Self-assembled Photonic Crystals for Colorful Radiative Coolers

Hyeon Ho Kim, Eunji Im, Seungwoo Lee

Research output: Contribution to journalConference articlepeer-review


We experimentally demonstrate a technique to estimate resonance wavelength of a photonic crystal cavity by spatially filtering a laser beam incident at different angles and imaging the transmitted beam profile. The transmitted beam exhibits two features: an annular beam and a central spot. Under the resonance condition, the two features overlap spatially. We develop calibration curves for the spectral characterization using transfer matrix method. The estimates from our cost-efficient technique match well with measurements obtained using a spectrophotometer.

Original languageEnglish
Pages (from-to)1007-1008
Number of pages2
JournalInternational Conference on Metamaterials, Photonic Crystals and Plasmonics
Publication statusPublished - 2021
Event11th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2021 - Warsaw, Poland
Duration: 2021 Jul 202021 Jul 23

Bibliographical note

Publisher Copyright:
© 2021 META Conference. All rights reserved.

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science (miscellaneous)
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry


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