Printing continuous metal structures via polymer-assisted photochemical deposition
Printing continuous metal structures via polymer-assisted photochemical deposition
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DOI：
10.1016/j.mattod.2020.03.001
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发表时间：
2020-07
期刊：
影响因子：
24.2
通讯作者：
Zhi Zhao;Jing Bai;Yu Yao;Chao Wang
中科院分区：
文献类型：
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作者：
Zhi Zhao;Jing Bai;Yu Yao;Chao Wang
通过增材制造（AM）制造复杂金属结构在能源、医疗和航空航天工业中有着广泛的应用。目前的增材制造方法通常受到加工温度高、薄膜沉积不连续和/或产品电导率和反射率低的限制。我们提出了一种基于聚合物辅助光化学沉积（PPD）的多功能室温金属打印技术。二维（2D）和三维（3D）打印的银，金和铂结构的特征尺寸小至5微米演示了各种衬底，包括硅，玻璃，聚合物和生物相容性水凝胶。ppd打印的金属薄膜即使在超低厚度（< 10 nm）下也连续光滑（粗糙度< 3 nm），并且具有高导电性（~ 3× 10 5 S cm−1）和反射率，可与真空沉积的金属薄膜相媲美。先进增材制造技术的突破为光学、电子和机器人领域的低成本、快速和分布式制造带来了巨大的希望。
Patterning complex metallic structures via additive manufacturing (AM) has broad applications in energy, medical and aerospace industries. Current AM methods are often limited by high processing temperature, discontinuous film deposition and/or low product conductivity and reflectivity. We present a versatile room-temperature metal printing technique based on polymer-assisted photochemical deposition (PPD). Two-dimensional (2D) and three-dimensional (3D) printing of silver, gold and platinum structures with feature sizes as small as 5 µm are demonstrated on various substrates, including silicon, glass, polymers and biocompatible hydrogels. The PPD-printed metal films are continuous and smooth (roughness< 3 nm) even at ultra-low thicknesses (< 10 nm), and highly conductive (∼ 3× 10 5 S cm− 1) and reflective comparable to that of vacuum deposited counterparts. This breakthrough in advanced AM technique holds great promise for low-cost, fast and distributed manufacturing in optics, electronics and robotics.