Using highly uniform and smooth selenium colloids as low-loss magnetodielectric building blocks of optical metafluids

Yongdeok Cho, Ji Hyeok Huh, Kyung Jin Park, Kwangjin Kim, Jaewon Lee, Seungwoo Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)


We systematically analyzed the magnetodielectric resonances of Se colloids for the first time in an attempt to utilize them as building blocks for all-dielectric optical metafluids. By taking advantages of the synergistic properties of Se colloids, including their (i) highrefractive- index at optical frequencies, (ii) unprecedented structural uniformity, and (iii) ready availability, we were able to observe Kerker-type directional light scattering, resulting from the efficient coupling between strong electric and magnetic resonances, directly from Se colloidal suspensions. Thus, the use of Se colloids as a generic magnetodielectric building block suggests the opportunity for the production of fluidic low-loss optical antennas which can be processed via spin-coating and painting.

Original languageEnglish
Pages (from-to)13822-13833
Number of pages12
JournalOptics Express
Issue number12
Publication statusPublished - 2017 Jun 12
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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