Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters
Abstract Thickness-controlled transparent conducting films (TCFs) were fabricated by transfer printing a 100 nm thick Cu micromesh structure onto poly(vinyl alcohol) (PVA) substrates of different thicknesses (~ 50, ~ 80, and ~ 120 μm) to develop a lightweight transparent wearable heater with short r...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-10-01
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| Series: | Micro and Nano Systems Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40486-021-00132-5 |
| _version_ | 1819003840066748416 |
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| author | Han-Jung Kim Yoonkap Kim |
| author_facet | Han-Jung Kim Yoonkap Kim |
| author_sort | Han-Jung Kim |
| collection | DOAJ |
| description | Abstract Thickness-controlled transparent conducting films (TCFs) were fabricated by transfer printing a 100 nm thick Cu micromesh structure onto poly(vinyl alcohol) (PVA) substrates of different thicknesses (~ 50, ~ 80, and ~ 120 μm) to develop a lightweight transparent wearable heater with short response time. The Cu mesh-based TCF fabricated on a ~ 50 µm thick PVA substrate exhibited excellent optical and electrical properties with a light transmittance of 86.7% at 550 nm, sheet resistance of ~ 10.8 Ω/sq, and figure-of-merit of approximately 236, which are comparable to commercial indium tin oxide film-based transparent conductors. The remarkable flexibility of the Cu mesh-based TCF was demonstrated through cyclic mechanical bending tests. In addition, the Cu mesh-based TCF with ~ 50 μm thick PVA substrate demonstrated a fast Joule heating performance with a thermal response time of ~ 18.0 s and a ramping rate of ~ 3.0 ℃/s under a driving voltage of 2.5 V. Lastly, the reliable response and recovery characteristics of the Cu mesh/PVA film-based transparent heater were confirmed through the cyclic power test. We believe that the results of this study is useful in the development of flexible transparent heaters, including lightweight deicing/defogging films, wearable sensors/actuators, and medical thermotherapy pads. |
| first_indexed | 2024-12-20T23:27:23Z |
| format | Article |
| id | doaj.art-c9e7cc8e95e54fdc9b3fd62b356de75b |
| institution | Directory Open Access Journal |
| issn | 2213-9621 |
| language | English |
| last_indexed | 2024-12-20T23:27:23Z |
| publishDate | 2021-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Micro and Nano Systems Letters |
| spelling | doaj.art-c9e7cc8e95e54fdc9b3fd62b356de75b2022-12-21T19:23:22ZengSpringerOpenMicro and Nano Systems Letters2213-96212021-10-019111010.1186/s40486-021-00132-5Copper micromesh-based lightweight transparent conductor with short response time for wearable heatersHan-Jung Kim0Yoonkap Kim1Convergence Materials Research Center, Gumi Electronics and Information Technology Research Institute (GERI)Convergence Materials Research Center, Gumi Electronics and Information Technology Research Institute (GERI)Abstract Thickness-controlled transparent conducting films (TCFs) were fabricated by transfer printing a 100 nm thick Cu micromesh structure onto poly(vinyl alcohol) (PVA) substrates of different thicknesses (~ 50, ~ 80, and ~ 120 μm) to develop a lightweight transparent wearable heater with short response time. The Cu mesh-based TCF fabricated on a ~ 50 µm thick PVA substrate exhibited excellent optical and electrical properties with a light transmittance of 86.7% at 550 nm, sheet resistance of ~ 10.8 Ω/sq, and figure-of-merit of approximately 236, which are comparable to commercial indium tin oxide film-based transparent conductors. The remarkable flexibility of the Cu mesh-based TCF was demonstrated through cyclic mechanical bending tests. In addition, the Cu mesh-based TCF with ~ 50 μm thick PVA substrate demonstrated a fast Joule heating performance with a thermal response time of ~ 18.0 s and a ramping rate of ~ 3.0 ℃/s under a driving voltage of 2.5 V. Lastly, the reliable response and recovery characteristics of the Cu mesh/PVA film-based transparent heater were confirmed through the cyclic power test. We believe that the results of this study is useful in the development of flexible transparent heaters, including lightweight deicing/defogging films, wearable sensors/actuators, and medical thermotherapy pads.https://doi.org/10.1186/s40486-021-00132-5Wearable transparent heaterTransparent conductorMetal meshThermal response timeTransfer printing |
| spellingShingle | Han-Jung Kim Yoonkap Kim Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters Micro and Nano Systems Letters Wearable transparent heater Transparent conductor Metal mesh Thermal response time Transfer printing |
| title | Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters |
| title_full | Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters |
| title_fullStr | Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters |
| title_full_unstemmed | Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters |
| title_short | Copper micromesh-based lightweight transparent conductor with short response time for wearable heaters |
| title_sort | copper micromesh based lightweight transparent conductor with short response time for wearable heaters |
| topic | Wearable transparent heater Transparent conductor Metal mesh Thermal response time Transfer printing |
| url | https://doi.org/10.1186/s40486-021-00132-5 |
| work_keys_str_mv | AT hanjungkim coppermicromeshbasedlightweighttransparentconductorwithshortresponsetimeforwearableheaters AT yoonkapkim coppermicromeshbasedlightweighttransparentconductorwithshortresponsetimeforwearableheaters |