University of Groningen
Light switchable surface topographies
Liu, Ling
IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below.
Document Version
Publisher's PDF, also known as Version of record
Publication date: 2018
Link to publication in University of Groningen/UMCG research database
Citation for published version (APA):
Liu, L. (2018). Light switchable surface topographies: Modelling and design of photo responsive topographical changes of liquid crystal polymer films. Rijksuniversiteit Groningen.
Copyright
Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).
Take-down policy
If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum.
PROPOSITIONS belonging to the PhD thesis
Light Switchable Surface Topographies
Modelling and Design of Light Responsive Topographical Changes of Liquid Crystal Polymers
by
Ling Liu
1. Liquid crystal polymers are excellent candidates for responsive materials and switchable surfaces: when co-polymerized with active components, they are sensitive to diverse stimuli, and respond quickly and substan-tially. More importantly, they are very flexible to design. (Chapter 1 ) 2. The director distribution and thickness of a liquid crystal coating both determine the texture and magnitude of its topographical change during
actuation. (Chapter 2 )
3. Using a strong light intensity for thick films or a weak light intensity for thin films, are both able to generate travelling waves on liquid crystal films under rotating polarized light. (Chapter 3 ) 4. Big things have small beginnings — from the film “Lawrence of Arabia”
and the films in Chapter 4. (Chapter 4 )
5. The optimal wavelength of light for the actuation of azobenzene-modified liquid crystal polymers is not that of the ultra-violet regime which trans azobenzenes absorb most (365 µm), but that of a 30 µm shift towards
the visible light regime. (Chapter 5 )
6. Trying to obtain a PhD degree is like hiking a mountain: during the journey you only focus on the mountain and tracks upwards. Finishing the PhD is like being on top of the mountain, where you see many other
