Multimaterial fibers engineered to integrate glasses, metals, semiconductors, and composites found applications in ubiquitous sensing, biomedicine, and robotics. The longitudinal symmetry typical of fibers, however, limits the density of functional interfaces with fiber-based devices. Here, thermal drawing and photolithography are combined to produce a scalable method for deterministically breaking axial symmetry within multimaterial fibers. Our approach harnesses a two-step polymerization in thiol–epoxy and thiol–ene photopolymer networks to create a photoresist compatible with high-throughput thermal drawing in atmospheric conditions. This, in turn, delivers meters of fiber that can be patterned along the length increasing the density of functional points. This approach may advance applications of fiber-based devices in distributed sensors, large area optoelectronic devices, and smart textiles.

中文翻译：

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通过光纤内光刻技术选择性地微图案化光纤

经过工程设计以集成玻璃，金属，半导体和复合材料的多材料纤维在无处不在的传感，生物医学和机器人技术中得到了应用。但是，光纤的典型纵向对称性限制了基于光纤的设备的功能接口密度。在这里，热拉伸和光刻技术相结合，产生了一种可扩展的方法，用于确定性地破坏多材料纤维内的轴向对称性。我们的方法利用在硫醇-环氧树脂和硫醇-烯光敏聚合物网络中的两步聚合，以创建与大气条件下高通量热拉伸相容的光刻胶。反过来，这提供了可沿长度方向图案化的光纤米，从而增加了功能点的密度。这种方法可以促进基于光纤的设备在分布式传感器中的应用，