Contents

18 October 2002
Vol 298, Issue 5593

About The Cover

Cover image expansion

COVER A microfluidic chip, fabricated from silicone elastomer, that contains 2056 integrated microvalves in an area of one square inch. The chip is analogous to an electronic comparator and is an example of microfluidic large-scale integration. The complex plumbing in the chip allows 512 chambers to be mixed pairwise, with individual addressing and recovery of the results. 580 [Photo: S. Maerkl]