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Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils

To receive a greater power and to demonstrate the soft bellows-shaped actuator’s wireless actuation, micro inductors were built for wireless power transfer and realized in a three-dimensional helical structure, which have previously been built in two-dimensional spiral structures. Although the three...

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Autores principales: Lee, Seonghyeon, Jung, Woojun, Ko, Kyungho, Hwang, Yongha
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9143378/
https://www.ncbi.nlm.nih.gov/pubmed/35630265
http://dx.doi.org/10.3390/mi13050799
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author Lee, Seonghyeon
Jung, Woojun
Ko, Kyungho
Hwang, Yongha
author_facet Lee, Seonghyeon
Jung, Woojun
Ko, Kyungho
Hwang, Yongha
author_sort Lee, Seonghyeon
collection PubMed
description To receive a greater power and to demonstrate the soft bellows-shaped actuator’s wireless actuation, micro inductors were built for wireless power transfer and realized in a three-dimensional helical structure, which have previously been built in two-dimensional spiral structures. Although the three-dimensional helical inductor has the advantage of acquiring more magnetic flux linkage than the two-dimensional spiral inductor, the existing microfabrication technique produces a device on a two-dimensional plane, as it has a limit to building a complete three-dimensional structure. In this study, by using a three-dimensional printed soluble mold technique, a three-dimensional heater with helical coils, which have a larger heating area than a two-dimensional heater, was fabricated with three-dimensional receiving inductors for enhanced wireless power transfer. The three-dimensional heater connected to the three-dimensional helical inductor increased the temperature of the liquid and gas inside the bellows-shaped actuator while reaching 176.1% higher temperature than the heater connected to the two-dimensional spiral inductor. Thereby it enables a stroke of the actuator up to 522% longer than when it is connected to the spiral inductor. Therefore, three-dimensional micro coils can offer a significant approach to the development of wireless micro soft robots without incurring heavy and bulky parts such as batteries.
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spelling pubmed-91433782022-05-29 Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils Lee, Seonghyeon Jung, Woojun Ko, Kyungho Hwang, Yongha Micromachines (Basel) Article To receive a greater power and to demonstrate the soft bellows-shaped actuator’s wireless actuation, micro inductors were built for wireless power transfer and realized in a three-dimensional helical structure, which have previously been built in two-dimensional spiral structures. Although the three-dimensional helical inductor has the advantage of acquiring more magnetic flux linkage than the two-dimensional spiral inductor, the existing microfabrication technique produces a device on a two-dimensional plane, as it has a limit to building a complete three-dimensional structure. In this study, by using a three-dimensional printed soluble mold technique, a three-dimensional heater with helical coils, which have a larger heating area than a two-dimensional heater, was fabricated with three-dimensional receiving inductors for enhanced wireless power transfer. The three-dimensional heater connected to the three-dimensional helical inductor increased the temperature of the liquid and gas inside the bellows-shaped actuator while reaching 176.1% higher temperature than the heater connected to the two-dimensional spiral inductor. Thereby it enables a stroke of the actuator up to 522% longer than when it is connected to the spiral inductor. Therefore, three-dimensional micro coils can offer a significant approach to the development of wireless micro soft robots without incurring heavy and bulky parts such as batteries. MDPI 2022-05-20 /pmc/articles/PMC9143378/ /pubmed/35630265 http://dx.doi.org/10.3390/mi13050799 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lee, Seonghyeon
Jung, Woojun
Ko, Kyungho
Hwang, Yongha
Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils
title Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils
title_full Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils
title_fullStr Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils
title_full_unstemmed Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils
title_short Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils
title_sort wireless micro soft actuator without payloads using 3d helical coils
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9143378/
https://www.ncbi.nlm.nih.gov/pubmed/35630265
http://dx.doi.org/10.3390/mi13050799
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