柔性电子：大面积全纺织压力传感器用于检测人类移动和物理信号

摘要：the textiles sensor unit achieves high sensitivity(14.4kPa−1),low detection limit(2 Pa), fast response(~24ms), low power consumption and mechanical stability under harsh deformations.

large-area sensor arrays are successfully fabricated on one textile substrate to spatially map tactile stimuli and can be directly incorporated into a fabric garment for stylish designs without sacrifice of comfort.

introduction

recently, intensive endeavors have been devoted to developing flexible pressure-sensitive devices.

A number of “skin-like” sensors[6] (e.g., electronic skins) have been realized by utilizing capacitive,[ 7] piezoelectric,[8] resistive,[9] or triboelectric[10] effects.

These pressure sensors based on ultrathin inorganic silicion[11], pressure-sensitive rubber[12], organic semi-conductors[13], conducting polymers[7a], ionic gels[14]离子凝胶, or self-powered systems[15] have been reported with high sensitivity and excellent flexibility.

However , either the fabrication process of these devices could be laborious（复杂的）, or their flat plastic or polymer substrates such as poly(ethylene terephthalate) (PET), polyimide (PI), poly(dimethylsiloxane) (PDMS), rubber, and paper[16] are still inappropriate for smart textiles.

纺织品是柔性压力传感器设计的理想载体，尤其适用于医疗和人类活动检测目的的可穿戴电子产品，因为纺织品具有吸湿性、柔软性、透气性和对人体皮肤的舒适性.Textiles are ideal vehicles for the design of flexible pressure sensors, especially for wearable electronics with detection purposes of healthcare and human activities , since textile are hygroscopic, soft, breathable, and comfortable to human skin.[17]

Recently, resistive textile-based pressure sensors have been reported with the aid of various nanomaterials, such as fiber-shaped carbon nanotubes(CNT)[2b, 18], gaphene[19], graphene/polymer nanocomposites[20], carbonized silk fabrics[21], electrospun nanotubes[6a,22] and commom cloth coated with carbonaceous materials[7b, 16b,23]

Despite this progress, a wholetextile-
based pressure sensor is still required. In addition, large area textile-based pressure-sensor arrays able to map pressure distributions are seldom reported by far.

Here, we demonstrate a facile and novel approach for fabricating all-textile-based pressure sensors and large-area sensor arrays.

构成：

底部为相互交叉的纺织电极，顶部为CNT沉积的棉纤维。

通过激光划线屏蔽和无电沉积共形的Ni，在常见的纺织品(比如涤纶， 尼龙等)上制备交叉电极。The interdigitated conductive electrodes on common textile (polyester, nylon, etc.) were fabricated by laserscribing masking and electroless deposition of conformal Ni coatings