Chemistry in motion reaction diffusion systems for micro and nanotechnology von bartosz a grzybowski michael ibele department of chemistry pennsylvania state university usa search for more papers by this author michael ibele. Although reaction and diffusion rd processes are essential for the functioning of biological systems there have been only a few examples of their application in modern micro and nanotechnology part of the problem has been that rd phenomena are hard to bring under experimental control especially when the systems dimensions are small. Although reaction and diffusion rd processes are essential for the functioning of biological systems there have been only a few examples of their application in modern micro and nanotechnology part of the problem has been that rd phenomena are hard to bring under experimental control especially when the systems dimensions are small. Although reaction and diffusion rd processes are essential for the functioning of biological systems there have been only a few examples of their application in modern micro and nanotechnology part of the problem has been that rd phenomena are hard to bring under experimental control especially when the systems dimensions are small. Topics covered include an overview and outlook of both biological and man made reaction diffusion systems the fundamentals and mathematics of diffusion and chemical reactions reaction diffusion equations and the methods of solving them spatial control of reaction diffusion at small scales micro and nanofabrication by reaction diffusion