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American Chemical Society's Weekly PressPac -- Jan. 7, 2009

es to power these tiny, robotic machines remains a major challenge, the researchers say.

The scientists describe a solution tiny beads, about 1/25,000 of an inch in diameter, made of plastic and magnetic materials. When exposed to a magnetic field, the particles spun like a gyroscope and could be easily directed to move though narrow channels of liquids inside a glass plate, the researchers say. The scientists could control the speed of the "microswimmers" by varying the strength of the magnetic field. MTS

"Magnetically Actuated Colloidal Microswimmers"


EDITOR'S NOTE: To view a video of the nanoswimmers in motion, click the following links: jp808354n_si_002.avi (220 KB) or jp808354n_si_006.mpg (604 KB)

Pietro Tierno, Ph.D.
University of Barcelona
Barcelona, Spain
Phone: 34934020138


Toward a long-sought saliva test for autism
Journal of Proteome Research

Researchers in Italy are reporting discovery of abnormal proteins in the saliva of autism patients that could eventually provide a clue for the molecular basis of this severe developmental disorder and could be used as a biomarker for a subgroup of patients with autism spectrum disorders (ASD). Their study is in the January 2 issue of ACS' Journal of Proteome Research, a monthly publication.

Autism involves social withdrawal, impaired emotional responses and communication

Contact: Michael Woods
American Chemical Society

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