Patent ID: 9703211
Date: 2017-07-11
CPC Classifications: G03F

Claim:
1. A method for sub-diffraction-limited patterning using a photoswitchable layer, the method comprising: selectively exposing a sample of the photoswitchable layer to a first wavelength of illumination that includes a super-oscillatory peak, wherein a region in the sample that corresponds to the super-oscillatory peak is converted from a first transition state to a second transition state, wherein selected regions in the sample that do not correspond to the super-oscillatory peak are converted from the first transition state to the second transition state; selectively exposing the sample to a second wavelength of illumination that does not include the super-oscillatory peak, wherein the selected regions in the sample are converted back to the first transition state and the region in the sample that corresponds to the super-oscillatory peak remains in the second transition state.