喷嘴
微流控
纳米技术
材料科学
执行机构
墨水池
数码产品
3D打印
可穿戴计算机
蛋白质丝
可穿戴技术
纳米发生器
机械工程
计算机科学
压电
电气工程
工程类
复合材料
嵌入式系统
作者
Zhang Bai,Liwen Zhang,Xinzhao Zhou,Song Zhao,Changjun Yang,Yu Zhou,Kay Chen Tan,Zehui Zhao,Huawei Chen
标识
DOI:10.1002/admt.202301150
摘要
Abstract Filaments with multi‐materials, complex structures, and sophisticated functions are of great importance to wearable electronics, flexible actuators, and sensors. Direct ink writing (DIW) is mainly adopted to fabricate functional filaments. However, finely regulating the filament's structure is difficult due to the unmovable and static extruding nozzle parts. Here, a dynamically adjustable DIW platform is presented with a movable needle in a Y‐shaped microfluidic nozzle, enabling precise subvoxel control over the structure of the inner layer to print dual‐material and multi‐structure filaments. The position, proportion, and shape of the filaments’ inner layer can be precisely manipulated by adjusting the extruding pressure and the motion of the needle's position in the microfluidic nozzle. Therefore, filaments with various complex structures can be fabricated. Via the printing platform, wavy inner structures are manufactured for stretchable conductance‐stable and triboelectric nanogenerator fibers to realize energy harvesting and self‐powered sensing. Such subvoxel‐controlled microfluidic printing significantly increases the complexity of dual‐material filaments to provide potential applications for flexible electronics.
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