Navigation Links
American Chemical Society's highest honor goes to pioneer in 'ultraslow-motion' imaging
Date:7/27/2010

WASHINGTON, July 27, 2010 Ahmed H. Zewail, Ph.D., 1999 Chemistry Nobel Laureate and Linus Pauling Professor of Chemistry & Professor of Physics at the California Institute of Technology, has been named winner of the 2011 Priestley Medal by the American Chemical Society (ACS).

The award recognizes Zewail's revolutionary methods for developing "ultraslow-motion" imaging for the study of ultrafast processes in chemistry, biology and materials science. His work is providing deep new insights into materials behavior and biological processes that determine health and disease. The annual award, the highest honor bestowed by ACS, consists of a gold medallion designed to commemorate the work of Joseph Priestley as well as a presentation box and a certificate.

"This work is changing not only what we know, but also how we think about the interplay of structure, dynamics and function in molecular systems," said David A. Tirrell, Ph.D., a Caltech professor and former chair of the Division of Chemistry and Chemical Engineering. Tirrell adds that the advances made by Zewail's group "are yielding qualitatively new insights into the atomic and molecular origins of complex chemical, physical, and biological behavior."

Zewail pioneered femtochemistry, the study of ultrafast chemical processes on the femtosecond timescale using special lasers. A femtosecond is one quadrillionth of a second, or one millionth of one billionth of a second. Some have described his pioneering laser technique as the world's fastest camera. It can capture frames of the ultrafast motion of atoms and molecules as they undergo the reactions that produce gasoline, plastics, medicines and the processes that make life possible. Just as "slow motion" replays in football and other sports capture the details of fast-paced motion, Zewail's "ultrafast camera" captures the complex details of reactions as they occur.

For hundreds of years, scientists believed it was impossible to view the ultrafast motion of chemical reactions. But Zewail thought otherwise. In the late 1980s, he performed a series of experiments that provided the first detailed glimpses of chemical reactions in motion. He did this using a high-speed "camera," based on laser technology, with flashes of light that each lasted only some millionth of a billionth of a second. This allowed him to "freeze" the motion of molecules as they reacted with each other, much like rapid flashes of light freeze the motion of a spinning fan blade. For the first time, scientists could actually see chemical reactions as they unfolded.

Since the Nobel Prize, he and his group have developed a new field dubbed four-dimensional (4D) electron microscopy. The methodology enables visualization of materials and biological cells with unprecedented resolutions in both space and time. In recent Science and Nature papers, Zewail and colleagues reported the achievement of 4D tomography and near-field imaging and demonstrated the methodology for visualization of "nanomachines" at work and evanescent bacterium cells. The development is termed by scientists in the field as revolutionary for materials and biological sciences.

Zewail was born in 1946 in Egypt. He studied at the University of Alexandria and earned a Ph.D. in 1974 from the University of Pennsylvania. After two years at the University of California at Berkeley, he was employed at Caltech, where he currently is a chair professor and director of the Physical Biology Center.

He also serves as a dedicated spokesman for science education. He is a member of President Obama's Council of Advisors on Science & Technology. Zewail travels the world lecturing on what he describes as "the beauty and critical role of science in our lives."

The Priestley Medal is an annual award named for Joseph Preistley, who reported the discovery of oxygen in 1774. Since 1923, the ACS has recognized groundbreaking chemists with the award.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert  

Related medicine news :

1. Special news media briefing and reception during American Chemical Society national meeting
2. Disparities remain a challenge in health care says American College of Physicians
3. Americans With Disabilities Act Reaches 20th Anniversary
4. Investigators identify gene associated with kidney disease in African-American population
5. Patient safety highlights American Association of Physicists in Medicine
6. Brooding Russians: Less distressed than Americans
7. 3 former Latin American presidents sign Vienna Declaration, join global call to action for science-based drug policy reform
8. Haiti: United Nations Gets a Helping Hand from American Idol Viewers
9. Phoenix Dentist Joseph R. Cohen, D.D.S., is Chosen by The American Dental Association's Commission on Dental Accreditation as Site Visitor.
10. Overwhelming Number of Americans Concerned About Their Weight
11. DrFinders Cites the American College of Allergy, Asthma & Immunology's Projections of Allergists
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
American Chemical Society's highest honor goes to pioneer in 'ultraslow-motion' imaging
(Date:10/13/2017)... ... October 13, 2017 , ... “America On The Brink”: the Christian history of ... Brink” is the creation of published author, William Nowers. Captain Nowers and his ... veteran, he spent thirty years in the Navy. Following his career as a ...
(Date:10/12/2017)... WAUSAU, Wis. (PRWEB) , ... October 12, 2017 ... ... formulated standard products to meet the demand of today’s consumer and regulatory authorities ... team of probiotic experts and tested to meet the highest standard. , ...
(Date:10/12/2017)... ... October 12, 2017 , ... Information about the technology: ... develop to enable prevention of a major side effect of chemotherapy in children. ... pediatric patients. For cisplatin, hearing loss is FDA listed on-label as a dose ...
(Date:10/12/2017)... Chapel, FL (PRWEB) , ... October 12, 2017 , ... ... is holding a treadmill relay – Miles by Moonlight to raise money for the ... donating $300 or more. , Teams will work together to keep their treadmills ...
(Date:10/12/2017)... ... October 12, 2017 , ... Vohra Chief Medical Officer Dr. ... colleagues, skilled nursing facility medical directors and other clinicians at various events in ... , "At many of these conferences we get to educate other physicians, facility ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)... , Oct. 12, 2017 West Pharmaceutical ... innovative solutions for injectable drug administration, today announced that ... market opens on Thursday, October 26, 2017, and will ... and business expectations at 9:00 a.m. Eastern Time. To ... 253-336-8738 (International). The conference ID is 94093362. ...
(Date:10/11/2017)... 11, 2017  True Health, a leader in ... effort during National Breast Cancer Awareness month to ... Research recently ... that more than 10 million American women are ... BRCA1 or BRCA2 and have not had testing. These ...
(Date:10/10/2017)... Oct. 10, 2017   West Pharmaceutical Services, Inc. ... for injectable drug administration, today shared the results of ... for improving the intradermal administration of polio vaccines. The ... Summit in May 2017 by Dr. Ondrej Mach ... World Health Organization (WHO), and recently published in the ...
Breaking Medicine Technology: