ChBiPhMaCoMt

Force protocols in self-propulsion - how to win a micro-swimming competition (Microswimmers lecture series)

date
27.03.2019 
time
04:00 PM - 05:00 PM 
speaker
Ana Suncana-Smith 
affiliation
FAU Erlangen-Nuremberg 
part of series
TUD Lecture series - Microswimmers 
language
en 
main topic
Chemistry: Inorganic Chemistry, Biochemistry
subtopics
Biology: Cell Biology (incl. Molecular, Structural), Microbiology
Physics: Theoretical Physics, Condensed Matter (incl. Soft, Solid)
Mathematics: Numerics, Stochastics
Computer Science: Bioinformatics
Materials: Biomimetics
host
Juliane Simmchen, Veronika Magdanz, Benjamin Friedrich 
abstract

Microswimming usually denotes with active motion at low Reynolds numbers. It requires breaking of the time-reversal symmetry of the stroke responsible for motion. Several analytical approaches were able to provide profound insights in the mechanisms underlying this locomotion, however, in most cases, the stroke of the swimmer is prescribed a-priori. The disadvantage of this approach is the inability of the swimmer to respond to changes in the environment. This is circumvented in the approach where driving forces are imposed on the swimmer, while the stroke emerges as a result of hydrodynamic and other direct interactions in the system. The difficulty with this approach is that it is only available for a limited number of swimmer models. One of those, attracting increasing attention recently, is the class of bead-spring swimmers describing devices that are composed of spherical or ellipsoidal beads and springs connecting them with a force exciting and driving the apparatus. In this talk, I will present a general calculation scheme for the translational and angular velocity as well the efficiency, which is amenable to a wide range of bead-spring swimmers. The effect of shape, elasticity, and hydrodynamic interactions will be discussed in detail.

 

Last update: 18.03.2019 21:26.

venue 

TUD Hörsaalzentrum (HSZ/E05) 
Bergstraße 64
01069 Dresden
telefon
+49 351 463-34457 
fax
+49 351 463-32883 
e-mail
TUD Hörsaalzentrum 
homepage
http://tu-dresden.de/service/raumvermietung/hoersaalzentrum/ 

organizer 

TUD Bereich Mathematik und Naturwissen­schaften (TUD Bereich MathNat)
Zellescher Weg 12-14
01069 Dresden
telefon
+49 351 463-37512 
fax
+49 351 463-37737 
e-mail
TUD Bereich Mathematik und Naturwissen­schaften (TUD Bereich MathNat) 
homepage
https://tu-dresden.de/mn/ 
Scan this code with your smartphone and get directly this event in your calendar. Increase the image size by clicking on the QR-Code if you have problems to scan it.