| Title |
Modulation of Electrical and Thermal Properties of Metal Nanowire-Based Heatable Textiles:
Evaluation of Substrate Compatibility and Dip-and-Dry Process Applicability |
| Authors |
구준모(Junmo Koo) ; 이찬경(Chankyoung Lee) ; 이민재(Minjae Lee) ; 김용찬(Yongchan Kim) ; 김민재(Minjae Kim) ; 전우진(Woojin Jeon) ; 박재우(Jaewoo Park) ; 최두호(Dooho Choi) |
| DOI |
https://doi.org/10.3365/KJMM.2025.63.11.905 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Metal nanowires; Heatable textiles; Dipping and drying process; Joule heating |
| Abstract |
This study developed a method of fabricating heatable textiles using silver (Ag) and copper (Cu)
nanowires (NWs) and various textile substrates (knit silk, rayon, silk scarf, poplin and polyester) using a
repeated dip-and-dry process. The effects of substrate type, nanowire material, and processing conditions on
electrical and thermal performance were systematically investigated. Among the five tested fabrics, poplin?
characterized by its plain weave structure and high fabric density?exhibited the lowest sheet resistance and
was selected for detailed thermal analysis. Cu nanowires showed rapid degradation due to surface oxidation,
resulting in a complete loss of conductivity within 18 seconds of ambient exposure. In contrast, Ag nanowires
formed uniform conductive networks with excellent oxidation resistance, enabling stable and reliable Joule
heating. The AgNW-coated poplin demonstrated a rapid thermal response, reaching 90% of the target
temperature within 12 seconds under 5?V, with less than 0.5% deviation during steady-state operation. The
heating behavior remained stable over repeated on/off cycles and during 10,000 minutes of continuous
operation, with only minor decreases of 3.5% in temperature and 4.0% in current. Furthermore, consistent
heating performance was maintained under mechanical deformation such as twisting and folding. In this
study, AgNW-coated poplin demonstrated the most stable Joule heating performance among the tested textile
substrates, which is attributed to the intrinsic oxidation resistance of Ag and the plain weave structure of
the poplin substrate. |