Online ISSN : 2434-2386
Print ISSN : 1349-0958
Feature Articles: Research Articles by Selected Young Microscopists from East Asia
Current Progresses of Electron Energy-Loss Spectroscopy in National Taiwan University: Applications in Plasmonics and Surface Resonances in Nanomaterials
Ming-Wen ChuCheng Hsusan Chen
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2010 Volume 45 Issue 1 Pages 3-8


The scanning transmission electron microscopy (STEM) laboratory in National Taiwan University represents the first dedicated electron energy-loss spectroscopy (EELS) group in Taiwan. Our major expenditure in the past five years has been the development of the conjunction of STEM and EELS, STEM-EELS, enabling an electronic characterization at nanometer-scale spatial resolution. Using this combined technique of STEM-EELS, we have unraveled the intriguing surface-plasmon properties in individual gold nanoparticles, popularly known as plasmonics, and revived a class of surface resonances, surface exciton polaritons that had been largely ignored in the past. As what we will discuss through this article, STEM-EELS is not only an indispensable tool for nano-characterizations, but also an avenue for unexpected physics.

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© 2010 The Japanese Society of Microscopy
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