Salapare Hernando S, Balbarona Juvy A, Clerc Léo, Bassoleil Pierre, Zenerino Arnaud, Amigoni Sonia, Guittard Frédéric
Université Côte d'Azur, NICE Lab, IMREDD, 06100 Nice, France.
Faculty of Education, University of the Philippines Open University, Los Baños 4030, Laguna, Philippines.
Biomimetics (Basel). 2019 Jun 25;4(2):42. doi: 10.3390/biomimetics4020042.
Taking inspiration from the hydrophilic and superhydrophilic properties observed from the nanostructures present on the leaves of plants such as , , and , we were able to synthesize cupric oxide (CuO) nanostructures from the plasma surface modification of copper (Cu) that exhibits hydrophilic and superhydrophilic properties. The Cu sheets were exposed to oxygen plasma produced from the P300 plasma device (Alliance Concept, Cran-Gevrier, France) at varying power, irradiation times, gas flow rates, and pulsing duty cycles. The untreated and plasma-treated Cu sheets were characterized by contact angle measurements, scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) to determine the changes in the surface of Cu before and after plasma treatment. Results showed that plasma-treated Cu sheets exhibited enhanced wetting properties compared to untreated Cu. We attributed the decrease in the measured water contact angles after plasma treatment to increased surface roughness, formation of CuO nanostructures, and transformation of Cu to either CuO or CuO. The presence of the CuO nanostructures on the surface of Cu is very useful in terms of its possible applications, such as: (1) in antimicrobial and anti-fouling tubing; (2) in the improvement of heat dissipation devices, such as microfluidic cooling systems and heat pipes; and (3) as an additional protection to Cu from further corrosion. This study also shows the possible mechanisms on how CuO, CuO, and CuO were formed from Cu based on the varying the plasma parameters.
从诸如[具体植物名称1]、[具体植物名称2]和[具体植物名称3]等植物叶片上存在的纳米结构所观察到的亲水性和超亲水性特性中获取灵感，我们能够通过对铜（Cu）进行等离子体表面改性来合成具有亲水性和超亲水性特性的氧化铜（CuO）纳米结构。将铜片暴露于由P300等离子体装置（法国克兰 - 热夫里尔的联盟概念公司）产生的氧等离子体中，改变功率、辐照时间、气体流速和脉冲占空比。通过接触角测量、扫描电子显微镜（SEM）和能量色散光谱（EDS）对未处理和经等离子体处理的铜片进行表征，以确定等离子体处理前后铜表面的变化。结果表明，与未处理的铜相比，经等离子体处理的铜片表现出增强的润湿性。我们将等离子体处理后测量的水接触角的减小归因于表面粗糙度增加、CuO纳米结构的形成以及Cu向CuO或Cu₂O的转变。Cu表面存在的CuO纳米结构在其可能的应用方面非常有用，例如：（1）用于抗菌和防污管材；（2）用于改善散热装置，如微流体冷却系统和热管；（3）作为对Cu进一步腐蚀的额外保护。本研究还展示了基于不同等离子体参数，Cu如何形成CuO、Cu₂O和Cu₃O的可能机制。
