arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.02013cond-mat.mes-hallcond-mat.soft
收藏

纳米液滴与石墨烯的相互作用

Nanodroplets Impacting on Graphene

Ygor M. Jaques, Gustavo Brunetto, Douglas S. Galvao

摘要:

石墨烯的独特和显着的特性可以作为广泛应用的基础。然而,尽管经过多年的研究,仍有一些重要的石墨烯特性尚未完全了解,例如其润湿性。关于石墨烯究竟是疏水性还是亲水性的报道结果存在争议。为了解决这个问题,我们进行了经典的分子动力学模拟的水纳米液滴对石墨烯表面射击。我们的研究结果表明,纳米液滴和石墨烯表面之间的接触角值取决于初始液滴速度值,这些角度可以从86度(疏水)到35度(亲水)。我们的初步结果表明,石墨烯的润湿性可以依赖于扩散液体动力学,这可以解释一些文献中报道的明显的不一致。

英文摘要:

The unique and remarkable properties of graphene can be exploited as the basis to a wide range of applications. However, in spite of years of investigations there are some important graphene properties that are not still fully understood, as for example, its wettability. There are controversial reported results whether graphene is really hydrophobic or hydrophilic. In order to address this problem we have carried out classical molecular dynamics simulations of water nanodroplets shot against graphene surface. Our results show that the contact angle values between the nanodroplets and graphene surfaces depend on the initial droplet velocity value and these angles can change from 86 degrees (hydrophobic) to 35 degrees (hydrophilic). Our preliminary results indicate that the graphene wettability can be dependent on spreading liquid dynamics and which can explain some of the apparent inconsistencies reported in the literature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑