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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/13/5/799 |
| _version_ | 1797497788657827840 |
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| author | Seonghyeon Lee Woojun Jung Kyungho Ko Yongha Hwang |
| author_facet | Seonghyeon Lee Woojun Jung Kyungho Ko Yongha Hwang |
| author_sort | Seonghyeon Lee |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T03:24:17Z |
| format | Article |
| id | doaj.art-a79376fc5b7443f58dc15f7a6be0bc3d |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T03:24:17Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-a79376fc5b7443f58dc15f7a6be0bc3d2023-11-23T12:13:23ZengMDPI AGMicromachines2072-666X2022-05-0113579910.3390/mi13050799Wireless Micro Soft Actuator without Payloads Using 3D Helical CoilsSeonghyeon Lee0Woojun Jung1Kyungho Ko2Yongha Hwang3Department of Control and Instrumentation Engineering, Korea University, Sejong 30019, KoreaDepartment of Control and Instrumentation Engineering, Korea University, Sejong 30019, KoreaDepartment of Control and Instrumentation Engineering, Korea University, Sejong 30019, KoreaDepartment of Control and Instrumentation Engineering, Korea University, Sejong 30019, KoreaTo 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.https://www.mdpi.com/2072-666X/13/5/7993D helical inductorswireless actuatorsmagnetic inductionliquid–gas phase changessoft actuators |
| spellingShingle | Seonghyeon Lee Woojun Jung Kyungho Ko Yongha Hwang Wireless Micro Soft Actuator without Payloads Using 3D Helical Coils Micromachines 3D helical inductors wireless actuators magnetic induction liquid–gas phase changes soft actuators |
| 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 | 3D helical inductors wireless actuators magnetic induction liquid–gas phase changes soft actuators |
| url | https://www.mdpi.com/2072-666X/13/5/799 |
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