‘Doughnut’ beams help physicists see incredibly small objects

A new laser-based technique can create images of structures too tiny to view with traditional microscopes, and without damaging them. The approach could help scientists inspect nanoelectronics, including the semiconductors in computer chips.

​A new laser-based technique can create images of structures too tiny to view with traditional microscopes, and without damaging them. The approach could help scientists inspect nanoelectronics, including the semiconductors in computer chips. A new laser-based technique can create images of structures too tiny to view with traditional microscopes, and without damaging them. The approach could help scientists inspect nanoelectronics, including the semiconductors in computer chips. 

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