2-D array photonic crystal sensing motif

Jian Tao Zhang, Luling Wang, Jia Luo, Alexander Tikhonov, Nikolay Kornienko, Sanford A. Asher

Research output: Contribution to journalArticlepeer-review

170 Citations (Scopus)


We have developed the first high-diffraction-efficiency two-dimensional (2-D) photonic crystals for molecular recognition and chemical sensing applications. We prepared close-packed 2-D polystyrene particle arrays by self-assembly of spreading particle monolayers on mercury surfaces. The 2-D particle arrays amazingly diffract 80% of the incident light. When a 2-D array was transferred onto a hydrogel thin film showing a hydrogel volume change in response to a specific analyte, the array spacing was altered, shifting the 2-D array diffraction wavelength. These 2-D array photonic crystals exhibit ultrahigh diffraction efficiencies that enable them to be used for visual determination of analyte concentrations.

Original languageEnglish
Pages (from-to)9152-9155
Number of pages4
JournalJournal of the American Chemical Society
Issue number24
Publication statusPublished - Jun 22 2011
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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