報告時間：9月4日（星期三）上午10:00
報告地點：催化樓三樓會議室
報告人：汪大洋 教授，吉林大學化學學院
報告摘要：
A diversity of fansy technical applications are speculated in hydrophilic surfaces especially with the aid of water flushing. Anti-fogging, oil repellence under water, anti-fouling, and anti-icing to name a few. Be hydrophilic, a surface ought to possess abundant polar groups atop to ensure effective surface hydration, which can be explicitly correlated with both the nature of surface polar groups and their spatial arrangement with respect to their nestest non-polar neighbours. Yet the expression of effective hydratoin of surface polar groups into excellent technical performace of a hydrophilic surface in a specific application is still an aftermath of trial and error. This reflects a deficiency of knowledge in the filed of surface wetting. That is the absence of quantitative description of the water wettability of hydrophilic surfaces according to surface polar groups; the latter hydration efficiency can be rationally designed with molecular level precision, though. To address this issue, the present talk purposes a new criterion – the molecular packing density of surface polar groups – to quantitatively differentiate surface hydrophilicity by making use of polyelectrolyte multilayered films as model hydrophilic surfaces, which enables us to benchmark the molecular desgin of hydrophilic surface coatings for different types of technical applications. A promonint technical takeaway from this talk is that provided surface polar groups are arranged themselves in an isotropic configuration with respect to their nearest non-polar neighbours, only when their molecular packing density becomes close to the maximum value expected for two-dimensional closely packed spheres (0.90) will hydrophilic coatings be capable of fulfilling nearly all technical applications expected for self-cleaning surfaces including anti-fogging, anti-smudge, anti-icing and anti-wax.
報告人簡介：
汪大洋，1993年于吉林大學化學系獲得高分子材料本科畢業(yè)；1998年吉林大學化學系獲得高分子化學與物理博士畢業(yè)，從師于湯心頤，李鐵津和白玉白教授；1999年在香港科技大學機械工程系David C. C. Lam教授研究組做博士后研究；1999年至2003年間在德國馬普膠體界面所Frank Caruso 教授的研究小組做博士后研究，于2000年獲得德國洪堡基金會獎學金；2003年在德國馬普膠體界面所Helmuth M?hwald教授的界面部擔任研究小組組長；2010年至2015年在澳大利亞南澳大學Ian Wark研究所任物理化學終身研究教授；2015年至2017年在皇家墨爾本理工大學任化工系終身教授；2014年入選英國皇家化學會會士（FRSC）。2016年回國在吉林大學化學學院和無機合成與制備化學國家重點實驗室任職教授。汪大洋已發(fā)表4個學術專著章節(jié)和150余篇高水平的研究論文。
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聯(lián)系電話：84379307
