Quantitative Analysis of Scanning Transmission X-ray Microscopy Images of Gas-Filled PVA-Based Microballoons

被引：17

作者：

Fernandes, Paulo A. L. ^{[1
,2
]}

Tzvetkov, George ^{[3
,4
]}

Fink, Rainer H. ^{[3
]}

Paradossi, Gaio ^{[5
]}

Fery, Andreas ^{[1
]}

机构：

[1] Univ Bayreuth, D-95447 Bayreuth, Germany

[2] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

[3] Univ Erlangen Nurnberg, ICMM, D-91058 Erlangen, Germany

[4] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[5] Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, I-00133 Rome, Italy

来源：

LANGMUIR | 2008年 / 24卷 / 23期

关键词：

D O I：

10.1021/la801898t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the quantitative analysis of scanning transmission X-ray microscopy (STXM) images of gas-filled, poly(vinyl alcohol) (PVA)-based microballoons (NIB) in a water environment. A model for the transmitted intensity is proposed on the basis of a perfect spherical shell stabilizing the microballoon. An extension of this model to take into account the deformation of the MBs is also presented. Taking into consideration a density gradient of the shell and the STXM resolution, we were able to explain very precisely two types of experimental STXM profiles observed on gas-filled MBs. This enables the detailed characterization of NIB properties such as radius and wall thickness and the determination of their wall density with unprecedented high resolution.

引用

页码：13677 / 13682

页数：6

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