In-situ imaging of nanoscale ethanol film formation on mica surface under saturated vapor condition using VSPFM technique

ZHANG Donghua1; 2 HU Jun1 1

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In-situ imaging of nanoscale ethanol film formation on mica surface under saturated vapor condition using VSPFM technique

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- In-situ imaging of nanoscale ethanol film formation on mica surface under saturated vapor condition using VSPFM technique
- NUCLEAR TECHNIQUES Vol. 34, Issue 4, (2011)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所
  2. 中国科学院研究生院
- 作者简介：
- 基金信息：
- DOI：
  CLC： O485
- Published：01 April 2011
- 稿件说明：
移动端阅览
[1]张东华,胡钧.振动扫描极化力显微技术原位研究乙醇在云母表面的吸附行为[J].核技术,2011,34(04):317-320.

ZHANG Donghua1, 2 HU Jun1 1. In-situ imaging of nanoscale ethanol film formation on mica surface under saturated vapor condition using VSPFM technique[J]. Nuclear techniques, 2011, 34(4): 317-320.
[1]张东华,胡钧.振动扫描极化力显微技术原位研究乙醇在云母表面的吸附行为[J].核技术,2011,34(04):317-320. DOI：

ZHANG Donghua1, 2 HU Jun1 1. In-situ imaging of nanoscale ethanol film formation on mica surface under saturated vapor condition using VSPFM technique[J]. Nuclear techniques, 2011, 34(4): 317-320. DOI：

摘要

用AFM成像技术的振动扫描极化力成像模式（VSPFM）

在挥发性有机小分子乙醇的饱和气体氛围条件下

研究了云母表面吸附层对乙醇的吸附行为。通过对扫描探针针尖施加不同的偏压和梯度比较成像质量

探索挥发性两亲分子饱和气体氛围中亲水固体表面吸附层吸附行为的最优成像条件

对比实验发现当扫描探针的针尖施加偏压为AC 4-6 V时

成像质量较好

多次重复试验证实当AC 5 V时成像质量最佳。这为原位实时研究气-固界面及气体-固体相互作用提供了现实方法和技术。实验结果表明乙醇在云母表面的吸附行为不能用Langmuir的吸附模型来解释。

Abstract

In this paper

vibrating scanning polarization force microscopy(VSPFM) technique is used to study the adsorption of ethanol gas molecules on mica surface at room temperature

and the relationship between bias and imaging quality.Experiment results showed that the best images can be acquired when the tip is biased at AC 5 V.VSPFM is a useful technique to investigate air-solid interaction.Using this technique

we found that ethanol gas molecule did not adsorb quickly on mica surface

and the ethanol adsorption behavior could not be illustrated by Langmuir adsorption model

as it took hours for the ethanol vapor molecules to be adsorbed on mica to form a nanoscale film from nucleated dots or islands.

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