Abstract
The ability to induce oscillating surface topographies in light-responsive liquid crystal networks on-demand by light is interesting for applications in soft robotics, self-cleaning surfaces, and haptics. However, the common height of these surface features is in the range of tens of nanometer, which limits their applications. Here a photoresponsive liquid crystal network coating with a patterned director motive exhibiting surface features that oscillate dynamically when addressed by light with modulated polarization is reported. By utilizing a compliant intermediate layer, the surface topographies increase with a factor 10, from roughly 70–100 nm to 1 µm. This increase in topography height is accompanied by a superimposed dynamic oscillation with an amplitude of ≈100 nm. These values can be translated to a 16.7% average static strain with 3.3% oscillations with respect to the coating thickness. Moreover, utilizing the complying support increases the maximum rotation speeds with an in-phase response from 2.5 up to 25° s−1. However, at this maximized rotation speed the oscillation amplitude decreases to about half of the initial value.
| Language | English |
|---|---|
| Article number | 1800810 |
| Number of pages | 6 |
| Journal | Advanced Materials Interfaces |
| Volume | 5 |
| Issue number | 20 |
| DOIs | |
| State | Published - 21 Aug 2018 |
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Keywords
- adaptive surfaces
- compliance-mediated
- light-responsive coatings
- liquid crystal composite
- oscillating topographies
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Compliance-mediated topographic oscillation of polarized light triggered liquid crystal coating. / Hendrikx, Matthew; Sırma, Burcu; Schenning, Albertus P.H.J.; Liu, Danqing; Broer, Dirk J.
In: Advanced Materials Interfaces, Vol. 5, No. 20, 1800810, 21.08.2018.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Compliance-mediated topographic oscillation of polarized light triggered liquid crystal coating
AU - Hendrikx,Matthew
AU - Sırma,Burcu
AU - Schenning,Albertus P.H.J.
AU - Liu,Danqing
AU - Broer,Dirk J.
PY - 2018/8/21
Y1 - 2018/8/21
N2 - The ability to induce oscillating surface topographies in light-responsive liquid crystal networks on-demand by light is interesting for applications in soft robotics, self-cleaning surfaces, and haptics. However, the common height of these surface features is in the range of tens of nanometer, which limits their applications. Here a photoresponsive liquid crystal network coating with a patterned director motive exhibiting surface features that oscillate dynamically when addressed by light with modulated polarization is reported. By utilizing a compliant intermediate layer, the surface topographies increase with a factor 10, from roughly 70–100 nm to 1 µm. This increase in topography height is accompanied by a superimposed dynamic oscillation with an amplitude of ≈100 nm. These values can be translated to a 16.7% average static strain with 3.3% oscillations with respect to the coating thickness. Moreover, utilizing the complying support increases the maximum rotation speeds with an in-phase response from 2.5 up to 25° s−1. However, at this maximized rotation speed the oscillation amplitude decreases to about half of the initial value.
AB - The ability to induce oscillating surface topographies in light-responsive liquid crystal networks on-demand by light is interesting for applications in soft robotics, self-cleaning surfaces, and haptics. However, the common height of these surface features is in the range of tens of nanometer, which limits their applications. Here a photoresponsive liquid crystal network coating with a patterned director motive exhibiting surface features that oscillate dynamically when addressed by light with modulated polarization is reported. By utilizing a compliant intermediate layer, the surface topographies increase with a factor 10, from roughly 70–100 nm to 1 µm. This increase in topography height is accompanied by a superimposed dynamic oscillation with an amplitude of ≈100 nm. These values can be translated to a 16.7% average static strain with 3.3% oscillations with respect to the coating thickness. Moreover, utilizing the complying support increases the maximum rotation speeds with an in-phase response from 2.5 up to 25° s−1. However, at this maximized rotation speed the oscillation amplitude decreases to about half of the initial value.
KW - adaptive surfaces
KW - compliance-mediated
KW - light-responsive coatings
KW - liquid crystal composite
KW - oscillating topographies
UR - http://www.scopus.com/inward/record.url?scp=85052374885&partnerID=8YFLogxK
U2 - 10.1002/admi.201800810
DO - 10.1002/admi.201800810
M3 - Article
VL - 5
JO - Advanced Materials Interfaces
T2 - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
SN - 2196-7350
IS - 20
M1 - 1800810
ER -