TY - JOUR
T1 - Performance Comparison of Fast, Transparent, and Biotic Heaters Based on Leaf Skeletons
AU - Sharma, Vipul
AU - Jääskö, Katriina
AU - Yiannacou, Kyriacos
AU - Koivikko, Anastasia
AU - Lampinen, Vilma
AU - Sariola, Veikko
N1 - Funding Information:
This work was supported by the Academy of Finland (grants: #331368, #299087, #292477, and #326461) and KONE foundation. All authors are grateful for the support from the Tampere Microscopy Center for the characterization of the surfaces.
Publisher Copyright:
© 2022 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH
PY - 2022
Y1 - 2022
N2 - Bioinspired, highly flexible, fast, and biodegradable heaters are fabricated based on Ag nanowires and leaf skeletons of different plant species. The leaf skeletons act as transparent substrates with a high surface-area-to-volume ratio and allow a uniform dispersion of the Ag nanowires through the surface. Ag nanowires adhered to the leaf skeletons display very good transmittance (up to ≈87%) and mechanical (flexibility) properties (curvature values >800 m−1) without any post-treatment. The flexible leaf skeleton-based heaters reach high temperatures very quickly, with very low voltages (<4 V). The performance of the bioinspired heater surface is dependent on the types of fractal structures at the microscale. The morphology of the leaf skeletons is studied in detail and is corelated with the transmittance, flexibility, and sheet resistances. Bioinspired heater surfaces based on different leaf skeletons are compared based on their multiscale morphology, and the different heating performance parameters are screened. Based on the study conducted, insights on the best-performing biotic design for the fabrication of the heaters that are useful in practical wearable, medical, or industrial heating applications are provided.
AB - Bioinspired, highly flexible, fast, and biodegradable heaters are fabricated based on Ag nanowires and leaf skeletons of different plant species. The leaf skeletons act as transparent substrates with a high surface-area-to-volume ratio and allow a uniform dispersion of the Ag nanowires through the surface. Ag nanowires adhered to the leaf skeletons display very good transmittance (up to ≈87%) and mechanical (flexibility) properties (curvature values >800 m−1) without any post-treatment. The flexible leaf skeleton-based heaters reach high temperatures very quickly, with very low voltages (<4 V). The performance of the bioinspired heater surface is dependent on the types of fractal structures at the microscale. The morphology of the leaf skeletons is studied in detail and is corelated with the transmittance, flexibility, and sheet resistances. Bioinspired heater surfaces based on different leaf skeletons are compared based on their multiscale morphology, and the different heating performance parameters are screened. Based on the study conducted, insights on the best-performing biotic design for the fabrication of the heaters that are useful in practical wearable, medical, or industrial heating applications are provided.
U2 - 10.1002/adem.202101625
DO - 10.1002/adem.202101625
M3 - Article
AN - SCOPUS:85123463207
SN - 1438-1656
VL - 24
JO - Advanced Engineering Materials
JF - Advanced Engineering Materials
IS - 9
M1 - 2101625
ER -