Featured Research

from universities, journals, and other organizations

Discovery could impact how the body receives medicine

Date:
October 9, 2010
Source:
Queen's University
Summary:
Researchers have discovered how molecules in glass or plastic are able to move when exposed to light from a laser. The findings could one day be used to facilitate medicinal drug distribution by allowing doctors to control the time and rate at which drugs are delivered into the body.

Queen's professor Jean-Michel Nunzi has discovered how molecules in a glass or plastic are able to move when exposed to light from a laser.
Credit: Image courtesy of Queen's University

Researchers at Queen's University have discovered how molecules in glass or plastic are able to move when exposed to light from a laser. The findings could one day be used to facilitate medicinal drug distribution by allowing doctors to control the time and rate at which drugs are delivered into the body. The drugs, in a solid plastic carrier, could be released through the body when exposed to light.

Related Articles


Lead researcher Jean-Michel Nunzi, a professor in the departments of Chemistry and Physics, has determined that "molecular cooperation" is what allows the molecules to move and shift.

"Glasses and plastics are mysterious materials. We knew how the molecules moved in a liquid, but we didn't know how they moved in a glass or plastic -- no one did," said Dr. Nunzi. "We discovered the way motion takes place at the molecular scale in a glass or plastic."

Dr. Nunzi compares the findings to cars in a crowded parking garage. If the garage is full of cars, without any space between them, then a car cannot move unless another one moves with it. The same can be said for molecules -- the light causes them to move slightly, but it is the cooperation with other molecules that enables them to move significantly.

When plastic is exposed to light from a laser, the molecules under the light move together, changing the shape of the solid material. The molecules that are not exposed to the light remain stable. The result is a dramatic change in the shape of the solid material that is visible to the naked eye.

The findings, published in the Journal of Chemical Physics, build on a study done at Queen's in 1995 that showed it was possible to make solid materials fluid, or movable, using light.

The work was done in collaboration with researchers at the Universite d'Angers in France.


Story Source:

The above story is based on materials provided by Queen's University. Note: Materials may be edited for content and length.


Cite This Page:

Queen's University. "Discovery could impact how the body receives medicine." ScienceDaily. ScienceDaily, 9 October 2010. <www.sciencedaily.com/releases/2010/10/101007111501.htm>.
Queen's University. (2010, October 9). Discovery could impact how the body receives medicine. ScienceDaily. Retrieved April 25, 2015 from www.sciencedaily.com/releases/2010/10/101007111501.htm
Queen's University. "Discovery could impact how the body receives medicine." ScienceDaily. www.sciencedaily.com/releases/2010/10/101007111501.htm (accessed April 25, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, April 25, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

85 Killed in Niger by Meningitis Since Start of Year

85 Killed in Niger by Meningitis Since Start of Year

AFP (Apr. 24, 2015) A meningitis outbreak in Niger has killed 85 people since the start of the year prompting authorities to close schools in the capital Niamey until Monday. Video provided by AFP
Powered by NewsLook.com
C-Section Births a Trend in Brazil

C-Section Births a Trend in Brazil

AFP (Apr. 24, 2015) More than half of Brazil&apos;s babies are born via cesarean section, as mothers and doctors opt for a faster and less painful experience despite the health risks. Duration: 02:02 Video provided by AFP
Powered by NewsLook.com
Anti-Malaria Jab Hope

Anti-Malaria Jab Hope

Reuters - News Video Online (Apr. 24, 2015) The world&apos;s first anti-malaria vaccine could get the go-ahead for use in Africa from October if approved by international regulators. Paul Chapman reports. Video provided by Reuters
Powered by NewsLook.com
3D Food Printing: The Meal of the Future?

3D Food Printing: The Meal of the Future?

AP (Apr. 23, 2015) Developers of 3D food printing hope the culinary technology will revolutionize the way we cook and eat. (April 23) Video provided by AP
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


Health & Medicine

Mind & Brain

Living & Well

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