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Bioinspired polymer microstructures for directional transport of oily liquids

View Article: PubMed Central - PubMed

ABSTRACT

Nature has always served as an inspiration for scientists, helping them to solve a large diversity of technical problems. In our case, we are interested in the directional transport of oily liquids and as a model for this application we used the flat bug Dysodius lunatus. In this report, we present arrays of drops looking like polymer microstructures produced by the two-photon polymerization technique that mimic the micro-ornamentation from the bug's cuticle. A good directionality of oil transport was achieved, directly controlled by the direction of the pointed microstructures at the surface. If the tips of the drop-like microstructures are pointing towards the left side, the liquid front moves to the right and vice versa. Similar effects could be expected for the transport of oily lubricants. These results could, therefore, be interesting for applications in friction and wear reduction.

No MeSH data available.


(a) 4 × 4 drop-like microstructure array CAD design. (b) SEM micrographs of the 4 × 4 drop-like microstructure array, viewed from top (white arrow shows the preferential flow direction) and (c) viewed from a tilt angle of 45°.
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RSOS160849F4: (a) 4 × 4 drop-like microstructure array CAD design. (b) SEM micrographs of the 4 × 4 drop-like microstructure array, viewed from top (white arrow shows the preferential flow direction) and (c) viewed from a tilt angle of 45°.

Mentions: The three-dimensional design of the drop-like microstructure arrays was executed using the SketchUp Make software (figures 4a and 5a). Further, the computer-aided designs (CADs) were saved in stereolithography format (.stl) and uploaded into a cross-platform program (Keep It Simple Slicer, KISSlicer) that uses .stl files to generate a path code (.gcode) for the piezo-electric stage.Figure 4.


Bioinspired polymer microstructures for directional transport of oily liquids
(a) 4 × 4 drop-like microstructure array CAD design. (b) SEM micrographs of the 4 × 4 drop-like microstructure array, viewed from top (white arrow shows the preferential flow direction) and (c) viewed from a tilt angle of 45°.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5383830&req=5

RSOS160849F4: (a) 4 × 4 drop-like microstructure array CAD design. (b) SEM micrographs of the 4 × 4 drop-like microstructure array, viewed from top (white arrow shows the preferential flow direction) and (c) viewed from a tilt angle of 45°.
Mentions: The three-dimensional design of the drop-like microstructure arrays was executed using the SketchUp Make software (figures 4a and 5a). Further, the computer-aided designs (CADs) were saved in stereolithography format (.stl) and uploaded into a cross-platform program (Keep It Simple Slicer, KISSlicer) that uses .stl files to generate a path code (.gcode) for the piezo-electric stage.Figure 4.

View Article: PubMed Central - PubMed

ABSTRACT

Nature has always served as an inspiration for scientists, helping them to solve a large diversity of technical problems. In our case, we are interested in the directional transport of oily liquids and as a model for this application we used the flat bug Dysodius lunatus. In this report, we present arrays of drops looking like polymer microstructures produced by the two-photon polymerization technique that mimic the micro-ornamentation from the bug's cuticle. A good directionality of oil transport was achieved, directly controlled by the direction of the pointed microstructures at the surface. If the tips of the drop-like microstructures are pointing towards the left side, the liquid front moves to the right and vice versa. Similar effects could be expected for the transport of oily lubricants. These results could, therefore, be interesting for applications in friction and wear reduction.

No MeSH data available.