Sensitive detection of molecules

Versuchsaufbau im Labor MPQ / Thorsten Naeser

To observe molecules, one has to use sensitive tools. Such measurements would be important for determining the concentration of minute particles in blood samples or during neuronal information transfer in the brain.

A team of Max Planck scientists has taken a decisive step in this direction – they recently published their results in the journal Science Advances.

Hanieh Fattahi is a research group leader at the Max Planck Institute for the Science of Light. In a research project with her team from the Max Planck Institute of Quantum Optics in Garching, Germany, she has succeeded to develop a sensitive instrument to measure concentration of molecules.

When near-infrared light interacts with molecules, it causes them to vibrate. The vibrating molecules emit coherent light at highly characteristic wavelengths. The new technology uses femtosecond pulses (an inconceivably short time unit of 10⁻¹⁵ seconds) to detect these emitted wavelengths by molecules.

Molecular vibrations in the femtosecond range

As a first demonstration, the researchers used their laser source to study water molecules. “For the first time, we were able to detect the complex electric field of light absorbed by water molecules in the near infrared spectral range,” Fattahi says.

Based on these results, Hanieh Fattahi expects to use the developed laser architecture to perform spectroscopic analyses of molecular vibrations in the femtosecond range and how to apply this technique to imaging.

Dr. Hanieh Fattahi,

Media Contact

Clarissa Grygier Max-Planck-Institut für die Physik des Lichts

Weitere Informationen:

Alle Nachrichten aus der Kategorie: Physics and Astronomy

This area deals with the fundamental laws and building blocks of nature and how they interact, the properties and the behavior of matter, and research into space and time and their structures.

innovations-report provides in-depth reports and articles on subjects such as astrophysics, laser technologies, nuclear, quantum, particle and solid-state physics, nanotechnologies, planetary research and findings (Mars, Venus) and developments related to the Hubble Telescope.

Zurück zur Startseite

Kommentare (0)

Schreib Kommentar

Neueste Beiträge

Who stole the light?

Self-induced ultrafast demagnetization limits the amount of light diffracted from magnetic samples at soft x-ray energies. Free electron X-ray lasers deliver intense ultrashort pulses of x-rays, which can be used…

Could breadfruit be the next superfood?

UBC researchers say yes Breadfruit is sustainable, environmentally friendly and a high-production crop. A fruit used for centuries in countries around the world is getting the nutritional thumbs-up from a…

New calculation refines comparison of matter with antimatter

Theorists publish improved prediction for the tiny difference in kaon decays observed by experiments. -An international collaboration of theoretical physicists–including scientists from the U.S. Department of Energy’s (DOE) Brookhaven National…

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.