1 / 47

揉皺的鋁罐和液晶 有什麼共通的性質 ?

揉皺的鋁罐和液晶 有什麼共通的性質 ?. 清華大學物理系 洪在明 ming@phys.nthu.edu.tw 03-5742510. 小組成員和合作者：. 林彥誌 、侯宗昆、張菀馨、楊修維、蕭人豪、張國煜、 王柏庭、譚弘、沈佳樑、 周明翰、劉軒帆 、李晉元 王永利、劉瑩 、 孫濟明、裴東斐、高文沛（北大）、 白武斌（科大）. 參考文獻：. Y. C. Lin, Y. L. Wang, Y. Liu, and TMH , “Crumpling under an ambient pressure”, PRL 101, 125504 (2008)

wynter-castro
Télécharger la présentation

揉皺的鋁罐和液晶 有什麼共通的性質 ?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 揉皺的鋁罐和液晶有什麼共通的性質? 清華大學物理系 洪在明 ming@phys.nthu.edu.tw 03-5742510

  2. 小組成員和合作者： 林彥誌、侯宗昆、張菀馨、楊修維、蕭人豪、張國煜、王柏庭、譚弘、沈佳樑、周明翰、劉軒帆、李晉元 王永利、劉瑩、孫濟明、裴東斐、高文沛（北大）、白武斌（科大）

  3. 參考文獻： • Y. C. Lin, Y. L. Wang, Y. Liu, and TMH, “Crumpling under an ambient pressure”, PRL 101, 125504 (2008) • Y. C. Lin, Y. W. Lin, and TMH, “Crumpling wires in two dimensions”, PRE78, 067101 (2008) • Y. C. Lin, J. M. Sun, H. W. Yang, Y. K. Hwu, C. L. Wang, and TMH, “X-ray tomography of a crumpled plastoelastic thin sheet”, PRE80, 066114 (2009) • Y. C. Lin, J. M. Sun, J. H. Hsiao, Y. K. Hwu, C. L. Wang, and TMH, “Spontaneous emergence of ordered phases in crumpled sheets”, PRL103, 263902 (2009) • W. B. Bai, C. K. Hou, Y. C. Lin, and TMH, “Scaling behavior for crumpled thin sheets at high pressure” (in preparation) • 林彥誌、王永利、劉瑩和洪在明，The physics of crumpling淺談皺摺力學，物理雙月刊30卷4期，457頁(2008)

  4. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  5. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  6. Meta-stable states K. Matan, R. B. Williams, T. A. Witten, and S. R. Nagel, PRL 88, 076101 (2002)

  7. Noises due to crumpling P. A. Houle and J. P. Sethna, PRE 54, 278 (1996)

  8. Self-organized Voronoi diagram C. A. Andresen and A Hansen, and J. Schmittbuhl, PRE 76, 026108 (2007)

  9. Simulations conclude: Y. Kantor, M. Kardar, and D. R. Nelson, PRL 57, 791 (1986) G. A. Vliegenthart and G. Gompper, Nature Mater. 5, 216 (1006) T. Tallinen, J. A. Astrom, and J. Timonen, Nature Mater. 8, 25 (2009)

  10. uniaxial uniaxial 2D M A F Gomes Brazil A Boudaoud ENS Paris Alexander S. Balankin Mexico The crumpling lab around the world 3D 3D uniaxial Clark University Kudrolli Cornell University James P. Sethna U. Chicago S. R. Nagel

  11. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  12. 實驗裝置和樣品： • Aluminum, copper, and lead foils • BOPP, HDPE, PVC • Tissue, cloth • Different surface friction

  13. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  14. Y. C. Lin, Y. W. Lin, and TMH, PRE78, 067101 (2008)

  15. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  16. Y. C. Lin, J. M. Sun, H. W. Yang, Y. K. Hwu, C. L. Wang, and TMH, PRE80, 066114 (2009)

  17. 壓扁的鋁罐和液晶有什麼共通？ Y. C. Lin, J. M. Sun, J. H. Hsiao, Y. K. Hwu, C. L. Wang, and TMH, PRL103, 263902 (2009)

  18. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  19. 演講大綱： Introduction (10 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (5 min)

  20. Whypower law?

  21. 當Smart撞上Benz

  22. 演講大綱： Introduction (5 min) Intermediate pressure crumpling (5 min) Wire crumpling (1D simulation) (2 min) X-ray tomography (5 min) High-pressure crumpling (5 min) Theoretical approach (10 min) Discussions (10 min)

  23. 後續工作： • Composite and re-crumplings • 組裝表面粗度儀(profilometer) ─ 施宙聰教授 • 把兩張相同的紙用不同數量的釘書針固定 模擬橡膠的硫化反應(vulcanization) • 把紙剪半刀或1/4刀或10刀，不同揉皺方式 • x-ray tomography觀察高壓揉皺紙團結構 ─ 胡宇光教授 • 一維的揉皺實驗 • 檢驗摺痕所需的功是否和長度的1/3冪次成正比？ • MD電腦模擬? • 理論模型

  24. 參考文獻： • Y. C. Lin, Y. L. Wang, Y. Liu, and TMH, “Crumpling under an ambient pressure”, PRL 101, 125504 (2008) • Y. C. Lin, Y. W. Lin, and TMH, “Crumpling wires in two dimensions”, PRE78, 067101 (2008) • Y. C. Lin, J. M. Sun, H. W. Yang, Y. K. Hwu, C. L. Wang, and TMH, “X-ray tomography of a crumpled plastoelastic thin sheet”, PRE 80, 066114 (2009) • Y. C. Lin, J. M. Sun, J. H. Hsiao, Y. K. Hwu, C. L. Wang, and TMH, “Spontaneous emergence of ordered phases in crumpled sheets”, PRL103, 263902 (2009) • 林彥誌、王永利、劉瑩和洪在明，The physics of crumpling淺談皺摺力學，物理雙月刊30卷4期，457頁(2008)

  25. 感謝： • 國科會、清華大學、清大理學院的支助 • 物理系地下室液態氮工廠的廖紹達和機械工廠的田振滿先生 • 物理系同仁施宙聰、林秀豪、陳培亮教授

  26. Evolution model for cyclic competitions - 林彥誌、TMH和林秀豪 石頭 Frey et al., PRL 102, 048102 (2009) 剪刀 布

  27. Fluctuations lead to dissipation where and

More Related