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Characterization of dye molecules and carbon nanostructures by tip‐enhanced Raman spectroscopy
Author(s) -
Peica Niculina,
Röhrig Serge,
Rüdiger Andreas,
Brose Katharina,
Thomsen Christian,
Maultzsch Janina
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982278
Subject(s) - raman spectroscopy , materials science , characterization (materials science) , confocal , optics , spectroscopy , nanostructure , microscope , image resolution , raman microscope , optoelectronics , reflection (computer programming) , resolution (logic) , nanotechnology , raman scattering , physics , quantum mechanics , computer science , programming language , artificial intelligence
Tip‐enhanced Raman spectroscopy (TERS) is a high sensitivity and high spatial resolution analytical technique based on the strong field enhancement provided by a sharp metallic tip. Using a commercial atomic force microscope (AFM) combined with a confocal optical setup in reflection geometry, we are targeting samples on non‐transparent electrodes. The resulting design challenges with respect to quantum efficiency, optical accessibility of the tip and the optics themselves, were balanced and taken into consideration for the presented ultra‐high vacuum–TERS setup. Second, we describe the development of a TERS setup at normal pressure in air, and we present the confocal Raman and TERS spectra of dye molecules and other nanostructures.