3. Breaking through the theoretical barrier

3.1 1928, just a thought...

How to recover this confined light, containing such precious information? This question has long occupied the minds of researchers, and it wasn't until 1928 that a scientist named E. H. Synge proposed the beginnings of an answer. Unable to build a detector small enough to be placed in the optical near-field, Synge came up with the idea of placing a scattering nano-object (a gold particle) in the detector, whose role would be to scatter the evanescent waves, making them detectable in the far-field. Then,...