Rheology of glassy materials

玻璃材料的流变学

• 批准号: 21740309
• 负责人: FURUKAWA Akira
• 金额: $ 2.75万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740309/
• 关键词: ガラス; 過冷却液体; レオロジー; 粘弾性; ソフトマター; ゲル; 流体力学的相互作用

Nonlinear transport phenomena of glassy materials(especially the rheological behaviors) have been theoretically investigated. The main results are as follows.(i) Using molecular dynamics simulations, we for the first time showed clear evidence for the mesosocpic nature of the anomalous viscous transport and viscoelasticity in a supercooled liquid. Our finding strongly suggests that the correlated structure associated with dynamic heterogeneity is of fundamental importance in the slow dynamics of supercooled liquids.(ii) A novel viscoelastic model of fracture of amorphous materials was provided. On the basis of this model, we demonstrated that nonlinear behavior associated with fracture can be a consequence of the dynamic coupling between density fluctuations and deformation fields.

理论上已经研究了玻璃材料的非线性转运现象（尤其是流变行为）。主要结果如下。（i）使用分子动力学模拟，我们首次向超冷液体中异常粘性转运和粘弹性的中socopic性质展示了明确的证据。我们的发现强烈表明，与动态异质性相关的相关结构在超冷液体的缓慢动力学中至关重要。在此模型的基础上，我们证明了与断裂相关的非线性行为可能是密度波动和变形场之间动态耦合的结果。

项目成果

Direct evidence of heterogeneous mechanical relaxation in supercooled liquids

• DOI: 10.1103/physreve.84.061503
• 发表时间: 2011-12-14
• 期刊: PHYSICAL REVIEW E
• 影响因子: 2.4
• 作者: Furukawa, Akira;Tanaka, Hajime
• 通讯作者: Tanaka, Hajime

Key Role of Hydrodynamic Interactions in Colloidal Gelation

• DOI: 10.1103/physrevlett.104.245702
• 发表时间: 2010-06-15
• 期刊: PHYSICAL REVIEW LETTERS
• 影响因子: 8.6
• 作者: Furukawa, Akira;Tanaka, Hajime
• 通讯作者: Tanaka, Hajime

Inhomogeneous flow and fracture of glassy materials

• DOI: 10.1038/nmat2468
• 发表时间: 2009-07-01
• 期刊: NATURE MATERIALS
• 影响因子: 41.2
• 作者: Furukawa, Akira;Tanaka, Hajime
• 通讯作者: Tanaka, Hajime

Mesoscopic natures of the anomalous viscous transport and viscoelasticity in supercooled liquids

过冷液体中反常粘性输运和粘弹性的介观性质

• 作者: Kenta Shimizu;Yasunori Minami;Yoshiaki Nakao;Ken-ichiro Ohya;Hideyuki Ikehira;and Tamejiro Hiyama;小林修;Akira Furukawa
• 通讯作者: Akira Furukawa