飞秒激光诱导铝基的超疏水表面  

Superhydrophobic Surface of Aluminium Base Induced by Femtosecond Laser

作　　者：杨奇彪[1] 邓波 汪于涛 肖晨光[1] 汪幸[1] 陈列[1] 郑重[1] 娄德元[1] 陶青 翟中生[1] Bennett Peter 刘顿[1] 

机构地区：[1]湖北工业大学机械工程学院,湖北武汉430068

出　　处：《激光与光电子学进展》2017年第10期308-314,共7页Laser & Optoelectronics Progress

基　　金：国家科技支撑计划(2015BAF20B03);国家自然科学基金(51405141);湖北省科技支撑计划(2015BAA066);湖北省教育厅项目(D20161406;Q20151404;T201405);湖北工业大学科研启动基金(337028)

摘　　要：利用不同能量的飞秒激光脉冲对铝基材料表面接触角进行调控,并对其浸润性转变机理进行了分析研究。结果表明,经飞秒激光加工和时效处理后,铝基材料表面最终稳定的浸润性状态与激光能量及时效时间相关。随着激光能量的增大,表面接触角由70°转变为150°以上。对不同能量加工条件下的铝基表面形貌、粗糙度及化学成分进行了分析,结果表明,激光加工后的样品浸润性由亲水状态最终转变为超疏水状态。在不同脉冲能量区间均可得到超疏水表面,但其表面微观结构存在非周期性或周期性结构的差异,疏水性能的形成机理不同。The surface contact angles of aluminum-based materials is regulated and controlled by using femtosecond laser pulses with different energies, and the transformation mechanism of wettability is analyzed and studied. The results show that the final stable wettability state of aluminum-based material surfaces after the femtosecond laser processing and aging treatment is related to the laser energy and the aging time. With the increase of the laser energy, the surface contact angle is changed from 70° to above 150°. The morphology, roughness and chemical compositions of aluminum-based surfaces are studied under different pulse energy processing conditions. The results show that the wettability of a laser-processed sample changes from a hydrophilic state to a final super-hydrophobic state. The super-hydrophobic surfaces can be obtained in different pulse energy regions, but there are non-periodic or periodic structural differences in their surface microstructures, and the formation mechanisms of hydrophobic properties are different.

关 键 词：激光光学 飞秒激光 光学加工 激光能量 微纳结构 浸润性转变 

分 类 号：TN249[电子电信—物理电子学]