In situ measurement of the second harmonic signal of adsorbing nonlinear optical ionically self-assembled monolayers

C. Brands, P. J. Neyman, M. T. Guzy, S. Shah, K. E. Van Cott, R. M. Davis, H. Wang, H. W. Gibson, J. R. Heflin

Research output: Contribution to journalConference articlepeer-review

Abstract

Ionically self-assembled monolayers (ISAMs) have recently been shown to spontaneously exhibit a polar ordering that gives rise to substantial second order nonlinear optical response. The deposition of ISAMs has been studied in situ via second harmonic generation. This is a particularly sensitive probe of the growth of nanometer-thick films since the centrosymmetry of the immersion solutions, the substrate, and the container yields no SHG contribution from these bulk components. Upon immersion in the NLO-active polyelectrolyte solution, the SHG rises sharply over the first minute. When a film is immersed into salt water, the SHG decreases significantly only to be restored when the salt solution is replaced with deionized water.

Original languageEnglish (US)
Pages (from-to)313-318
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume707
StatePublished - 2002
EventSelf-Assembly Processes in Materials - Boston,MA, United States
Duration: Nov 26 2001Nov 30 2001

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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