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Über dieses Buch

This book provides an overview of the fundamentals of plasmonic field enhancement phenomena and the recent advancements in the field of hydrogen energy technologies that utilize plasmonics for their performance enhancement. Hydrogen energy is currently a representative clean energy without polluting or greenhouse emission in its use. However, industrial production of hydrogen molecules, or other usable hydrogen-containing molecules, is required for the use of hydrogen energy. It is also important to produce hydrogen in clean, renewable manners, to contribute to the solution of the environmental problems, such as atmospheric pollution and global warming, and of the depletion of energy resources. For the widespread use of hydrogen energy, technical developments particularly for hydrogen production and storage are highly sought after. Free electrons in metals, particularly around metal surfaces or interfaces with dielectric materials, exhibit a strong interaction with electromagnetic fields or light in the form of collective oscillation, named surface plasmons. The electromagnetic field intensity around subwavelength-size metal particles can be highly localized due to the coupling between the incident photons and collective oscillation of free electrons at the metal surface, resulting in focusing of electromagnetic energy density, or namely local field enhancement.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Hydrogen Energy Technology and Plasmonics

Abstract
The hydrogen energy is currently a representative clean energy without polluting or greenhouse emission in its use, in contrast to the conventional fossil fuels.
Katsuaki Tanabe

Chapter 2. Field Enhancement Around Spherical Metal Nanoparticles and Nanoshells

Abstract
To quantitatively discuss the plasmonic field enhancement effect, the field enhancement factor, defined as the ratio of the electromagnetic field intensity around the metal object to that in the absence of the object, or the original incident field, is calculated as follows.
Katsuaki Tanabe

Chapter 3. Field Enhancement on Planar Metal Surface

Abstract
Next, we present the calculation of the field enhancement factors on planar metal surfaces.
Katsuaki Tanabe

Chapter 4. Field Enhancement at Sharp Metal Tips

Abstract
In contrast to the plasmonic field enhancement effect on planar metal surfaces discussed in the previous chapter, it is known that surfaces with sharp curvatures allow the electromagnetic field to concentrate further.
Katsuaki Tanabe

Chapter 5. Field Enhancement in Metal Nanogaps

Abstract
In the previous chapters, we discussed the plasmonic field enhancement factors on planar and spherical surfaces and also at sharp tips of nanoparticles or nanoscale surface roughnesses of hydrogen-absorbing transition metals.
Katsuaki Tanabe

Chapter 6. Applications

Abstract
Hydrogen production from water, or so-called water splitting, by using photocatalysts is intensively studied.
Katsuaki Tanabe
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