/pdf/self-assembled-monolayers-of-thiolates-on-metals-as-a-form-1neb0hj3k4.pdf

Self-assembled monolayers of thiolates on metals as a form of nanotechnology.

Fundamentals of Plasmonics.- Electromagnetics of Metals.- Surface Plasmon Polaritons at Metal / Insulator Interfaces.- Excitation of Surface Plasmon Polaritons at Planar Interfaces.- Imaging Surface Plasmon Polariton Propagation.- Localized Surface Plasmons.- Electromagnetic Surface Modes at Low Frequencies.- Applications.- Plasmon Waveguides.- Transmission of Radiation Through Apertures and Films.- Enhancement of Emissive Processes and Nonlinearities.- Spectroscopy and Sensing.- Metamaterials and Imaging with Surface Plasmon Polaritons.- Concluding Remarks.

/pdf/plasmonics-fundamentals-and-applications-4syb9877sr.pdf

Plasmonics: Fundamentals and Applications

The surface science of titanium dioxide

Self-assembly is the autonomous organization of components into patterns or structures without human intervention. Self-assembling processes are common throughout nature and technology. They involve components from the molecular (crystals) to the planetary (weather systems) scale and many different kinds of interactions. The concept of self-assembly is used increasingly in many disciplines, with a different flavor and emphasis in each.

http://science.sciencemag.org/content/sci/295/5564/2418.full.pdf

Self-assembly at all scales.

Recent developments have greatly improved the sensitivity of optical sensors based on metal nanoparticle arrays and single nanoparticles. We introduce the localized surface plasmon resonance (LSPR) sensor and describe how its exquisite sensitivity to size, shape and environment can be harnessed to detect molecular binding events and changes in molecular conformation. We then describe recent progress in three areas representing the most significant challenges: pushing sensitivity towards the single-molecule detection limit, combining LSPR with complementary molecular identification techniques such as surface-enhanced Raman spectroscopy, and practical development of sensors and instrumentation for routine use and high-throughput detection. This review highlights several exceptionally promising research directions and discusses how diverse applications of plasmonic nanoparticles can be integrated in the near future.

Biosensing with plasmonic nanosensors

The elementary processes underlying heterogeneous catalysis may be studied experimentally with well-defined single crystal surfaces as model systems. A few examples will serve to illustrate the resulting concepts which form the links to theory.

Surface Science and Catalysis

Surface science letterExcitation mechanism in the photodissociation of dioxygen adsorbed on Pd(111)

Our knowledge on the processes occurring at solid/gas-interphases has tremendously increased during the past years due to the introduction of new surface-sensitive techniques. Since each method probes different aspects evidently only a combined use of various techniques can yield a more or less close picture of the microscopic properties of a surface. There is frequently still a lack of complete theoretical understanding of the available experimental information, but even ‘fingerprint’ characterization or semiquantitative analysis may lead to valuable insights. This series of lectures concentrates on the experimental information for characterization of the elementary steps in chemisorption and catalysis on metals rather than on the problems encountered with the particular methods themselves. The discussion will be mainly restricted to well-defined single-crystal surfaces since with ‘real’ surfaces additional complications come into play.

Chemisorption and Catalysis on Metals: Applications of Surface Spectroscopies

The electrochemical uptake of oxygen on a Ru(0001) electrode was investigated by electron diffraction, Auger spectroscopy, and cyclic voltammetry. An ordered (2 × 2)-O overlayer forms at a potential close to the hydrogen region. At +0.42 and +1.12 V vs Ag/AgCl, a (3 × 1) phase and a (1 × 1)-O phase, respectively, emerge. When the Ru electrode potential is maintained at +1.12 V for 2 min, RuO2 grows epitaxially with its (100) plane parallel to the Ru(0001) surface. In contrast to the RuO2 domains, the non-oxidized regions of the Ru electrode surface are flat. If, however, the electrode potential is increased to +1.98 V for 2 min, the remaining non-oxidized Ru area also becomes rough. These findings are compared with O overlayers and oxides on the Ru(0001) and Ru(1010) surfaces created by exposure to gaseous O2 under UHV conditions. On the other hand, gas-phase oxidation of the Ru(1010) surface leads to the formation of RuO2 with a (100) orientation. It is concluded that the difference in surface energy b...

Gerhard Ertl

Papers

Surface Science and Catalysis

Surface science letterExcitation mechanism in the photodissociation of dioxygen adsorbed on Pd(111)

Chemisorption and Catalysis on Metals: Applications of Surface Spectroscopies

Electrochemical versus Gas‐Phase Oxidation of Ru Single‐Crystal Surfaces.

Mass Spectrometric Investigation of Nonstoichiometric Silver-Fluorine Cluster Compounds AgnFm(0 ≦ m ≦ n)