THZ tagged posts

Superlensing Without a Super Lens: Physicists Boost Microscopes beyond limits

Scientists used a new superlens technique to view an object just 0.15 millimetres wide using a virtual post-observation technique. The object ‘THZ’ (representing the ‘terahertz’ frequency of light used) is displayed with initial optical measurement (top right); after normal lensing (bottom left); and after superlensing (bottom right).

Ever since Antonie van Leeuwenhoek discovered the world of bacteria through a microscope in the late seventeenth century, humans have tried to look deeper into the world of the infinitesimally small.

There are, however, physical limits to how closely we can examine an object using traditional optical methods. This is known as the diffraction limit and is determined by the fact that light manifests as a wave...

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