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Latest David A. Weitz Stories

Extracellular Matrix Identified As Source Of Spreading In Biofilms
2012-01-24 03:39:59

New research at Harvard explains how bacterial biofilms expand to form slimy mats on teeth, pipes, surgical instruments, and crops. Through experiment and mathematical analysis, researchers have shown that the extracellular matrix (ECM), a mesh of proteins and sugars that can form outside bacterial cells, creates osmotic pressure that forces biofilms to swell and spread. The ECM mechanism is so powerful that it can increase the radius of some biofilms five-fold within 24 hours. The...

2011-12-01 10:31:24

Experts gather this week to discuss the efficient creation and delivery of nanoscale particles of drugs From targeted cancer chemotherapy to the guarantee of successful organ transplants, the 21st century may prove to be the age of big ideas in medicine. The drugs themselves, though, will be minuscule. Experts in chemistry, applied physics, materials science, and pharmaceutical science are gathering this week for the BASF Advanced Research Initiative at Harvard University's symposium...

Cocktail Physics
2011-12-01 05:47:40

Ever wondered how your martini maintains its crisp and balanced taste, or why a manhattan remains clear if stirred but turns cloudy when shaken? In this month's edition of Physics World, Naveen Sinha and David Weitz from Harvard University reveal all, describing how some top-end bartenders are ditching trial and error for a more measured, controlled and scientific approach to the art of cocktail making. The authors explain how techniques borrowed from physics laboratories — such...

2009-11-04 14:37:45

Put new wrinkle in old approach Harvard materials scientists have come up with what they believe is a new way to model the formation of glasses, a type of amorphous solid that includes common window glass. Glasses form through the process of vitrification, in which a glass-forming liquid cools and slowly becomes a solid whose molecules, though they've stopped moving, are not permanently locked into a crystal structure. Instead, they're more like a liquid that has merely stopped flowing,...

2008-04-29 12:00:58

CAMBRIDGE, Mass. and LUDWIGSHAFEN, Germany, April 29 /PRNewswire/ -- BASF today announced the official launch of the BASF Advanced Research Initiative at Harvard University. The Advanced Research Initiative at Harvard University represents an innovative model for university-industry collaboration designed specifically to drive new frontiers of scientific discovery. The opening of the initiative was celebrated with an inaugural two-day Symposium on Biofilms held in Cambridge, Massachusetts....


Word of the Day
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.