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Superhydrophobic self-cleaning lotus effect surfaces are of interest for a variety of applications such as self-cleaning, water repellency and anticorrosion properties. Numerous approaches to generate superhydrophobic surfaces have been proposed. In these studies, high contact angles and reduced contact angle hysteresis were intensively investigated. In our study, we invoked a surface etching technique...
As IC performance increases, many technical challenges appear in the areas of current-carrying capacities, thermal management, I/O density, and thermal-mechanical reliability. To address these problems, the use of aligned carbon nanotubes (CNTs) has been proposed in IC packaging for electrical interconnect and thermal interface materials (TIMs). The theoretically superior electrical, thermal, and...
Novel materials for embedded capacitor applications are in great demands, for which high dielectric constant (k), low dielectric loss and process compatibility with the printed circuit boards (PCBs) are the most important prerequisites. We have systematically investigated an efficient way to enhance the dielectric performance of the high-k nanocomposites by the selection of the appropriate filler,...
In-situ synthesis of Ag nanoparticles was successfully carried out in various epoxy matrix by photochemical method. The effects of reducing agent type, concentration of metal precursor, epoxy matrix type and additives on the morphology of nanoparticles were explored. Transmission electronic microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the...
A simple approach has been developed to produce microstructured inorganic surfaces, which can be prepared by a number of procedures. Microstructure can first be created and then converted from hydrophilic to superhydrophobic by simple SAM treatment. These materials can also be created by dropcasting microparticles capped with hydrophobic groups directly onto treated surfaces. The advantage to the...
This paper presents a novel method to prepare inorganic superhydrophobic silica coatings for microelectro-mechanical systems (MEMS) packaging using sol-gel processing with tetramethoxysilane and isobutyl-trimethoxysilane as precursors. Incorporation of isobutyl-trimethoxysilane into silica causes hydrophobic isobutyl groups to be present on the surface, thus generating surface hydrophobicity. The...
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