Self-enhancing sono-inks enable deep-penetration acoustic volumetric printing.
Self-enhancing sono-inks enable deep-penetration acoustic volumetric printing.
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自我增强的声波墨水可实现深度穿透的声学体积打印。
DOI：
10.1126/science.adi1563
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Zhang,YuShrike
中科院分区：
文献类型：
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作者：
Kuang,Xiao;Rong,Qiangzhou;Belal,Saud;Vu,Tri;LópezLópez,AliceM;Wang,Nanchao;Arıcan,MehmetOnur;Garciamendez-Mijares,CarlosEzio;Chen,Maomao;Yao,Junjie;Zhang,YuShrike
体积打印是一种新兴的增材制造技术，通过放弃逐步更换墨水的步骤，可以提高打印速度和表面质量。现有的体积印刷技术几乎完全依靠光能来触发透明油墨中的光聚合，这限制了材料的选择和构建尺寸。我们报道了一种用于深穿透声学体积印刷（DAVP）的自增强超声墨水（或sono-ink）设计和相应的聚焦超声书写技术。我们采用实验和声学建模的方法来研究频率和扫描速率对声学打印行为的影响。DAVP实现了低声流、快速声温聚合和大打印深度的关键特性，使打印体积水凝胶和纳米复合材料具有各种形状，而不考虑其光学性质。DAVP还允许在生物组织中进行厘米深度的打印，为微创医学铺平了道路。
Volumetric printing, an emerging additive manufacturing technique, builds objects with enhanced printing speed and surface quality by forgoing the stepwise ink-renewal step. Existing volumetric printing techniques almost exclusively rely on light energy to trigger photopolymerization in transparent inks, limiting material choices and build sizes. We report a self-enhancing sonicated ink (or sono-ink) design and corresponding focused-ultrasound writing technique for deep-penetration acoustic volumetric printing (DAVP). We used experiments and acoustic modeling to study the frequency and scanning rate–dependent acoustic printing behaviors. DAVP achieves the key features of low acoustic streaming, rapid sonothermal polymerization, and large printing depth, enabling the printing of volumetric hydrogels and nanocomposites with various shapes regardless of their optical properties. DAVP also allows printing at centimeter depths through biological tissues, paving the way toward minimally invasive medicine.