TY - JOUR
T1 - Re- and preconfigurable multistable visible light responsive surface topographies
AU - Hendrikx, Matthew
AU - ter Schiphorst, Jeroen
AU - van Heeswijk, Ellen P.A.
AU - Koçer, Gülistan
AU - Knie, Christopher
AU - Bléger, David
AU - Hecht, Stefan
AU - Jonkheijm, Pascal
AU - Broer, Dirk J.
AU - Schenning, Albertus P.H.J.
PY - 2018/12/13
Y1 - 2018/12/13
N2 - Light responsive materials that are able to change their shape are becoming increasingly important. However, preconfigurable bistable or even multi-stable visible light responsive coatings have not been reported yet. Such materials will require less energy to actuate and will have a longer lifetime. Here, it is shown that fluorinated azobenzenes can be used to create rewritable and pre-configurable responsive surfaces that show multi-stable topographies. These surface structures can be formed and removed by using low intensity green and blue light, respectively. Multistable preconfigured surface topographies can also be created in the absence of a mask. The method allows for full control over the surface structures as the topographical changes are directly linked to the molecular isomerization processes. Preliminary studies reveal that these light responsive materials are suitable as adaptive biological surfaces.
AB - Light responsive materials that are able to change their shape are becoming increasingly important. However, preconfigurable bistable or even multi-stable visible light responsive coatings have not been reported yet. Such materials will require less energy to actuate and will have a longer lifetime. Here, it is shown that fluorinated azobenzenes can be used to create rewritable and pre-configurable responsive surfaces that show multi-stable topographies. These surface structures can be formed and removed by using low intensity green and blue light, respectively. Multistable preconfigured surface topographies can also be created in the absence of a mask. The method allows for full control over the surface structures as the topographical changes are directly linked to the molecular isomerization processes. Preliminary studies reveal that these light responsive materials are suitable as adaptive biological surfaces.
KW - configurable surface actuation
KW - fluorinated azobenzenes
KW - multistable topographies
KW - visible light responsive liquid crystal networks
UR - http://www.scopus.com/inward/record.url?scp=85055581470&partnerID=8YFLogxK
U2 - 10.1002/smll.201803274
DO - 10.1002/smll.201803274
M3 - Article
C2 - 30353702
AN - SCOPUS:85055581470
VL - 14
JO - Small
JF - Small
SN - 1613-6810
IS - 50
M1 - 1803274
ER -