Janet S. S. Wong  Liang Hong  Sung Chul Bae  Steve Granick 《Journal of Polymer Science.Polymer Physics》2010,48(24):2582-2588

The surface forces apparatus has been combined with fluorescence recovery after photobleaching to measure translational diffusion of polymer confined between mica sheets. This article presents findings using polydimethylsiloxane with number‐average molecular weight M_n = 2200 g mol^?1, the chains end‐labeled with soluble fluorescent dye. Melts with thickness 10 nm display a translational diffusion coefficient (D) with a bulk component and a slower component assigned to surface diffusion. Reduction of thickness to 1.8 nm causes mobility to split into two populations—an immobile fraction (immobile on the time scale of 30–60 min) and a mobile fraction who's D slow only weakly with diminishing film thickness. However, when load causes the confining mica sheets to flatten, D of the mobile fraction drops by up to an additional order of magnitude, depending on the local pressure that squeezes on the polymer. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2010  相似文献   

    

Pan D  Roessl E  Schlomka JP  Caruthers SD  Senpan A  Scott MJ  Allen JS  Zhang H  Hu G  Gaffney PJ  Choi ET  Rasche V  Wickline SA  Proksa R  Lanza GM 《Angewandte Chemie (International ed. in English)》2010,49(50):9635-9639

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Eunah Kang Dr.  Hyun Su Min  Jaeyoung Lee Dr.  Moon Hee Han Dr.  Hyung Jun Ahn Dr.  In‐Chan Yoon Dr.  Kuiwon Choi Dr.  Kwangmeyoung Kim Dr.  Kinam Park Dr.  Ick Chan Kwon Dr. 《Angewandte Chemie (International ed. in English)》2010,49(3):524-528

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Dirk Burdinski Dr.  Jeroen A. Pikkemaat Dr.  Mustafa Emrullahoglu  Francesca Costantini Dr.  Willem Verboom Dr.  Sander Langereis Dr.  Holger Grüll Prof.  Jurriaan Huskens Prof. 《Angewandte Chemie (International ed. in English)》2010,49(12):2227-2229

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Ye D  Liang G  Ma ML  Rao J 《Angewandte Chemie (International ed. in English)》2011,50(10):2275-2279

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Yao L  Xu S 《Angewandte Chemie (International ed. in English)》2011,50(19):4407-4409

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Xin Wang  Li Cao Dr.  Sheng‐Tao Yang  Fushen Lu Dr.  Mohammed J. Meziani Dr.  Leilei Tian Dr.  Katherine W. Sun  Mathew A. Bloodgood  Ya‐Ping Sun Prof. Dr. 《Angewandte Chemie (International ed. in English)》2010,49(31):5310-5314

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Livia S. Eberlin  Allison L. Dill  Alexandra J. Golby Dr.  Keith L. Ligon Dr.  Justin M. Wiseman Dr.  R. Graham Cooks Prof.  Nathalie Y. R. Agar Dr. 《Angewandte Chemie (International ed. in English)》2010,49(34):5953-5956

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Ling Tong  Claire M. Cobley  Jingyi Chen Dr.  Younan Xia Prof.  Ji‐Xin Cheng Prof. 《Angewandte Chemie (International ed. in English)》2010,49(20):3392-3392

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Justin M. Wiseman  Satu M. Puolitaival  Zoltn Takts  R. Graham Cooks  Richard M. Caprioli 《Angewandte Chemie (International ed. in English)》2005,44(43):6967-6967

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