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Engineering at All Scales
Innovation occurs at many scales. As they seek new ways to manage change, engineers are developing increasingly precise processes and ever-smaller devices—some measuring millionths or even billionths of a meter. The images below illustrate cutting-edge innovations that represent promising frontiers for engineering.  
Micro-hotplate Nanotubes
Micro-hotplate Nanotubes
Credit: Boston MicroSystems, Inc. Credit: Nanoscience and Technology Lab, Department of Mechanical Engineering, Northwestern University.
SEM was done at the Electron Probe Instrumentation Center, Northwestern University.