Sea-Fue Wang

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A planar chip antenna for applications in the 2.4/5.2 GHz dual ISM bands is presented in this summary. A software package, XFDTD has been applied to design the chip antenna having dimensions of 8 mm (L) times 5 mm (W) times 0.6 mm (H). An insert molding approach is applied to manufacture the antenna, where meandered metal strips are enclosed with liquid(More)
In this study, BaTiO3–(Bi0.5Na0.5)TiO3 ceramics with various amounts of Ta2O5 dopant were investigated for their ability to enhance high-temperature stability to meet X9R specifications. The results were compared to those for ceramics with the common Nb2O5 additive. The best composition appeared to be 0.9BaTiO3–0.1(Bi0.5Na0.5)TiO3 with 2 mol% Ta2O5 dopant(More)
A new approach named MPSO-TS, which combines the advantages of particle swarm optimization (PSO) in global search, Tabu search (TS) technique in local search, and the mutation operation in improving solution diversity, is presented in this study. Experimental result obtained with ten benchmark functions illustrates that the proposed MPSO-TS is superior to(More)
Ni<sub>0.5-0.5x</sub>Zn<sub>0.5-0.5x</sub>Mg<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> and Ni<sub>0.4</sub>Zn<sub>0.6-2x</sub>Li<sub>x</sub>Fe<sub>2+x</sub>O<sub>4</sub> ferrites (x = 0.05, 0.10, and 0.15) were prepared and examined. Both systems after sintering showed a pure spinel phase and a uniform grain size and the lattice constants declined slightly as(More)
Carbon dots (C-dots)/Fe<sub>3</sub>O<sub>4</sub> nanocomposite powders were synthesized by bottom-up procedures at 140 &#x00B0;C with different reaction times (<inline-formula> <tex-math notation="LaTeX">$t = 0$ </tex-math></inline-formula>&#x2013;18 h), to study the photocatalytic activity under visible light and recyclable ability in wastewater treatment.(More)
The Co-rich type Co-Pt alloy thin films were deposited on various thicknesses of Pt underlayer (tPt) on glass substrates at room temperature. It was observed that the magnetic properties, microstructures, and phase structures of Co-Pt films were significantly affected by Pt(111) underlayer. At t<sub>Pt</sub> = 5 nm, very small Pt grains induced multiple(More)
It would be ideal if bone substitutes could be absorbed by the human body upon the formation of new bone. Although calcium sulfate is absorbable, its biodegradation rate is very fast. Fortunately, this rate can be reduced significantly through various sintering techniques. This study demonstrates that the degradation rate of sintered CS specimens can be(More)
Several nanomaterials and techniques for the detection of mercuric ions (Hg(2+)) have been developed in the past decade. However, simple, low-cost and rapid sensor for the detection of heavy metal ions yet remains an important task. Herein, we present a highly sensitive electrochemical sensor for the femtomolar detection of Hg(2+) based on polypyrrole,(More)
In this study, we show that acid yellow 9 (4-amino-1-1'-azobenzene-3,4'-disulfonicacid, AY) is a good stabilizing agent for multi-walled carbon nanotubes (MWCNTs). MWCNTs dispersed in AY solution was remained stable about three months and even remained stable after centrifugation at 10,000 rpm for 30 min. Using MWCNTs/AY dispersion, thin-films were prepared(More)
L1<sub>1</sub> CoPt hlms were fabricated on glass substrate with Pt underlayer by alternate deposition of Co and Pt hlms. The effect of individual Co and Pt thickness, and the total CoPt hlm thickness on structural and magnetic properties were investigated. In this paper, the experiments were divided into two parts. In the hrst part,(More)