Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting

Linear displacement is used for positioning and scanning, e.g., in robotics at different scales or in scientific instrumentation. Most linear motors are either powered by rotary drives or are driven directly by pressure, electromagnetic forces or a shape change in a medium, such as piezoelectrics or...

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Autores principales:	Mikołaj Rogóż, Jakub Haberko, Piotr Wasylczyk
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	liquid crystal elastomer linear motor actuator smart material rubbing Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/6d5078fdb3794737b0b5a66c34b873c5
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spelling	oai:doaj.org-article:6d5078fdb3794737b0b5a66c34b873c52021-11-11T18:11:37ZLight-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting10.3390/ma142166881996-1944https://doaj.org/article/6d5078fdb3794737b0b5a66c34b873c52021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6688https://doaj.org/toc/1996-1944Linear displacement is used for positioning and scanning, e.g., in robotics at different scales or in scientific instrumentation. Most linear motors are either powered by rotary drives or are driven directly by pressure, electromagnetic forces or a shape change in a medium, such as piezoelectrics or shape-memory materials. Here, we present a centimeter-scale light-powered linear inchworm motor, driven by two liquid crystal elastomer (LCE) accordion-like actuators. The rubbing overwriting technique was used to fabricate the LCE actuators, made of elastomer film with patterned alignment. In the linear motor, a scanned green laser beam induces a sequence of travelling deformations in a pair of actuators that move a gripper, which couples to a shaft via friction moving it with an average speed in the order of millimeters per second. The prototype linear motor demonstrates how LCE light-driven actuators with a limited stroke can be used to drive more complex mechanisms, where large displacements can be achieved, defined only by the technical constrains (the shaft length in our case), and not by the limited strain of the material. Inchworm motors driven by LCE actuators may be scaled down to sub-millimeter size and can be used in applications where remote control and power supply with light, either delivered in free space beams or via fibers, is an advantage.Mikołaj RogóżJakub HaberkoPiotr WasylczykMDPI AGarticleliquid crystal elastomerlinear motoractuatorsmart materialrubbingTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6688, p 6688 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	liquid crystal elastomer linear motor actuator smart material rubbing Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	liquid crystal elastomer linear motor actuator smart material rubbing Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Mikołaj Rogóż Jakub Haberko Piotr Wasylczyk Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting
description	Linear displacement is used for positioning and scanning, e.g., in robotics at different scales or in scientific instrumentation. Most linear motors are either powered by rotary drives or are driven directly by pressure, electromagnetic forces or a shape change in a medium, such as piezoelectrics or shape-memory materials. Here, we present a centimeter-scale light-powered linear inchworm motor, driven by two liquid crystal elastomer (LCE) accordion-like actuators. The rubbing overwriting technique was used to fabricate the LCE actuators, made of elastomer film with patterned alignment. In the linear motor, a scanned green laser beam induces a sequence of travelling deformations in a pair of actuators that move a gripper, which couples to a shaft via friction moving it with an average speed in the order of millimeters per second. The prototype linear motor demonstrates how LCE light-driven actuators with a limited stroke can be used to drive more complex mechanisms, where large displacements can be achieved, defined only by the technical constrains (the shaft length in our case), and not by the limited strain of the material. Inchworm motors driven by LCE actuators may be scaled down to sub-millimeter size and can be used in applications where remote control and power supply with light, either delivered in free space beams or via fibers, is an advantage.
format	article
author	Mikołaj Rogóż Jakub Haberko Piotr Wasylczyk
author_facet	Mikołaj Rogóż Jakub Haberko Piotr Wasylczyk
author_sort	Mikołaj Rogóż
title	Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting
title_short	Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting
title_full	Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting
title_fullStr	Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting
title_full_unstemmed	Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting
title_sort	light-driven linear inchworm motor based on liquid crystal elastomer actuators fabricated with rubbing overwriting
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6d5078fdb3794737b0b5a66c34b873c5
work_keys_str_mv	AT mikołajrogoz lightdrivenlinearinchwormmotorbasedonliquidcrystalelastomeractuatorsfabricatedwithrubbingoverwriting AT jakubhaberko lightdrivenlinearinchwormmotorbasedonliquidcrystalelastomeractuatorsfabricatedwithrubbingoverwriting AT piotrwasylczyk lightdrivenlinearinchwormmotorbasedonliquidcrystalelastomeractuatorsfabricatedwithrubbingoverwriting
_version_	1718431891383648256

Light-Driven Linear Inchworm Motor Based on Liquid Crystal Elastomer Actuators Fabricated with Rubbing Overwriting

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