Nucleation and Three-Dimensional Growth: Deviation from Diffusion Control

The Al2O3 nano-films of different thicknesses (1~100nm) were successfully deposited on the monocrystalline Si surface by using ion beam sputtering deposition. The surface topography and the component of nano-films with different thickness were analyzed. The quality of the surface of nano-films was systematically studied. When the films’ thickness increase, the studies by atomic force microscope (AFM), X-ray photoelectron spectrum（XPS） show that the gathering grain continually grows up and transits from acerose cellula by two-dimensional growth to globularity by three-dimensional growth. The elements O, Al and Si were found on the surface of Al2O3 nano-films. With the thickness of the films increasing, the content of Al gradually increases and the intensity peak of Si wears off, the surface quality of the deposited films is ceaselessly improved

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The effect of aliphatic chain length on thermal properties of poly(alkylene dicarboxylate)s

e-Polymers ◽

10.1515/epoly.2007.7.1.658 ◽

2007 ◽

Vol 7 (1) ◽

Cited By ~ 6

Author(s):

Corrado Berti ◽

Annamaria Celli ◽

Paola Marchese ◽

Elisabetta Marianucci ◽

Giancarlo Barbiroli ◽

...

Keyword(s):

Thermal Properties ◽

Three Dimensional ◽

The Other ◽

Aliphatic Chain ◽

Melting Temperatures ◽

Avrami Analysis ◽

Isothermal Analysis ◽

Dimensional Growth ◽

Crystallizing Polymers ◽

Crystalline Forms

AbstractSome poly(alkylene dicarboxylate)s, derived from ethanediol or 1,4- butanediol and different diacids, have been synthesized and analyzed by DSC to determine the correlations existing between the thermal properties and the length of the aliphatic chain. The polymers show crystallization and melting temperatures and enthalpies which increase as the polymethylene segments lengthen, due to the formation of more stable crystals. The samples derived from ethanediol are peculiar; they show reorganization processes during the melting and the melting temperatures are notably higher with respect to those of the other polyesters. This behavior is discussed. Isothermal analysis highlights that poly(alkylene dicarboxylate)s are fast crystallizing polymers. The Avrami analysis suggests a crystallization mechanism characterized by heterogeneous nucleation and three dimensional growth; secondary crystallizations is present only in the samples characterized by short -(CH2)- sequences, due to the reorganization of less perfect crystalline forms. A comparative study between the crystallization rates as a function of the undercooling is reported.

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Three-dimensional growth morphologies in diffusion-controlled channel growth

Physical Review E ◽

10.1103/physreve.55.7789 ◽

1997 ◽

Vol 55 (6) ◽

pp. 7789-7792 ◽

Cited By ~ 40

Author(s):

T. Abel ◽

E. Brener ◽

H. Müller-Krumbhaar

Keyword(s):

Three Dimensional ◽

Diffusion Controlled ◽

Dimensional Growth

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Electrophoretic Deposition of Metal Nanoparticle Monolayers from Nonpolar Solvents for Hydrogen Sensing

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.654.213 ◽

2015 ◽

Vol 654 ◽

pp. 213-217 ◽

Cited By ~ 1

Author(s):

Jan Grym ◽

Roman Yatskiv ◽

Ondřej Černohorský ◽

María Verde ◽

Jan Lorinčík ◽

...

Keyword(s):

Electrophoretic Deposition ◽

Reverse Micelles ◽

Three Dimensional ◽

Fast Response ◽

Metal Nanoparticle ◽

Hydrogen Sensors ◽

Hydrogen Sensing ◽

Nonpolar Solvents ◽

Dimensional Growth ◽

High Degree

We report on the electrophoretic deposition (EPD) of metal nanoparticles (NPs) prepared in reverse micelles on semiconductor substrates with the aim to fabricate sensitive Schottky-based hydrogen sensors with fast response and high degree of selectivity. We discuss the mechanism of NP monolayer formation and show which parameters are essential for the transition from three-dimensional to two-dimensional growth.

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Heteroepitaxial Nucleation and Growth of Ge ON Si(100) Surfaces Using Remote Plasma Enhanced Chemical Vapor Deposition

MRS Proceedings ◽

10.1557/proc-116-519 ◽

1988 ◽

Vol 116 ◽

Cited By ~ 2

Author(s):

R.A. Rudder ◽

S.V. Hattangady ◽

D.J. Vitkavage ◽

R.J. Markunas

Keyword(s):

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Photoelectron Spectroscopy ◽

Three Dimensional ◽

Chemical Vapor ◽

Layer By Layer ◽

Heteroepitaxial Growth ◽

Remote Plasma ◽

Dimensional Growth ◽

Diffraction Patterns

Heteroepitaxial growth of Ge on Si(100) has been accomplished using remote plasma enhanced chemical vapor deposition at 300*#x00B0;C. Reconstructed surfaces with diffraction patterns showing non-uniform intensity variations along the lengths of the integral order streaks are observed during the first 100 Å of deposit. This observation of an atomically rough surface during the initial stages of growth is an indication of three-dimensional growth. As the epitaxial growth proceeds, the diffraction patterns become uniform with extensive streaking on both the integral and fractional order streaks. Subsequent growth, therefore, takes place in a layer-by-layer, two-dimensional mode. X-ray photoelectron spectroscopy of the early nucleation stages, less than 80 Å, show that there is uniform coverage with no evidence of island formation.

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ESTRUCTURA DE LA COMUNIDAD EPIFAUNAL ASOCIADA A COLONIAS DE VIDA LIBRE DEL HIDROCORAL MILLEPORA ALCICORNIS LINNAEUS 1758 EN BAHÍA PORTETE, CARIBE COLOMBIANO

Bulletin of Marine and Coastal Research ◽

10.25268/bimc.invemar.2006.35.0.223 ◽

2016 ◽

Vol 35 ◽

Author(s):

Carolina Castro S. ◽

Mario Monroy L. ◽

Oscar David Solano

Keyword(s):

Coral Species ◽

Three Dimensional ◽

Spatial Separation ◽

Juvenile Stage ◽

Living Tissue ◽

Free Living ◽

Invertebrate Species ◽

Epifaunal Community ◽

Dimensional Growth ◽

Petrolisthes Armatus

The epifaunal community associated with free-living colonies of Millepora alcicornis, the dominant coral species in Portete Bay, was characterized from twenty living colonies randomly collected within a shallow Thalassia testudinum seabed. The three-dimensional growth colonies sheltered 15 families, 15 genera and 18 mobile invertebrate species. The 97% of individuals was represented by decapods crustaceans specially adapted as to live in association with the host. Within them, the porcelanid Petrolisthes armatus, representing 79% of the epifauna (961 individuals), was exclusively found in a juvenile stage suggesting that M. alcicornis is mainly used by this species as a nursery zone. The epifaunal composition is partially related to coral living tissue whereas the principal simbionts size is correlated with the spatial separation of coral branches. In spite of being slightly diverse in comparison with the epifaunal community found in other coral species, the epifauna found in M. alcicornis is of great interest and peculiarity by their association with the free-living form of this coral.

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