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公开(公告)号：US09841606B2
公开(公告)日：2017-12-12
申请号：US14532597
申请日：2014-11-04
Applicant: Massachusetts Institute of Technology
Inventor： Mordechai Rothschild , Kenneth Diest , Vladimir Liberman
CPC classification number: G02B27/288 , G02B1/002 , G02B5/285 , G02B5/30 , G02B5/3083 , G02B27/28
Abstract: An embodiment according to the invention provides an optical filter that combines narrow spectral bandwidth and high rejection of out-of-band radiation with a wide acceptance angle. These filters are based on the nanoscale engineering of materials (“metamaterials”) that possess predefined birefringence determined by a combination of their geometry and material composition. These metamaterials are combined into a functional optical filter that can exhibit true zero crossing, with acceptance angle effectively decoupled from bandwidth, at practically any wavelength of interest.
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公开(公告)号：US10151074B2
公开(公告)日：2018-12-11
申请号：US15380999
申请日：2016-12-15
Applicant: Massachusetts Institute of Technology
Inventor： Robert W. Haupt , Mordechai Rothschild , Vladimir Liberman , Charles G. Doll, Jr. , Shaun R. Berry
Abstract: A seismic, water, or acoustic wave damping structure can include a structural arrangement of at least two elements, each with an inner volume and containing a medium resistant to passage of an anticipated wave. Example elements can be earth boreholes or water pylons. The structural arrangement can taper from an upper aperture to a lower aperture, the structural arrangement defining a protection zone at the upper aperture. The structural arrangement can be configured to attenuate power from the anticipated wave within the protection zone relative to power from the anticipated wave external to the protection zone. A grouping may include elements that form acute or obtuse angles with a direction of a wave to attenuate wave power. High-value buildings or other structure in a protection zone on land or in water can be substantially shielded from seismic or water waves.
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公开(公告)号：US20170299881A1
公开(公告)日：2017-10-19
申请号：US14532597
申请日：2014-11-04
Applicant: Massachusetts Institute of Technology
Inventor： Mordechai Rothschild , Kenneth Diest , Vladimir Liberman
CPC classification number: G02B27/288 , G02B1/002 , G02B5/285 , G02B5/30 , G02B5/3083 , G02B27/28
Abstract: An embodiment according to the invention provides an optical filter that combines narrow spectral bandwidth and high rejection of out-of-band radiation with a wide acceptance angle. These filters are based on the nanoscale engineering of materials (“metamaterials”) that possess predefined birefringence determined by a combination of their geometry and material composition. These metamaterials are combined into a functional optical filter that can exhibit true zero crossing, with acceptance angle effectively decoupled from bandwidth, at practically any wavelength of interest.
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Patent Agency Ranking
公开(公告)号：US20190112775A1
公开(公告)日：2019-04-18
申请号：US16172717
申请日：2018-10-26
Applicant: Massachusetts Institute of Technology
Inventor： Robert W. Haupt , Mordechai Rothschild , Vladimir Liberman , Charles G. Doll, JR. , Shaun R. Berry
CPC classification number: E02D5/22 , E02B17/0017 , E04H9/021 , E04H2009/026
Abstract: An elastic wave damping structure can include a structural arrangement of at least two elements, each with an inner volume and containing a medium resistant to passage of an elastic wave. Example elements can be earth boreholes or water pylons. The structural arrangement can taper from an upper aperture to a lower aperture, the structural arrangement defining a protection zone at the upper aperture. The structural arrangement can be configured to attenuate power from the anticipated elastic wave within the protection zone relative to power from the anticipated elastic wave external to the protection zone. A grouping may include elements that form acute or obtuse angles with a direction of an elastic wave to attenuate wave power. High-value buildings or other structure in a protection zone on land or in water can be substantially shielded from seismic or water waves.
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公开(公告)号：US11320647B2
公开(公告)日：2022-05-03
申请号：US16263071
申请日：2019-01-31
Applicant: Massachusetts Institute of Technology
Inventor： Jeffrey Chou , Vladimir Liberman , Juejun Hu , Yifei Zhang , William Herzog , Jason Stewart , Christopher Roberts
Abstract: Alloys of GeSbSeTe (GSST) can be used to make actively tunable infrared transmission filters that are small, fast, and solid-state. These filters can be used for hyperspectral imaging, 3D LIDAR, portable bio/chem sensing systems, thermal emission control, and tunable filters. GSST is a low-loss phase-change material that can switch from a low-index (n=3), amorphous state to a high-index (n=4.5), hexagonal state with low loss (k
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公开(公告)号：US20200157762A1
公开(公告)日：2020-05-21
申请号：US16688997
申请日：2019-11-19
Applicant: Massachusetts Institute of Technology
Inventor： Robert W. Haupt , Mordechai Rothschild , Vladimir Liberman
Abstract: A seismic wave damping system, and a corresponding method, includes elements, embedded within a host medium, the elements defining a seismic damping structure, and the elements being arranged to form a border of a protection zone. The seismic damping structure is configured to attenuate power of a seismic wave, traveling from a distal medium to the host medium, that is incident at the protection zone. The seismic damping structure is characterized by a resonance frequency. The system further includes an anti-resonance damping structure positioned within the protection zone and configured to dampen a residual wave propagating within the protection zone at the resonance frequency. Embodiment systems offer synergistic advantages because resonance frequencies of seismic wave damping structures may be predicted by calculation and an anti-resonance damping structure may be built to attenuate waves of primarily only specific resonance frequencies supported by the seismic wave damping structure.
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公开(公告)号：US10597839B2
公开(公告)日：2020-03-24
申请号：US16172717
申请日：2018-10-26
Applicant: Massachusetts Institute of Technology
Inventor： Robert W. Haupt , Mordechai Rothschild , Vladimir Liberman , Charles G. Doll, Jr. , Shaun R. Berry
Abstract: A seismic wave damping structure can include a structural arrangement including at least one pair of elements, each angled with respect to a vertical and extending into the earth and toward a protection zone. The elements thus form a tapered aperture, the structural arrangement defining the protection zone at an upper portion of the aperture. Each element defines an inner volume and contains a medium resistant to passage of an anticipated seismic wave in earth having a wavelength at least one order of magnitude greater than a cross-sectional dimension of the inner volume of each of the elements. The medium is at least one of air, gas, water, and viscous fluid. The structural arrangement is configured to attenuate power from the anticipated seismic wave within the protection zone relative to power from the anticipated seismic wave external to the protection zone.
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公开(公告)号：US20170167100A1
公开(公告)日：2017-06-15
申请号：US15380999
申请日：2016-12-15
Applicant: Massachusetts Institute of Technology
Inventor： Robert W. Haupt , Mordechai Rothschild , Vladimir Liberman , Charles G. Doll, JR. , Shaun R. Berry
CPC classification number: E02D5/22 , E02B17/0017 , E04H9/021 , E04H2009/026
Abstract: An elastic wave damping structure can include a structural arrangement of at least two elements, each with an inner volume and containing a medium resistant to passage of an elastic wave. Example elements can be earth boreholes or water pylons. The structural arrangement can taper from an upper aperture to a lower aperture, the structural arrangement defining a protection zone at the upper aperture. The structural arrangement can be configured to attenuate power from the anticipated elastic wave within the protection zone relative to power from the anticipated elastic wave external to the protection zone. A grouping may include elements that form acute or obtuse angles with a direction of an elastic wave to attenuate wave power. High-value buildings or other structure in a protection zone on land or in water can be substantially shielded from seismic or water waves.
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