Authors: A.C. Cascalheira, A.S. Viana, L.M. Abrantes
661
Authors: In Hee Choi, Young Hun Kim, Chang Mook Kim, Jin Soo Kim, Kyung Hee Choi, Jong Heop Yi
Abstract: Site-defined metal microstructure was fabricated on the pre-designed organic template via a surface modification of Si(100) wafer. Site-defined substrate with octadecyltrichlorosilane (OTS) was oxidized by AFM (Atomic Force Microscopy) at threshold voltage (Vo). Terminal group (-CH3) of OTS was changed into carboxyl group (-COOH). Then, locally modified monolayer surface was used to induce the site-selective self-assembly of different materials (organic, metal, and semiconductor), according to the predefined patterns. The target metal selected is copper ions for the feasibility examination of conductive metal line fabrication
903
Authors: Dong Seok Seo, Hwan Kim, Jong Kook Lee
Abstract: The surface dissolution of hydroxyapatite ceramics in distilled water was investigated by using
atomic force microscopy (AFM) and scanning electron microscopy (SEM). The disks made of
hydroxyapatite powder were sintered at 1200oC for 2 h in air with under moisture protection. After
sintering, the disks were polished to smoothness using 1 μm diamond and they were soaked in 40 ml of
pH 7.4 distilled water at 37oC for certain period of time. The morphological change of hydroxyapatite
surface, specifically at the initial stage of immersion, and related surface roughness were observed with
immersion time. The present study suggested that an artificial fact like surface scratch in this case
initiated to be eliminated prior to the surface dissolution along grain boundary. That is, the surface
roughness decreased at the initial stage of immersion, and then increased due to the surface dissolution.
1553
Authors: Ling Ling Meng, Xin Min Huang, Qu Fu Wei
Abstract: PET(polyester) plain woven fabric deposited with nano-structured silver thin film was prepared by RF (radio frequency) magnetron sputtering at room temperature. The effect of different sputtering technical parameters on the morphology and particle diameters of the nano-structured silver thin film was characterized by AFM(atomic force microscope)and the conductivities of silver thin films were also analyzed under different sputtering technical parameters. The results indicated that the nanoparticles size of sliver thin films increased with higher sputtering power, the conductivity of sliver thin films was first decreased and then markedly enhanced; The nanoparticles size of sliver thin films decreased with higher gas pressure, the conductivity was markedly decreased; The nanoparticles size of sliver thin films increased with longer sputtering time, the conductivity was markedly enhanced, The best conductivity was achieved at the sputtering time of 15min.
2356
Authors: Hong Ying Xia, Feng Zhao
Abstract: In this paper, the morphology change of various polymers at the mica –water interface, such as polyvinylpyrrolidone (PVP), polystryrenesulfonate (PSS), and partially hydrated polyacrylamide (HPAM) in different environments was investigated by atomic force microscopy (AFM). We found that PVP molecules deposited on mica from aqueous solution appeared in stretched wormlike coils forming densely packed films. In NaCl solution, the globular molecular conformation was observed. For PSS molecules the similar results were obtained. HPAM molecules deposited on the mica surface from aqueous solution at natural pH were observed to form a nanostructured network
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