Volume 13 Issue 2 - March 19, 2010 PDF
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Articles Digest

Research Express@NCKU Mar. 19 ~ Mar. 25, 2010

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GaN-Based Schottky Barrier Photodetectors With a 12-Pair MgxNy-GaN Buffer Layer
Shoou-Jinn Chang

Schottky barrier diodes are key elements for the realization of nitride-based electronic devices such as high electron mobility transistors and UV photodetectors (PDs). However, crystal quality of the GaN epitaxial layers prepared on sapphire substrate is poor due to the large mismatches in lattice constant and thermal expansion coefficient between GaN and sapphire. These mismatches could result …

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Galectin-1, a novel ligand of neuropilin-1, activates VEGFR-2 signaling and modulates the migration of vascular endothelial cells
Yuh-Ling Chen

Angiogenesis is a fundamental process required for a number of physiological and pathological events and is considered a key step in tumor growth, invasion, and metastasis. Vascular endothelial growth factor (VEGF), one of the most potent angiogenic cytokines, regulates both vascular proliferation and permeability, and acts as an anti-apoptotic factor for newly formed blood vessels. The …

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A parabolic equation for wave propagation over porous structures
Tai-Wen Hsu

Porous structures such as seawalls, detached breakwaters, or submerged breakwaters are frequently used to protect shorelines from the effects of waves. The effectiveness of these structures is due to the fact that they are able to reflect, absorb, and dissipate wave energy. Wave energy reduction on the leeside of porous structures increases so that only a small part of the wave energy is …

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A Review of Statistical Methods for Quality Improvement and Control in Nanotechnology
Shuen-Lin Jeng

A nanometer is 10-9 meter. By comparison, a single human hair is about 80,000 nanometers wide. Nanotechnology is the understanding and control of matter at dimensions of roughly 1 to 100 nanometers (nms), where unique phenomena enable novel applications. Many challenges confronting nanotechnology research call for solutions from a multi-disciplinary approach. Statistical techniques, …

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