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      Capillary origami as a new method for obtaining folded structures with interior nanoparticle coating

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      Embargo Lift Date: 2022-06-01
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      Author(s)
      Özkazanç, Gökçe
      Erdem, E. Yegan
      Date
      2020
      Source Title
      Surfaces and Interfaces
      Print ISSN
      2468-0230
      Publisher
      Elsevier
      Volume
      19
      Pages
      100537-1 - 100537-10
      Language
      English
      Type
      Article
      Item Usage Stats
      26
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      Abstract
      We introduce capillary origami as a new method to obtain 3D enclosures with coated nanoparticles on their inner surfaces. When a liquid droplet that contains nanoparticles is placed on the surface of a thin and flexible membrane, the membrane folds around the droplet. As the droplet evaporates nanoparticles deposit on folded surfaces and eventually a 3D enclosure is obtained. In this study, both magnetic iron-oxide (Fe3O4) and gold (Au) nanoparticles are used and it is shown that with both types of nanoparticles the enclosures remain closed after the complete evaporation of the droplet. It is also demonstrated that the magnetic nanoparticles can be concentrated at a chosen location on the folded geometry by using a magnet during evaporation. The origami based coating method is applied on different geometries and distribution of nanaparticles depending on the surface orientation is quantified. As part of the study, the capillary origami behavior of liquids with and without nanoparticles is compared.
      Keywords
      Capillary origami
      Nanoparticle assembly
      Nanoparticle coating
      Surface science
      Capillarity
      Permalink
      http://hdl.handle.net/11693/75811
      Published Version (Please cite this version)
      https://dx.doi.org/10.1016/j.surfin.2020.100537
      Collections
      • Department of Mechanical Engineering 288
      • Nanotechnology Research Center (NANOTAM) 1063
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