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首页> 外文期刊>Applied Surface Science >Controlled bridge growth of ZnO nanowires on laser-scribed graphene-based devices for NO gas detection
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Controlled bridge growth of ZnO nanowires on laser-scribed graphene-based devices for NO gas detection

机译：控制ZnO纳米线对基于激光划线石墨烯的装置的控制桥梁生长，无气体检测

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This research proposed a facile low-cost hydrothermal method to control a bridge growth of ZnO nanowires on laser-scribed graphene-based devices applied for NO gas detection. The picosecond laser processing system was used to scribe graphene/glass substrates and to form V-shaped grooves. During the growing process of ZnO nanowires, the surfactant solution of methanol was added into the growth solution to decrease surface tension of V-shaped grooves. Hence, the grown ZnO nanowires could increase their contact area from both sides of the groove edge. The experimental results showed that the V-shaped grooves of graphene/glass substrates were obtained by using optimal laser processing parameters including the pulse repetition rate of 300 kHz, scanning speed of 100 mm/s, laser fluence of 1.81 J/cm(2), and number of scribed passes of 3 times. Then, the ZnO nanowires were grown via the immersed processes of the seed layer solution for 80 min and the growth solution with surfactant solution for 8 h. Consequently, the ZnO nanowires had a lowest electrical resistance of 453 Omega. Moreover, the sensitivities of gas sensors were approximately 14.7%, 21.2%, and 40.2% when the ZnO nanowires were exposed to 50 ppm, 150 ppm, and 300 ppm NO gas, respectively.
机译：该研究提出了一种容易的低成本水热法，用于控制ZnO纳米线在施加的基于激光划线石墨烯的装置上的桥梁生长。 PICOSECOND激光加工系统用于划线石墨烯/玻璃基板并形成V形槽。在ZnO纳米线的越来越多的过程中，将甲醇的表面活性剂溶液加入到生长溶液中以降低V形槽的表面张力。因此，生长的ZnO纳米线可以从凹槽边缘的两侧增加它们的接触面积。实验结果表明，通过使用脉冲重复率为300kHz的脉冲重复率，扫描速度为100mm / s，激光流量为1.81 j / cm（2），获得了石墨烯/玻璃基板的V形槽。和3次的划线传递数量。然后，通过浸渍的方法生长ZnO纳米烷基溶液80分钟，并且具有表面活性剂溶液的生长溶液8小时。因此，ZnO纳米线具有453ω的最低电阻。此外，当ZnO纳米线暴露于50ppm，150ppm和300ppm的气体时，气体传感器的敏感性约为14.7％，21.2％和40.2％。

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