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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Debije, Michael G.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2023Status report on emerging photovoltaicscitations
- 2023Status report on emerging photovoltaicscitations
- 2023Switching between 3D surface topographies in liquid crystal elastomer coatings using two-step imprint lithographycitations
- 2022Hydrogen-Bonded Supramolecular Liquid Crystal Polymers: Smart Materials with Stimuli-Responsive, Self-Healing, and Recyclable Propertiescitations
- 2022Temperature responsive 4D liquid crystal microactuators fabricated by direct laser writing by two-photon polymerizationcitations
- 2021High thermal conductivity in anisotropic aligned polymeric materialscitations
- 20213D anisotropic polyethylene as light-responsive grippers and surfing diverscitations
- 2021Triple-Shape-Memory Soft Actuators from an Interpenetrating Network of Hybrid Liquid Crystalscitations
- 2021Liquid crystalline polymer particles prepared by classical polymerization techniquescitations
- 2021NIR–vis–UV Light-Responsive High Stress-Generating Polymer Actuators with a Reduced Creep Ratecitations
- 2021Patterned Actuators via Direct Ink Writing of Liquid Crystalscitations
- 2021Optical UV dosimeters based on photoracemization of (R)-(+)-1,1′-bi(2-napthol) (BINOL) within a chiral nematic liquid crystalline matrix
- 2020Stimuli-Responsive Shape Changing Commodity Polymer Composites and Bilayerscitations
- 2019An untethered magnetic- and light-responsive rotary gripper: shedding light on photoresponsive liquid crystal actuatorscitations
- 2019Butterfly proboscis-inspired tight rolling tapered soft actuatorscitations
- 2016A chaotic self-oscillating sunlight driven polymer actuatorcitations
- 2014The role of supramolecular chemistry in stimuli responsive and hierarchically structured functional organic materials
Places of action
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article
Switching between 3D surface topographies in liquid crystal elastomer coatings using two-step imprint lithography
Abstract
While dynamic surface topographies are fabricated using liquid crystal (LC) polymers, switching between two distinct 3D topographies remains challenging. In this work, two switchable 3D surface topographies are created in LC elastomer (LCE) coatings using a two-step imprint lithography process. A first imprinting creates a surface microstructure on the LCE coating which is polymerized by a base catalyzed partial thiol-acrylate crosslinking step. The structured coating is then imprinted with a second mold to program the second topography, which is subsequently fully polymerized by light. The resulting LCE coatings display reversible surface switching between the two programmed 3D states. By varying the molds used during the two imprinting steps, diverse dynamic topographies can be achieved. For example, by using grating and rough molds sequentially, switchable surface topographies between a random scatterer and an ordered diffractor are achieved. Additionally, by using negative and positive triangular prism molds consecutively, dynamic surface topographies switching between two 3D structural states are achieved, driven by differential order/disorder transitions in the different areas of the film. It is anticipated that this platform of dynamic 3D topological switching can be used for many applications, including antifouling and biomedical surfaces, switchable friction elements, tunable optics, and beyond.