Precipitation Pattern Formation in the Copper(II) Oxalate System with Gravity Flow and Axial Symmetry

被引：24

作者：

Baker, A. ^{[1
]}

Toth, A. ^{[2
]}

Horvath, D. ^{[2
]}

Walkush, J. ^{[1
]}

Ali, A. S. ^{[1
]}

Morgan, W. ^{[3
]}

Kukovecz, A. ^{[4
]}

Pantaleone, J. J. ^{[3
]}

Maselko, J. ^{[1
]}

机构：

[1] Univ Alaska Anchorage, Dept Chem, Anchorage, AK USA

[2] Univ Szeged, Dept Phys Chem, Szeged, Hungary

[3] Univ Alaska Anchorage, Dept Phys & Astron, Anchorage, AK USA

[4] Univ Szeged, Dept Appl & Environm Chem, Szeged, Hungary

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 113卷 / 29期

基金：

美国国家科学基金会;

关键词：

SELF-ORGANIZATION; SILICA TUBES; GROWTH; DIFFUSION; GARDENS;

D O I：

10.1021/jp9007703

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Chemical systems that are far from thermodynamic equilibrium may form complex temporal and spatiotemporal structures. In our paper, we present unusual precipitation patterns that have been observed in the system of Cu(II)-oxalate. Starting with a pellet of copper sulfate immersed in or by pumping copper sulfate solution into a horizontal layer of sodium oxalate solution, we have observed the formation of a precipitate ring and an array of radially oriented thin fingers. The development of these patterns is related to the internal structure of the different crystals, the gravity flow, and the circular symmetry of the experimental arrangement.

引用

页码：8243 / 8248

页数：6

共 51 条

[31] TIP SPLITTING WITHOUT INTERFACIAL-TENSION AND DENDRITIC GROWTH-PATTERNS ARISING FROM MOLECULAR ANISOTROPY [J].