University of California

P James Schuck

Delia J Milliron

Hyuck Choo

Stefano Cabrini

Eli Yablonovitch

Deirdre Olynick

Martin Schmidt

Bruce E Cohen

Xiaogan Liang

Daniel J Gargas

Elan M Katz

Alexis D Ostrowski

Emory M Chan

Certain nanocrystals possess exceptional optical properties that may make them valuable probes for biological imaging, but rendering these nanoparticles biocompatible requires that they be small enough not to perturb cellular systems. This invention describes a phosphorescent upconverting sub-10 nm nanoparticle comprising a lanthanide-doped hexagonal &#x3b2;-phase NaYFnanocrystal and methods for making the same.

Controlled synthesis of bright and compatible lanthanide-doped upconverting nanocrystals

The present invention provides a plasmonic optical transformer to produce a highly focuses optical beam spot, where the transformer includes a first metal layer, a dielectric layer formed on the first metal layer, and a second metal layer formed on the dielectric layer, where the first metal layer, the dielectric layer, and the second layer are patterned to a shape including a first section having a first cross section, a second section following the first section having a cross-section tapering from the first section to a smaller cross-section, and a third section following the second section having a cross-section matching the tapered smaller cross-section of the second section.

Nano-fabricated plasmonic optical transformer

A novel approach to dry development of exposed photo resist is described in which a photo resist layer is exposed to a visible light source in order to remove the resist in the areas of exposure. The class of compounds used as the resist material, under the influence of the light source, undergoes a chemical/structural change such that the modified material becomes volatile and is thus removed from the resist surface. The exposure process is carried out for a time sufficient to ablate the exposed resist layer down to the layer below. A group of compounds found to be useful in this process includes aromatic calixarenes.

Lithographic dry development using optical absorption

Growing community of inventors

Berkeley, CA, United States of America

P James Schuck