Kirigami-structured flexible heat flux sensor driven by the anomalous Nernst effect
Abstract This letter proposes and demonstrates a flexible architecture for an anomalous-Nernst-effect-based heat flux sensor inspired by kirigami, a traditional Japanese paper-cutting art. A prototype device comprises an amorphous Sm 19 Co 81 film and Ta/Au electrode on a flexible substrate pre-patterned with a periodic-cutting kirigami structure. The estimated heat flux sensitivity of the kirigami-structured sensor was comparable to that of a conventional sensor without a kirigami structure and remained unchanged even when it was stretched by 10%. Our approach opens a pathway toward versatile and mechanically compliant heat flux sensing that is applicable to various surfaces.
Authors
- Fuyuki Ando (ORCID: https://orcid.org/0009-0003-7789-8170)
- Kota Hasegawa (ORCID: https://orcid.org/0009-0008-3508-1740)
- Ken‐ichi Uchida (ORCID: https://orcid.org/0000-0001-7680-3051)
- Weinan Zhou (ORCID: https://orcid.org/0000-0003-2946-9913)
- Takamasa Hirai (ORCID: https://orcid.org/0000-0002-5577-8018)
- Shunsuke Mori (ORCID: https://orcid.org/0000-0002-1193-4322)
- Rajkumar Modak (ORCID: https://orcid.org/0000-0001-7939-3289)
- Shusaku Saito
- Yuya SAKURABA
Institutions
- National Institute for Materials Science (JP)
- Resonac (Japan)
- The University of Tokyo (JP)
Publication Details
- Journal
- Applied Physics Express
- Published
- 2026-04-21
- DOI
- https://doi.org/10.35848/1882-0786/ae62c7
- Primary Topic
- Advanced Sensor and Energy Harvesting Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Japan Society for the Promotion of Science
- Exploratory Research for Advanced Technology