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Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces

A novel model is developed to evaluate the van der Waals (vdW) interactions between a capsule shaped bacterium (P. putida) and flat minerals plates in different approach profiles: Vertically and horizontally. A comparison of the approaches to the well-developed spherical particle to mineral surface...

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Main Authors: Mohamed Zuki, Fathiah, Edyvean, Robert G.J., Pourzolfaghar, Hamed, Kasim, Norherdawati
Format: Article
Language:English
Published: MDPI 2021
Subjects:
TP Chemical technology
Online Access:http://eprints.um.edu.my/25876/1/25876.pdf
http://eprints.um.edu.my/25876/
https://doi.org/10.3390/biomimetics6010005
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spelling my.um.eprints.258762021-04-21T02:14:59Z http://eprints.um.edu.my/25876/ Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces Mohamed Zuki, Fathiah Edyvean, Robert G.J. Pourzolfaghar, Hamed Kasim, Norherdawati TP Chemical technology A novel model is developed to evaluate the van der Waals (vdW) interactions between a capsule shaped bacterium (P. putida) and flat minerals plates in different approach profiles: Vertically and horizontally. A comparison of the approaches to the well-developed spherical particle to mineral surface (semi-infinite wall and spherical) approach has been made in this investigation. The van der Waals (vdW) interaction potentials for a capsule-shaped bacterium are found using Hamaker’s microscopic approach of sphere to plate and cylinder to plate either vertically or horizontally to the flat surface. The numerical results show that a horizontal orientated capsule shaped bacterium to mineral surface interaction was more attractive compared to a capsule shaped bacterium approaching vertically. The orientation of the bacterial approaching a surface as well as the type and topology of the mineral influence the adhesion of a bacteria to that surface. Furthermore, the density difference among each type of bacteria shape (capsule, cylinder, and sphere) require different amounts of energy to adhere to hematite and quartz surfaces. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. MDPI 2021 Article PeerReviewed text en cc_by_4 http://eprints.um.edu.my/25876/1/25876.pdf Mohamed Zuki, Fathiah and Edyvean, Robert G.J. and Pourzolfaghar, Hamed and Kasim, Norherdawati (2021) Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces. Biomimetics, 6 (1). p. 5. ISSN 2313-7673 https://doi.org/10.3390/biomimetics6010005 doi:10.3390/biomimetics6010005
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Mohamed Zuki, Fathiah
Edyvean, Robert G.J.
Pourzolfaghar, Hamed
Kasim, Norherdawati
Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
description A novel model is developed to evaluate the van der Waals (vdW) interactions between a capsule shaped bacterium (P. putida) and flat minerals plates in different approach profiles: Vertically and horizontally. A comparison of the approaches to the well-developed spherical particle to mineral surface (semi-infinite wall and spherical) approach has been made in this investigation. The van der Waals (vdW) interaction potentials for a capsule-shaped bacterium are found using Hamaker’s microscopic approach of sphere to plate and cylinder to plate either vertically or horizontally to the flat surface. The numerical results show that a horizontal orientated capsule shaped bacterium to mineral surface interaction was more attractive compared to a capsule shaped bacterium approaching vertically. The orientation of the bacterial approaching a surface as well as the type and topology of the mineral influence the adhesion of a bacteria to that surface. Furthermore, the density difference among each type of bacteria shape (capsule, cylinder, and sphere) require different amounts of energy to adhere to hematite and quartz surfaces. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
format Article
author Mohamed Zuki, Fathiah
Edyvean, Robert G.J.
Pourzolfaghar, Hamed
Kasim, Norherdawati
author_facet Mohamed Zuki, Fathiah
Edyvean, Robert G.J.
Pourzolfaghar, Hamed
Kasim, Norherdawati
author_sort Mohamed Zuki, Fathiah
title Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
title_short Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
title_full Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
title_fullStr Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
title_full_unstemmed Modeling of the van der Waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
title_sort modeling of the van der waals forces during the adhesion of capsule-shaped bacteria to flat surfaces
publisher MDPI
publishDate 2021
url http://eprints.um.edu.my/25876/1/25876.pdf
http://eprints.um.edu.my/25876/
https://doi.org/10.3390/biomimetics6010005
_version_ 1698697312803487744
score 13.211869

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