Review of Metasurfaces and Metadevices: Advantages of Different Materials and Fabrications

Wei Lun Hsu, Yen Chun Chen, Shang Ping Yeh, Qiu Chun Zeng, Yao Wei Huang, Chih Ming Wang

Research output: Contribution to journalReview articlepeer-review

4 Scopus citations

Abstract

Flat optics, metasurfaces, metalenses, and related materials promise novel on-demand light modulation within ultrathin layers at wavelength scale, enabling a plethora of next-generation optical devices, also known as metadevices. Metadevices designed with different materials have been proposed and demonstrated for different applications, and the mass production of metadevices is necessary for metadevices to enter the consumer electronics market. However, metadevice manufacturing processes are mainly based on electron beam lithography, which exhibits low productivity and high costs for mass production. Therefore, processes compatible with standard complementary metal–oxide–semiconductor manufacturing techniques that feature high productivity, such as i-line stepper and nanoimprint lithography, have received considerable attention. This paper provides a review of current metasurfaces and metadevices with a focus on materials and manufacturing processes. We also provide an analysis of the relationship between the aspect ratio and efficiency of different materials.

Original languageEnglish
Article number1973
JournalNanomaterials
Volume12
Issue number12
DOIs
StatePublished - 1 Jun 2022

Keywords

  • aspect ratio
  • efficiency
  • metadevices
  • metalens
  • metasurfaces

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