Featured Research

from universities, journals, and other organizations

Carbon nanotubes for molecular magnetic resonances

Date:
June 9, 2013
Source:
ICFO-The Institute of Photonic Sciences
Summary:
Researchers have developed a new technique for measuring very weak forces on a molecular scale. Thanks to the use of carbon nanotubes, they have achieved the highest level of sensitivity to date. These results open the door for magnetic resonance imaging of individual molecules.

These ICFO researchers are: Adrian Bachtold, Joel Moser, Johannes Gόttinger.
Credit: ICFO

More resistant than steel, carbon nanotubes are one of the strongest and hardest materials known. Their impressive electrical and thermal properties make them an extremely versatile material. Hollow on the inside and only one-atom thick, they lend themselves to a large variety of potential uses, from tennis rackets and bulletproof vests, to electronic components and energy storage devices. New research shows that they may also hold the potential for revolutionizing medical research with magnetic resonance imaging of individual molecules.

Scientists from ICFO- Institute of Photonic Science, in collaboration with researchers from the Catalan Institute of Nanotechnology (ICN2) and the University of Michigan, have been able to measure weak forces with sensitivity 50 times higher than what has been achieved to date. This significant improvement represents a turning point in measuring very weak forces and opens the door for magnetic resonance imaging at the molecular scale. Dr. Adrian Bachtold, who began this research at the Catalan Institute of Nanotechnology before transferring his research group to ICFO, explains in an article published in Nature Nanotechnology that they were able to prepare the carbon nanotubes to act as probes that vibrate with an intensity proportional to an electrostatic force. With the use of ultra-low-noise electronics, the group led by Bachtold was able to measure the amplitude of the vibration of these nanotubes and thus surmise the intensity of the electrostatic force.

"Carbon nanotubes are similar to guitar strings which vibrate in response to the force applied. However, in the case of our experiment, the forces that cause the vibration are extremely small, similar to the gravitational force created between two people 4500 km apart," explains Bachtold. In the last ten years scientists have made only modest improvements in the sensitivity of the measurement of very weak forces. This new discovery marks a before and after and points to carbon nanotubes playing an important role in future technologies for MRIs of individual molecules.

Conventional magnetic resonance imaging registers the spin of atomic nuclei throughout our bodies which have been previously excited by an external electromagnetic field. Based on the global response of all atoms, it is possible to monitor and diagnose the evolution of certain diseases. However, this conventional diagnostic technique has a resolution of a few millimeters. Smaller objects have an insufficient total number of atoms to allow for the observation of the response signals.

"The results presented are very promising for measuring the force created by each individual atom and consequently its spin. In the future this technique could revolutionize medical imaging" concludes Bachtold.


Story Source:

The above story is based on materials provided by ICFO-The Institute of Photonic Sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. J. Moser, J. Gόttinger, A. Eichler, M. J. Esplandiu, D. E. Liu, M. I. Dykman, A. Bachtold. Ultrasensitive force detection with a nanotube mechanical resonator. Nature Nanotechnology, 2013; DOI: 10.1038/NNANO.2013.97

Cite This Page:

ICFO-The Institute of Photonic Sciences. "Carbon nanotubes for molecular magnetic resonances." ScienceDaily. ScienceDaily, 9 June 2013. <www.sciencedaily.com/releases/2013/06/130609195707.htm>.
ICFO-The Institute of Photonic Sciences. (2013, June 9). Carbon nanotubes for molecular magnetic resonances. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2013/06/130609195707.htm
ICFO-The Institute of Photonic Sciences. "Carbon nanotubes for molecular magnetic resonances." ScienceDaily. www.sciencedaily.com/releases/2013/06/130609195707.htm (accessed July 22, 2014).

Share This




More Matter & Energy News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Government Approves East Coast Oil Exploration

Government Approves East Coast Oil Exploration

AP (July 18, 2014) — The Obama administration approved the use of sonic cannons to discover deposits under the ocean floor by shooting sound waves 100 times louder than a jet engine through waters shared by endangered whales and turtles. (July 18) Video provided by AP
Powered by NewsLook.com
Sunken German U-Boat Clearly Visible For First Time

Sunken German U-Boat Clearly Visible For First Time

Newsy (July 18, 2014) — The wreckage of the German submarine U-166 has become clearly visible for the first time since it was discovered in 2001. Video provided by Newsy
Powered by NewsLook.com
Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Reuters - US Online Video (July 17, 2014) — President Barak Obama stopped by at a lunch counter in Delaware before making remarks about boosting the nation's infrastructure. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

TheStreet (July 16, 2014) — Oil Futures are bouncing back after tumbling below $100 a barrel for the first time since May yesterday. Jeff Grossman is the president of BRG Brokerage and trades at the NYMEX. Grossman tells TheStreet the Middle East is always a concern for oil traders. Oil prices were pushed down in recent weeks on Libya increasing its production. Supply disruptions in Iraq fading also contributed to prices falling. News from China's economic front showing a growth for the second quarter also calmed fears on its slowdown. Jeff Grossman talks to TheStreet's Susannah Lee on this and more on the Energy Department's Energy Information Administration (EIA) report. Video provided by TheStreet
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:
from the past week

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