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PNAS | April 16, 2002 | vol. 99 | no. 8 | 4769-4774
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Supramolecular Chemistry And Self-assembly Special Feature
Perspective
 Beyond molecules: Self-assembly of mesoscopic and macroscopic components

George M. Whitesides* and Mila Boncheva

Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138

Self-assembly is a process in which components, either separate or linked, spontaneously form ordered aggregates. Self-assembly can occur with components having sizes from the molecular to the macroscopic, provided that appropriate conditions are met. Although much of the work in self-assembly has focused on molecular components, many of the most interesting applications of self-assembling processes can be found at larger sizes (nanometers to micrometers). These larger systems also offer a level of control over the characteristics of the components and over the interactions among them that makes fundamental investigations especially tractable.

* To whom reprint requests should be addressed. E-mail: gwhitesides{at}gmwgroup.harvard.edu.

www.pnas.org/cgi/doi/10.1073/pnas.082065899
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