Direct measurement of interfacial curvature distributions in a bicontinuous block copolymer morphology.
Direct measurement of interfacial curvature distributions in a bicontinuous block copolymer morphology.
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直接测量双连续嵌段共聚物形态中的界面曲率分布。
DOI：
10.1103/physrevlett.84.518
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Hashimoto,T
中科院分区：
文献类型：
--
作者：
Jinnai,H;Nishikawa,Y;Spontak,RJ;Smith,SD;Agard,DA;Hashimoto,T
自洽场理论预测嵌段共聚物的复杂相行为并不像曾经认为的那样仅仅源于界面寻求恒定的平均曲率，而是反映了界面张力和填充挫折的竞争最小化。为了测试这一预测，我们直接测量界面曲率分布从三维图像重建的双连续螺旋形态。这里得到的结果表明，螺旋状接口是不恒定的平均曲率，并确认包装挫折在稳定这种复杂的纳米结构的重要性。
Self-consistent field theory predicts that the complex phase behavior of block copolymers does not originate solely from the interface seeking constant mean curvature as once thought, but instead reflects competing minimization of interfacial tension and packing frustration. To test this prediction, we directly measure interfacial curvature distributions from a 3D image reconstruction of the bicontinuous gyroid morphology. Results obtained here reveal that the gyroid interface is not constant mean curvature and confirm the importance of packing frustration in the stabilization of such complex nanostructures.