Patents by Inventor Joseph A. Miragliotta
Joseph A. Miragliotta 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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Publication number: 20240010365Abstract: A device for imaging light, or a source of the light, includes a window for receiving incident light from the source, at least one metasurface, and at least one wedge prism. The metasurface and the wedge prism form a Risley pair and are displaced independently of each other. Each of the metasurface and the wedge prism are operative to deflect the incident light at an angle that is different from an angle of light incident upon them. Each metasurface includes a plurality of sub-wavelength structures that are operative to interact with the incident light received from the window. The device also includes a lens system that is operative to transmit the incident light received from the at least one metasurface and the at least one wedge prism and focuses it on a focal plane.Type: ApplicationFiled: July 11, 2023Publication date: January 11, 2024Inventors: David B. Shrekenhamer, Joseph A. Miragliotta, Juliana T. Vievering, Angelos Vourlidas, Joseph L. Centurelli, Chad N. Weiler, Nora C. Lane
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Publication number: 20230126472Abstract: A composite and an adaptive coating are provided. The composite includes a first layer, a second layer disposed on the first layer, and a third layer disposed on the second layer. The third layer constitutes a phase change material characterized by a transition temperature. The phase change material includes a dopant. The adaptive coating includes a visible light filter and the phase change material. When a temperature of the phase change material exceeds a threshold temperature, the adaptive coating is configured to radiate light in the infrared spectrum. When the temperature of the phase change material is less than the threshold temperature, the adaptive coating is configured not to radiate light in the infrared spectrum.Type: ApplicationFiled: October 26, 2022Publication date: April 27, 2023Inventors: Joseph A. Miragliotta, David B. Shrekenhamer, Andrew C. Strikwerda, Gabriella M. Hunt
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Patent number: 11522128Abstract: A metasurface unit cell for use in constructing a metasurface array is provided. The unit cell may include a ground plane layer comprising a first conductive material, and a phase change material layer operably coupled to the ground plane layer. The phase change material layer may include a phase change material configured to transition between an amorphous phase and a crystalline phase in response to a stimulus. The unit cell may further include a patterned element disposed adjacent to the phase change material layer and includes a second conductive material. In response to the phase change material transitioning from a first phase to a second phase, the metasurface unit cell may resonate to generate an electromagnetic signal having a defined wavelength. The first phase may be the amorphous phase or the crystalline phase and the second phase may be the other of the amorphous phase or the crystalline phase.Type: GrantFiled: March 1, 2019Date of Patent: December 6, 2022Assignee: The Johns Hopkins UniversityInventors: David B. Shrekenhamer, Jeffrey P. Maranchi, Joseph A. Miragliotta, Keith S. Caruso
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Patent number: 11460607Abstract: An apparatus includes a substrate, a first patterned layer, and a second patterned layer. The first patterned layer may be coupled to the substrate and may have a first metasurface pattern. The second patterned layer disposed separately from the substrate and the first patterned layer, and may have a second metasurface pattern. Movement of the first patterned layer relative to the second patterned layer may be controllable via control circuitry such that a gap distance of a gap between the first patterned layer and the second patterned layer is changed to cause a transmittance for radiant energy of a selected wavelength passing through the apparatus to change from a first transmittance value to a second transmittance value.Type: GrantFiled: July 4, 2019Date of Patent: October 4, 2022Assignee: The Johns Hopkins UniversityInventors: David B. Shrekenhamer, Luke J. Currano, Konstantinos Gerasopoulos, Joseph A. Miragliotta, Joshua B. Broadwater, Garret T. Bonnema
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Patent number: 10938122Abstract: An antenna includes a top plate having a top side and a bottom side, a ground plate disposed parallel to the top plate, a ground pin connecting the top plate to the ground plate, and a probe pin connected to the bottom side of the top plate. The probe pin is configured to be connected to a signal source. The antenna further includes a first dielectric layer adjacent to the bottom side of the top plate, and a first patterned conductor layer adjacent to the first dielectric layer. The first dielectric layer is disposed between the top plate and the first patterned conductor layer. The top plate is separated from the ground plate by a distance.Type: GrantFiled: August 29, 2019Date of Patent: March 2, 2021Assignee: The Johns Hopkins UniversityInventors: Joseph A. Miragliotta, Kenneth R. Grossman
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Publication number: 20200274245Abstract: A metasurface unit cell for use in constructing a metasurface array is provided. The unit cell may include a ground plane layer comprising a first conductive material, and a phase change material layer operably coupled to the ground plane layer. The phase change material layer may include a phase change material configured to transition between an amorphous phase and a crystalline phase in response to a stimulus. The unit cell may further include a patterned element disposed adjacent to the phase change material layer and includes a second conductive material. In response to the phase change material transitioning from a first phase to a second phase, the metasurface unit cell may resonate to generate an electromagnetic signal having a defined wavelength. The first phase may be the amorphous phase or the crystalline phase and the second phase may be the other of the amorphous phase or the crystalline phase.Type: ApplicationFiled: March 1, 2019Publication date: August 27, 2020Inventors: David B. Shrekenhamer, Jeffrey P. Maranchi, Joseph A. Miragliotta, Keith S. Caruso
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Publication number: 20200203850Abstract: An antenna includes a top plate having a top side and a bottom side, a ground plate disposed parallel to the top plate, a ground pin connecting the top plate to the ground plate, and a probe pin connected to the bottom side of the top plate. The probe pin is configured to be connected to a signal source. The antenna further includes a first dielectric layer adjacent to the bottom side of the top plate, and a first patterned conductor layer adjacent to the first dielectric layer. The first dielectric layer is disposed between the top plate and the first patterned conductor layer. The top plate is separated from the ground plate by a distance.Type: ApplicationFiled: August 29, 2019Publication date: June 25, 2020Inventors: Joseph A. Miragliotta, Kenneth R. Grossman
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Patent number: 10626910Abstract: A fastener is configured to maintain electromagnetic interference characteristics of metamaterial shielding. The fastener includes a head having an interior side and an exterior side, a shank extending from the interior side of the head and configured to be driven into a receiving surface, and a seal being formed as a loop and disposed on the interior side of the head. The seal may include a conductive material.Type: GrantFiled: July 3, 2018Date of Patent: April 21, 2020Assignee: The Johns Hopkins UniversityInventors: Kenneth R. Grossman, Joseph A. Miragliotta, Adam J. Maisano, Douglas B. Trigg
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Publication number: 20200014464Abstract: An apparatus includes a substrate, a first patterned layer, and a second patterned layer. The first patterned layer may be coupled to the substrate and may have a first metasurface pattern. The second patterned layer disposed separately from the substrate and the first patterned layer, and may have a second metasurface pattern. Movement of the first patterned layer relative to the second patterned layer may be controllable via control circuitry such that a gap distance of a gap between the first patterned layer and the second patterned layer is changed to cause a transmittance for radiant energy of a selected wavelength passing through the apparatus to change from a first transmittance value to a second transmittance value.Type: ApplicationFiled: July 4, 2019Publication date: January 9, 2020Inventors: David B. Shrekenhamer, Luke J. Currano, Konstantinos Gerasopoulos, Joseph A. Miragliotta, Joshua B. Broadwater, Garret T. Bonnema
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Patent number: 10439292Abstract: Electromagnetic shielding systems, apparatuses, and method are provided. One apparatus is an example free-space absorber metamaterial that includes a first array of patches disposed at a first plane, a conductive backplane disposed at a structural surface plane, and a first dielectric spacer disposed between the first array of patches and the conductive backplane. A first bandwidth of absorption for the free-space absorber metamaterial may be based on the area of a patch in the first array of patches, the first electrical resistance of a patch in the first array of patches, and the first gap distance taken between the first array of patches and the conductive backplane.Type: GrantFiled: July 3, 2018Date of Patent: October 8, 2019Assignee: The Johns Hopkins UniversityInventors: Kenneth R. Grossman, Joseph A. Miragliotta, Adam J. Maisano, Douglas B. Trigg, Steven M. Storck
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Patent number: 10439291Abstract: A radio frequency surface wave attenuator structure is provided. The structure may be configured to be operably coupled with a plurality of other radio frequency surface wave attenuator structures to form a metamaterial. The radio frequency surface wave attenuator structure may include a patch disposed in a first plane and defining a patch area and a backplane disposed in a second plane and extending along the second plane to be shared with the other surface wave attenuator structures. The structure may further include a via spring having a number of turns and being comprised of a conductive material. The via spring may electrically couple the patch to the backplane. The structure may further include a dielectric disposed between the patch and the backplane.Type: GrantFiled: January 31, 2018Date of Patent: October 8, 2019Assignee: The Johns Hopkins UniversityInventors: Kenneth R. Grossman, Joseph A. Miragliotta, Adam J. Maisano, Douglas B. Trigg
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Publication number: 20190140357Abstract: Electromagnetic shielding systems, apparatuses, and method are provided. One apparatus is an example free-space absorber metamaterial that includes a first array of patches disposed at a first plane, a conductive backplane disposed at a structural surface plane, and a first dielectric spacer disposed between the first array of patches and the conductive backplane. A first bandwidth of absorption for the free-space absorber metamaterial may be based on the area of a patch in the first array of patches, the first electrical resistance of a patch in the first array of patches, and the first gap distance taken between the first array of patches and the conductive backplane.Type: ApplicationFiled: July 3, 2018Publication date: May 9, 2019Inventors: Kenneth R. Grossman, Joseph A. Miragliotta, Adam J. Maisano, Douglas B. Trigg, Steven M. Storck
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Publication number: 20190072126Abstract: A fastener is configured to maintain electromagnetic interference characteristics of metamaterial shielding. The fastener includes a head having an interior side and an exterior side, a shank extending from the interior side of the head and configured to be driven into a receiving surface, and a seal being formed as a loop and disposed on the interior side of the head. The seal may include a conductive material.Type: ApplicationFiled: July 3, 2018Publication date: March 7, 2019Inventors: Kenneth R. Grossman, Joseph A. Miragliotta, Adam J. Maisano, Douglas B. Trigg
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Patent number: 10109920Abstract: An antenna is provided including an electromagnetic metasurface. The electromagnetic characteristics of the antenna are dynamically tunable.Type: GrantFiled: November 19, 2015Date of Patent: October 23, 2018Assignee: The Johns Hopkins UniversityInventors: David B. Shrekenhamer, Joseph A. Miragliotta, Kenneth R. Grossman
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Publication number: 20180287261Abstract: A radio frequency surface wave attenuator structure is provided. The structure may be configured to be operably coupled with a plurality of other radio frequency surface wave attenuator structures to form a metamaterial. The radio frequency surface wave attenuator structure may include a patch disposed in a first plane and defining a patch area and a backplane disposed in a second plane and extending along the second plane to be shared with the other surface wave attenuator structures. The structure may further include a via spring having a number of turns and being comprised of a conductive material. The via spring may electrically couple the patch to the backplane. The structure may further include a dielectric disposed between the patch and the backplane.Type: ApplicationFiled: January 31, 2018Publication date: October 4, 2018Inventors: Kenneth R. Grossman, Joseph A. Miragliotta, Adam J. Maisano, Douglas B. Trigg
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Publication number: 20060193356Abstract: A scalable architecture based in silicon on sapphire (SOS) CMOS for building an interferometric optical detection system to sense the motion of a resonating MEMS device or to detect the motion of any object to which the system is packaged. The SOS CMOS device is packaged with both vertical cavity surface emitting lasers (VCSELs) and MEMS devices. The optical transparency of the sapphire substrate together with the ultra thin silicon PIN photodiodes available in the SOS process allows for the design of both a Michelson-type and Fabry-Perot-type interferometer. The detectors, signal processing electronics and VCSEL drivers are built on the SOS CMOS for a complete system.Type: ApplicationFiled: January 17, 2006Publication date: August 31, 2006Inventors: Robert Osiander, Andreas Andreou, Francisco Tejada, Danielle Wesolek, Joseph Miragliotta, Philippe Pouliquen, Dennis Wickenden
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Patent number: 6997061Abstract: A non-contact method for evaluating stress in a substrate. An impurity is non-uniformly introduced into at least one region of a crystalline substrate. The crystalline substrate is subjected to physical stress. Fluorescence producing energy is directed at the crystalline substrate. A fluorescence produced by the crystalline substrate is measured. The fluorescence is correlated with the stress on the crystalline substrate.Type: GrantFiled: May 17, 2004Date of Patent: February 14, 2006Assignee: The Johns Hopkins UniversityInventors: Joseph A. Miragliotta, Kenneth R. Grossman, R. Kelly Frazer, Robert J. Bamberger, Jr.
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Publication number: 20040211264Abstract: A non-contact method for evaluating stress in a substrate. An impurity is non-uniformly introduced into at least one region of a crystalline substrate. The crystalline substrate is subjected to physical stress. Fluorescence producing energy is directed at the crystalline substrate. A fluorescence produced by the crystalline substrate is measured. The fluorescence is correlated with the stress on the crystalline substrate.Type: ApplicationFiled: May 17, 2004Publication date: October 28, 2004Inventors: Joseph A. Miragliotta, Kenneth R. Grossman, R. Kelly Frazer, Robert J. Bamberger
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Patent number: 6763727Abstract: A non-contact method for evaluating stress in a substrate. An impurity is non-uniformly introduced into at least one region of a crystalline substrate. The crystalline substrate is subjected to physical stress. Fluorescence producing energy is directed at the crystalline substrate. A fluorescence produced by the crystalline substrate is measured. The fluorescence is correlated with the stress on the crystalline substrate.Type: GrantFiled: May 20, 2002Date of Patent: July 20, 2004Assignee: The Johns Hopkins UniversityInventors: Joseph A. Miragliotta, Kenneth R. Grossman, R. Kelly Frazer, Robert J. Bamberger, Jr.
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Publication number: 20030109049Abstract: Sensors and/or taggants feature high optical gain materials which are disposed in a high scattering environment. These materials, when adequately excited, emit intense and spectrally narrow light that is dependent on the chemical environment in which high gain materials are dispersed. When two materials are placed in the same high scattering environment, the spectal emission properties of each emitter will depend on the chemical composition of the surrounding medium. The switching or transferring of energy from one emitter to the other when the chemical environment is changed in a specific manner is enabled and a shift in the spectral emissions can be detected and/or predicted.Type: ApplicationFiled: November 25, 2002Publication date: June 12, 2003Inventors: Joseph A. Miragliotta, Richard C. Benson, Robert Osiander