Amoeba-like self-oscillating polymeric fluids with autonomous sol-gel transition.
Amoeba-like self-oscillating polymeric fluids with autonomous sol-gel transition.
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DOI：
10.1038/ncomms15862
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发表时间：
2017-07-13
影响因子：
16.6
通讯作者：
Yoshida R
中科院分区：
文献类型：
--
作者：
Onoda M;Ueki T;Tamate R;Shibayama M;Yoshida R
在高分子科学领域中，已经创造了许多表现出溶胶-凝胶转变的高分子材料体系。然而，大多数系统是单向刺激响应系统，需要物理信号，如温度变化。在这里，我们报告的嵌段共聚物溶液的设计，在恒定的条件下进行自主和定期的溶胶-凝胶转变，没有任何开关切换通过外部刺激。粘度的这种自振荡的幅度为约2，000 mPa·s。我们还展示了间歇性的向前运动的聚合物溶液的液滴与自主溶胶-凝胶转变同步。这种聚合物溶液有可能成为一种粘液状软机器人的基础，这种机器人可以千变万化地改变其形状并自主移动，这与通过重复的溶胶-凝胶转变向前移动的活阿米巴有关。显示溶胶-凝胶转变的大多数聚合物材料是单向的和刺激响应系统。在这里，作者显示了一个嵌段共聚物的解决方案，在恒定的条件下，经历自主和周期性的溶胶-凝胶转变。
In the field of polymer science, many kinds of polymeric material systems that show a sol-gel transition have been created. However, most systems are unidirectional stimuli-responsive systems that require physical signals such as a change in temperature. Here, we report on the design of a block copolymer solution that undergoes autonomous and periodic sol-gel transition under constant conditions without any on–off switching through external stimuli. The amplitude of this self-oscillation of the viscosity is about 2,000 mPa s. We also demonstrate an intermittent forward motion of a droplet of the polymer solution synchronized with the autonomous sol-gel transition. This polymer solution bears the potential to become the base for a type of slime-like soft robot that can transform its shape kaleidoscopically and move autonomously, which is associated with the living amoeba that moves forward by a repeated sol-gel transition. Most polymeric materials that show sol-gel transitions are unidirectional and stimuli-responsive systems. Here the authors show a block copolymer solution that undergoes autonomous and periodic sol-gel transitions under constant conditions.
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影响因子：
4.6
作者：
Onoda M;Ueki T;Shibayama M;Yoshida R
通讯作者：
Yoshida R
影响因子：
4.4
作者：
KOPPEL, DE
通讯作者：
KOPPEL, DE
影响因子：
6.3
作者：
PROVENCHER, SW
通讯作者：
PROVENCHER, SW
影响因子：
16.6
作者：
Postma, Sjoerd G. J.;Vialshin, Ilia N.;Huck, Wilhelm T. S.
通讯作者：
Huck, Wilhelm T. S.
影响因子：
--
作者：
KUHNERT, L;KRUG, HJ
通讯作者：
KRUG, HJ