Picosecond acoustic measurements of longitudinal wave velocity of submicron polymer films

Yung Chun Lee; Kathleen C. Bretz; Frank W. Wise; Wolfgang Sachse

doi:10.1063/1.117030

Picosecond acoustic measurements of longitudinal wave velocity of submicron polymer films

Yung Chun Lee, Kathleen C. Bretz, Frank W. Wise, Wolfgang Sachse

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

We apply picosecond acoustic techniques to determine the longitudinal wave speed of submicron polymer films in the through-thickness dimension. The time-of-flight of an elastic wave propagating through the polymer film is measured using an optical pump/probe technique. The longitudinal wave speed in poly(methyl methacrylate) films of thickness ranging from 20 to 130 nm has been determined. A pronounced increase in longitudinal wave speed is observed for films of thickness less than 40 nm.

Original language	English
Pages (from-to)	1692-1694
Number of pages	3
Journal	Applied Physics Letters
Volume	69
Issue number	12
DOIs	https://doi.org/10.1063/1.117030
Publication status	Published - 1996 Sept 16

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.117030

Cite this

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abstract = "We apply picosecond acoustic techniques to determine the longitudinal wave speed of submicron polymer films in the through-thickness dimension. The time-of-flight of an elastic wave propagating through the polymer film is measured using an optical pump/probe technique. The longitudinal wave speed in poly(methyl methacrylate) films of thickness ranging from 20 to 130 nm has been determined. A pronounced increase in longitudinal wave speed is observed for films of thickness less than 40 nm.",

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Y1 - 1996/9/16

N2 - We apply picosecond acoustic techniques to determine the longitudinal wave speed of submicron polymer films in the through-thickness dimension. The time-of-flight of an elastic wave propagating through the polymer film is measured using an optical pump/probe technique. The longitudinal wave speed in poly(methyl methacrylate) films of thickness ranging from 20 to 130 nm has been determined. A pronounced increase in longitudinal wave speed is observed for films of thickness less than 40 nm.

AB - We apply picosecond acoustic techniques to determine the longitudinal wave speed of submicron polymer films in the through-thickness dimension. The time-of-flight of an elastic wave propagating through the polymer film is measured using an optical pump/probe technique. The longitudinal wave speed in poly(methyl methacrylate) films of thickness ranging from 20 to 130 nm has been determined. A pronounced increase in longitudinal wave speed is observed for films of thickness less than 40 nm.

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Picosecond acoustic measurements of longitudinal wave velocity of submicron polymer films

Abstract

All Science Journal Classification (ASJC) codes

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