This practical book is part of the new Artech House Methods in Bioengineering series - volumes designed to offer detailed guidance on authoritative methods for addressing specific bioengineering challenges. Written and edited by recognized experts in the field, each book provides research engineers, scientists, and students with step-by-step procedures, clear examples, and effective ways to overcome problems that may be encountered. At the dawn of the 21st century, microtechnology is changing the study of biology and the practice of medicine. This volume presents the science behind microscale device design and the engineering of its fabrication.