Aerosol jet printing is a popular digital additive manufacturing method for flexible and hybrid electronics, but it lacks sophisticated real‐time process control schemes that would enable more widespread adoption in manufacturing environments. Here, an optical measurement system is introduced to track the aerosol density upstream of the printhead. The measured optical extinction, combined with the aerosol flow rate, is directly related to deposition rate and accurately predicts functional materials properties such as the electrical resistance of printed graphene films. This real‐time system offers a compelling solution for process drift and batch‐to‐batch variability, rendering it a valuable tool for both real‐time control of aerosol jet printing and fundamental studies of the underlying process science.

中文翻译：

---

实时光学过程监控，用于气溶胶喷射印刷功能材料的结构和性能控制

气溶胶喷射印刷是一种流行的用于柔性和混合电子产品的数字增材制造方法，但是它缺少复杂的实时过程控制方案，因此无法在制造环境中得到更广泛的采用。这里，引入了光学测量系统以跟踪打印头上游的气溶胶密度。测得的光学消光与气溶胶的流速相结合，与沉积速率直接相关，并且可以准确地预测功能材料的性能，例如印刷石墨烯薄膜的电阻。该实时系统为过程漂移和批次间差异提供了引人注目的解决方案，使其成为实时控制气溶胶喷射印刷和基础过程科学基础研究的宝贵工具。