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Title: Two-dimensional nanostructured Y{sub 2}O{sub 3} particles for viscosity modification

Nanoparticle additives have been shown to improve the mechanical and transport phenomena of various liquids; however, little has been done to try and explain the rheological modifications provided from such modifications from a theoretical standpoint. Here, we report a non-Einstein-like reduction of viscosity of mineral oil with the utilization of yttrium oxide nanosheet additives. Experimental results, coupled with generalized smoothed-particle hydrodynamics simulations, provide insight into the mechanism behind this reduction of fluid shear stress. The ordered inclination of these two-dimensional nanoparticle additives markedly improves the lubricating properties of the mineral oil, ultimately reducing the friction, and providing a way in designing and understanding next generation of lubricants.
Authors:
; ;  [1] ; ;  [2]
  1. Department of Mechanical Engineering, Texas A and M University, College Station, Texas 77843-3123 (United States)
  2. Department of Mechanical Engineering, Columbia University, New York, New York 10027 (United States)
Publication Date:
OSTI Identifier:
22262559
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; LIQUIDS; LUBRICANTS; NANOSTRUCTURES; PETROLEUM; VISCOSITY; YTTRIUM OXIDES