia, X Cheng… - Materials Today, 2023‏ - Elsevier
Abstract Information security is of great importance in every aspect of life, spawning
numerous modern cryptographic strategies to protect data from stealing and deciphering …

Multicolor and 3D holography generated by inverse‐designed single‐cell metasurfaces

S So, J Kim, T Badloe, C Lee, Y Yang… - Advanced …, 2023‏ - Wiley Online Library
Metasurface‐generated holography has emerged as a promising route for fully reproducing
vivid scenes by manipulating the optical properties of light using ultra‐compact devices …

Pushing the limits of functionality‐multiplexing capability in metasurface design based on statistical machine learning

W Ma, Y Xu, B **ong, L Deng, RW Peng… - Advanced …, 2022‏ - Wiley Online Library
As 2D metamaterials, metasurfaces provide an unprecedented means to manipulate light
with the ability to multiplex different functionalities in a single planar device. Currently, most …

[PDF][PDF] Time-sequential color code division multiplexing holographic display with metasurface

X Li, Q Chen, X Zhang, R Zhao, S **ao, Y Wang… - Opto-Electron …, 2023‏ - researching.cn
Color metasurface holograms are powerful and versatile platforms for modulating the
amplitude, phase, polarization, and other properties of light at multiple operating …

Single-step manufacturing of hierarchical dielectric metalens in the visible

G Yoon, K Kim, D Huh, H Lee, J Rho - Nature communications, 2020‏ - nature.com
Metalenses have shown a number of promising functionalities that are comparable with
conventional refractive lenses. However, current metalenses are still far from …

Stimuli‐responsive dynamic metaholographic displays with designer liquid crystal modulators

I Kim, MA Ansari, MQ Mehmood, WS Kim… - Advanced …, 2020‏ - Wiley Online Library
Flat optics, realized by the artificially created 2D material platform called optical
metasurfaces, is currently undergoing a science‐to‐technology transition. However,“real …

Nanoimprint lithography for high-throughput fabrication of metasurfaces

DK Oh, T Lee, B Ko, T Badloe, JG Ok, J Rho - Frontiers of Optoelectronics, 2021‏ - Springer
Metasurfaces are composed of periodic sub-wavelength nanostructures and exhibit optical
properties that are not found in nature. They have been widely investigated for optical …

Scalable Nanoimprint Lithography Process for Manufacturing Visible Metasurfaces Composed of High Aspect Ratio TiO2 Meta-Atoms

VJ Einck, M Torfeh, A McClung, DE Jung… - ACS …, 2021‏ - ACS Publications
We report a one-step additive manufacturing process to fabricate metalenses for visible
wavelengths. Nanostructures with aspect ratios larger than eight and critical dimensions …

Integrated metasurfaces with microprints and helicity‐multiplexed holograms for real‐time optical encryption

X Luo, Y Hu, X Li, Y Jiang, Y Wang… - Advanced Optical …, 2020‏ - Wiley Online Library
Optical encryption with multichannel, high complexity, and artistry characteristics has
become one of the most significant approaches for modern information security. Recently …