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Title: Non-dissipative energy capture of confined liquid in nanopores

In the past, energy absorption of protection/damping materials is mainly based on energy dissipation, which causes a fundamental conflict between the requirements of safety/comfort and efficiency. In the current study, a nanofluidic “energy capture” system is reported, which is based on nanoporous materials and nonwetting liquid. Both molecular dynamics simulations and experiments show that as the liquid overcomes the capillary effect and infiltrates into the nanopores, the mechanical energy of a stress wave could be temporarily stored by the confined liquid phase and isolated from the wave energy transmission path. Such a system can work under a relatively low pressure for mitigating high-pressure stress waves, not necessarily involved in any energy dissipation processes.
Authors:
;  [1] ; ;  [2] ;  [2] ;  [3]
  1. Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027 (United States)
  2. Department of Structural Engineering, University of California–San Diego, La Jolla, California 92093-0085 (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
22300300
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CAPILLARIES; CAPTURE; CURRENTS; ENERGY ABSORPTION; ENERGY LOSSES; LIQUIDS; MOLECULAR DYNAMICS METHOD; NANOSTRUCTURES; POROUS MATERIALS; POWER TRANSMISSION; SIMULATION; STRESSES