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Team tracks real-time molecular motions

Team tracks real-time molecular motions
chemeurope.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from chemeurope.com Daily Mail and Mail on Sunday newspapers.

Heinrich Schwoerer , Mariana Rossi , Ralph Ernstorfer , Max Planck Institute For The Structure , Fritz Haber Institute , Sciences Advances , Max Planck Institute , Experimental Physics , Sebastian Hammer , மரியானா ரோஸி , ஃப்ரிட்ஸ் ஹேபர் நிறுவனம் , சோதனை இயற்பியல் ,

Atomic point contact significantly enhances Raman scattering


Atomic point contact significantly enhances Raman scattering
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New research shows that allowing the atomic point of a tip-enhanced Raman spectrometer to touch the surface of a sample increases sensitivity.
Researchers have discovered a huge enhancement of Raman scattering mediated by the formation of an atomic point contact between a plasmonic silver tip and a Si(111)-7×7 reconstructed surface. This state-of-the-art low-temperature tip-enhanced Raman spectroscopy (TERS) allows scientists to conduct atomic-scale vibrational spectroscopy. The developers suggest this technique could pave the way for exploring atomic-scale light-matter interactions, leading to a new discipline in light science and technology.
According to researchers, the rapid advancement of nanoscience and nanotechnology now requires atomic-scale optical spectroscopy to characterise its atomic-scale structures and defects in detail. TERS has demonstrated the exceptional sensitivity required to obser ....

Takashi Kumagai , Fritz Haber Institute , Institute For Molecular Science , Molecular Science , தகாஷி குமகை , ஃப்ரிட்ஸ் ஹேபர் நிறுவனம் , நிறுவனம் க்கு மூலக்கூறு அறிவியல் , மூலக்கூறு அறிவியல் ,

Atomic Point Contact Considerably Enhances Raman Scattering at Nanoscale


Atomic Point Contact Considerably Enhances Raman Scattering at Nanoscale
Today, nanofabrication of electronic systems has reached a 1 nm scale (10

9
m). The quick development of nanotechnology and nanoscience currently needs atomic-scale optical spectroscopy to define atomistic structures that will influence the functions and properties of the electronic devices.
(a) Illustration of the experiment. (b) Scanning electron micrograph of an Ag tip (top) and scanning tunneling microscopy image of the Si(111)-7×7 surface. (c) Atomic point contact Raman spectra. Image Credit: National Institutes of Natural Sciences.
The international research team, led by Takashi Kumagai from the Institute for Molecular Science, observed a massive improvement of Raman scattering facilitated by the development of an atomic point contact between a Si(111)-7×7 reconstructed surface and a plasmonic silver tip. This was realized using advanced low-temperature tip-enhanced Raman ....

Takashi Kumagai , National Institutes Of Natural Sciences , Fritz Haber Institute , Institute For Molecular Science , National Institutes , Molecular Science , Atomic Point Contact Raman Spectroscopy , தகாஷி குமகை , தேசிய நிறுவனங்கள் ஆஃப் இயற்கை அறிவியல் , ஃப்ரிட்ஸ் ஹேபர் நிறுவனம் , நிறுவனம் க்கு மூலக்கூறு அறிவியல் , தேசிய நிறுவனங்கள் , மூலக்கூறு அறிவியல் ,