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US 12,560,530 B2Granted
Visualization of sub-wavelength features
AssigneeThe Board of Trustees of the University of Illinois
InventorsLynford L. Goddard, Jinlong Zhu, Aditi Udupa
Life of this patent
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Abstract
Objects and/or grouped emitters are anti-symmetrically excited. The anti-symmetric radiation emitted by the objects generate an interference pattern with a node in the spacing between the objects. The spacing may be sub-wavelength and/or below a resolution limit for the emitted radiation. Samples within the spacing may be detected via distortion to the inference pattern and visualized (including sub-resolution limit features) either directly or through reconstruction analysis from the interference pattern.
Claims15
A device including:
- a substrate;
- grouped emitters disposed on the substrate;
- wherein:
- the substrate comprises a spacing between the grouped emitters, a width of the spacing is below a resolution limit of emitted radiation from the emitters;
- and
- a destructive interference area located within the spacing to create an electromagnetic canyon, wherein the grouped emitters are positioned to generate destructively interfering radiation within the destructive interference area when the grouped emitters are anisotropically excited, wherein:
- a first emitter of the grouped emitters is driven by excitation radiation with a first phase;
- and
- a second emitter of the grouped emitters is driven by the excitation radiation with a second phase different from the first phase.
6 more elements
A device including:
- a substrate;
- a first nanowire emitter disposed on the substrate;
- a second nanowire emitter disposed on the substrate, the second nanowire paired to the first nanowire;
- a spacing between the first and second nanowire emitters to receive a sample, wherein a width of the spacing is below a resolution limit of emitted radiation from the first and second nanowire emitters;
- and
- a destructive interference area located within the spacing to create an electromagnetic canyon,
- wherein the first and second nanowire emitters positioned to:
- when the first nanowire emitter is driven by excitation radiation having an anisotropic irradiation profile with a first phase, and the second nanowire emitter is driven by the excitation radiation with a second phase different from the first phase:
- generate destructively interfering radiation within the destructive interference area within the spacing when no sample is present and
- generate an interference pattern within the spacing when a sample is present within the spacing.
7 more elements
Dependencies are inferred from the claim text.