George Orji is a project leader at the Microsystems and Nanotechnology Division of the National Institute of Standards and Technology (NIST), where he works on nanoscale dimensional metrology and standards development. He received his PhD in mechanical engineering from the University of North Carolina at Charlotte. His current research interests are measurement methods development, traceability methods and uncertainty analysis for nanoscale dimensional metrology. He is a subject matter expert and delegate to the ISO Technical Committee on Surface Chemical Analysis – Scanning Probe Microscopy – TC 201-SC 9; and Chair of the Metrology Focus Team of the IEEE-International Roadmap for Devices and Systems (IRDS). He is a Senior Member of both IEEE and SPIE, and a member of the American Society for Precision Engineering (ASPE).