We, the group Membrain, want to analyze membrains in nature for selective filtering in health care.

With the increasing usage of plastics in the world, microplastic in the water supply and the ocean creates problems even in our own body and thus our goal is to create a filter, which applies filter-feeder-mechanisms such as the ricochet system used by Manta Rays, in order to effectively filter microplastics without clogging up.

Our main target is to create a demonstration prototype on scale, that encorporates well known filtration mechanisms and borrows from examples like Salps and Manta Rays, and to research the effect of microplastics on the human body.

It is in this way that we want to live up to 2022's call "Learning from Nature"!


  • Laura Gentner (Mechanical Engineering)
  • Tobias Loferer (Medicine)
  • Emilia Litzka (Mechanical Engineering)
  • Lenz Pracher (Physics)
  • Benjamin Villard (Mechanical Engineering)
  • Constantin von Witzleben (Engineering Science)
  • Julius Johannes Wenzler (Management and Technology + Medicine)

Concepts like the Manta Ray Ricochet Filter have been explored before, but with our unique mix of disciplines, we hope to derive creative solutions to the problem of microplastics and its impact on the human body.


The next step: Simulation

After building a prototype and testing out its limits. We have identified some issues and are playing around with different designs and flow speeds to figure out an optimal way to utilize the ricochet effect. The ricochet effect only works, if the fins are oriented in such a way, that certain vertices are created at the end of them.


  • Martin Zirngibl
  • Dina Aladawy