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| Open AccessDiverse organic-mineral associations in Jezero crater, Mars
Raman and fluorescence spectra, consistent with several species of aromatic organic molecules, are reported in the Crater Floor sequences of Jezero crater, Mars, suggesting multiple mechanisms of organic synthesis, transport, or preservation.
- Sunanda Sharma
- , Ryan D. Roppel
- & Anastasia Yanchilina
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Letter |
Visualizing vibrational normal modes of a single molecule with atomically confined light
The vibrational normal modes in a single molecule are imaged using tip-enhanced Raman spectromicroscopy performed in the atomistic near-field.
- Joonhee Lee
- , Kevin T. Crampton
- & V. Ara Apkarian
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Letter |
Super-multiplex vibrational imaging
Stimulated Raman scattering under electronic pre-resonance conditions, combined with a new palette of probes, enables super-multiplex imaging of molecular targets in living cells with very high vibrational selectivity and sensitivity.
- Lu Wei
- , Zhixing Chen
- & Wei Min
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Letter |
Orbital-specific mapping of the ligand exchange dynamics of Fe(CO)5 in solution
Mapping the frontier-orbital interactions with atom specificity using X-ray laser-based femtosecond-resolution spectroscopy reveals that spin crossover and ligation determine the sub-picosecond excited-state dynamics of a transition-metal complex in solution.
- Ph. Wernet
- , K. Kunnus
- & A. Föhlisch
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Letter |
Coherent Raman spectro-imaging with laser frequency combs
A new multiplex technique of coherent anti-Stokes Raman spectro-imaging with two laser frequency combs is shown to record molecular spectra of broad bandwidth on a microsecond scale.
- Takuro Ideguchi
- , Simon Holzner
- & Theodor W. Hänsch
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Letter |
Shell-isolated nanoparticle-enhanced Raman spectroscopy
Surface-enhanced Raman scattering is a powerful spectroscopy technique that can be used to study substances down to the level of single molecules. But the practical applications have been limited by the need for metal substrates with roughened surfaces or in the form of nanoparticles. Here a new approach — shell-insulated nanoparticle-enhanced Raman spectroscopy — is described, and its versatility demonstrated with numerous test substances.
- Jian Feng Li
- , Yi Fan Huang
- & Zhong Qun Tian
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News & Views |
Expanding versatility
Gold nanoparticles coated with a thin layer of an oxide allow molecules adsorbed on surfaces as diverse as those of platinum, yeast cells or citrus fruits to be characterized routinely in the laboratory.
- Martin Moskovits