用于测定超薄聚合物薄膜粘弹性特性的新型纳米气泡充气方法。

Novel nanobubble inflation method for determining the viscoelastic properties of ultrathin polymer films.

作者信息

O'Connell P A, McKenna G B

机构信息

Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, USA.

出版信息

Rev Sci Instrum. 2007 Jan;78(1):013901. doi: 10.1063/1.2409777.

DOI:10.1063/1.2409777

PMID:17503927

Abstract

We describe a novel experimental technique for measuring the viscoelastic properties of ultrathin polymer films. The method is based on the classic bubble inflation technique for measuring the biaxial creep compliance of films, reduced in size to measure films with thicknesses down to at least 13 nm. The method uses the imaging capabilities of the atomic force microscope to determine the time evolution of the geometry of nanobubbles. Using these data, along with the applied pressure, the absolute creep compliance of the films can be determined.

摘要

我们描述了一种用于测量超薄聚合物薄膜粘弹性特性的新型实验技术。该方法基于用于测量薄膜双轴蠕变柔量的经典气泡膨胀技术，其尺寸减小以测量厚度至少为13nm的薄膜。该方法利用原子力显微镜的成像能力来确定纳米气泡几何形状的时间演变。利用这些数据，结合施加的压力，可以确定薄膜的绝对蠕变柔量。