Search Results - physical sciences

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Nanophotonic radiative decay rate engineering for stable, phosphorescent emission of blue light
The radiative and non-radiative decay rate of phosphorescent emitting materials can be tuned by the geometry of the nanostructure (NP).Invention Summary: Blue-emitting, phosphorescent organic light emitting diodes (OLEDs) have high efficiency but low stability. As a result, the less efficient fluorescent materials are typically used in OLEDs to ext...
Published: 8/28/2017   |   Inventor(s): Deirdre O'Carroll
Category(s): Electronics, Engineering, Materials, Physical Sciences
An Underwater Acoustic Lens
Invention Summary: Sending and receiving information below the water surface is important but challenging. Techniques such as Sonar use acoustic waves in water to transmit information. Acoustic metamaterials enable Sonar devices to control, direct and manipulate sound waves for increased functionality and higher efficiency. Specifically, acoustic l...
Published: 8/14/2017   |   Inventor(s): Andrew Norris, Xiaoshi Su
Category(s): Physical Sciences, Engineering
Invention Summary:Raman spectroscopy is a valuable analytical tool that employs vibration patterns for the identification of molecules. However, it is limited due to the low scattering cross section of most Raman active molecules, which leads to low sensitivity. Surface-enhanced Raman spectroscopy (SERS) increases the intensity of Raman signals by ...
Published: 8/7/2017   |   Inventor(s): Laura Fabris, Swarnapali Indrasekara
Keywords(s): Biomedical Imaging, Gold Nanoparticles, Imaging, Raman Spectroscopy, Spectroscopy
Category(s): Physical Sciences, Electronics
Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics
Parallel plate capacitor configuration used to apply an electric field and to achieve low-temperature sintering of a non-oxide ceramic (B4C)Invention Summary: Bulk and composite structural ceramics can be fabricated by sintering, forming particulate matter into a desired shape and then subjecting the formed body to high temperatures (2/3 of the me...
Published: 8/7/2017   |   Inventor(s): Thomas Tsakalakos, Enver Akdogan, Ilyas Savkliyildiz, Hulya Bicer, William Paxton, Bart Visser, Lawrence Kabacoff
Keywords(s): Ceramics, Continuous Manufacturing, Low Temperature, Sintering
Category(s): Physical Sciences, Engineering, Materials
Waveguide Array for High Density Integration with Low Crosstalk
Top: Average transmission of each waveguide output port (indicated by color)Invention Summary:The success of silicon photonic devices depends on high integration density. However, at the sub-wavelength scale, waveguides suffer from high crosstalk.The present technology reduces crosstalk at the sub-micron scale by using a superlattice of waveguides....
Published: 8/7/2017   |   Inventor(s): Wei Jiang
Keywords(s): Crosstalk, Optical Communication, Photonics, Waveguide
Category(s): Physical Sciences, Electronics, Engineering, Information Technology, Telecommunications
Polyaniline-Derived N- and O-Doped Mesoporous Carbon: Electrocatalysts for Oxygen Reduction Reaction (ORR)
Invention Summary:In the face of global problems associated with the lack of sustainable and renewable energy sources and environmental pollutions caused by fossil fuels, fuel cells have long been expected to contribute to the solutions to these daunting problems by helping to produce electricity from fuels such as hydrogen. Unfortunately, the elec...
Published: 8/7/2017   |   Inventor(s): Tewodros Asefa, Rafael Silva
Keywords(s): Catalysts and Catalytic Processes, Fuel Cell Catalyst
Category(s): Physical Sciences, Materials, Environmental
Invention Summary:Oscillation is a common phenomenon to virtually all areas of science. Many products in the marketplace use oscillators as a means of keeping time such as the quartz crystal used in modern watches. These oscillators, while commonly used, exhibit a variety of instabilities resulting from aging, noise, and frequency changes caused by...
Published: 8/7/2017   |   Inventor(s): Yook-Kong Yong
Keywords(s): Photonics
Category(s): Physical Sciences, Information Technology, Electronics, Engineering
Smart Circuit Building Blocks for SOG and Wearable Electronics
Invention Summary:Advanced information technology, such as emerging internet of things (IoT) is facing increasing needs for systems-on-demand capable of task and defect adaptation in real-time at lower cost. High-performance electronic systems combing the state-of-the-art processing logics, memories, and sensors on a single chip is highly desired. ...
Published: 8/7/2017   |   Inventor(s): Yicheng Lu
Keywords(s): 3D, Display
Category(s): Physical Sciences, Electronics, Telecommunications
Invention Summary: Large oil spills (over 100,000 tons) such as the BP Deepwater Horizon spill (in which $20B was spent on cleanup and litigation) are not very frequent. However, in 2011 there were over 10 oil spills that released between 15 to 5,500 tons of oil into water. When an oil spill disaster occurs, oil quickly spreads on the surface of wa...
Published: 8/7/2017   |   Inventor(s): Shahab Shojaei-Zadeh, Michael Fechtmann
Keywords(s): Biocompatible, Oil Absorbtion
Category(s): Physical Sciences, Materials
Inorganic, Mineral-based Polymers with Ionic Crosslinks
Inorganic ionomers show characteristic behavior of polymers, including fiber formation (left) and flow (center). However, they have high thermal stability: like silicate glass (top right), inorganic ionomers (bottom right) they do not burn or produce fumes when exposed to flame.Invention Summary:Traditional, carbon-based, organic polymers have many...
Published: 8/7/2017   |   Inventor(s): Masanori Hara
Keywords(s): Inorganic, Plastics, Polymers
Category(s): Physical Sciences, Materials
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