Control of precipitation patterns in two-dimensions by pH field

被引：4

作者：

Molnar, Ferenc, Jr. ^{[2
]}

Roszol, Laszlo ^{[3
]}

Volford, Andras ^{[3
]}

Lagzi, Istvan ^{[1
,4
]}

机构：

[1] Eotvos Lorand Univ, Dept Meteorol, H-1518 Budapest, Hungary

[2] Eotvos Lorand Univ, Dept Theoret Phys, H-1518 Budapest, Hungary

[3] Budapest Univ Technol & Econ, Dept Phys, H-1117 Budapest, Hungary

[4] Northwestern Univ, Dept Chem & Biol Engn, Evanston, IL USA

来源：

CHEMICAL PHYSICS LETTERS | 2011年 / 503卷 / 4-6期

关键词：

LIESEGANG PATTERN; PROPAGATING FRONTS; SELF-ORGANIZATION; RING MORPHOLOGY; SYSTEMS; MODEL; 2D; DIFFUSION; GROWTH; WAVES;

D O I：

10.1016/j.cplett.2011.01.022

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：

Systematic deformation of a moving precipitation front into a 2D stationary profile by a pH field generated by acidic and basic reservoirs and its design procedure are discussed. Results indicate that in some pattern formation systems, where the pattern emerges by a precipitation reaction of metal and hydroxide ions, phenomena can be governed by a complex pH field. The pattern formation can be described and discussed by taking into account acid-base chemistry. Our approach, which relies on solving either time-dependent reaction-diffusion equations or derived Laplace's equation, provides a reasonable description of the system. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：231 / 234

页数：4

共 37 条

[1] Front propagation in patterned precipitation. 2. Electric effects in precipitation-dissolution patterning schemes [J].

Al-Ghoul, M ;

Sultan, R .

JOURNAL OF PHYSICAL CHEMISTRY A, 2003, 107 (08) :1095-1101

[2]

[Anonymous], 1995, ALGORITHMIC BEAUTY S

[3] Derivation of the Matalon-Packter law for Liesegang patterns [J].

Antal, T ;

Droz, M ;

Magnin, J ;

Rácz, Z ;

Zrinyi, M .

JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (21) :9479-9486

[4] Ring Morphology and pH Effects in 2D and 1D Co(OH)2 Liesegang Systems [J].

Badr, Layla ;

Sultan, Rabih .

JOURNAL OF PHYSICAL CHEMISTRY A, 2009, 113 (24) :6581-6586

[5] Organic influences on inorganic patterns of diffusion-controlled precipitation in gels [J].

Barge, Laura M. ;

Nealson, Kenneth H. ;

Petruska, John .

CHEMICAL PHYSICS LETTERS, 2010, 493 (4-6) :340-345

[6] Designed patterns:: Flexible control of precipitation through electric currents [J].

Bena, I. ;

Droz, M. ;

Lagzi, I. ;

Martens, K. ;

Racz, Z. ;

Volford, A. .

PHYSICAL REVIEW LETTERS, 2008, 101 (07)

[7] A new model or periodic precipitation incorporating nucleation, growth and ripening [J].

Chacron, M ;

L'Heureux, I .

PHYSICS LETTERS A, 1999, 263 (1-2) :70-77

[8] A MODEL OF PATTERN-FORMATION BY PRECIPITATION [J].

CHERNAVSKII, DS ;

POLEZHAEV, AA ;

MULLER, SC .

PHYSICA D, 1991, 54 (1-2) :160-170

[9]

Costello BPJD, 2008, INT J UNCONV COMPUT, V4, P297

[10] CHEMICAL WAVES AND LIGHT-INDUCED SPATIAL BIFURCATION IN THE HGCL2-KI SYSTEM IN GEL MEDIA [J].

DAS, I ;

PUSHKARNA, A ;

AGRAWAL, NR .

JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (20) :7269-7275

← 1 2 3 4 →