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Micro-CT-Based Experimental Study on the 3D Structure-Electrical Conductivity Relationship of Metal-Coated Woven
Magdalena Tokarska1, Adam K Puszkarz2, Marcin Makówka3
1Faculty of Textiles and Design, Institute of Architecture of Textiles, Lodz University of Technology, 116 Zeromskiego St., 90-543 Lodz, Poland.
Materials (Basel, Switzerland)
|August 13, 2026
Summary
Metal-coated woven fabrics exhibit strong structure-property relationships. Thicker coatings increase electrical anisotropy, while larger pores correlate with higher resistance and fabric irregularity.
Area of Science:
- Materials Science
- Textile Engineering
- Electrical Engineering
Background:
- Metal-coated woven fabrics are advanced materials with potential applications in flexible electronics and electromagnetic shielding.
- Understanding the relationship between their intricate structures and electrical properties is crucial for optimizing performance.
Purpose of the Study:
- To investigate the correlation between the structural characteristics of metal-coated woven fabrics and their electrical resistance.
- To determine how coating thickness, pore size, and dimensional irregularity influence electrical anisotropy.
Main Methods:
- X-ray micro-computed tomography (micro-CT) for detailed structural characterization (coating, yarn, pore structure).
- Four-electrode electrical resistance measurements (van der Pauw method adaptation) in multiple directions.
- Statistical correlation analysis to link structural parameters with electrical properties.
Main Results:
- Strong correlations were found between fabric structure and electrical properties.
- Thicker metal coatings were associated with increased electrical anisotropy (correlation coefficient = 0.772).
- Increased pore sizes (mean and median) correlated with higher resistance values (0.839–0.941) and dimensional irregularity (0.958), leading to greater electrical anisotropy.
Conclusions:
- Structural parameters significantly influence the electrical behavior of metal-coated woven fabrics.
- Coating thickness and pore size are key factors determining electrical resistance and anisotropy.
- Micro-CT and electrical measurements provide a comprehensive approach to characterizing these functional textiles.
