Nanostructures with anti-counterefeiting features and methods of fabricating the same
AssigneeRolith, Inc.
InventorBoris Kobrin
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Abstract
Embodiments of the invention relate to methods of anti-counterfeiting for nanostructures and nanostructured devices. Specifically we describe a method of embedding a coded micro- or nanopatterns in nanostructures fabricated using Near-field rolling mask lithography, where areas of such features can be embedded into a transparent cylindrical or conic frame, or fabricated on the surface of flexible film laminated on the surface of the frame. Alternatively, specific coded nanofeatures distribution can be created using modulation of intensity or wavelength of the light source along the width or length of such cylinder or cone, or modulation of flexible film thickness or contact pressure between the rotatable mask and a substrate.
Claims13
A method of fabricating nanostructures having anti-counterfeiting features comprising:
- a) providing a substrate having a radiation-sensitive layer on said substrate surface;
- b) providing a rotatable mask having a nanopattern on an exterior surface of said rotatable mask;
- c) providing a coded micro- or nanopattern in addition to said nanopattern of said rotatable mask
- d) contacting said nanopattern with said radiation-sensitive layer on said substrate surface;
- e) distributing radiation through said nanopattern, while rotating said rotatable mask over said radiation-sensitive layer, whereby a 2 sets of images are created in said radiation-sensitive layer, one is a main nanostructure image, and a second a coded anti-counterfeiting image
A method of fabricating nanostructures having anti-counterfeiting features comprising:
- a) providing a substrate having a radiation-sensitive layer on said substrate surface;
- b) contacting said nanopattern with said radiation-sensitive layer on said substrate surface;
- c) distributing radiation through said nanopattern, while rotating said rotatable mask over said radiation-sensitive layer,
Dependencies are inferred from the claim text.