Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin
Stretchable strain sensors that use a liquid metal (eutectic gallium–indium alloy; E-GaIn) and flexible silicone rubber (Ecoflex) as the support and adhesive layers, respectively, are demonstrated. The flexibility of Ecoflex and the deformability of E-GaIn enable the sensors to be stretched by 100%....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/23/4/1774 |
| _version_ | 1827755632413900800 |
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| author | Takaaki Nishikawa Hisaya Yamane Naoji Matsuhisa Norihisa Miki |
| author_facet | Takaaki Nishikawa Hisaya Yamane Naoji Matsuhisa Norihisa Miki |
| author_sort | Takaaki Nishikawa |
| collection | DOAJ |
| description | Stretchable strain sensors that use a liquid metal (eutectic gallium–indium alloy; E-GaIn) and flexible silicone rubber (Ecoflex) as the support and adhesive layers, respectively, are demonstrated. The flexibility of Ecoflex and the deformability of E-GaIn enable the sensors to be stretched by 100%. Ecoflex gel has sufficiently large adhesion force to skin, even though the adhesion force is smaller than that for commercially available adhesives. This enables the sensor to be used for non-invasive monitoring of human motion. The mechanical and electrical properties of the sensor are experimentally evaluated. The effectiveness of the proposed sensors is demonstrated by monitoring joint movements, facial expressions, and respiration. |
| first_indexed | 2024-03-11T08:11:44Z |
| format | Article |
| id | doaj.art-50574bd9182e43c7a89a42c16279612d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T08:11:44Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-50574bd9182e43c7a89a42c16279612d2023-11-16T23:05:57ZengMDPI AGSensors1424-82202023-02-01234177410.3390/s23041774Stretchable Strain Sensor with Small but Sufficient Adhesion to SkinTakaaki Nishikawa0Hisaya Yamane1Naoji Matsuhisa2Norihisa Miki3Department of Mechanical Engineering, Keio University, Kanagawa, Yokohama 223-8522, JapanDepartment of Mechanical Engineering, Keio University, Kanagawa, Yokohama 223-8522, JapanDepartment of Electronics and Electrical Engineering, Keio University, Kanagawa, Yokohama 223-8522, JapanDepartment of Mechanical Engineering, Keio University, Kanagawa, Yokohama 223-8522, JapanStretchable strain sensors that use a liquid metal (eutectic gallium–indium alloy; E-GaIn) and flexible silicone rubber (Ecoflex) as the support and adhesive layers, respectively, are demonstrated. The flexibility of Ecoflex and the deformability of E-GaIn enable the sensors to be stretched by 100%. Ecoflex gel has sufficiently large adhesion force to skin, even though the adhesion force is smaller than that for commercially available adhesives. This enables the sensor to be used for non-invasive monitoring of human motion. The mechanical and electrical properties of the sensor are experimentally evaluated. The effectiveness of the proposed sensors is demonstrated by monitoring joint movements, facial expressions, and respiration.https://www.mdpi.com/1424-8220/23/4/1774flexible sensorstrain sensoradhesionhuman motionsilicone rubberliquid metal |
| spellingShingle | Takaaki Nishikawa Hisaya Yamane Naoji Matsuhisa Norihisa Miki Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin Sensors flexible sensor strain sensor adhesion human motion silicone rubber liquid metal |
| title | Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin |
| title_full | Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin |
| title_fullStr | Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin |
| title_full_unstemmed | Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin |
| title_short | Stretchable Strain Sensor with Small but Sufficient Adhesion to Skin |
| title_sort | stretchable strain sensor with small but sufficient adhesion to skin |
| topic | flexible sensor strain sensor adhesion human motion silicone rubber liquid metal |
| url | https://www.mdpi.com/1424-8220/23/4/1774 |
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