Plasmonic circular dichroism using Au fine particles and riboflavin

Yuuka Kosaka, Kazutaka Egami, Satoshi Tomita, Hisao Yanagi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We report circular dichroism (CD) induced in the visible region using a composite film containing Au fine parti-cles and riboflavin. It is revealed that binding of chiral molecules to the surface of Au fine particles is not necessary for the plasmon-induced CD. Moreover, we find that composite films containing dye and glucose instead of Au fine particles and riboflavin induces a CD signal at the wavelength, where the dye shows an absorption peak. The polarity of the CD signal is reversed by using the enantiomer of glucose. Mechanism of the absorption-induced CD in the visible region is discussed.

Original languageEnglish
Pages (from-to)2529-2532
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Issue number12
Publication statusPublished - 2012 Dec


  • Chirality
  • Circular dichroism
  • Metamaterials
  • Surface plasmon


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