Search Results - optoelectronics

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Fast-Tracking Phase Lock Loop (PLL) Architecture
When transmitting and receiving electromagnetic signals, there is a need to match the frequencies and the phases of both a received signal and a locally generated signal. In terms of signal to noise ratio (SNR), the alignment of the phases gives the best results for retrieving any data that is modulated on the received signal. Better SNR yields higher...
Published: 10/29/2024   |   Inventor(s): Saeed Zeinolabedinzadeh, Matthew Kinsinger, Waleed Ahmad
Keywords(s): Biosensor, Communications Systems, Defense/military, Electronics, High Resolution, Integrated Circuits, Internet of Things, Medical Devices and Imaging, Mobile technology, Optoelectronics, Photonic, Positioning, Navigation and Timing (PNT), Sensors, Wireless
Category(s): Physical Science, Wireless & Networking
Steric Hindrance Effect of Additives for Tuning the Perovskite Crystal Orientation (Case No. 2024-023)
Summary: UCLA Researchers in the Department of Materials Science and Engineering have developed a method to tune perovskite crystal orientation for increased performance, energy efficiency, and reduced material defect with a variety of field applications, including solar cells and LEDs. Background: Perovskite holds considerable promise as a highly...
Published: 10/25/2024   |   Inventor(s): Yang Yang, Chunqing Ma, Haoxiang Duan, Dong Meng
Keywords(s): Energy Efficiency, energy-efficient, Imaging, Liquid-Crystal Display, Nanocrystal, OLED, Optoelectronics, organic photo detector, organic photovoltaics, perovskite, perovskite devices, perovskite solar cell, photodetection, Solar Cell, X-ray detectors
Category(s): Chemical > Chemical Processing & Manufacturing, Energy & Environment > Energy Efficiency, Energy & Environment, Materials > Composite Materials, Optics & Photonics, Optics & Photonics > Fiber Optics, Materials > Functional Materials
Intergrated Cavity Optomechanical Thermal Imaging Transducer (Case No. 2023-294)
Summary: UCLA researchers from the Department of Electrical and Computer Engineering have developed a novel transducer for integrated cavity optomechanical thermal imaging. Background: Measuring infrared (IR) radiation provides information across a range of scientific, industrial, and medical applications, and is widely used in thermography, medical...
Published: 7/3/2024   |   Inventor(s): Chee Wei Wong, Jaime Flores, Talha Yerebakan
Keywords(s): cavity optomechanics, cryogenic cooling, Digital Electronics, Electronics & Semiconductors, electronics packaging, Environmental monitoring, infrared (IR) radiation, Integrated Cavity, Microelectronics, Nanoelectronics, non-invasive imaging, Optoelectronic materials, opto-electronic systems, Optoelectronics, Optoelectronics Waveguide (Electromagnetism), optofluidics, Optomechanical accelerometer, optomechanical oscillator, Optomechanical Thermal Imaging Transducer, photodetection, Power Electronics, radiation detection, spectral density, thermomechanical noise
Category(s): Electrical, Electrical > Imaging, Electrical > Electronics & Semiconductors, Electrical > Electronics & Semiconductors > Thermoelectrics
Parametrically Driven Intertial Sensing in Chip-Scale Optomechanical Cavities at the Thermodynamical Limits with Extended Dynamic Range (Case No. 2023-282)
Summary: UCLA researchers in the Department of Electrical and Computer Engineering have developed an accelerometer model that uses optomechanical transduction, enabling higher precision motion detection through a simplified design. Background: Modern transportation and communication technologies rely on the measurement and transduction of minute...
Published: 1/22/2024   |   Inventor(s): Chee Wei Wong, Jaime Flores
Keywords(s): accelerometer, cavity optomechanics, Force sensor, inertial sensor, motion detection, Optoelectronics, Optomechanical accelerometer, Sensors, Signal Processing, Voltage-Controlled Oscillator
Category(s): Electrical, Electrical > Signal Processing, Electrical > Sensors
Kinetic Model for Molecular Beam Epitaxy Growth of III-V Bismide Alloys
Background Bismuth-containing III-V semiconductor alloys have received considerable attention as materials for optoelectronic devices operating in the mid- and long-wave infrared spectrum. The infrared spectrum finds important applications in both commerce and government, including medical imaging and diagnostics, autonomous vehicle sensors, telecommunications,...
Published: 2/23/2023   |   Inventor(s): Stephen Schaefer, Marko Milosavljevic, Rajeev Reddy Kosireddy, Shane Johnson
Keywords(s): Defense Applications, Electronics, Epitaxy, Infrared, Materials and Electronics, Modeling, Molecular Beam Epitaxy, Optoelectronics, Semiconductor Processing, Thin Films
Category(s): Physical Science, Advanced Materials/Nanotechnology, Semiconductors, Materials & Processes
Polymeric Mac-Imprint Stamp Materials for High-Density Defect-Free Patterning of Semiconductors
Metal-assisted chemical imprinting (Mac-Imprint) is a contact-based wet etching process that combines metal-assisted chemical etching (MACE) and nanoimprint lithography (NIL). Mac-Imprint processes have been used for semiconductor patterning with arbitrary and complex 3D micro- and nano-structures. While porous catalytic metal thin-films can be used...
Published: 2/23/2023   |   Inventor(s): Aliaksandr Sharstniou, Stanislau Niauzorau, Bruno Azeredo, Yifu Ding, Jasmina Markovski
Keywords(s): Mechanical and Manufacturing, Optoelectronics, Polymer, PS-Semiconductors, Materials, Processes
Category(s): Semiconductors, Materials & Processes, Physical Science, Advanced Materials/Nanotechnology
Tunable and Reconfigurable Atomically Thin Heterostructures
3 layers can form rotationally-aligned stacks with long-range crystallographic order. Our theory predicts and experiments reveal striking electronic and optical changes when Bi2Se3 is stacked layer-by-layer on monolayer MoS2, including the formation of an indirect bandgap and 100% photoluminescence (PL) suppression, tunable transmittance-edge (1.1 eV®0.75...
Published: 9/10/2024   |   Inventor(s): Swastik Kar, Fangze Liu, Christopher Lane, Daniel Rubin, Arun Bansil, Anthony Vargas, Zachariah Hennighausen
Keywords(s): Data Storage, Devices, Electronics, Energy Technology, Materials, Memory, Optoelectronics
Category(s): -Chemistry, -Materials, -Optics, -Nanotechnology, -Sensors tech, Technology Classifications > 2. Physical Science > Electronics/Semiconductors
High-resolution Flexible Neural Implant
Optogenetics uses light stimulation to control the excitation, inhibition, or signaling pathways of optically excitable cells and provides a powerful tool to diagnose and treat, as well as understand, numerous neurological and psychiatric diseases and disorders. Modified neurons can be activated or silenced by different light frequencies. However, the...
Published: 10/7/2024   |   Inventor(s): Joseph Smith, Barry O'Brien, Yong-Kyun Lee, Edward Bawolek, Jennifer Blain Christen, Michael Goryll, Jitendran "jit" Muthuswamy, George Kunnen, David Allee
Keywords(s): Biological Cell Monitoring, Biosignature, Bio-Technology, Flexible electronics, Optoelectronics, Optogenetics
Category(s): Advanced Materials/Nanotechnology, Biomaterials, Life Science (All LS Techs), Medical Devices, Neurodegenerative Disease Technologies, Semiconductors, Materials & Processes
Materials and Optical Devices Based on Group IV Quantum Wells Grown on Si-Ge-Sn Buffered Silicon
The ability to manufacture high quality Sn-Ge and Si-Ge-Sn alloys has significant industry value for various reasons; however, existing techniques have failed to produce sufficiently high quality alloys to allow for effective use of these alloys in device applications. Specifically, the ability of Sn-Ge alloys to transition from indirect- to direct-gap...
Published: 2/23/2023   |   Inventor(s): John Kouvetakis, Jose Menendez, John Tolle
Keywords(s): Optoelectronics
Category(s): Physical Science, Semiconductor Devices
Electron-Deficient Fluorous Porphyrins and Their Use in Organic Solar Cells
Fluorinated aromatics and related materials offer many advantages over non-fluorinated materials in a variety of different optoelectronic devices such as, but not limited to, organic light emitting diodes (OLEDs), organic field-effect transistors (OFETs), organic solar cells (OSCs), and dye-sensitized solar cells (DSSCs). These fluorinated materials...
Published: 5/2/2020   |   Inventor(s): Haoran Sun
Keywords(s): Chemistry, Fluorinated Materials, Fluorine, Optical Communication, Optoelectronics, Semiconductors
Category(s): Chemistry, Semiconductors, Renewable Energy, Fluorinated Materials, Optoelectronics, Materials Science
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