UChicago Argonne, LLC

Northwestern University

National Institute of Material Science

Peijun Guo

Richard D Schaller

Robert P H Chang

John B Ketterson

Alex B Martinson

Tadaaki Nagao

Benjamin Diroll

Shannon C Riha

Jonathan D Emery

Shiqiang Li

Kai Chen

Keiko Okano

Surface-functionalized nano structures, arrays of the nanostructures, and method for using the arrays in surfaced-enhanced spectroscopy and dielectric sensing applications, such as surface-enhanced infrared absorption spectroscopy, are provided. The nanostructures are functionalized with specific binding moieties that are bound to the nanostructures via phosphonic acid linkers.

Surface-functionalized nanostructures for molecular sensing applications

An optically emissive material and, in particular, materials for use in single photon generation technologies, have multiple excited energy states that have different decay rates and can emit photons with different properties. A primary excitation radiation source is configured to apply primary radiation to an optically emissive material to excite the optically emissive material into a primary excited state. A secondary excitation radiation source is configured to apply secondary radiation to a thermal contribution material to generate thermal energy in the thermal contribution material. The thermal contribution material is physically configured to transfer thermal energy to the optically emissive material and excite the optically emissive material from the primary excited state to a secondary excited state for dynamic control of the emission rate, or emitted photon properties, of the optically emissive material.

Method for dynamic control of light emission from phosphors with heat excitations

A dielectric-coating based technique determines the refractive index of small dimension materials. The technique utilizes a sample of the small dimension material coated with the dielectric and an uncoated sample, where reflectivity is determined for each. The real and imaginary components of the refractive index can be determined for the small-dimension material itself.

Method of characterizing the anisotropic, complex dielectric constant for materials with small dimensions

Disclosed herein is a method of optical modulation, the method comprising irradiating an optical switch with a control beam at a first control time and irradiating the optical switch with a signal beam at a signal time. The transmitted intensity of the signal beam in a direction depends on the delay time between the first control time and the signal time and the transmitted intensity of the signal beam in the direction is detectably different than a static signal. The optical switch comprises a nanorod array, the nanorod array comprising a plurality of nanorods extending outwardly from a substrate.

Ultrafast all-optical modulation of the visible and infrared spectrum with nanorod arrays

A method to provide an article of manufacture of iron oxide on indium tin oxide for solar energy conversion. An atomic layer epitaxy method is used to deposit an uncommon bixbytite-phase iron (III) oxide (&#x3b2;-FeO) which is deposited at low temperatures to provide 99% phase pure &#x3b2;-FeOthin films on indium tin oxide. Subsequent annealing produces pure &#x3b1;-FeOwith well-defined epitaxy via a topotactic transition. These highly crystalline films in the ultra thin film limit enable high efficiency photoelectrochemical chemical water splitting.

Atomic layer epitaxy of hematite on indium tin oxide for application in solar energy conversion

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Woodridge, IL, United States of America

Peijun Guo