Patents by Inventor Harsha Reddy
Harsha Reddy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11726233Abstract: An optical sensor system, comprising refractory plasmonic elements that can withstand temperatures exceeding 2500° C. in chemically aggressive and harsh environments that impose stress, strain and vibrations. A plasmonic metamaterial or metasurface, engineered to have a specific spectral and angular response, exhibits optical reflection characteristics that are altered by varying physical environmental conditions including but not limited to temperature, surface chemistry or elastic stress, strain and other types of mechanical load. The metamaterial or metasurface comprises a set of ultra-thin structured layers with a total thickness of less than tens of microns that can be deployed onto surfaces of devices operating in harsh environmental conditions. The top interface of the metamaterial or metasurface is illuminated with a light source, either through free space or via an optical fiber, and the reflected signal is detected employing remote detectors.Type: GrantFiled: March 31, 2020Date of Patent: August 15, 2023Assignee: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Ibrahim Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20220397702Abstract: An optical sensor system, comprising refractory plasmonic elements that can withstand temperatures exceeding 2500° C. in chemically aggressive and harsh environments that impose stress, strain and vibrations. A plasmonic metamaterial or metasurface, engineered to have a specific spectral and angular response, exhibits optical reflection characteristics that are altered by varying physical environmental conditions including but not limited to temperature, surface chemistry or elastic stress, strain and other types of mechanical load. The metamaterial or metasurface comprises a set of ultra-thin structured layers with a total thickness of less than tens of microns that can be deployed onto surfaces of devices operating in harsh environmental conditions. The top interface of the metamaterial or metasurface is illuminated with a light source, either through free space or via an optical fiber, and the reflected signal is detected employing remote detectors.Type: ApplicationFiled: March 31, 2020Publication date: December 15, 2022Applicant: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20210302623Abstract: An optical sensor system, comprising refractory plasmonic elements that can withstand temperatures exceeding 2500° C. in chemically aggressive and harsh environments that impose stress, strain and vibrations. A plasmonic metamaterial or metasurface, engineered to have a specific spectral and angular response, exhibits optical reflection characteristics that are altered by varying physical environmental conditions including but not limited to temperature, surface chemistry or elastic stress, strain and other types of mechanical load. The metamaterial or metasurface comprises a set of ultra-thin structured layers with a total thickness of less than tens of microns that can be deployed onto surfaces of devices operating in harsh environmental conditions. The top interface of the metamaterial or metasurface is illuminated with a light source, either through free space or via an optical fiber, and the reflected signal is detected employing remote detectors.Type: ApplicationFiled: March 31, 2020Publication date: September 30, 2021Applicant: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20210234498Abstract: A system including a first cylindrical structure embedded into a second cylindrical structure. The first cylindrical structure includes a combustion chamber. The first cylinder additionally includes a plurality of plasmonic materials on an outer wall of the first cylindrical structure. The second cylindrical structure includes a plurality of photovoltaic cells on an inner wall of the second cylindrical structure. A radius of the second cylindrical structure is greater than a radius of the first cylindrical structure.Type: ApplicationFiled: May 1, 2020Publication date: July 29, 2021Applicant: Purdue Research FoundationInventors: Esteban Marinero-Caceres, Arnold Toppo, Sajid Choudhury, Urcan Guler, Zhaxylyk Kudyshev, Joseph Pekny, Swati Pol, Harsha Reddy, Vladimir Shalaev
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Patent number: 10670772Abstract: An optical sensor system, comprising refractory plasmonic elements that can withstand temperatures exceeding 2500° C. in chemically aggressive and harsh environments that impose stress, strain and vibrations. A plasmonic metamaterial or metasurface, engineered to have a specific spectral and angular response, exhibits optical reflection characteristics that are altered by varying physical environmental conditions including but not limited to temperature, surface chemistry or elastic stress, strain and other types of mechanical load. The metamaterial or metasurface comprises a set of ultra-thin structured layers with a total thickness of less than tens of microns that can be deployed onto surfaces of devices operating in harsh environmental conditions. The top interface of the metamaterial or metasurface is illuminated with a light source, either through free space or via an optical fiber, and the reflected signal is detected employing remote detectors.Type: GrantFiled: May 14, 2018Date of Patent: June 2, 2020Assignee: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M Shalaev
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Publication number: 20180329115Abstract: An optical sensor system, comprising refractory plasmonic elements that can withstand temperatures exceeding 2500° C. in chemically aggressive and harsh environments that impose stress, strain and vibrations. A plasmonic metamaterial or metasurface, engineered to have a specific spectral and angular response, exhibits optical reflection characteristics that are altered by varying physical environmental conditions including but not limited to temperature, surface chemistry or elastic stress, strain and other types of mechanical load. The metamaterial or metasurface comprises a set of ultra-thin structured layers with a total thickness of less than tens of microns that can be deployed onto surfaces of devices operating in harsh environmental conditions. The top interface of the metamaterial or metasurface is illuminated with a light source, either through free space or via an optical fiber, and the reflected signal is detected employing remote detectors.Type: ApplicationFiled: May 14, 2018Publication date: November 15, 2018Applicant: Purdue Research FoundationInventors: Alexander V. Kildishev, Urcan Guler, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M Shalaev