Princeton University

Other

Wendi Li

Stephen Y Chou

Can Peng

Shufeng Bai

Microstructures and nanostructures () consisting of a substrate (), an array of pillars () capped by metallic disc (), metallic dots (clusters or granules) () disposed on the sidewalls of the pillars, and a metallic backplane () that can interact to enhance a local electric field, the absorption of the light, and the radiation of the light are disclosed. Methods to fabricate the structures () are also disclosed. Applications of the structures to enhance the optical signals in the detection of molecules and other materials on a structure surface, such as fluorescence, photoluminescence and surface enhanced Raman Scattering (SERS) are also disclosed.

Structures for enhancement of local electric field, light absorption, light radiation, material detection and methods for making and using of the same

Nanostructure device that enhances fluorescence and luminescence

This invention relates to the fabrication of large area nanoimprint molds having complex patterns with minimal or no use of direct-writing, such as electron beam lithography, ion, laser beam, or mechanical beam lithography. This can be accomplished by forming a pattern of simple nanoscale features and converting the simple features into more complex nanoscale features by a process comprising shadow deposition. The process may also include steps of uniform deposition, etching and smoothing depending on the shape of the complex features.

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Mountain View, CA, United States of America

Wendi Li