Super-resolution in label-free photomodulated reflectivity.
Nano Lett
; 15(2): 1362-7, 2015 Feb 11.
Article
in En
| MEDLINE
| ID: mdl-25603405
ABSTRACT
We demonstrate a new, label-free, far-field super-resolution method based on an ultrafast pump-probe scheme oriented toward nanomaterial imaging. A focused pump laser excites a diffraction-limited spatial temperature profile, and the nonlinear changes in reflectance are probed. Enhanced spatial resolution is demonstrated with nanofabricated silicon and vanadium dioxide nanostructures. Using an air objective, resolution of 105 nm was achieved, well beyond the diffraction limit for the pump and probe beams and offering a novel kind of dedicated nanoscopy for materials.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Photochemistry
/
Nanostructures
Language:
En
Journal:
Nano Lett
Year:
2015
Document type:
Article
Affiliation country: