Search Results - panagiotis+theofanopoulos

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Terahertz Wave Plethysmography
Heart rate and other cardiac function monitoring is conventionally performed in a healthcare setting utilizing devices such as EKGs and finger pulse oximeters. While effective, this requires physical contact with the patient and a doctor visit, making continuous or long-term monitoring difficult. Microwave radars have been used extensively for...
Published: 2/23/2023   |   Inventor(s): Yu Rong, Panagiotis Theofanopoulos, Georgios Trichopoulos, Daniel Bliss
Keywords(s):  
Category(s): Intelligence & Security, Computing & Information Technology, Life Science (All LS Techs), Wireless & Networking, Medical Devices
Efficient Multi-Bit Reconfigurable Reflective Surface (RRS) for mmWave and Terahertz Applications
Background Reflective surfaces, including metasurfaces and reflectarray antennas, are comprised of several subwavelength (< λ/2) passive reflective elements and can steer the reflection of an incident electromagnetic wave in arbitrary directions. Typically, reflective surfaces use one or multiple single-pull-single-through (SPST) switches...
Published: 2/23/2023   |   Inventor(s): Georgios Trichopoulos, Panagiotis Theofanopoulos
Keywords(s): Communications Systems, Defense/military, Imaging, Internet of Things, Mobile technology
Category(s): Computing & Information Technology, Physical Science, Wireless & Networking, Intelligence & Security
Monolithic White and Multi-Color Lasers Tunable in Full Visible Spectrum
Semiconductor lasers able to emit over the full visible color spectrum have a wide range of practical applications such as solid-state lighting, full-color displays, visible color communications, and multi-color fluorescence sensing. To the human eye, light with a mixture of four monochromatic lasers is visually equivalent to a white illuminant. Current...
Published: 2/23/2023   |   Inventor(s): Cun-Zheng Ning, Sunay Turkdogan, Zhicheng Liu, Fan Fan
Keywords(s): Materials and Electronics
Category(s): Advanced Materials/Nanotechnology, Chemical/Biological Sensors, Energy & Power, Imaging, Medical Imaging, Physical Science, Physics, Proteomic Assays/Reagents/Tools, Semiconductor Devices, Semiconductors, Materials & Processes
Radio-Frequency (RF) Imaging Sensor for Advanced Security Fingerprint Biometrics and Mobile Health Monitoring
Current portable and wearable devices use fingerprint analysis for secure authentication. The fingerprint pattern systems analyze only the surface morphology of the fingerprint, making it easy for hackers to spoof and bypass authentication. RF signals can collect tissue information beyond the surface of the finger and can provide increased security...
Published: 2/23/2023   |   Inventor(s): Georgios Trichopoulos, Panagiotis Theofanopoulos
Keywords(s): Authentication, Cyber Security, Cyber-Physical System, Engineering, Fingerprint, Graphenes, Health Monitoring, Medical Devices and Imaging, Mobile Biometrics, Real-Time System, Screening, Smart Devices, Transactions Security
Category(s): Chemical/Biological Sensors, Diagnostic Assays/Devices, Medical Diagnostics/Sensors, Physical Science, Intelligence & Security