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Digital laser printing of metal/metal-oxide nano-composites with tunable electrical properties

机译:具有可调电特性的金属/金属氧化物纳米复合材料的数字激光印刷

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摘要

We study the electrical properties of aluminum structures printed by the laser forward transfer of molten, femtoliter droplets in air. The resulting printed material is an aluminum/aluminum-oxide nano-composite. By controlling the printing conditions, and thereby the droplet volume, its jetting velocity and duration, it is possible to tune the electrical resistivity to a large extent. The material resistivity depends on the degree of oxidation which takes place during jetting and on the formation of electrical contact points as molten droplets impact the substrate. Evidence for these processes is provided by FIB cross sections of printed structures.
机译:我们研究了铝结构的电学特性,该结构是通过激光将熔融的,飞升的液滴向前转移到空气中而印刷的。所得的印刷材料是铝/氧化铝纳米复合材料。通过控制打印条件,从而控制液滴的体积,其喷射速度和持续时间,可以在很大程度上调节电阻率。材料电阻率取决于在喷射过程中发生的氧化程度,并取决于在熔融液滴撞击基材时电接触点的形成。这些过程的证据由印刷结构的FIB横截面提供。

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