This Special Issue contains selected papers presented at the Advances in Micro- and Nano-Manufacturing—Kornel Ehmann Symposium at 2020 ASME International Manufacturing Science and Engineering Conference (MSEC). The symposium was cosponsored by the SME North American Manufacturing Research Institution (NAMRI). This symposium is dedicated to Prof. Kornel F. Ehmann for his visionary leadership and profound impact on the field.

Micro- and nano-scale manufacturing is gaining more attention due to production miniaturization and customization. High precision and product quality are difficult to achieve at this length scale; thus, a deeper understanding of the processes, development of characterization methods, modeling and simulations, and monitoring are required for the improvement of product quality. This collection of papers presents the latest advances in micro- and nano-manufacturing technologies that enhance both theoretical and experimental understandings, as well as bring application-oriented innovations.

The collection of papers covers an array of microprocesses, including micro-machining, molding, forming, extrusion, and additive processes. The most represented one is still the subtractive process, but the dominant material removal mechanisms are diversely distributed, including traditional tool-based milling, electrical discharge machining (EDM), electrical chemical machining (ECM), laser machining, etc. New theoretical understandings of process mechanics and material responses at the microscale have been provided through advanced simulation techniques (molecular dynamic simulation) and new experimental tools (X-ray imaging). The findings reveal the unique phenomenon of microstructural evolution, energy consumption, material hardening during micro-manufacturing processes. Some interesting applications have also been demonstrated to highlight the innovations in micromanufacturing. Particularly, structural colorization was achieved through nonisothermal precision glass molding. Microelectrode arrays were sharpened by laser machining for brain recording. Optical fiber sensors were fabricated by laser ablation.

The Guest Editor would like to thank the authors for their contributions and prompt efforts in preparing their papers, as well as the reviewers for their timely assistance. Special thanks also go to the co-organizers of the Advances in Micro- and Nano-Manufacturing Symposium, Dr. Martin Jun from Purdue University, and Dr. Chandra Nath from Maijker Corp. The symposium has attracted the highest number of submissions among all symposiums at the 2020 MSEC and won the Best Organizer of Symposium & Sessions Award. Finally, we thank the ASME Journal of Micro- and Nano-Manufacturing Editor, the Editorial Office, and the ASME Production Team for their encouragement and assistance during the preparation of this Special Issue.