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Nanopipette dynamic microscopy unveils nano coffee ring.
Zhang, Deyi; Shao, Yi; Zhou, Jiayi; Zhan, Qiangwei; Wen, Ziyang; Mao, Sheng; Wei, Jingjing; Qi, Limin; Shao, Yuanhua; Wang, Huan.
Afiliación
  • Zhang D; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Shao Y; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Zhou J; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Zhan Q; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Wen Z; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Mao S; College of Engineering, Peking University, Beijing 100871, People's Republic of China.
  • Wei J; School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
  • Qi L; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Shao Y; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
  • Wang H; Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Key Laboratory of Polymer Chemistry and Physics, National Biomedical Imaging Center, Peking University, Beijing 100871, People's Republic of China.
Proc Natl Acad Sci U S A ; 121(28): e2314320121, 2024 Jul 09.
Article en En | MEDLINE | ID: mdl-38954540
ABSTRACT
Liquid-phase electron microscopy (LP-EM) imaging has revolutionized our understanding of nanosynthesis and assembly. However, the current closed geometry limits its application for open systems. The ubiquitous physical process of the coffee-ring phenomenon that underpins materials and engineering science remains elusive at the nanoscale due to the lack of experimental tools. We introduce a quartz nanopipette liquid cell with a tunable dimension that requires only standard microscopes. Depending on the imaging condition, the open geometry of the nanopipette allows the imaging of evaporation-induced pattern formation, but it can also function as an ordinary closed-geometry liquid cell where evaporation is negligible despite the nano opening. The nano coffee-ring phenomenon was observed by tracking individual nanoparticles in an evaporating nanodroplet created from a thin liquid film by interfacial instability. Nanoflows drive the assembly and disruption of a ring pattern with the absence of particle-particle correlations. With surface effects, nanoflows override thermal fluctuations at tens of nanometers, in which nanoparticles displayed a "drunken man trajectory" and performed work at a value much smaller than kBT.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos