University of California

Leland Stanford Junior University

Other

Nant Holdingsip, LLC

Hypersolar, Inc.

Martin Moskovits

Seung Joon Lee

Juan G Santiago

Carl D Meinhart

Brian Piorek

Sanjoy Banerjee

Thomas Tombler

Robert Koefer

Noel C MacDonald

Eric W McFarland

Linh Hong Nguyen

Cyrus R Safinya

Xu Zhang

Qihong Wu

Tim Young

Syed Mubeen Jawahar Hussaini

Ioana Pavel

Zuruzi Abu Samah

Marcus Ward

Andrei Kolmakov

Joun Lee

Provided are methods, devices and systems that utilize free-surface fluidics and SERS for analyte detection with high sensitivity and specificity. The molecules can be airborne agents, including but not limited to explosives, narcotics, hazardous chemicals, or other chemical species. The free-surface fluidic architecture is created using an open microchannel, and exhibits a large surface to volume ratio. The free-surface fluidic interface can filter interferent molecules, while concentrating airborne analyte molecules. The microchannel flow enables controlled aggregation of SERS-active probe particles in the flow, thereby enhancing the detector's sensitivity.

Device and methods of detection of airborne agents

A multi-junction artificial photosynthetic unit includes an active element with a plurality of semiconducting layers, with metal layers deposited between the semiconductor layers appropriately forming Schottky barrier junctions or ohmic junctions with a surface of an adjacent semiconductor layer. The active element is formed within a protective structure formed of porous aluminum oxide. Successive layers of the active element can be formed within the protective structure, and additional layers and junctions can be added until desired photovoltages are achieved. A photoreactor for the production of fuels and chemicals driven by solar-powered redox reactions includes a bag reactor filled with a feedstock solution. A plurality of multi-junction photosynthetic units are placed in the feedstock solution to drive the redox reactions and produce the desired fuels and chemicals.

Multi-junction artificial photosynthetic cell with enhanced photovoltages

Manufacturing a surface enhanced Raman spectroscopy (SERS) active structure includes exposing a substrate to produce an exposure pattern then etching the substrate based on the exposure pattern to produce a plurality of nanostructure cores having a plurality of sides extending from the substrate. Adjacent nanostructure cores are separated by core gaps. SERS active material is deposited onto the plurality of nanostructure cores producing a structure having gaps suitable for use in a SERS process.

Surfaced enhanced Raman spectroscopy substrates

In general, in one aspect, the invention features an apparatus that includes a plurality of optical elements arranged to form an image of an object. The elements include a first element comprising one or more regions of a polarizing material, the regions being shaped as one or more visual features, a polarizer, and a mounting assembly including a first mount for the first element and a second mount for the polarizer. At least the first or second mount is rotatable with respect to an optical axis between a first orientation and a second orientation. In the first orientation, the visual features are visible in the image of the object and, in the second orientation, the visual features are not visible in the image of the object.

Patterned polarization-sensitive optical elements and devices using the same

Methods of analysis, and compositions relating to such, to determine the presence or absence of an analyte in a sample utilizing a composite substrate which facilitates surface enhanced Raman spectroscopy through the use of 'hot spots' of the form 'metal/analyte/metal' are presented. Additionally, substrates which contain &#x2018;hot spots&#x2019; of the form &#x2018;metal/analyte/metal&#x2019; and substrates which facilitate the formation of &#x2018;hot spots&#x2019; of the form &#x2018;metal/analyte/metal&#x2019; are presented as well as methods for making these substrates.

Platform for chemical and biological sensing by surface-enhanced Raman spectroscopy

A method and device of nanostructured titania that is crack free. A method in accordance with the present invention comprises depositing a Ti film on a surface, depositing a masking layer on the Ti film, etching said masking layer to expose a limited region of the Ti film, the limited region being of an area less than a threshold area, oxidizing the exposed limited region of the Th.ucsbi film, and annealing the exposed limited region of the Ti film.

Nanostructured titania

Growing community of inventors

Santa Barbara, CA, United States of America

Martin Moskovits