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Full-Text Articles in Nanoscience and Nanotechnology
Large Scale, Highly Dense Nanoholes On Metal Surfaces By Underwater Laser Assisted Hydrogen Etching Near Nanocrystalline Boundary, Dong Lin, Martin Yi Zhang, Chang Ye, Zhikun Liu, Richard Liu, Gary Cheng
Large Scale, Highly Dense Nanoholes On Metal Surfaces By Underwater Laser Assisted Hydrogen Etching Near Nanocrystalline Boundary, Dong Lin, Martin Yi Zhang, Chang Ye, Zhikun Liu, Richard Liu, Gary Cheng
dong lin
A new method to generate large scale and highly dense nanoholes is presented in this paper. By the pulsed laser irradiation under water, the hydrogen etching is introduced to form high density nanoholes on the surfaces of AISI 4140 steel and Ti. In order to achieve higher nanohole density, laser shock peening (LSP) followed by recrystallization is used for grain refinement. It is found that the nanohole density does not increase until recrystallization of the substructures after laser shock peening. The mechanism of nanohole generation is studied in detail. This method can be also applied to generate nanoholes on other …
Laser Assisted Embedding Of Nanoparticles Into Metallic Materials, Dong Lin, Sergey Suslov, Chang Ye, Yiliang Liao, C. Richard Liu, Gary Cheng
Laser Assisted Embedding Of Nanoparticles Into Metallic Materials, Dong Lin, Sergey Suslov, Chang Ye, Yiliang Liao, C. Richard Liu, Gary Cheng
dong lin
This paper reports a methodology of half-embedding nanoparticles into metallic materials. Transparent and opaque nanoparticles are chosen to demonstrate the process of laser assisted nanoparticle embedding. Dip coating method is used to coat transparent or opaque nanoparticle on the surface of metallic material. Nanoparticles are embedded into substrate by laser irradiation. In this study, the mechanism and process of nanoparticle embedding are investigated. It is found both transparent and opaque nanoparticles embedding are with high densities and good uniformities. (C) 2011 Elsevier B. V. All rights reserved.
Magnetic Field Assisted Growth Of Highly Dense Alpha-Fe2o3 Single Crystal Nanosheets And Their Application In Water Treatment, Dong Lin, Biwei Deng, Stephen Sassman, Yaowu Hu, Sergey Suslov, Gary Cheng
Magnetic Field Assisted Growth Of Highly Dense Alpha-Fe2o3 Single Crystal Nanosheets And Their Application In Water Treatment, Dong Lin, Biwei Deng, Stephen Sassman, Yaowu Hu, Sergey Suslov, Gary Cheng
dong lin
Highly dense 2D nanostructures are desirable in photocatalysis, water treatment and energy storage, due to their high surface to volume areas. This paper describes a novel approach combining thermal stress and magnetic force to generate highly dense alpha-Fe2O3 nanosheets on the surface of various iron substrates, including plates and powders. This technique involves the thermal oxidation of iron substrates on a hot plate with a magnetic field. The Lorentz force acting on the ions induced by the magnetic field facilitates the lateral growth of nanosheets. This effect results in a highly porous nanostructure consisting of dense 2D nanosheets with extremely …