Trovato Valentina, Konar Rajashree, Teblum Eti, Lazzaroni Paolo, Re Valerio, Rosace Giuseppe, Nessim Gilbert Daniel
Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, 24044 Dalmine, Italy.
Department of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel.
Polymers (Basel). 2025 Mar 12;17(6):752. doi: 10.3390/polym17060752.
Electroconductive textiles (e-Textiles) are vital in developing wearable sensors that preserve the comfort and characteristics of textiles. Among two-dimensional (2D) transition metal dichalcogenides (TMDs), considered a promising option for sensor applications, tungsten di-selenide (WSe) homostructures have been used as humidity- and temperature-sensing materials for developing e-textiles, as mentioned in a first-of-its-kind report. Exfoliated chemical vapor deposition (CVD)-grown 2H-WSe nanosheets were dispersed in hydroalcoholic solutions using an amino-functionalized silane to improve dispersion. Acrylic thickener was added to create 2H-WSe-based pastes, which were applied onto cotton using the knife-over-roll technique to obtain thin, flexible electroconductive coatings on textiles. Various characterization techniques confirmed the even distribution of 2D-WSe-based coatings on fabrics and the maintenance of textile comfort and wearability. The conductivity of coated fabrics was measured at room temperature and ranged between 2.9 × 10 and 1.6 × 10 Ω sq. The WSe-based textile sensors functioned well as resistance humidity detectors within 30-90% relative humidity (RH), revealing good repeatability and sensitivity after multiple exposure cycles. To a lesser extent, WSe-based textile sensors act as temperature detectors within 20-60 °C with limited repeatability. The 2D-based textiles exhibited a quadratic dependence of resistance on temperature and a characteristic thermal hysteresis. This proposed strategy marks a significant milestone in developing scalable and flexible 2D TMD-based detectors with great potential for wearable sensing devices.
导电纺织品（电子纺织品）对于开发能够保持纺织品舒适性和特性的可穿戴传感器至关重要。在二维（2D）过渡金属二卤化物（TMDs）中，被认为是传感器应用的一个有前途的选择，二硒化钨（WSe）同质结构已被用作开发电子纺织品的湿度和温度传感材料，正如一份开创性报告中所提到的。通过使用氨基功能化硅烷将化学气相沉积（CVD）生长的剥离2H-WSe纳米片分散在水醇溶液中，以改善分散性。添加丙烯酸增稠剂以制备基于2H-WSe的糊剂，然后使用辊涂刀技术将其涂覆在棉花上，从而在纺织品上获得薄而柔韧的导电涂层。各种表征技术证实了基于2D-WSe的涂层在织物上的均匀分布以及纺织品舒适性和可穿戴性的保持。在室温下测量了涂层织物的电导率，范围在2.9×10至1.6×10Ω/sq之间。基于WSe的纺织品传感器在30-90%相对湿度（RH）范围内作为电阻式湿度探测器运行良好，在多次暴露循环后显示出良好的重复性和灵敏度。在较小程度上，基于WSe的纺织品传感器在20-60°C范围内作为温度探测器运行，重复性有限。基于2D的纺织品表现出电阻对温度的二次依赖性和特征性热滞现象。这一提出的策略标志着在开发具有可扩展性和灵活性的基于2D TMD的探测器方面取得了重要里程碑，这种探测器在可穿戴传感设备方面具有巨大潜力。
