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. 2023 Aug 7;7:e47325. doi: 10.2196/47325

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©Hyunsoo Kim, Seong Jin Jang, Hee Dong Lee, Jae Hoon Ko, Jee Young Lim. Originally published in JMIR Formative Research (https://formative.jmir.org), 07.08.2023.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Formative Research, is properly cited. The complete bibliographic information, a link to the original publication on https://formative.jmir.org, as well as this copyright and license information must be included.

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Electric characterization for piezo-resistive textile. (A) Cross-sectional images of the smart floor mat (SFM) and scanning electron microscope image of the piezo-resistive textile, which is coated with multiwalled carbon nanotubes (MWCNTs). (B) Resistance change based on load. The load is increased from 0 to 0.12 kg/cm2. (C) The change in resistance is measured repeatedly at a specific weight (0.05 kg/cm2). (D) Force versus voltageout curves based on load resistance (a voltage of +5V was used). (E) Hysteresis curve of the piezo-resistive textile. (F) Durability for repeated pressure 50,000 times.