AFM IMAGES OF DISSOLUTION AND GROWTH ON A CALCITE CRYSTAL

被引：154

作者：

HILLNER, PE ^{[1
]}

MANNE, S ^{[1
]}

GRATZ, AJ ^{[1
]}

HANSMA, PK ^{[1
]}

机构：

[1] PENN STATE UNIV,DEPT GEOSCI,UNIV PK,PA 16802

来源：

ULTRAMICROSCOPY | 1992年 / 42卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0304-3991(92)90454-R

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

We present atomic-force-microscope (AFM) images of aqueous dissolution and growth of monolayers on the cleavage plane of calcite. These processes were observed in real time and in situ. Dissolution in 0.015N NaOH occurred primarily by faceting and expansion of pre-existing surface pits and by removal of islands. No new dissolution sites were observed to nucleate during this process. We also observed a simple growth sequence wherein CaCO3 monolayers were deposited on the calcite surface by uniformly advancing steps. Atomic resolution was readily obtained, even at larger-scale features such as steps and etch pits. This shows the potential of the AFM to study deposition and removal of individual molecules on a crystal surface in solution.

引用

页码：1387 / 1393

页数：7

共 15 条

[1] ATOMIC FORCE MICROSCOPE [J].