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Recently, developing thick interfacial intermetallic compound layers with rough morphology has been detrimental to the long term solder joint reliability for lead free solders currently. A novel method has been developed to control the morphology and growth of intermetallic compound layers between pure Sn solder ball and Cu substrate by doping flux with amount of 2wt.% metallic Cu nanoparticles. And...
GISAXS has been used to study thermally induced morphology change of submonolayer α-Fe2O3 nanocubes coated on Si(100) substrate. While morphology of nanocube was intact after annealing at 400 °C in vacuum, ambient environment annealing at the same temperature altered morphology of nanocube toward a more rounded shape. It is evident that morphology of nanoparticle is affected by annealing environment...
A simple and effective method to control the growth of carbon nanotubes (CNTs) by introducing 0-dimensional silica particles has been proposed and demonstrated. After being processed with dip-coating and self-assembly of the specific silica nanoparticles, the substrate surface with nano-scale morphology was obtained, and which helped to control the diameters and density during the CNTs growth in a...
Silver nanoparticles with rod and round morphology have been synthesized by a simple polyol process. The morphology depended on those additives used in the process. The obtained Ag product has been applied to form a joint layer with high heat & electrical conductivity in electronic device. A transparent film and narrow conductive line with Ag nanowires have also been successfully fabricated on...
Sn-Ag-Cu solders have been widely used as lead-free candidates for the Ball-Grid-Array (BGA) interconnection in the microelectronic packaging industry. However, widely used Sn-Ag-Cu solders such as with 3.0–4.0 wt% Ag in microelectronics exhibit significantly poorer reliability than SnPb solder. For the improvement of the problem by SAC solder alloys, the IMC control at the interface are needed. In...
Using TiO2 from the hydrolysis of TiOSO4 as the precursor, and polystyrene (PS) as the template, TiO2/PS complex nanoparticles were successfully prepared through Layer-by-Layer self-assembly method. Then erased PS by heating, thus hollow sphere TiO2 was attained. The synthesized materials were characterized by SEM and XRD, the results indicated that TiO2 spheres were deposited on Ti substrate and...
We prepared ZnO/TiO2 nanotubes (TNTs) composite via a two-step route. First, the highly ordered TNTs was prepared by anodization. Then different morphology of ZnO nanostructures were deposited on the surfaces of TNTs by cathodic electrodeposition method. With increasing of the deposition voltage, the morphology of the deposited ZnO nanostructure was gradually changed from nanoparticles to nanocotton...
In this work, the effect of substrate position on the formation of ZnO nanostructures synthesized by thermal evaporation of zinc oxide (ZnO) and carbon nanotubes (CNTs) on silicon substrate is investigated. The multi-wall CNT powder made by chemical vapor deposition was mixed with ZnO powder with a molar ratio of 1:1. The source material was put into the middle of chamber while Si substrates were...
The electrical performance of porcelain insulators will be degraded by the accumulation of the airborne pollutants. In this paper, anti-pollution TiO2 coatings were prepared on the surface of the ceramic substrate through a simple hydrothermal method without high-temperature treatment. The morphology and structure of the coatings were characterized by X-ray diffractometer and scanning electron microscope...
In the present work, ZnO film has been successfully grown on soda-lime glass substrate using a modified Liquid flow deposition technique (LFD). Structural and optical properties of the samples were characterized using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Analysis using X-Rays (EDAX), Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible and Photoluminescence...
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