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Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale

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Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale. / Zeng, Hao; Wasylczyk, Piotr; Parmeggiani, Camilla; Martella, Daniele; Wiersma, Diederik Sybolt.

In: Jove-Journal of visualized experiments, No. 111, 53744, 05.2016.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Zeng, H, Wasylczyk, P, Parmeggiani, C, Martella, D & Wiersma, DS 2016, 'Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale', Jove-Journal of visualized experiments, no. 111, 53744. https://doi.org/10.3791/53744

APA

Zeng, H., Wasylczyk, P., Parmeggiani, C., Martella, D., & Wiersma, D. S. (2016). Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale. Jove-Journal of visualized experiments, (111), [53744]. https://doi.org/10.3791/53744

Vancouver

Zeng H, Wasylczyk P, Parmeggiani C, Martella D, Wiersma DS. Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale. Jove-Journal of visualized experiments. 2016 May;(111). 53744. https://doi.org/10.3791/53744

Author

Zeng, Hao ; Wasylczyk, Piotr ; Parmeggiani, Camilla ; Martella, Daniele ; Wiersma, Diederik Sybolt. / Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale. In: Jove-Journal of visualized experiments. 2016 ; No. 111.

Bibtex - Download

@article{8e7cc8e85d5e434188310d9c6bdc609c,
title = "Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale",
abstract = "Liquid crystalline elastomers (LCEs) are smart materials capable of reversible shape-change in response to external stimuli, and have attracted researchers' attention in many fields. Most of the studies focused on macroscopic LCE structures (films, fibers) and their miniaturization is still in its infancy. Recently developed lithography techniques, e.g., mask exposure and replica molding, only allow for creating 2D structures on LCE thin films. Direct laser writing (DLW) opens access to truly 3D fabrication in the microscopic scale. However, controlling the actuation topology and dynamics at the same length scale remains a challenge.In this paper we report on a method to control the liquid crystal (LC) molecular alignment in the LCE microstructures of arbitrary three-dimensional shape. This was made possible by a combination of direct laser writing for both the LCE structures as well as for micrograting patterns inducing local LC alignment. Several types of grating patterns were used to introduce different LC alignments, which can be subsequently patterned into the LCE structures. This protocol allows one to obtain LCE microstructures with engineered alignments able to perform multiple opto-mechanical actuation, thus being capable of multiple functionalities. Applications can be foreseen in the fields of tunable photonics, micro-robotics, lab-on-chip technology and others.",
keywords = "Engineering, Issue 111, Direct laser writing, liquid crystalline elastomers, liquid crystal alignment, photolithography, 3D fabrication, microactuators, microstructures, smart materials, light driven, LASER",
author = "Hao Zeng and Piotr Wasylczyk and Camilla Parmeggiani and Daniele Martella and Wiersma, {Diederik Sybolt}",
year = "2016",
month = "5",
doi = "10.3791/53744",
language = "English",
journal = "Jove-Journal of visualized experiments",
issn = "1940-087X",
publisher = "JOURNAL OF VISUALIZED EXPERIMENTS",
number = "111",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Free-form Light Actuators - Fabrication and Control of Actuation in Microscopic Scale

AU - Zeng, Hao

AU - Wasylczyk, Piotr

AU - Parmeggiani, Camilla

AU - Martella, Daniele

AU - Wiersma, Diederik Sybolt

PY - 2016/5

Y1 - 2016/5

N2 - Liquid crystalline elastomers (LCEs) are smart materials capable of reversible shape-change in response to external stimuli, and have attracted researchers' attention in many fields. Most of the studies focused on macroscopic LCE structures (films, fibers) and their miniaturization is still in its infancy. Recently developed lithography techniques, e.g., mask exposure and replica molding, only allow for creating 2D structures on LCE thin films. Direct laser writing (DLW) opens access to truly 3D fabrication in the microscopic scale. However, controlling the actuation topology and dynamics at the same length scale remains a challenge.In this paper we report on a method to control the liquid crystal (LC) molecular alignment in the LCE microstructures of arbitrary three-dimensional shape. This was made possible by a combination of direct laser writing for both the LCE structures as well as for micrograting patterns inducing local LC alignment. Several types of grating patterns were used to introduce different LC alignments, which can be subsequently patterned into the LCE structures. This protocol allows one to obtain LCE microstructures with engineered alignments able to perform multiple opto-mechanical actuation, thus being capable of multiple functionalities. Applications can be foreseen in the fields of tunable photonics, micro-robotics, lab-on-chip technology and others.

AB - Liquid crystalline elastomers (LCEs) are smart materials capable of reversible shape-change in response to external stimuli, and have attracted researchers' attention in many fields. Most of the studies focused on macroscopic LCE structures (films, fibers) and their miniaturization is still in its infancy. Recently developed lithography techniques, e.g., mask exposure and replica molding, only allow for creating 2D structures on LCE thin films. Direct laser writing (DLW) opens access to truly 3D fabrication in the microscopic scale. However, controlling the actuation topology and dynamics at the same length scale remains a challenge.In this paper we report on a method to control the liquid crystal (LC) molecular alignment in the LCE microstructures of arbitrary three-dimensional shape. This was made possible by a combination of direct laser writing for both the LCE structures as well as for micrograting patterns inducing local LC alignment. Several types of grating patterns were used to introduce different LC alignments, which can be subsequently patterned into the LCE structures. This protocol allows one to obtain LCE microstructures with engineered alignments able to perform multiple opto-mechanical actuation, thus being capable of multiple functionalities. Applications can be foreseen in the fields of tunable photonics, micro-robotics, lab-on-chip technology and others.

KW - Engineering

KW - Issue 111

KW - Direct laser writing

KW - liquid crystalline elastomers

KW - liquid crystal alignment

KW - photolithography

KW - 3D fabrication

KW - microactuators

KW - microstructures

KW - smart materials

KW - light driven

KW - LASER

U2 - 10.3791/53744

DO - 10.3791/53744

M3 - Article

JO - Jove-Journal of visualized experiments

JF - Jove-Journal of visualized experiments

SN - 1940-087X

IS - 111

M1 - 53744

ER -