Single-Molecule Resonance Raman Spectroscopy

Single-molecule surface-enhanced Raman spectroscopy.

A general overview of the field of single-molecule (SM) surface-enhanced Raman spectroscopy (SERS) as it stands today is provided. After years of debates on the basic aspects of SM-SERS, the technique is emerging as a well-established subfield of spectroscopy and SERS. SM-SERS is allowing the observation of subtle spectroscopic phenomena that were not hitherto accessible. Examples of the latter...

Single-molecule surface-enhanced Raman spectroscopy with nanowatt excitation.

We demonstrate the possibility of single molecule (SM) detection via surface-enhanced Raman spectroscopy (SERS) in two seemingly challenging and unexpected cases: first with ultra-low excitation powers of the order of nanowatts and second in as-synthesized and not deliberately-aggregated silver colloid solution. The experiments are carried out using the bi-analyte method on a methylated form of...

Comment on ”Scanning-probe Raman spectroscopy with single molecule sensitivity”

We reinterpret the scanning-probe Raman spectra shown in the above paper [C.C. Neacsu et al., Phys. Rev. B 73, 193406 (2006)] and compare it to a variety of single-molecule surface-enhanced Raman (SER) studies. The observed blinking behaviour and spectral features must be attributed to carbon contaminations rather than to Malachite Green (MG) single molecules, because, under the given experimen...

Resonance Raman Spectroscopy of Single-Walled Carbon Nanotubes

The unusual one-dimensional properties of phonons in crystalline arrays of carbon nanotubes is presented. The main technique for probing the phonon spectra is Raman spectroscopy and the many unique and unusual features of the Raman spectra of carbon nanotubes are highlighted. Various features of the first-order Raman spectra are emphasized, with regard to their 1D behavior and special character...

2.1 Resonance Raman spectroscopy…………………………………………………..10