Search Results - physics

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Recovering Implicit Physics Model under Real World Constraints
Background Model recovery involves learning the underlying physics-driven governing equations of a system from data. The goals of model recovery include accurately reconstructing the data, and deriving the fewest terms required to represent the underlying non-linear dynamics. Current methods of model recovery involve significant performance degradation...
Published: 4/28/2025   |   Inventor(s): Ayan Banerjee, Sandeep Gupta
Keywords(s):  
Category(s): Physical Science, Physics, Artificial Intelligence/Machine Learning
Model Recovery from Real World Data
Background Model recovery involves extracting coefficients of governing equations of a system from input output traces. The goals of model recovery include accurately reconstructing the input output traces, and reducing error in model coefficient estimation. Current methods of model recovery involve significant performance degradation on the data from...
Published: 4/28/2025   |   Inventor(s): Ayan Banerjee, Sandeep Gupta
Keywords(s):  
Category(s): Physical Science, Artificial Intelligence/Machine Learning, Physics
Phase Noise Cancelling Phase Noise Loop (PLL)
Background Electronic devices that use clocks (e.g., smartphones, cars, GPS) require stability of timing reference signals. For wireless and wireline communications applications, short-term clock stability is an important factor, and long-term stability is less of a concern due to periodic synchronizations between the radio nodes. Short-term clock...
Published: 2/13/2025   |   Inventor(s): Saeed Zeinolabedinzadeh, Waleed Ahmad
Keywords(s):  
Category(s): Physics, Semiconductor Devices, Physical Science, Applied Technologies, Wireless & Networking
Scalable Design and Manufacturing of Functional Metastructures and Metamaterials
Background Ultrathin photonic nanostructures, such as plasmonic and dielectric metamaterials and metasurfaces, have broad applications in electromagnetic wave manipulation, high resolution imaging, and computation. However, conventional production of these metastructures relies on precise nano-machining techniques that are difficult to manufacture...
Published: 2/13/2025   |   Inventor(s): Chao Wang, Yu Yao, Shinhyuk Choi, Jiawei Zuo
Keywords(s):  
Category(s): Advanced Materials/Nanotechnology, Imaging, Physical Science, Physics, Energy & Power
Electro-Thermo-Mechanical Characterization of Microscale Ti-6Al-4V Wires using an Innovative Experimental Method
Background Effective metal forming in the manufacture of commercial products requires that material properties after forming must be maintained or improved, and the metal forming steps must be cost-effective. Achieving both of these conditions is challenging because there is a trade-off between material performance and processing cost. Many current...
Published: 2/13/2025   |   Inventor(s): Wonjune Choi, Maxwell Kulak, Wonmo Kang
Keywords(s): Materials and Electronics
Category(s): Physical Science, Manufacturing/Construction/Mechanical, Physics
Ultrafast Optical Modulation and Ultra-Short Pulse Generation Based on Tunable Graphene-Plasmonic Hybrid Metasurfaces
Background Generation of ultra-short pulses is in demand for a variety of applications ranging from telecommunication and optical computing to ultrafast science and high-resolution spectroscopy. In spite of the relative maturity of ultra-short pulse generation in the visible and near-infrared regions of the electromagnetic (EM) spectrum, there remains...
Published: 2/13/2025   |   Inventor(s): Yu Yao, Ali Basiri
Keywords(s):  
Category(s): Advanced Materials/Nanotechnology, Physical Science, Medical Imaging, Imaging, Physics
Highly Efficient Chiral Plasmonic Metasurfaces for Mid-Infrared Polarization Filtering and Detection
Background Polarization detection and manipulation techniques have wide-ranging applications, from glare-reducing glasses, liquid-crystal displays and 3D movies to optical communication, spectrometry, hologram generation, biomedical diagnosis, chemical analysis, and target detection. Conventional methods for polarization detection and manipulation...
Published: 2/13/2025   |   Inventor(s): Yu Yao, Jing Bai
Keywords(s):  
Category(s): Physical Science, Imaging, Advanced Materials/Nanotechnology, Physics, Medical Imaging, Chemical/Biological Sensors, Semiconductors, Materials & Processes, Semiconductor Devices
MIRSIL
MIRSIL™ (MID INFRARED SILICON) A DISRUPTIVE BAND-EDGE MODIFIED BULK SILICON TECHNOLOGY FOR MID INFRARED (2-5.5µm) DETECTION AND IMAGING SUMMARY The new MIRSIL™ rare-earth enhanced silicon detector is a proven breakthrough in the detection of mid infrared light, initially in the 2-5.5µm range, with the possibility of detection...
Published: 8/19/2020   |   Inventor(s):  
Keywords(s):  
Category(s): Computing, Electronics, Diagnostics, Chemistry, Physics, Engineering, Energy
System, Method and Apparatus for Cooling Rocket Motor Components Using a Saturated Liquid-Vapor Coolant Mixture
System, Method and Apparatus for Cooling Rocket Motor Components Using a Saturated Liquid-Vapor Coolant Mixture Rocket motor cooling brochure Need: Liquid fuel rocket motors are traditionally cooled using the liquid fuel. Without liquid cooling the rocket motor would typically erode or burn away the inner surfaces of the rocket motor. Hybrid rocket...
Published: 7/2/2020   |   Inventor(s): Patrick Lemieux, William "Bill" Murray, Thomas Carpenter, James Gerhardt
Keywords(s):  
Category(s): Engineering, Mechanical, Physics, Aerospace
Hydrogen Production Using Alkali-Metal-Doped BiVO4 for Near-Perfect Suppression of Bulk Recombination by Photo-Electrochemical Water Oxidation
Background Hydrogen has been considered one of the most promising alternative fuel due to its high gravimetric energy density, low greenhouse gas emission, and ease of storage. Solar hydrogen production by water splitting in a photo-electrochemical cell (PEC) enables direct conversion of solar to fuel energy. To realize economical solar hydrogen production,...
Published: 2/23/2023   |   Inventor(s): Umesh Prasad, Jyoti Prakash, Arunachala Kannan
Keywords(s):  
Category(s): Physical Science, Semiconductors, Materials & Processes, Advanced Materials/Nanotechnology, Energy & Power, Physics
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