Patents by Inventor Dana Dabiri
Dana Dabiri 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: 20230117049Abstract: A method for modulating the piasmonic resonance of a noble metal nanoparticle to enhance the luminescence of an oxygen sensitive dye; an oxygen sensitive composition that includes a nanostructure comprising a noble metal particle and an oxygen sensitive dye: a substrate having a surface coated with the oxygen sensitive composition; methods and sensors for determining oxygen concentration using the oxygen sensitive composition.Type: ApplicationFiled: February 11, 2021Publication date: April 20, 2023Applicant: University of WashingtonInventors: Dana Dabiri, Guozhong Cao, Wenwen Yin
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POLYMER-DISPERSED, LIQUID CRYSTAL FILMS AND SYSTEMS FOR SHEAR STRESS MEASUREMENT AND RELATED METHODS
Publication number: 20210173241Abstract: Films, systems, and methods for measuring shear stress are described. In an embodiment, the film comprises an optically transmissive polymer matrix disposed on a substrate; and a liquid crystal dispersed in the optically transmissive polymer matrix, wherein at least a portion of the liquid crystal protrudes from or is exposed on a side of the optically transmissive polymer matrix opposite the substrate.Type: ApplicationFiled: December 7, 2020Publication date: June 10, 2021Applicants: University of Washington, Kent State UniversityInventors: Dana Dabiri, John West, Junren Wang -
Publication number: 20140179019Abstract: Microbeads include small preformed microbead substrates, which may comprise, for example, silica particles having a characteristic dimension less than 2 millimeters. A plurality of luminophores are applied to an exposed surface of the microbead substrates, wherein the luminophores are selected for detecting pressure and/or temperature. A plurality of luminophores absorb light at a predetermined wavelength to transition to an excited state, and they luminesce at different wavelengths when returning to the ground state. The luminescence may be phosphorescence or fluorescence. In some embodiments the microbeads include at least one pressure-sensitive luminophore, at least one temperature-sensitive luminophore, and at least one reference luminophore that is neither pressure-sensitive nor temperature-sensitive. In some embodiments the microbeads are configured for use in digital particle image velocimetry.Type: ApplicationFiled: November 19, 2013Publication date: June 26, 2014Applicant: University of Washington through its Center for CommercializationInventors: Dana Dabiri, Gamal-Eddin Khalil
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Color-coded backlighted single camera three-dimensional defocusing particle image velocimetry system
Patent number: 8638358Abstract: Three-Dimensional Defocusing Particle Image Velocimetry (3DDPIV) allows for measurement of three-dimensional velocities within a volume. In the disclosed embodiment, a mask with a plurality of apertures is disposed with a lens between the test section and a color camera. The field-of-view is backlit and the test section is seeded with black particles. This configuration allows for a lower power light source as compared to conventional 3DDPIV. Color-coded particle images are formed on a white background, wherein each of the color images is generated from light that travels through the filters not blocked by the imaged particle, thereby producing a color image that is of a color different from the color of any of the filters. A color space linear transformation is used to allow for accurate identification of each pinhole exposure when the color filters' spectrum does not match those of the 3-CCD color camera.Type: GrantFiled: March 18, 2010Date of Patent: January 28, 2014Assignee: University of WashingtonInventors: Dana Dabiri, Wei-Hsin Tien, Patrick Kartes, Toru Yamasaki -
COLOR-CODED BACKLIGHTED SINGLE CAMERA THREE-DIMENSIONAL DEFOCUSING PARTICLE IMAGE VELOCIMETRY SYSTEM
Publication number: 20110025826Abstract: Three-Dimensional Defocusing Particle Image Velocimetry (3DDPIV) allows for measurement of three-dimensional velocities within a volume. In the disclosed embodiment, a mask with a plurality of apertures is disposed with a lens between the test section and a color camera. The field-of-view is backlit and the test section is seeded with black particles. This configuration allows for a lower power light source as compared to conventional 3DDPIV. Color-coded particle images are formed on a white background, wherein each of the color images is generated from light that travels through the filters not blocked by the imaged particle, thereby producing a color image that is of a color different from the color of any of the filters. A color space linear transformation is used to allow for accurate identification of each pinhole exposure when the color filters' spectrum does not match those of the 3-CCD color camera.Type: ApplicationFiled: March 18, 2010Publication date: February 3, 2011Applicant: UNIVERSITY OF WASHINGTONInventors: Dana Dabiri, Wei-Hsin Tien, Patrick Kartes, Toru Yamasaki -
Patent number: 7612869Abstract: A system and method for determining instantaneously the three-dimensional coordinates of large sets of points in space is disclosed. This system uses two or more CCD cameras (or any other type of camera), each with its own lens and pinhole. The CCD's are all arranged so that the pixel arrays are within the same plane. The CCD's are also arranged in a predefined pattern. The combination of the multiple images acquired from the CCD's onto one single image forms a pattern, which is dictated by the predefined arrangement of the CCD's. The size and centroid on the combined image are a direct measure of the depth location Z and in-plane position (X,Y), respectively. The use of a predefined pattern enables high speed computation through simple algorithmic procedures. Moreover, the use of CCD cameras allows for the recording of such datasets at the corresponding image frame rate, thus opening the use of the invention to the mapping of dynamical systems.Type: GrantFiled: February 28, 2006Date of Patent: November 3, 2009Assignee: California Institute Of TechnologyInventors: Francisco Pereira, Darius Modarress, Mory Gharib, Dana Dabiri, David Jeon
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Publication number: 20060209193Abstract: A system and method for determining instantaneously the three-dimensional coordinates of large sets of points in space is disclosed. This system uses two or more CCD cameras (or any other type of camera), each with its own lens and pinhole. The CCD's are all arranged so that the pixel arrays are within the same plane. The CCD's are also arranged in a predefined pattern. The combination of the multiple images acquired from the CCD's onto one single image forms a pattern, which is dictated by the predefined arrangement of the CCD's. The size and centroid on the combined image are a direct measure of the depth location Z and in-plane position (X,Y), respectively. The use of a predefined pattern enables high speed computation through simple algorithmic procedures. Moreover, the use of CCD cameras allows for the recording of such datasets at the corresponding image frame rate, thus opening the use of the invention to the mapping of dynamical systems.Type: ApplicationFiled: February 28, 2006Publication date: September 21, 2006Inventors: Francisco Pereira, Darius Modarress, Mory Gharib, Dana Dabiri, David Jeon
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Patent number: 7006132Abstract: Determining instantaneously the three-dimensional coordinates of large sets of points in space using two or more CCD cameras (or any other type of camera), each with its own lens and pinhole. The CCD's are all arranged so that the pixel arrays are within the same plane. The CCD's are also arranged in a predefined pattern. The combination of the multiple images acquired from the CCD's onto one single image forms a pattern, which is dictated by the predefined arrangement of the CCD's. The size and centroid on the combined image are a direct measure of the depth location Z and in-plane position (X,Y), respectively.Type: GrantFiled: August 21, 2001Date of Patent: February 28, 2006Assignee: California Institute of TechnologyInventors: Francisco Pereira, Darius Modarress, Mory Gharib, Dana Dabiri, David Jeon
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Publication number: 20020149691Abstract: A system and method for determining instantaneously the three-dimensional coordinates of large sets of points in space is disclosed. This system uses two or more CCD cameras (or any other type of camera), each with its own lens and pinhole. The CCD's are all arranged so that the pixel arrays are within the same plane. The CCD's are also arranged in a predefined pattern. The combination of the multiple images acquired from the CCD's onto one single image forms a pattern, which is dictated by the predefined arrangement of the CCD's. The size and centroid on the combined image are a direct measure of the depth location Z and in-plane position (X,Y), respectively. The use of a predefined pattern enables high speed computation through simple algorithmic procedures. Moreover, the use of CCD cameras allows for the recording of such datasets at the corresponding image frame rate, thus opening the use of the invention to the mapping of dynamical systems.Type: ApplicationFiled: August 21, 2001Publication date: October 17, 2002Inventors: Francisco Pereira, Darius Modarress, Mory Gharib, Dana Dabiri, David Jeon
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Patent number: 6278847Abstract: A three-dimensional imaging system uses apertures through which images are projected. The image through each aperture is obtained by a different camera element. The camera elements can be totally physically separate, multiple receiving parts of a single camera, or a single camera which is effectively spatially modulated so that the single camera receives different images at different times. The outputs from the camera are used to form three-dimensional information about the object.Type: GrantFiled: February 25, 1999Date of Patent: August 21, 2001Assignee: California Institute of TechnologyInventors: Morteza Gharib, Dana Dabiri, Darius Modares