Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Modelling of Diffusion in Random Packings of Core-Shell Particles
Date
2017-04-01
Author
Hatipoğlu, Emre
Koku, Harun
Metadata
Show full item record
Item Usage Stats
248
views
0
downloads
Cite This
Core-Shell particles are commonly used materials in chromatography. In this study, a mathematical model that mimics diffusion around Core-Shell particles was developed. A random-walk based algorithm was implemented to simulate diffusion and a Core-Shell particle geometry was computationally formed, based on simple geometric constructs and relations. Diffusion simulations were carried out on a randomly packed geometry formed from these particles. The behavior of time-dependent diffusivity data obtained from the model was found to be consistent with prior literature data from nuclear magnetic resonance experiments where transient diffusivity of a self-diffusing substance was measured in porous media.
Subject Keywords
Core-Shell
,
Diffusion
,
Random-Walk
,
Geometry
URI
http://www.hjbc.hacettepe.edu.tr/journal/volume-45/issue-2/modelling-of-diffusion-in-random-packings-of-core-shell-particles/index.html
https://hdl.handle.net/11511/85835
Journal
Hacettepe Journal of Biology and Chemistry
DOI
https://doi.org/10.15671/HJBC.2017.162
Collections
Department of Chemical Engineering, Article
Suggestions
OpenMETU
Core
Modeling of spherulite microstructures in semicrystalline polymers
Oktay, H. Emre; Gürses, Ercan (2015-11-01)
Semicrystalline polymers are composed of crystalline structures together with amorphous polymer chain networks and therefore they exhibit deformation mechanisms of both crystalline materials and amorphous polymers. One of the most common microstructures observed in semicrystalline polymers is the spherulite microstructure in which crystalline lamellae are embedded in a matrix of amorphous material and grow out from a common central nucleus in radial directions. The mechanical behavior of semicrystalline pol...
Structural and optical properties of thermally annealed thallium indium disulfide thin films
Guler, I; Hasanlı, Nızamı (Elsevier BV, 2020-06-30)
Structural and optical properties of thallium indium disulfide (TlInS2) thin films, deposited by thermal evaporation technique and thermally annealed at different temperatures, were analyzed. Crystallite size, dislocation density and lattice strain of the thin films were found from X-ray diffraction experiments. The atomic compositions of the films were determined from energy dispersive spectroscopy analysis. Surface morphology of the films was analyzed using atomic force microscopy. From room temperature t...
Theoretical and experimental investigation of aqueous liquids contained in carbon nanotubes
Yarin, AL; Güvenç Yazıcıoğlu, Almıla; Megaridis, CM; Rossi, MP; Gogotsi, Y (2005-06-01)
The dynamic response-as caused by different means of thermal stimulation or pressurization-of aqueous liquid attoliter volumes contained inside carbon nanotubes is investigated theoretically and experimentally. The experiments indicate an energetically driven mechanism responsible for the dynamic multiphase fluid behavior visualized in real time with high spatial resolution using electron microscopy. The theoretical model is formulated using a continuum approach, which combines temperature-dependent mass di...
Optimization of metalization in crystalline silicon solar cells
Demircioğlu, Olgu; Turan, Raşit; Ünalan, Hüsnü Emrah; Department of Micro and Nanotechnology (2012)
Production steps of crystalline silicon solar cells include several physical and chemical processes like etching, doping, annealing, nitride coating, metallization and firing of the metal contacts. Among these processes, the metallization plays a crucial role in the energy conversion performance of the cell. The quality of the metal layers used on the back and the front surface of the cell and the quality of the electrical contact they form with the underlying substrate have a detrimental effect on the amou...
Facile control of hydroxyapatite particle morphology by utilization of calcium carbonate templates at room temperature
Oral, Çağatay M.; Çalışkan, Arda; Kapusuz, Derya; Ercan, Batur (Elsevier BV, 2020-09-01)
Hydroxyapatite (HAp, Ca-10(PO4)(6)(OH)(2)) particles are widely used in orthopedic applications due to their chemical resemblance to the inorganic component of bone tissue. Since physical and chemical properties of HAp particles influence bone regeneration, various synthesis techniques were developed to precisely control the particle properties. However, most of these techniques required high reaction temperatures, which limited the spectrum of obtained HAp particle morphologies. In this study, ellipsoidal,...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
E. Hatipoğlu and H. Koku, “Modelling of Diffusion in Random Packings of Core-Shell Particles,”
Hacettepe Journal of Biology and Chemistry
, pp. 269–275, 2017, Accessed: 00, 2021. [Online]. Available: http://www.hjbc.hacettepe.edu.tr/journal/volume-45/issue-2/modelling-of-diffusion-in-random-packings-of-core-shell-particles/index.html.