Plasmon localized

Keywords, optical fiber sensor surface plasmon, localized surface plasmon, biomolecules... 

From close inspection of the image, it is found that the highest enhancement occurs at the isolated dimer (A), and the enhancement observed at the rim or at the defect sites in the assembly is lower. This observation implies that the enhancement is the highest in the dimer and becomes lower with increasing size of the assembly. The finding may have some correlation with the relatively low SERS enhancement reported in close-packed assemblies. Plasmon localization at the rim of the assembly may have some similarities with photon localizations at the boundaries of photonic... 

Maier SA, Atwater HA (2005) Plasmonics localization and guiding of electromagnetic energy in metal/ dielectric structures. J Appl Phys 98 011101... 

A more complex situation is encountered with the devices using plasmonic localization for absorption enhancement. In this case, many of the above... 

Hutter, E. and Fendler, J.H. (2004) Exploitation of localized surface plasmon resonance. Advanced Materials, 16, 1685-1706. 

Rendell, R., Scalapino, D. and Miihlschlegel, B. (1978) Role of local plasmon modes in light emission from small-particle tunnel junctions. Rhys. Rev. Lett., 41, 1746-1750. 

In 1994, we proposed that a metallic needle having a nano-tip at its apex be employed as a nano-light-source for microscopy attaining nanometric spatial resolution [2]. Later, we expanded the technique to Raman spectroscopy for molecular nano-identification, nano-analysis and nano-imaging. In this chapter, we give a brief introduction to local plasmons and microscopy using a metallic nano-needle to produce the local plasmons. Then, we describe the microscope that we built and... 

Kottmann, J. P., Martin, O. J. F Smith, D. R. and Schultz, S. (2001) Non-regularly shaped plasmon resonant nanopartide as localized light source for near-field microscopy. J. Microsc., 202, 60-65. 

Near-Field Optical Imaging of Localized Plasmon Resonances in Metal Nanoparticles... 

In this chapter, we have provided an overview of near-field imaging and spectroscopy of noble metal nanoparticles and assemblies. We have shown that plasmon-mode wavefunctions and enhanced optical fields of nanoparticle systems can be visualized. The basic knowledge about localized electric fields induced by the plasmons may lead to new innovative research areas beyond the conventional scope of materials. 

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