hrcak mascot   Srce   HID

Izvorni znanstveni članak

Microfluidic simulation of a colonial diatom chain reveals oscillatory movement

Johannes Srajer ; Institut für Allgemeine Physik Vienna University of Technology, Wiedner Hauptstrasse 8-10/134, 1040 Wien, Austria; TU BIONIK Center of Excellence for Biomimetics, Vienna University of Technology Getreidemarkt 9/134, 1060 Wien, Austria
Burhanuddin J. Majlis ; Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia 43600 UKM, Bangi, Selangor, Malaysia
Ille C. Gebeshuber   ORCID icon orcid.org/0000-0001-8879-2302 ; Institut für Allgemeine Physik Vienna University of Technology, Wiedner Hauptstrasse 8-10/134, 1040 Wien, Austria; TU BIONIK Center of Excellence for Biomimetics, Vienna University of Technology Getreidemarkt 9/134, 1060 Wien, Austria; Institute of Microe

Puni tekst: engleski, pdf (227 KB) str. 431-441 preuzimanja: 669* citiraj
APA 6th Edition
Srajer, J., Majlis, B.J. i Gebeshuber, I.C. (2009). Microfluidic simulation of a colonial diatom chain reveals oscillatory movement. Acta Botanica Croatica, 68 (2), 431-441. Preuzeto s https://hrcak.srce.hr/41440
MLA 8th Edition
Srajer, Johannes, et al. "Microfluidic simulation of a colonial diatom chain reveals oscillatory movement." Acta Botanica Croatica, vol. 68, br. 2, 2009, str. 431-441. https://hrcak.srce.hr/41440. Citirano 28.10.2021.
Chicago 17th Edition
Srajer, Johannes, Burhanuddin J. Majlis i Ille C. Gebeshuber. "Microfluidic simulation of a colonial diatom chain reveals oscillatory movement." Acta Botanica Croatica 68, br. 2 (2009): 431-441. https://hrcak.srce.hr/41440
Harvard
Srajer, J., Majlis, B.J., i Gebeshuber, I.C. (2009). 'Microfluidic simulation of a colonial diatom chain reveals oscillatory movement', Acta Botanica Croatica, 68(2), str. 431-441. Preuzeto s: https://hrcak.srce.hr/41440 (Datum pristupa: 28.10.2021.)
Vancouver
Srajer J, Majlis BJ, Gebeshuber IC. Microfluidic simulation of a colonial diatom chain reveals oscillatory movement. Acta Botanica Croatica [Internet]. 2009 [pristupljeno 28.10.2021.];68(2):431-441. Dostupno na: https://hrcak.srce.hr/41440
IEEE
J. Srajer, B.J. Majlis i I.C. Gebeshuber, "Microfluidic simulation of a colonial diatom chain reveals oscillatory movement", Acta Botanica Croatica, vol.68, br. 2, str. 431-441, 2009. [Online]. Dostupno na: https://hrcak.srce.hr/41440. [Citirano: 28.10.2021.]

Sažetak
Diatoms are single-celled organisms with rigid parts in relative motion at the micro- and nanometer length scales. Some diatom species form colonies comprising many cells. In this manuscript, the results of a two-dimensional finite element computer model are presented. This model was established to discover if diatom colonies start to exhibit some kind of »pumping« behaviour when subjected to water flow. To analyze this computationally, a model diatom colony with continuously repeated units of ten cells is investigated in a fluid dynamic simulation. In this first simple model, undisturbed fluid flow is allowed for between the single cells. The cells do not move actively, and are solely moved by the water. The initial fluid velocity is assumed between 0.01 m s–1 and 1 m s–1. Acomputational result that does not change anymore with time is called a steady state solution. Such a steady state solution is reached in all calculations performed. The steady state for a chain where initially all diatoms are spaced equally (equidistant spacing) has forces that encourage the formation of cell pairs with less distance between one another. These forces result from the flow of the surrounding fluid. The steady state for a chain with initially paired cells shows the opposite effect: the pairs tend to un-pair and head for the equidistant state again. The mutual change in forces between these two states, i.e., paired and unpaired formations, suggests that these two steady states lead into each other: The computer simulations suggest that a diatom colony subjected to water flow exhibits some kind of oscillatory movement. Such movement might facilitate nutrient uptake of the diatom colony.

Ključne riječi
Diatom chain; fluid dynamics; hydroelastics; nutrient uptake; computer simulation

Hrčak ID: 41440

URI
https://hrcak.srce.hr/41440

Posjeta: 1.026 *