Featured Research

from universities, journals, and other organizations

Rotating light provides indirect look into the nucleus

Date:
December 1, 2010
Source:
American Institute of Physics
Summary:
Nuclear magnetic resonance is one of the best tools for gaining insight into the structure and dynamics of molecules and how they behave in a variety of chemical environments. Now researchers have described an alternative way to get this information, by using light to observe nuclei indirectly via the orbiting electrons.

Nuclear magnetic resonance (NMR) is one of the best tools for gaining insight into the structure and dynamics of molecules because nuclei in atoms within molecules will behave differently in a variety of chemical environments. Nuclei can be thought of as tiny compasses that align when placed in the field of a strong magnet. Similar to magnetic resonance imaging (MRI), conventional NMR uses short pulses of radio waves to drive nuclei away from equilibrium and a 'signal' emerges as nuclei slowly realign with the field.

Related Articles


Results reported in The Journal of Chemical Physics introduce an alternative path to this information, by using light to observe nuclei indirectly via the orbiting electrons.

"We are not looking at a way to replace the conventional technique but there are a number of applications in which optical detection could provide complementary information," says author Carlos Meriles of the City University of New York.

The new technique is based on Optical Faraday Rotation (OFR), a phenomenon in which the plane of linearly polarized light rotates upon crossing a material immersed in a magnetic field. When nuclei are sufficiently polarized, the extra magnetic field they produce is 'felt' by the electrons in the sample thus leading to Faraday rotation of their own. Because the interaction between electrons and nuclei depends on the local molecular structure, OFR-detected NMR spectroscopy provides complementary information to conventional detection.

Another interesting facet of the technique is that, unlike conventional NMR, the signal response is proportional to the sample length, but not its volume. "Although we have not yet demonstrated it, our calculations show that we could magnify the signal by creating a very long optical path in a short, thin tube," Meriles says. This signal magnification would use mirrors at both ends of a channel in a microfluidics device to reflect laser light repeatedly through the sample, increasing the signal amplitude with each pass.


Story Source:

The above story is based on materials provided by American Institute of Physics. Note: Materials may be edited for content and length.


Journal Reference:

  1. Daniela Pagliero, Wei Dong, Dimitris Sakellariou, Carlos A. Meriles. Time-resolved, optically detected NMR of fluids at high magnetic field. The Journal of Chemical Physics, 2010; 133 (15): 154505 DOI: 10.1063/1.3502484

Cite This Page:

American Institute of Physics. "Rotating light provides indirect look into the nucleus." ScienceDaily. ScienceDaily, 1 December 2010. <www.sciencedaily.com/releases/2010/11/101130100359.htm>.
American Institute of Physics. (2010, December 1). Rotating light provides indirect look into the nucleus. ScienceDaily. Retrieved March 31, 2015 from www.sciencedaily.com/releases/2010/11/101130100359.htm
American Institute of Physics. "Rotating light provides indirect look into the nucleus." ScienceDaily. www.sciencedaily.com/releases/2010/11/101130100359.htm (accessed March 31, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Tuesday, March 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Bionic Ants Could Be Tomorrow's Factory Workers

Bionic Ants Could Be Tomorrow's Factory Workers

Reuters - Innovations Video Online (Mar. 30, 2015) — Industrious 3D printed bionic ants working together could toil in the factories of the future, says German technology company Festo. The robotic insects cooperate and coordinate their actions and movements to achieve a common aim. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com
You Won't Be Driving Tesla's Mystery Product

You Won't Be Driving Tesla's Mystery Product

Newsy (Mar. 30, 2015) — Tesla CEO Elon Musk announced a new product line will debut April 30, but it&apos;s not a car. Video provided by Newsy
Powered by NewsLook.com
Solar Impulse Departs Myanmar for China

Solar Impulse Departs Myanmar for China

AFP (Mar. 30, 2015) — Solar Impulse 2 takes off from Myanmar&apos;s second biggest city of Mandalay and heads for China&apos;s Chongqing, the fifth flight of a landmark journey to circumnavigate the globe powered solely by the sun. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Internet Giants Drive Into the Electric Vehicle Space

Internet Giants Drive Into the Electric Vehicle Space

Reuters - Business Video Online (Mar. 30, 2015) — Internet companies are looking to disrupt the auto industry with new smart e-vehicles, but widespread adoption in Asia may not be cured by new Chinese investments. Pamela Ambler reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins