scholarly journals Diffusion-Limited Aggregation in Potato Starch and Hydrogen Borate Electrolyte System

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Tuhina Tiwari ◽  
Manindra Kumar ◽  
Kamlesh Pandey ◽  
Neelam Srivastava ◽  
P. C. Srivastava
Keyword(s):  
Boric Acid ◽  
Potato Starch ◽  
Broad Peak ◽  
Vibration Band ◽  
Electrolyte System ◽  
Diffusion Limited Aggregation ◽  
Xrd Pattern ◽  
Diffusion Limited ◽  
Amorphous Nature ◽  
External Stimuli

Natural growth of diffusion-limited aggregate (DLA), without any external stimuli, in boric acid doped starch system is reported here. Fractals grown were confirmed to be of diffusion-limited aggregate (DLA) pattern having fractal dimension ~1.49. Effect of substrate and humidity on growth pattern has also been discussed. The existence of a different vibration band of H3BO3in FTIR confirmed that growth structures are related to boric acid. XRD pattern has shown broad peak along with some sharp peaks. Broad peak is related to starch’s amorphous nature, as where intense sharp peaks are due to boric acid.

Anisotropy and Cluster Growth by Diffusion-Limited Aggregation

1985 ◽  
Vol 55 (13) ◽  
pp. 1406-1409 ◽  
Author(s):  
Robin C. Ball ◽  
Robert M. Brady ◽  
Giuseppe Rossi ◽  
Bernard R. Thompson
Keyword(s):  
Cluster Growth ◽  
Diffusion Limited Aggregation ◽  
Diffusion Limited

Deterministic Growth of Diffusion-Limited Aggregation with Quenched Disorder

1990 ◽  
Vol 13 (4) ◽  
pp. 341-347 ◽  
Author(s):  
A Hansen ◽  
E. L Hinrichsen ◽  
S Roux ◽  
H. J Herrmann ◽  
L. de Arcangelis
Keyword(s):  
Quenched Disorder ◽  
Diffusion Limited Aggregation ◽  
Diffusion Limited

Multifractal spectrum of off-lattice three-dimensional diffusion-limited aggregation

1992 ◽  
Vol 46 (6) ◽  
pp. R3016-R3019 ◽  
Author(s):  
Stefan Schwarzer ◽  
Marek Wolf ◽  
Shlomo Havlin ◽  
Paul Meakin ◽  
H. Eugene Stanley
Keyword(s):  
Three Dimensional ◽  
Multifractal Spectrum ◽  
Diffusion Limited Aggregation ◽  
Diffusion Limited ◽  
Dimensional Diffusion

Thermodynamic and scaling behaviour in finite diffusion-limited aggregation

1992 ◽  
Vol 77 (5) ◽  
pp. 857-867 ◽  
Author(s):  
M. Arturo López-Quintela ◽  
M. Carmen Buján-Núñez
Keyword(s):  
Diffusion Limited Aggregation ◽  
Scaling Behaviour ◽  
Diffusion Limited

Diffusion-limited aggregation as a deterministic growth process

1985 ◽  
Vol 32 (5) ◽  
pp. 3160-3163 ◽  
Author(s):  
L. M. Sander ◽  
P. Ramanlal ◽  
E. Ben-Jacob
Keyword(s):  
Growth Process ◽  
Diffusion Limited Aggregation ◽  
Diffusion Limited

scholarly journals Fractal and Dendritic Growth of Surface Aggregates

1995 ◽  
Vol 407 ◽  
Author(s):  
H. Brune ◽  
K. Bromann ◽  
K. Kern ◽  
J. Jacobsen ◽  
P. Stoltze ◽  
...  
Keyword(s):  
Dendritic Growth ◽  
Kinetic Monte Carlo ◽  
Variable Temperature ◽  
Two Dimensions ◽  
Present System ◽  
Diffusion Limited Aggregation ◽  
Microscopic Mechanism ◽  
Diffusion Limited ◽  
Kinetic Monte Carlo Simulations ◽  
Equilibrium Growth

ABSTRACTThe similarity of patterns formed in non-equilibrium growth processes in physics, chemistry and biology is conspicuous and many attempts have been made to discover common mechanisms underlying their growth. The central question in this context is what causes some patterns to be dendritic, as e.g. snowflakes, while others grow fractal (randomly ramified). Here we report a crossover from fractal to dendritic patterns for growth in two dimensions: the diffusion limited aggregation of Ag atoms on a Pt(111) surface as observed by means of variable temperature STM. The microscopic mechanism of dendritic growth can be analyzed for the present system. It originates from the anisotropy of the diffusion of adatoms at corner sites which is linked to the trigonal symmetry of the substrate. This corner diffusion is observed to be active as soon as islands form, therefore, the classical DLA clusters with the hit and stick mechanism do not form. The ideas on the mechanism for dendritic growth have been verified by kinetic Monte-Carlo simulations which are in excellent agreement with experiment.

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