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学术报告:丝素蛋白软物质的分级网络结构

2016-12-12

主题:  丝素蛋白软物质的分级网络结构

主讲人: 刘向阳

地点: 松江校区纺织学院楼3004会议室

时间: 2016-12-14 09:00:00

组织单位:  纺织学院

报告人简介:

刘向阳教授毕业于山东大学化学系,获得理学学士学位;并于山大晶体材料研究所,获得固体物理硕士学位。1989年,到荷兰莱梅享大学攻读博士学位。于1993年,获得博士学位,并被授于cum   laude称号。在从事两年多博士后研究之后,刘向阳教授于1996 年,被Unilever, Port  Sunlight实验室聘为永久研究员。刘向阳教授于1999  年加入新加坡国立大学物理系,为物理系及化学系的终生正教授。

刘向阳教授于2012年7月以国家“千人计划”特聘教授加入厦门大学。刘向阳教授为教育部长江学者讲座教授,厦门大学物理科学与技术学院副院长,生物仿生及软物质研究院院长,国家教育部/外专局“111”计划-柔性物质研究及应用创新引智基地负责人、福建省柔性功能材料重点实验室主任,厦门市柔性导电材料与器件工程技术研究中心主任。

刘向阳教授在生物物理、仿生材料、纳米科技、晶体生长、表面与胶体科学等方面有超过25年在学术界及工业界工作经验。以第一作者及通讯作者为计,刘向阳教授已在如 Nature,   J. Am. Chem. Soc., Adv. Mat., Angew. Chem. Int. Ed.Phys. Rev.   Lett.等国际著名顶级科技杂志发表了>250篇论文与不同专著重要章节,由著名出版社如Springer,   Wiley-VCH等特邀编写4部专著。受Wiley-VCH出版社邀请,先后于2015年和2016年,刘向阳教授组织Wiley旗下Small杂志“软物质与界面”专刊2期,Adv.   Func.   Mat.杂志“软物质功能化”专刊1期。刘向阳教授共组织国际国内会议30余次,国际国内特邀学术报告110余次,包括著名的高登研究论坛等。并受国家基金委、中科院委托,与科技出版社合作,集全球华人精英之力,主编出版《软物质丛书》(~30卷)。2015年开始主导国家基金委、中科院“十三五”长期发展战略软凝聚态物理部分的编写。


报告大纲:

In order to control the macroscopic properties, the  knowledge on the structural  characteristics in relationship to the properties  of supramolecular materials  becomes then very crucial. Crystal networks, as one  of key mesoscopic  structures, have received increasing attention. I will in  this talk present a  systematic and comprehensive overview on the structural  characteristics and the  formation mechanism of crystal networks. In this  regard, the hierarchy of  crystal network structures: crystal network and domain  network, turns out to be  the basic features of crystal networks. It can be  decribed by the four factors,  the topology, correlation length,  symmetry/ordering, and strength of association  of crystal networks, which  determine the macroscopic behavior of mesoscopic  materials. It follows that the  basic mechanisms of crystal nucleation and growth  were reviewed. These are  further extended to the formation of multi levels of  crystal networks. Four  major pathways of crystal network construction are  discussed in detail. Based  on the correlation between crystal networks and the  macroscopic  properties/performance, the engineering strategy of mesoscopic  materials was  reviewed as well. According to the principle of materials  engineering triangle,  the knowledge on the formation mechanisms of crystal  networks was converted to  the engineering stractegy of mesoscopic materials.  This can be implemented by  introducing various stimuli, ie. additives,  sonication, seeding, thermodynamic  driving force etc. To demonstrate the  principle of crystal networks in the  decription and predicyion of the  macroscopic performance of mesoscopic  materials, the correlation between the  mesoscopic structure and the performance  of biominerals, molecular gels were  overviewed. Furthermore, the much larger  breaking stress and strain of spider  silk fibers than silkworm silk fibers were  explained and predicted within the  framework of hierarchical breaking  mechanism, mainly based on the factors of  ordering, correlation length, the  hierarchical structure and the strength of  nano-fibrils. In general, the  comprehensive understandings on crystal networks  will guide the research and  engineering of mesoscopic materials in the long term


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