Papers in this volume are from the 199th ECS Meeting, held in Washington, DC, Spring 2001. Morphology evolution encompasses electrochemical processing in ULSI fabrication, shape evolution, growth habit, and microstructure of electrodeposits. The most prominent example at present is the electrochemical deposition of copper for ULSI interconnects. Many other electrochemical processes at various stages of emergence and development hold promise for the electronics industry and beyond.

"Held May 2000 in Toronto, Canada, as part of the 197th meeting of the Electrochemical Society."--Pref.

The papers included in this issue of ECS Transactions were originally presented in the symposium ¿Electrochemical Processing in ULSI and MEMS 4¿, held during the 215th meeting of The Electrochemical Society, in San Francisco, CA from May 24 to 29, 2009.