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Science News for April 7, 2002


'Bursting' polymer molecules being developed

Researchers at Virginia Tech are developing 'bursting' polymer molecules that can change their architecture in response to stimuli, offering potential solutions for drug delivery and novel wound dressings. The breakthroughs are driven by responsive groups on the ends of the polymer chain.

Forces active in self-assembly of novel molecules measured

Scientists have measured the constants describing self-assembly in the creation of a supramolecular assembly that can potentially important to the processing of many novel materials. Pseudorotaxanes are chemical compounds containing non-covalent linkages, and researchers have explored their possibilities and applications.

SourceVirginia Tech·JournalJournal of the American Chemical Society·DateApr 7, 2002

Brain center searches for patterns

Researchers discovered the brain region responsible for pattern perception, which helps humans recognize danger but also leads to superstitions. The prefrontal cortex processes information about the environment, preparing the organism to change behavior in response to patterns.

SourceDuke University·JournalNature Neuroscience·DateApr 7, 2002