D
Dirk J. Broer
Researcher at Eindhoven University of Technology
Publications - 511
Citations - 20335
Dirk J. Broer is an academic researcher from Eindhoven University of Technology. The author has contributed to research in topics: Liquid crystal & Layer (electronics). The author has an hindex of 65, co-authored 498 publications receiving 17770 citations. Previous affiliations of Dirk J. Broer include Utrecht University & Sumitomo Chemical.
Papers
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Journal ArticleDOI
Programmable and adaptive mechanics with liquid crystal polymer networks and elastomers
Timothy J. White,Dirk J. Broer +1 more
TL;DR: The historical development of liquid crystalline polymeric materials is detailed, with emphasis on the thermally and photogenerated macroscale mechanical responses--such as bending, twisting and buckling--and on local-feature development (primarily related to topographical control).
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Printed artificial cilia from liquid-crystal network actuators modularly driven by light.
Casper L. van Oosten,Cees W. M. Bastiaansen,Cees W. M. Bastiaansen,Dirk J. Broer,Dirk J. Broer +4 more
TL;DR: It is demonstrated that all-polymer microdevices can be fabricated using inkjet printing technology in combination with self-organizing liquid-crystal network actuators, exploiting the self-assembling properties of the liquid crystal to create large strain gradients, and light-driven actuation is chosen to allow simple and remote addressing.
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Molecular machines: nanomotor rotates microscale objects.
Rienk Eelkema,Michael M. Pollard,Javier Vicario,Nathalie Katsonis,Blanca Serrano Ramon,Cees W. M. Bastiaansen,Dirk J. Broer,Dirk J. Broer,Ben L. Feringa +8 more
TL;DR: A synthetic, light-driven molecular motor that is embedded in a liquid-crystal film and can rotate objects placed on the film that exceed the size of the motor molecule by a factor of 10,000.
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Making waves in a photoactive polymer film
Anne Helene Gelebart,Dirk J. Mulder,Michael Varga,Andrew Konya,Ghislaine Vantomme,E. W. Meijer,Robin L. B. Selinger,Dirk J. Broer +7 more
TL;DR: By incorporating azobenzene derivatives with fast cis-to-trans thermal relaxation into liquid-crystal networks, photoactive polymer films are generated that exhibit continuous, directional, macroscopic mechanical waves under constant light illumination, with a feedback loop that is driven by self-shadowing.
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Wide-band reflective polarizers from cholesteric polymer networks with a pitch gradient
TL;DR: In this paper, a gradient in the pitch of the cholesteric helix was introduced to obtain reflection of one of the two circularly polarized components over the entire visible spectrum, which would greatly improve the light yield and energy efficiency of liquidcrystal display devices.