Thermal-needle-triggered cascade reduction of graphene oxide for controllable moving trajectory into conductive patterns
Thermal-needle-triggered cascade reduction of graphene oxide for controllable moving trajectory into conductive patterns
复制标题
热针触发级联还原氧化石墨烯，以实现导电图案中可控移动轨迹
DOI：
10.1039/d2cc05052h
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
ab Jianming
中科院分区：
文献类型：
--
作者：
Xiaofang Zhang;ab Lu Zong;c Mingjie Li;ab Jianming
我们表明石墨烯图案化可以用热针触发，并通过将某些材料预渗透到氧化石墨烯（GO）衬底中来控制。在适当的GO的O/C摩尔比（≥0.4）和物理密度（≥3 mg cm−3）的情况下，GO膜/气凝胶的级联还原反应由温度低至195 °C的针触发，并以高达10320 mm s−1的高速率传播。热还原机理也为在GO基片上进行激光写入而不发生级联还原提供了线索。更重要的是，这项研究提供了一种有前途的方法，通过用热针触发和控制亲水材料的预渗透来进行石墨烯图案化。
We showed graphene patterning could be triggered with a thermal needle and controlled through pre-infiltrating certain materials into graphene oxide (GO) substrates. With an appropriate O/C molar ratio of GO (≥0.4) and physical density (≥3 mg cm−3), a cascade reduction reaction of GO films/aerogels was triggered by a needle with a temperature as low as 195 °C and propagated at a high rate of up to ∼320 mm s−1. The thermal reduction mechanism could also provide a clue for laser writing on GO substrates without the occurrence of cascade reduction for high precision. More importantly, this study offers a promising approach for graphene patterning by triggering with a hot needle and controlling with pre-infiltration of hydrophilic materials.