Surface Nanostructure of Layers from Water Solutions after Sedimentation
| Authors | L.A. Bulavin, Yu.F. Zabashta, L.Yu. Vergun, O.S. Svechnikova, S.R. Bobrovnik |
| Affiliations |
T. Shevchenko National University of Kyiv, Faculty of Physics, 64/13, Volodymyrska St., 01601 Kyiv, Ukraine |
| Е-mail | |
| Issue | Volume 11, Year 2019, Number 4 |
| Dates | Received 12 April 2019; revised manuscript received 06 August 2019; published online 22 August 2019 |
| Citation | L.A. Bulavin, Yu.F. Zabashta, L.Yu. Vergun, et al., J. Nano- Electron. Phys. 11 No 4, 04012 (2019) |
| DOI | https://doi.org/10.21272/jnep.11(4).04012 |
| PACS Number(s) | 81.15.Lm |
| Keywords | Epitaxial growth of crystals, Atomic force microscopy (9) , Hydrogen bonds. |
| Annotation |
The question of mechanisms of sedimentation on a substrate of a substance from water solutions is considered. The surface structure of layers obtained by sedimentation of water solutions of two types is investigated. For the first type (an aqueous solution of glucose with a concentration of 40 %), the formation of hydrogen bonds of the dissolved substance with water molecules is characteristic. In the formation of the second type of crystals (aqueous NaCl solution with a concentration of 0.9 %), such bonds are not formed. An analysis of the images obtained using the Integra atomic force microscope revealed the difference between the surface structure of the layers obtained for these types of solutions. Using the histogram of the distribution of surface relief, a method for processing experimental data is proposed. According to this method, the surface is described using a traditional continuum model. When applying this model, the vertical displacement of the points of the surface from the plane is described by a random field. In addition, it is assumed that the projections on the surface are of the same shape and are arranged at the same distance from each other. For the averaged model, the density function is a deterministic periodic function. It is established that for the first type of aqueous solution, the smoothed histogram contains maxima, and for the second type – the absence of minima is observed in the smoothed histogram.It is taken into account that in the aqueous solution of the first type there are clusters containing both the particles of the dissolved substance and the molecules, and in the solution of the second type in the direction of the substrate, not the clusters but separate particles of the dissolved substance (ions) diffuse. It is shown that in the solution of the first type, the clusters diffuse to the substrate and deposit on it, forming an epitaxial layer consisting of areas with a horizontal surface separated by projections with substantially vertical walls and a depth of about the thickness of the layer. At the same time, the process of subsidence is realized, which is accompanied by the greatest decrease in the energy of the system. This process is achieved in the case when the largest contact area between the cluster and the substrate is ensured, if possible. In the second case, the layer is formed as a result of settling on the substrate of particles of the dissolved substance, which creates conditions for smoothing out the protrusions inherent in the substrate and smoothly changing the angle of inclination of the surface of the layer. |
|
List of References |
Other articles from this number
1) X-ray Spectral Investigation of SiO2/TiO2/C Nanocomposites [04001-1-04001-4]2) The Structural Studies of Phase Transitions in the Graphite Intercalation Compounds with Iodine Chloride and Bromine [04002-1-04002-6]
3) Influence of Substrate Temperature on the Formation of Titanium Carbide Film [04003-1-04003-5]
4) Theoretical Analysis of Thermal Conductivity of Polymer Systems Filled with Carbon Nanotubes [04004-1-04004-6]
5) Electrical Characteristics of Au/n-GaN Schottky Junction with a High-k SrTiO3 Insulating Layer [04005-1-04005-5]
6) Nanoporous Structure of the Ammonium Nitrate Granules at the Final Drying: The Effect of the Dryer Operation Mode [04006-1-04006-4]
7) Magnetoresistance of GaP0.4As0.6 Whiskers in Vicinity of MIT [04007-1-04007-5]
8) Simulation of Guard Ring Type Effects on the Electrical Characteristics of n-on-p Planar Silicon Detectors [04008-1-04008-6]
9) Watershed Segmentation Image Processing Analysis of Zn0.97Fe0.03O Dilute Magnetic Semiconductor [04009-1-04009-3]
10) Microstructural Features and Tribological Behaviour of Low-Alloyed Steel Modified by High-Energy Plasma Pulse [04010-1-04010-5]
11) Design and Analysis of Ternary D-Latch Using CNTFETs [04011-1-04011-5]
12) Solutions of Two-dimensional Schrodinger Equation in Symmetries of Extended Quantum Mechanics for the Modified Pseudoharmonic Potential: an Application to Some Diatomic Molecules [04013-1-04013-7]
13) Investigation of Localized Charges on Linearity and Distortion Performance of Ferroelectric Dual Material Gate All Around TFETs [04014-1-04014-6]
14) Band Gap Engineering in Spray Pyrolysis Grown Nanocrystalline NiO Thin Films by Fe Doping [04015-1-04015-6]
15) Single-walled Boron Nitride Pores as Media for Hydrogen Storage: DFT and IGM Study [04016-1-04016-7]
16) Synthesis and Characterization of Hybrid Chitosan/magnetite Nanocomposite Fluid [04017-1-04017-5]
17) New Multi-stages – Hydrogen Diffusion Model for Negative Bias Temperature Instability [04018-1-04018-6]
18) Nanostructured Coatings Based on Amorphous Carbon and Gold Nanoparticles Obtained by the Pulsed Vacuum-arc Method [04019-1-04019-7]
19) X-ray Analysis of NiCrxFe2 – xO4 Nanoparticles Using Debye- Scherrer, Williamson-Hall and Size-strain Plot Methods [04020-1-04020-8]
20) BSIM3v3 Characterization and Simulation of MOS Si1 – xGex Transistors with 130 nm Submicron Technology [04021-1-04021-6]
21) An Analogue Multiplier Using Carbon Nanotube Field-effect Transistor Technology [04022-1-04022-5]
22) Computer Simulation of the Electrotransport Characteristics of the “Au – Bipyridine – Au” Nanocontact [04023-1-04023-5]
23) Nonrelativistic Bound State Solutions of the Modified 2D-Killingbeck Potential Involving 2D-Killingbeck Potential and Some Central Terms for Hydrogenic Atoms and Quarkonium System [04024-1-04024-8]
24) Effect of the Temperature Change of Material Test Reactor on Calibration of Cluster Dynamics for Neutron Irradiation Pure Iron [04025-1-04025-4]
25) Elastic Properties of Au, Ag, and Core-shell Au@Ag Nanorods from Molecular Dynamics Simulations [04026-1-04026-5]
26) Nanopowder and Thin Films of ZnO by Sol Gel Approach [04027-1-04027-5]
27) The Effects of Al-doped ZnO (AZO) as Anti-reflection Agent for Dye Sensitized Solar Cells System [04028-1-04028-5]
28) Operating Temperature Effect on the Thin Film Solar Cell Efficiency [04029-1-04029-5]
29) Extraction of Diode’s Electrical Parameters under Forward and Room Temperature Conditions in an InAsSb Based Device [04030-1-04030-6]
30) Research of Photoluminescence Spectra of ZnSXSe1 – X:Mn Nanocrystals Obtained by Method of Self-propagating High-temperature Synthesis [04031-1-04031-5]
31) Nonlinearity of Diffusion Resistors at High-density Current [04032-1-0432-5]
32) Research of Heat Transfer Mechanisms in Glasses Using Modulation Polarimetry Technique [04033-1-04033-4]
33) Ab Initio Modeling of Boron Impurities Influence on the Electronic and Atomic Structure of Titanium Carbide [04034-1-04034-4]
34) Ferromagnetism of Iron-copper Nanocomposites [04035-1-04035-5]
35) Quantum Confinement Features in EPR and UV-vis Spectra of Al/Au Nanosystems [04036-1-04036-4]
36) Searching for Order Parameter of Low-temperature Phase Transitions in Divalent Nitrates [04037-1-04037-3]
