材料科学
印刷电子产品
柔性电子器件
薄板电阻
导电体
光电子学
基质(水族馆)
聚对苯二甲酸乙二醇酯
弯曲半径
丝网印刷
可穿戴技术
数码产品
墨水池
复合材料
可穿戴计算机
电气工程
弯曲
图层(电子)
计算机科学
嵌入式系统
工程类
地质学
海洋学
作者
Pan Zeng,Bin Tian,Qingyong Tian,Weijing Yao,Mengxiao Li,Huanjun Wang,Feng Yu,Li Liu,Wei Wu
标识
DOI:10.1002/admt.201800453
摘要
Abstract Achieving all‐printed, low‐cost, and large area electronic devices poses challenging requirements in employing printing technologies and conductive materials for flexible and wearable heaters. In this work, fully printed, scalable, and patterned flexible heaters based on Ag fractal dendrites (FDs) are fabricated through straightforward screen printing technology. The Ag FDs possess low sheet resistance with ≈0.83 Ω sq −1 when sintered at low temperature of 60 °C. The Ag FDs are directly printed on thin polyethylene terephthalate substrate to manufacture flexible heaters, exhibiting excellent heating performance with the saturation temperature up to ≈135 °C and rapid response time within 35 s under 4 V DC voltage. In addition, the Ag FDs heaters present lower power consumption (≈209.67 °C cm 2 W −1 ), which is significantly better than traditional indium tin oxides (ITO) heaters (≈88 °C cm 2 W −1 ). The sheet resistance of the devices remains stable after 2000 bending cycles with a radius of 10 mm, indicating that the outstanding mechanize stability of the heaters. Moreover, a large area (12 cm × 5 cm) heater with designable pattern is developed and attached to human body, indicating a bright future in next‐generation fully printed and wearable heating electronics application.
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