仿生非对称纤维可控输运功能分子
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- 英文论文题名：Bio-inspired controllable liquid transfer by asymmetric fibers
- 论文作者：刘欢 ; 汪前彬 ; 孟庆安 ; 江雷
- 英文论文作者：Huan Liu ; Qinbin Wang ; Qing'an Meng ; Lei Jiang ; Beihang University
- 年：2016
- 作者机构：北京航空航天大学;
- 论文关键词：非对称纤维 ; 可控输运 ; 功能分子 ; 图案化表面
- 英文论文关键词：Asymmetric fibers ; Controllable transfer ; Functional molecule ; Micro-patterns
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：TS951.11
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：181k
- 原文格式：D
- 会议级别：全国
摘要
自然界中许多生物纤维表现出特殊浸润性,为设计和制造新型功能材料提供了许多重要的科学启示。我们的研究集中在利用非对称生物/仿生纤维的超浸润性,实现可控输运功能高分子为图案化表面。首先我们揭示了中国毛笔可控、高效输运低黏度液体的机制在于新生毛发的多尺度的非对称微观结构:新生毛发具有直径渐变的锥形结构,且表面覆盖有梯度排列的定向结构。这一独特结构导致了液体可以在毛发表面受拉普拉斯压力差、各向异性粘附力和重力的协同作用,并最终达到动态平衡,从而使得毛笔可以大量储存墨水,并实现可控输运。受此启发,我们以新生毛发为结构单元,构筑了一种新型的书写工具,实现高分子溶液在基底的微区锚定和限域铺展,有效调控微区限域内的高分子的取向,堆积和结晶行为,制备得到分辨率宽度在10微米、厚度在100纳米的图案化表面。中国毛笔的这种可控液体输运性能的揭示将给高性能的有机功能器件(OSC,OFET,OLED等)的无模板印刷提供新的思路。
In nature,various biological fibrous systems exhibit a unique dynamic wetting property,which has shown many advantages in inhabiting local environments.Here,we revealed the most fundamental of the Chinese brush:why must the freshly emergent animal hairs.We demonstrated that the unique anisotropic multi-scale structure of the freshly emergent hairs,featured by the tapered architecture with conical tip enveloped by micro-meter scaled ratcheted squamae,is responsible for the controllable liquid transfer.Inspired by these findings,we developed model devices with double-parallel freshly emergent hairs that allows for direct writing functional microlines with10 urn resolution and nanometer-thickness,with well defined profile and uniform distribution on diverse substrates.We envision that the controllable liquid transfer of Chinese brush will shed light on the novel template-free printing of organic composite functional materials devices.
In nature,various biological fibrous systems exhibit a unique dynamic wetting property,which has shown many advantages in inhabiting local environments.Here,we revealed the most fundamental of the Chinese brush:why must the freshly emergent animal hairs.We demonstrated that the unique anisotropic multi-scale structure of the freshly emergent hairs,featured by the tapered architecture with conical tip enveloped by micro-meter scaled ratcheted squamae,is responsible for the controllable liquid transfer.Inspired by these findings,we developed model devices with double-parallel freshly emergent hairs that allows for direct writing functional microlines with10 urn resolution and nanometer-thickness,with well defined profile and uniform distribution on diverse substrates.We envision that the controllable liquid transfer of Chinese brush will shed light on the novel template-free printing of organic composite functional materials devices.
引文
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(2)Q.Wang,Q.Meng,M.Chen,H.Liu*,L.Jiang,ACS Nano,2014,8,8757-8764.
(3)Q.Meng,Q.Wang,H.Liu*,L.Jiang,NPG Asia Materials,2014,6,e125.
(4)Q.Wang,Q.Meng,P.Wang,H.Liu*,and L.Jiang,ACS Nano,2015,9,4362-4370.
(5)T.Yamamoto*,Q.Meng,Q.Wang,H.Liu*,L.Jiang,and M.Doi,NPG Asia Materials,2016,8,e241.
(2)Q.Wang,Q.Meng,M.Chen,H.Liu*,L.Jiang,ACS Nano,2014,8,8757-8764.
(3)Q.Meng,Q.Wang,H.Liu*,L.Jiang,NPG Asia Materials,2014,6,e125.
(4)Q.Wang,Q.Meng,P.Wang,H.Liu*,and L.Jiang,ACS Nano,2015,9,4362-4370.
(5)T.Yamamoto*,Q.Meng,Q.Wang,H.Liu*,L.Jiang,and M.Doi,NPG Asia Materials,2016,8,e241.