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Laser-induced Nanostructures as Biomimetic Model of Fluid Transport in the Integument of Animals

Objective

The integument of an animal body has various functions, which are often achieved by specific micro- and/or nano- hierarchical structures. Examples are the very low water friction and air retention of water spiders or the swim fern of salvinia and the outstanding adhesion properties of geckos. In this project, we will employ advanced laser-processing strategies based on self-organization, to mimic the specific topography and the excellent wetting properties of the integument of bark bugs and moisture harvesting lizards resulting from adaptations to their environment. Flat bark bugs darken during rain fall due to a super-wettable body surface with capillaries out of which water spreads onto plain areas of the bug. For moisture harvesting in lizards wettability takes place in opposed direction, i.e. from plain areas into a capillary network on the skin. A fast and directional transport results from a special geometry of capillaries. Thus as general objective we want to test whether both effects, i.e. fast capillary transport (lizard) and liquid spreading onto plain areas (bark bugs), can be combined by optimized structures with hierarchical geometry. The outcome of this innovative biomimetic exploitation of wetting effects is expected to lead to a radically new technological approach of laser-generated surface textures on micro- and nanometer scale. Especially for control of friction and wear in liquids, leveraging new results can be expected, e.g. for developing slide bearings. The extension of surface structures over large areas is feasible. Thus, laser-fabrication of biomimetic surfaces with extreme wetting properties can be also anticipated in further applications, e.g. lubrication, water and oil separation, reduced drag in underwater applications, high power device cooling. All related to an innovative and sustainable reduction of CO2 emission.

Field of science

  • /engineering and technology/mechanical engineering/tribology/lubrication
  • /natural sciences/physical sciences/astronomy/planetary science/planetary geology
  • /natural sciences/mathematics/pure mathematics/geometry
  • /social sciences/social and economic geography/transport

Call for proposal

H2020-FETOPEN-2014-2015-RIA
See other projects for this call

Funding Scheme

RIA - Research and Innovation action

Coordinator

IDRYMA TECHNOLOGIAS KAI EREVNAS
Address
N Plastira Str 100
70013 Irakleio
Greece
Activity type
Research Organisations
EU contribution
€ 492 250

Participants (6)

AGENCIA ESTATAL CONSEJO SUPERIOR DEINVESTIGACIONES CIENTIFICAS
Spain
EU contribution
€ 390 082,50
Address
Calle Serrano 117
28006 Madrid
Activity type
Research Organisations
UNIVERSITAT LINZ
Austria
EU contribution
€ 533 007,50
Address
Altenberger Strasse 69
4040 Linz
Activity type
Higher or Secondary Education Establishments
RHEINISCH-WESTFAELISCHE TECHNISCHE HOCHSCHULE AACHEN
Germany
EU contribution
€ 422 625
Address
Templergraben 55
52062 Aachen
Activity type
Higher or Secondary Education Establishments
BUNDESANSTALT FUER MATERIALFORSCHUNG UND -PRUEFUNG
Germany
EU contribution
€ 428 750
Address
Unter Den Eichen 87
12205 Berlin
Activity type
Research Organisations
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Germany
EU contribution
€ 484 096
Address
Hansastrasse 27C
80686 Munchen
Activity type
Research Organisations
HIGH TECH COATINGS GMBH
Austria
EU contribution
€ 274 016
Address
Dr Mitterbauer Strasse 3
4663 Laakirchen
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)