I would personally like to thank all the reviewers of this special section for their timely support in reviewing the articles for JM3. I also want to thank all the authors and coauthors of this section for their interest in publishing their valuable research efforts in this special section. I want to thank Dr. Burn J. Lin, Editor-in-Chief of JM3, Dr. Thomas Suleski, senior editor, and Dr. Ed Motamedi, senior editor, for providing me with the opportunity to act as the guest editor of this special section. Finally, my deep gratitude is directed to Karolyn Labes, Felicia Andreotta, Rebecca Saxton, Brenda McDonald, and others from the SPIE journals staff for their kind support and assistance in organizing this special section.