53 posts · 62,356 views
PhD Candidate in polymer chemistry and physics Research Institute of Material Science, South China University of Technology, Guangzhou, P. R. China Please visit my page at www.andrewsun.net or subscribe my FriendFeed at http://feeds2.feedburner.com/AndrewSun-Friendfeed.
On The Road
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万物皆流
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- February 12, 2012
- 12:48 PM
- 540 views
自愈合材料和“万物皆流”
by Andrew Sun in 万物皆流
在入正题之前先谈谈ResearchBlogging.org。我一直没有忘记它。但是最近很少更新，原因是我越来越没时间看无关紧要的论文了。而且就算有时间看，我也发现绝大多数论文是不值得再去回味的。虽然我会一直不忘使用ResearchBlogging.org来讨论paper，但是假如中文有ResearchBlogging.org的类似产品，我会转用中文产品。因为我发现很多web应用，就算不是因为GFW，也是需要被抄袭成中文版之后........ Read more »
Zheng, P., & McCarthy, T. (2012) A Surprise from 1954: Siloxane Equilibration Is a Simple, Robust, and Obvious Polymer Self-Healing Mechanism. Journal of the American Chemical Society, 134(4), 2024-2027. DOI: 10.1021/ja2113257
- August 14, 2011
- 05:18 PM
- 976 views
Cox-Merz rule：表观的普遍性和理论的普适性
by Andrew Sun in 万物皆流
Mead, D. (2011). Analytic derivation of the Cox–Merz rule using the MLD "toy" model for polydisperse linear polymers Rheologica Acta DOI: 10.1007/s00397-011‑0550-5 前段时间，我导师给过我一篇流变学实验的稿子帮忙审一下。文章是在比较Giesekus和PTT两个模型，实验体系是一种多糖高分子水溶液。其中作者对样品是否符合Cox-Merz规则进行了一下验证，发现低浓度的样品符合规则，高浓度的样品就不符合，一般性地........ Read more »
Mead, D. (2011) Analytic derivation of the Cox–Merz rule using the MLD “toy” model for polydisperse linear polymers. Rheologica Acta. DOI: 10.1007/s00397-011-0550-5
- August 3, 2011
- 03:23 PM
- 1,177 views
科学史比科学研究更有趣
by Andrew Sun in 万物皆流
Weinberg, S. (2011). Particle physics, from Rutherford to the LHC Physics Today, 64 (8) DOI: 10.1063/PT.3.1216 引起我以上思考的是这篇Phys. Today的科学史散文。量子力学著名科学家Weinberg（与所有外行人一样，我知道他著名仅仅是根据他获得了诺贝尔奖这一事实）向我们介绍了基本粒子研究历史。这一历史事实上到处可以找到，但这是少数（或甚至唯一）我愿意认真阅读的一篇。因为这是由优秀同行撰........ Read more »
Weinberg, S. (2011) Particle physics, from Rutherford to the LHC. Physics Today, 64(8), 29. DOI: 10.1063/PT.3.1216
- July 16, 2011
- 10:18 AM
- 955 views
聚合物填充体系流变学的几个常识
by Andrew Sun in 万物皆流
Bailly, M., Kontopoulou, M., & El Mabrouk, K. (2010). Effect of polymer/filler interactions on the structure and rheological properties of ethylene-octene copolymer/nanosilica composites Polymer, 51, 5506-5515 DOI: 10.1016/j.polymer.2010.09.051 因为我老人家学习流变学是属于自学成才的那种，因此当然是经常一知半解，有所不知，跟那些科班出身的没法儿比。其中一个最大的特点就是我对聚合物流变学非常之不熟。因我的博士课........ Read more »
Bailly, M., Kontopoulou, M., & El Mabrouk, K. (2010) Effect of polymer/filler interactions on the structure and rheological properties of ethylene-octene copolymer/nanosilica composites. Polymer, 5506-5515. DOI: 10.1016/j.polymer.2010.09.051
- March 25, 2011
- 03:34 AM
- 1,125 views
Gap dependent rheology on rotational rheometers
by Andrew Sun in On The Road
Grenard, V., Taberlet, N., & Manneville, S. (2011). Shear-induced structuration of confined carbon black gels: steady-state features of vorticity-aligned flocs Soft Matter DOI: 10.1039/C0SM01515F Conventional rotational rheometers allow test procedures of varying shear strain/stress, temperature and time, corresponding to multiple … Continue reading →... Read more »
Grenard, V., Taberlet, N., & Manneville, S. (2011) Shear-induced structuration of confined carbon black gels: steady-state features of vorticity-aligned flocs. Soft Matter. DOI: 10.1039/C0SM01515F
- March 18, 2011
- 03:03 PM
- 1,014 views
谁先发现重要吗？
by Andrew Sun in 万物皆流
Yu, X., Liang, M., Zhang, S., Liu, Y., Li, J., Sun, Y., M.D., L., Zhang, Q., Popov, V., Li, C., Qu, J., Li, Q., Zhang, Y., Hai, R., Wu, W., Wang, Q., Zhan, F., Wang, X., Kan, B., Wang, S., … Continue reading →
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一股左风
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Yu, X., Liang, M., Zhang, S., Liu, Y., Li, J., Sun, Y., M.D., L., Zhang, Q., Popov, V., Li, C.... (2011) Fever with Thrombocytopenia Associated with a Novel Bunyavirus in China. New England Journal of Medicine, 2147483647. DOI: 10.1056/NEJMoa1010095
- March 16, 2011
- 12:30 PM
- 1,276 views
流变学中的数学
by Andrew Sun in 万物皆流
Scott Blair, G. (1972). Mathematics and Rheology Rheologica Acta, 11 (2), 237-240 DOI: 10.1007/BF01993026 前几天我唠叨过一下物理跟数学的区别。数学只是一个符号逻辑体系。它有自身发展，而且那要求很rigorous很pure。但当别的学科要用它的时候，那就是很工具主义的，能用时用，不能用时又不用了，完全不管这用的部份和不用的部份在逻辑上是密不可分的。对于这些学科来说，数学只是语言。 流变........ Read more »
Scott Blair, G. (1972) Mathematics and Rheology. Rheologica Acta, 11(2), 237-240. DOI: 10.1007/BF01993026
- January 5, 2011
- 07:21 PM
- 837 views
Rheology within the concept of aether
by Andrew Sun in On The Road
N/A (1886). Dilatancy Nature, 33 (853), 429-430 DOI: 10.1038/033429b0 I encountered the word “ether” which apparently did not mean the organic reagent when I was reading a short comment on O. Reynolds’s lecture on dilatancy published on Nature in 1886. … Continue reading →... Read more »
N/A. (1886) Dilatancy. Nature, 33(853), 429-430. DOI: 10.1038/033429b0
- November 5, 2010
- 12:53 PM
- 929 views
Tired of “novel supramolecular hydrogels”
by Andrew Sun in On The Road
Zhang, X., Huang, J., Chang, P., Li, J., Chen, Y., Wang, D., Yu, J., & Chen, J. (2010). Structure and properties of polysaccharide nanocrystal-doped supramolecular hydrogels based on Cyclodextrin inclusion Polymer, 51 (19), 4398-4407 DOI: 10.1016/j.polymer.2010.07.025 Last year I unsubscribed … Continue reading →... Read more »
Zhang, X., Huang, J., Chang, P., Li, J., Chen, Y., Wang, D., Yu, J., & Chen, J. (2010) Structure and properties of polysaccharide nanocrystal-doped supramolecular hydrogels based on Cyclodextrin inclusion. Polymer, 51(19), 4398-4407. DOI: 10.1016/j.polymer.2010.07.025
- October 28, 2010
- 03:01 PM
- 1,190 views
从Adv. Mater.、JACS等顶级期刊谈起
by Andrew Sun in 万物皆流
隔壁学院一个老师做一种水凝胶，找我做了好多流变测试。去年帮做了一批，后来听说发Macromolecules了（具体就不透露了，现在博客红啊，得罪人！）。这学期又集中找我做了好多样品（都快赶上我自己实验的强度了……），听说这凝胶是“自愈合”的，比较新颖，想投顶级期刊。 但我跟他学生交流的感觉就是，他们想往文章里塞很多流变学方面的内容，比如想通过动态扫频........ Read more »
Peng, F., Li, G., Liu, X., Wu, S., & Tong, Z. (2008) Redox-Responsive Gel−Sol/Sol−Gel Transition in Poly(acrylic acid) Aqueous Solution Containing Fe(III) Ions Switched by Light. Journal of the American Chemical Society, 130(48), 16166-16167. DOI: 10.1021/ja807087z
Wang, Q., Mynar, J., Yoshida, M., Lee, E., Lee, M., Okuro, K., Kinbara, K., & Aida, T. (2010) High-water-content mouldable hydrogels by mixing clay and a dendritic molecular binder. Nature, 463(7279), 339-343. DOI: 10.1038/nature08693
Ruzicka, B., Zulian, L., Zaccarelli, E., Angelini, R., Sztucki, M., Moussaïd, A., & Ruocco, G. (2010) Competing Interactions in Arrested States of Colloidal Clays. Physical Review Letters, 104(8). DOI: 10.1103/PhysRevLett.104.085701
- October 12, 2010
- 03:13 PM
- 1,075 views
The kind of experimentalist I like
by Andrew Sun in On The Road
Boukany, P., Hemminger, O., Wang, S., & Lee, L. (2010). Molecular Imaging of Slip in Entangled DNA Solution Physical Review Letters, 105 (2) DOI: 10.1103/PhysRevLett.105.027802 About the paper Prof. Shiqing Wang (王十庆) have long been interested in observing the event … Continue reading →... Read more »
Boukany, P., Hemminger, O., Wang, S., & Lee, L. (2010) Molecular Imaging of Slip in Entangled DNA Solution. Physical Review Letters, 105(2). DOI: 10.1103/PhysRevLett.105.027802
- July 27, 2010
- 01:44 PM
- 1,120 views
简单几何与力学模型能否搞定Soft Colloidal Glass流变学？
by Andrew Sun in 万物皆流
Roger T. Bonnecaze, & Michel Cloitre (2010). Micromechanics of Soft Particle Glasses Advances in Polymer Science : 10.1007/12_2010_90 这是Adv. Polym. Sci.尚未组版的一篇综述，但里面却有很多原创部分。从文章标题上看，是要总结最近热门的软胶体玻璃体系。但是在文中，作者提出了一个简单几何与力学模型，一统微凝胶、乳液、星形聚合物、嵌段共聚胶束等体系的剪切流变学和壁滑问题。 软胶体粒子........ Read more »
Roger T. Bonnecaze, & Michel Cloitre. (2010) Micromechanics of Soft Particle Glasses. Advances in Polymer Science. info:/10.1007/12_2010_90
- June 27, 2010
- 02:52 PM
- 1,381 views
分子逻辑门？
by Andrew Sun in 万物皆流
Jochum, F., Forst, F., & Theato, P. (2010). PNIPAM Copolymers Containing Light-Responsive Chromophores: A Method Toward Molecular Logic Gates Macromolecular Rapid Communications DOI: 10.1002/marc.201000146 时不时的就会在化学期刊上看到标题声称弄出个logic gate，结果看完文章有受骗的感觉。 当然，正统的分子电子学研究流派下的分子逻辑门研究是扎实的。据我所知，是从上世纪提出分子间电子转移的时候开始发展。所........ Read more »
Jochum, F., Forst, F., & Theato, P. (2010) PNIPAM Copolymers Containing Light-Responsive Chromophores: A Method Toward Molecular Logic Gates. Macromolecular Rapid Communications. DOI: 10.1002/marc.201000146
- May 31, 2010
- 02:19 PM
- 1,318 views
玻璃还是凝胶——从纠结到调侃
by Andrew Sun in 万物皆流
Ruzicka, B., Zulian, L., Zaccarelli, E., Angelini, R., Sztucki, M., Moussaïd, A., & Ruocco, G. (2010). Competing Interactions in Arrested States of Colloidal Clays Physical Review Letters, 104 (8) DOI: 10.1103/PhysRevLett.104.085701
玻璃化转变是《Science》期刊提出目前亟待解决的125个重要的科学难题之一。自从发现胶体粒子悬浮液体积分数不断增加的过程，会发生跟过冷液体温度不断降低的过程类似的玻璃化转变，胶体玻璃........ Read more »
Ruzicka, B., Zulian, L., Zaccarelli, E., Angelini, R., Sztucki, M., Moussaïd, A., & Ruocco, G. (2010) Competing Interactions in Arrested States of Colloidal Clays. Physical Review Letters, 104(8). DOI: 10.1103/PhysRevLett.104.085701
- April 5, 2010
- 04:10 AM
- 1,351 views
为环保，别离婚。
by Andrew Sun in 万物皆流
Liu, J. (2010). China’s Road to Sustainability Science, 328 (5974), 50-50 DOI: 10.1126/science.1186234
这期Science的Policy Forum有一篇讲到了中国的环境问题和可持续发展。大话题没有什么新意，但里面有些信息比较有趣。
中国政府在近三十年来十分注重环保，但有的措施的结果并不符合期望。
例如在干旱风沙地区大量植树，使得土壤仅有的少量水分被树吸光了，反而加剧了土壤风化。所以越植树........ Read more »
Liu, J. (2010) China's Road to Sustainability. Science, 328(5974), 50-50. DOI: 10.1126/science.1186234
- March 30, 2010
- 01:15 AM
- 1,132 views
转基因农业和高毒农药
by Andrew Sun in 万物皆流
Lele, U. (2010). Food Security for a Billion Poor Science, 327 (5973), 1554-1554 DOI: 10.1126/science.1189247
3月26日这期Science的社论，让我想到了两个问题。一个是农业增收的研究为什么这么紧迫，第二是高毒农药为什么有市场。
越是科普落后的国家，越是信息不透明的政府，越是声音不多元的社会，转基因引起的争议就越大。当然，信息可以不透明到一定程度，使得连争议都没有。我国至少不处于........ Read more »
Lele, U. (2010) Food Security for a Billion Poor. Science, 327(5973), 1554-1554. DOI: 10.1126/science.1189247
- March 13, 2010
- 04:16 PM
- 1,064 views
The most hated journal in science?
by Andrew Sun in On The Road
Enserink, M. (2010). Elsevier to Editor: Change Controversial Journal or Resign Science, 327 (5971), 1316-1316 DOI: 10.1126/science.327.5971.1316A non-peer-reviewed journal called Medical Hypotheses is facing possibly its end as reported by Science, because it contains science related contents that are not...... Read more »
Enserink, M. (2010) Elsevier to Editor: Change Controversial Journal or Resign. Science, 327(5971), 1316-1316. DOI: 10.1126/science.327.5971.1316
- March 7, 2010
- 03:28 PM
- 1,009 views
Are they scientists?
by Andrew Sun in On The Road
This is not a rheology post (yet).The recent Nature editorial:Editorial (2010). Do scientists really need a PhD? Nature, 464 (7285), 7-7 DOI: 10.1038/464007a caught Chinese readers eyes slightly more than usual, because it mentioned in detail a China based commercial...... Read more »
Editorial. (2010) Do scientists really need a PhD?. Nature, 464(7285), 7-7. DOI: 10.1038/464007a
- March 4, 2010
- 11:34 AM
- 1,262 views
凝胶化过程的非线性粘弹性
by Andrew Sun in 万物皆流
熟悉溶液-凝胶转变（sol-gel transition）的朋友应该知道渝渗（percolation）理论。流变学上，H. Winter从高分子凝胶的实验提出的临界凝胶指数也“众”所周知：
至于指数n与渝渗理论的分形指数df之间的关系则要考虑高分子链的排除体积、分子量分布等问题，用得比较多的是M. Muthukumar的关系式：
我们课题组之前在也做了一些这方面的工作。
渝渗理论把凝胶化看成一种相变，还基........ Read more »
Andrade, R., Azevedo, A., Musampa, R., & Maia, J. (2010) Thermo-rheological behavior of model protein–polysaccharide mixtures. Rheologica Acta. DOI: 10.1007/s00397-010-0431-3
- February 21, 2010
- 08:38 AM
- 1,609 views
GM Whitesides的TED演讲
by Andrew Sun in 万物皆流
George M. WhitesidesH-index第一名的人，好像还保持了几年。07年的数据是151。仅仅因为这个他每年诺奖呼声都很高，没得奖估计是他做得太杂。
我是不喜欢从“学霸”这种角度去解释人为什么牛的，因为一方面我个人没有获得什么证据支持这一论点，另一方面这样去解释所有的牛人对于自己变牛没有帮助。用“黑暗”来解释别人牛，其实是草根的做法，因为他们其实是在解释自己........ Read more »
Martinez, A., Phillips, S., Whitesides, G., & Carrilho, E. (2010) Diagnostics for the Developing World: Microfluidic Paper-Based Analytical Devices. Analytical Chemistry, 82(1), 3-10. DOI: 10.1021/ac9013989
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