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Wetting Property Modification of Al2O3 by Helium Ion Irradiation: Effects of Beam Energy and Fluence on Contact Angle
Langmuir ( IF 3.9 ) Pub Date : 2021-09-14 , DOI: 10.1021/acs.langmuir.1c01859
Jung Woo Kim 1, 2 , Seung Hwa Yoo 3 , Young Bae Kong 1 , Sung Oh Cho 2 , Eun Je Lee 1
Affiliation  

In imparting wetting properties, a fabrication process without the addition of new compounds and deposition of coating layers would be the most desirable because it does not introduce additional complexities. Hence, the ion beam irradiation technique is used as it enables the chemistry of materials to be modified through simple adjustments of irradiation parameters such as the type of accelerated particles, beam energy, and fluence. In this study, the hydrophilicity of alumina surfaces was weakened by irradiating He ion beams of different energy levels (200 keV and 20 MeV). These transitions become more pronounced as the total beam fluence increases. In low-energy irradiation, the effect of irradiation is predominant near the surface, and hydrophilicity is weakened by the increase in carbon adsorption and suppression of dissociative adsorption of water molecules owing to the introduction of oxygen vacancies. In contrast, nuclear transmutations are induced by irradiation with high-energy beams. Consequently, fluorine is generated, and hydrophobic functional groups are formed on the surface. By varying the beam conditions, the wetting properties of the target ceramic can be controlled to the desired level, which is required in various industries, via appropriate adjustments of the beam parameters. In addition, the beam irradiation technique may be applicable to all ceramic materials, including lattice oxygen and alumina.

中文翻译:

氦离子辐照对 Al2O3 润湿性能的改变:束能量和通量对接触角的影响

在赋予润湿性能方面,不添加新化合物和沉积涂层的制造过程将是最理想的,因为它不会引入额外的复杂性。因此,使用离子束辐照技术,因为它可以通过简单调整辐照参数(例如加速粒子的类型、束能量和注量)来改变材料的化学性质。在这项研究中,氧化铝表面的亲水性通过照射不同能级(200 keV 和 20 MeV)的氦离子束而减弱。随着总光束注量的增加,这些转变变得更加明显。在低能辐照中,辐照效应在表面附近占主导地位,由于氧空位的引入,碳吸附增加和水分子解离吸附受到抑制,亲水性减弱。相比之下,核嬗变是由高能束辐照引起的。因此,产生氟,并在表面形成疏水性官能团。通过改变光束条件,可以通过适当调整光束参数,将目标陶瓷的润湿特性控制在不同行业所需的所需水平。此外,光束照射技术可适用于所有陶瓷材料,包括晶格氧和氧化铝。产生氟,并在表面形成疏水性官能团。通过改变光束条件,可以通过适当调整光束参数,将目标陶瓷的润湿特性控制在不同行业所需的所需水平。此外,光束照射技术可适用于所有陶瓷材料,包括晶格氧和氧化铝。产生氟,并在表面形成疏水性官能团。通过改变光束条件,可以通过适当调整光束参数,将目标陶瓷的润湿特性控制在不同行业所需的所需水平。此外,光束照射技术可适用于所有陶瓷材料,包括晶格氧和氧化铝。
更新日期:2021-09-28
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