Photoactuation of micromechanical devices by photochromic molecules

被引：15

作者：

Angulo-Cervera, Jose Elias ^{[1
,2
,3
,4
]}

Piedrahita-Bello, Mario ^{[1
,2
,3
,4
]}

Brachnakova, Barbora ^{[1
,2
,5
]}

Enriquez-Cabrera, Alejandro ^{[1
,2
]}

Nicu, Liviu ^{[3
,4
]}

Leichle, Thierry ^{[3
,4
,6
]}

Mathieu, Fabrice ^{[3
,4
]}

Routaboul, Lucie ^{[1
,2
]}

Salmon, Lionel ^{[1
,2
]}

Molnar, Gabor ^{[1
,2
]}

Bousseksou, Azzedine ^{[1
,2
]}

机构：

[1] CNRS, LCC, 205 Route Narbonne, F-31077 Toulouse, France

[2] Univ Toulouse, 205 Route Narbonne, F-31077 Toulouse, France

[3] CNRS, LAAS, 7 Ave Colonel Roche, F-31400 Toulouse, France

[4] Univ Toulouse, 7 Ave Colonel Roche, F-31400 Toulouse, France

[5] Slovak Univ Technol Bratislava, Fac Chem & Food Technol, Dept Inorgan Chem, SK-81237 Bratislava, Slovakia

[6] Georgia Tech, Sch Elect & Comp Engn, Int Res Lab, CNRS, Atlantic Dr, Atlanta, GA 30332 USA

来源：

MATERIALS ADVANCES | 2021年 / 2卷 / 15期

关键词：

PHOTORESIST; FABRICATION; SYSTEMS;

D O I：

10.1039/d1ma00480h

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spiropyran doped P(VDF-TrFE) nanocomposite films were spray-coated onto silicon micro-cantilevers. We show that switching the molecules from the closed- to the open-ring form by UV light gives rise to a downward bending of the cantilever as well as to a decrease of its resonance frequency. This photoactuation is reversible by means of heating and simultaneous visible light irradiation. From the flexural bending and resonance data, we extracted the actuation strain (0.13 +/- 0.03%), stress (4 +/- 1 MPa) and elastic energy density (2.3 +/- 1 mJ cm(-3)) associated with the photoisomerization of spiropyran molecules in the composite films.

引用

页码：5057 / 5061

页数：5

共 34 条

[1] SYNTHESIS AND PROPERTIES OF AZOAROMATIC POLYMERS [J].