Rapid Far-Infrared Radiation and Physiotherapeutic Effects of Carbon Nanotube Flexible Thin-Film Heaters.
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| Title: | Rapid Far-Infrared Radiation and Physiotherapeutic Effects of Carbon Nanotube Flexible Thin-Film Heaters. |
|---|---|
| Authors: | Wang, Shi-Yao1 (AUTHOR), Wang, Yue-Xin1,2 (AUTHOR), Li, Wen-Zheng1,3 (AUTHOR), Li, Meng-Yao1 (AUTHOR), Gao, Jia-Yi1,2 (AUTHOR), Liu, Pu1,3 (AUTHOR), Zhou, Jing1 (AUTHOR), Huai, Xuguo1,2 (AUTHOR) huaixuguo@tiangong.edu.cn, Geng, Hong-Zhang1,3 (AUTHOR) genghz@tiangong.edu.cn |
| Source: | Nanomaterials (2079-4991). May2026, Vol. 16 Issue 9, p539. 13p. |
| Subjects: | Carbon nanotubes, Thermotherapy, Physical therapy, Thermoelectricity, Wearable technology, Infrared radiation |
| Abstract: | Carbon nanotube (CNT) materials exhibit ultrahigh electrical and thermal conductivity. Upon electrical excitation, CNT-based transparent conductive films (TCFs) can emit far-infrared radiation (FIR) and provide certain physiotherapeutic efficacy, making them ideal candidates for thermotherapy applications. This work systematically tests and analyzes the fundamental physical properties and physiotherapeutic performance of CNT flexible thin-film heaters (TFHs) for potential use in health physiotherapy. Two types of TFHs with different electrode connection modes were fabricated via the prepared TCFs. Experimental characterizations were conducted on their response time, electrothermal performance, and heat transfer characteristics. The results showed that the temperature rise per unit input power for TFH1 was 16.71 °C/W, while that of TFH2 was 4.29 °C/W at the same voltage of 10 V. In addition, the variation trends of maximum temperature with power density were highly consistent for the two films. This demonstrates that TFHs fabricated using the same TCFs exhibit excellent and high electrothermal conversion efficiency as well as outstanding comprehensive electrothermal performance. In addition, smaller L/W ratio leads to lower resistance of TFHs, resulting in a stronger thermal effect under identical applied voltage. After the temperature stabilized, the surface temperature of the TFHs decreased by approximately 5 °C when attached to the human arm, confirming that the heat generated by the TFHs under electrical excitation could be effectively absorbed by the human body. The TFHs emitted rapid FIR upon electrification, and the peak wavelength ranged from 8 to 12 µm, which fell within the range of 6–14 µm that was easily absorbable by the human body. The heat can be rapidly absorbed by the skin and distributed throughout the body via blood circulation, yielding favorable physiotherapeutic efficacy. This study provides key physical parameters for the application of TFHs in wearable medical devices and physiotherapy equipment. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 193717472 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Rapid Far-Infrared Radiation and Physiotherapeutic Effects of Carbon Nanotube Flexible Thin-Film Heaters. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Shi-Yao%22">Wang, Shi-Yao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yue-Xin%22">Wang, Yue-Xin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Wen-Zheng%22">Li, Wen-Zheng</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Meng-Yao%22">Li, Meng-Yao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Jia-Yi%22">Gao, Jia-Yi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Pu%22">Liu, Pu</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Jing%22">Zhou, Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huai%2C+Xuguo%22">Huai, Xuguo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> huaixuguo@tiangong.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Geng%2C+Hong-Zhang%22">Geng, Hong-Zhang</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> genghz@tiangong.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. May2026, Vol. 16 Issue 9, p539. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Carbon+nanotubes%22">Carbon nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Thermotherapy%22">Thermotherapy</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+therapy%22">Physical therapy</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoelectricity%22">Thermoelectricity</searchLink><br /><searchLink fieldCode="DE" term="%22Wearable+technology%22">Wearable technology</searchLink><br /><searchLink fieldCode="DE" term="%22Infrared+radiation%22">Infrared radiation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Carbon nanotube (CNT) materials exhibit ultrahigh electrical and thermal conductivity. Upon electrical excitation, CNT-based transparent conductive films (TCFs) can emit far-infrared radiation (FIR) and provide certain physiotherapeutic efficacy, making them ideal candidates for thermotherapy applications. This work systematically tests and analyzes the fundamental physical properties and physiotherapeutic performance of CNT flexible thin-film heaters (TFHs) for potential use in health physiotherapy. Two types of TFHs with different electrode connection modes were fabricated via the prepared TCFs. Experimental characterizations were conducted on their response time, electrothermal performance, and heat transfer characteristics. The results showed that the temperature rise per unit input power for TFH1 was 16.71 °C/W, while that of TFH2 was 4.29 °C/W at the same voltage of 10 V. In addition, the variation trends of maximum temperature with power density were highly consistent for the two films. This demonstrates that TFHs fabricated using the same TCFs exhibit excellent and high electrothermal conversion efficiency as well as outstanding comprehensive electrothermal performance. In addition, smaller L/W ratio leads to lower resistance of TFHs, resulting in a stronger thermal effect under identical applied voltage. After the temperature stabilized, the surface temperature of the TFHs decreased by approximately 5 °C when attached to the human arm, confirming that the heat generated by the TFHs under electrical excitation could be effectively absorbed by the human body. The TFHs emitted rapid FIR upon electrification, and the peak wavelength ranged from 8 to 12 µm, which fell within the range of 6–14 µm that was easily absorbable by the human body. The heat can be rapidly absorbed by the skin and distributed throughout the body via blood circulation, yielding favorable physiotherapeutic efficacy. This study provides key physical parameters for the application of TFHs in wearable medical devices and physiotherapy equipment. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=193717472 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano16090539 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 539 Subjects: – SubjectFull: Carbon nanotubes Type: general – SubjectFull: Thermotherapy Type: general – SubjectFull: Physical therapy Type: general – SubjectFull: Thermoelectricity Type: general – SubjectFull: Wearable technology Type: general – SubjectFull: Infrared radiation Type: general Titles: – TitleFull: Rapid Far-Infrared Radiation and Physiotherapeutic Effects of Carbon Nanotube Flexible Thin-Film Heaters. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Shi-Yao – PersonEntity: Name: NameFull: Wang, Yue-Xin – PersonEntity: Name: NameFull: Li, Wen-Zheng – PersonEntity: Name: NameFull: Li, Meng-Yao – PersonEntity: Name: NameFull: Gao, Jia-Yi – PersonEntity: Name: NameFull: Liu, Pu – PersonEntity: Name: NameFull: Zhou, Jing – PersonEntity: Name: NameFull: Huai, Xuguo – PersonEntity: Name: NameFull: Geng, Hong-Zhang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 16 – Type: issue Value: 9 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
| ResultId | 1 |
