Metal oxide films are essential in most electronic devices, yet they are typically deposited at elevated temperatures by using slow, vacuum-based processes. We printed native oxide films over large areas at ambient conditions by moving a molten metal meniscus across a target substrate. The oxide gently separates from the metal through fluid instabilities that occur in the meniscus, leading to uniform films free of liquid residue. The printed oxide has a metallic interlayer that renders the films highly conductive. The metallic character of the printed films promotes wetting of trace amounts of evaporated gold that would otherwise form disconnected islands on conventional oxide surfaces. The resulting ultrathin (<10 nanometers) conductors can be patterned into flexible circuits that are transparent, mechanically robust, and electrically stable, even at elevated temperatures.

中文翻译：

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用于超薄透明柔性电路板的自然氧化物的环境印刷


金属氧化物薄膜在大多数电子设备中至关重要，但它们通常是通过使用缓慢的真空工艺在高温下沉积的。我们通过在目标基板上移动熔融金属弯液面，在环境条件下大面积印刷原生氧化膜。通过弯液面中发生的流体不稳定性，氧化物轻轻地与金属分离，从而形成没有液体残留物的均匀薄膜。印刷的氧化物具有金属夹层，使薄膜具有高导电性。印刷薄膜的金属特性促进了微量蒸发金的润湿，否则这些金会在传统氧化物表面上形成不连贯的岛。由此产生的超薄（<10纳米）导体可以被图案化成透明、机械坚固且电气稳定的柔性电路，即使在高温下也是如此。