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 article

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)201-206
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume710
StatePublished - Dec 1 2002
EventPolymer Interfaces and Thin Films - Boston, MA, United States
Duration: Nov 26 2001Nov 30 2001

Fingerprint

Self assembled monolayers
in situ measurement
harmonics
submerging
salts
Deionized water
Saline water
Harmonic generation
Polyelectrolytes
containers
Thick films
water
thick films
Containers
harmonic generations
Salts
probes
Substrates

ASJC Scopus subject areas

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

Cite this

In situ measurement of the second harmonic signal of adsorbing nonlinear optical ionically self-assembled monolayers. / Brands, C.; Neyman, P. J.; Guzy, M. T.; Shah, S.; Van Cott, K. E.; Davis, R. M.; Wang, H.; Gibson, H. W.; Heflin, J. R.

In: Materials Research Society Symposium - Proceedings, Vol. 710, 01.12.2002, p. 201-206.

Research output: Contribution to journalConference article

Brands, C, Neyman, PJ, Guzy, MT, Shah, S, Van Cott, KE, Davis, RM, Wang, H, Gibson, HW & Heflin, JR 2002, 'In situ measurement of the second harmonic signal of adsorbing nonlinear optical ionically self-assembled monolayers', Materials Research Society Symposium - Proceedings, vol. 710, pp. 201-206.
Brands, C. ; Neyman, P. J. ; Guzy, M. T. ; Shah, S. ; Van Cott, K. E. ; Davis, R. M. ; Wang, H. ; Gibson, H. W. ; Heflin, J. R. / In situ measurement of the second harmonic signal of adsorbing nonlinear optical ionically self-assembled monolayers. In: Materials Research Society Symposium - Proceedings. 2002 ; Vol. 710. pp. 201-206.
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AU - Neyman, P. J.

AU - Guzy, M. T.

AU - Shah, S.

AU - Van Cott, K. E.

AU - Davis, R. M.

AU - Wang, H.

AU - Gibson, H. W.

AU - Heflin, J. R.

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AB - 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.

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