Patents by Inventor Alexander Yutong Zhu
Alexander Yutong Zhu 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).
-
Publication number: 20240151876Abstract: An optical metasurface includes a substrate and a plurality of nanostructures extending from a surface of the substrate and constructed of a material having an index of refraction. The plurality of nanostmctures are arranged in a plurality of unit cells comprising a dimension that is less than or equal to twice an effective wavelength of light incident on the optical metasurface, divided by the sinusoid of a deflection angle that the optical metasurface is designed to deflect the light. The plurality of nanostructures are asymmetrically arranged along a deflection direction. A unit cell aspect ratio of the plurality of nanostmctures is greater than or equal to 3, and a product of the unit cell aspect ratio and the index of refraction of the material is greater than or equal to 8.Type: ApplicationFiled: March 3, 2022Publication date: May 9, 2024Inventors: Cameron Robert Nelson, Alexander Yutong Zhu
-
Patent number: 11977221Abstract: An optical device for aberration correction (e.g., chromatic aberration correction) is disclosed. The optical device includes an optical component (e.g., a spherical lens) and a metasurface optically coupled to the optical component. The metasurface includes a plurality of nanostructures that define a phase profile. The phase profile corrects an aberration (e.g., chromatic aberration) caused by the optical component. The resulting optical device becomes diffraction-limited (e.g., for the visible spectrum) with the metasurface.Type: GrantFiled: February 19, 2019Date of Patent: May 7, 2024Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei-Ting Chen, Alexander Yutong Zhu, Jared F. G. Sisler, Federico Capasso
-
Patent number: 11320641Abstract: The optical imaging apparatus includes a metasurface lens including a substrate and a plurality of nano-structures patterned on a first side of the substrate. The optical imaging apparatus further includes imaging optics disposed in a spaced apart relationship with a second side of the substrate. The second side is opposite the first side on which the nano-structures are patterned. A surface of the imaging optics and the second side of the substrate define a space for accommodating an immersion fluid. The metasurface lens is configured to direct light incident on the plurality of nano-structures towards the imaging optics through the space accommodating the immersion fluid.Type: GrantFiled: March 29, 2018Date of Patent: May 3, 2022Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei-Ting Chen, Alexander Yutong Zhu, Mohammadreza Khorasaninejad, Zhujun Shi, Federico Capasso, Vyshakh Sanjeev
-
Publication number: 20220048764Abstract: Polarization-insensitive metasurfaces using anisotropic nanostructures are disclosed. These anisotropic structures allow for an accurate implementation of phase, group delay, and group delay dispersion, while simultaneously making it possible to realize a polarizationinsensitive, diffraction-limited and achromatic metalens for wavelength, e.g., ?=from about 460 nm to about 700 nm. The approach of polarization-insensitivity can be also applied for other metasurface devices with applications in, e.g., imaging and virtual or augmented reality.Type: ApplicationFiled: September 24, 2019Publication date: February 17, 2022Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei-Ting CHEN, Alexander Yutong ZHU, Federico CAPASSO
-
Patent number: 11194082Abstract: An optical device includes: (1) a substrate; and (2) multiple meta-lenses disposed on the substrate, each meta-lens of the meta-lenses including multiple nanofins disposed on a respective region of the substrate, the nanofins together specifying a phase profile of the meta-lens.Type: GrantFiled: December 19, 2017Date of Patent: December 7, 2021Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Alexander Yutong Zhu, Wei-Ting Chen, Mohammadreza Khorasaninejad, Jaewon Oh, Muhammad Aun Abbas Zaidi, Robert C. Devlin, Federico Capasso
-
Patent number: 11092717Abstract: A meta-lens having a phase profile includes a substrate and a plurality of nanostructures disposed on the substrate. Each individual nanostructure of the nanostructures imparts a light phase shift that varies depending on a location of the individual nanostructure on the substrate. The light phase shifts of the nanostructures define the phase profile of the meta-lens. The varying light phase shifts can be realized by, e.g., changing orientations of nanofins or changing diameters of nanopillars.Type: GrantFiled: April 5, 2017Date of Patent: August 17, 2021Assignee: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Federico Capasso, Wei-Ting Chen, Robert C. Devlin, Mohammadreza Khorasaninejad, Jaewon Oh, Alexander Yutong Zhu, Charles Roques-Carmes, Ishan Mishra
-
Publication number: 20210149082Abstract: An optical device comprises a metasurface including a plurality of nanostructures. The nanostructures define a phase profile and a group delay profile at a design wavelength. The phase profile and the group delay profile determine and control the functionalities and the chromatic dispersion of the metasurface.Type: ApplicationFiled: May 31, 2018Publication date: May 20, 2021Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei Ting CHEN, Vyshakh SANJEEV, Alexander Yutong ZHU, Mohammadreza KHORASANINEJAD, Zhujun SHI, Federico CAPASSO
-
Publication number: 20210132272Abstract: An optical device includes: (1) a substrate; and (2) multiple meta-lenses disposed on the substrate, each meta-lens of the meta-lenses including multiple nanofins disposed on a respective region of the substrate, the nanofins together specifying a phase profile of the meta-lens.Type: ApplicationFiled: December 19, 2017Publication date: May 6, 2021Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Alexander Yutong ZHU, Wei Ting CHEN, Mohammadreza KHORASANINEJAD, Jaewon OH, Aun ZAIDI, Robert Charles DEVLIN, Federico CAPASSO
-
Publication number: 20210103141Abstract: An optical device for aberration correction (e.g., chromatic aberration correction) is disclosed. The optical device includes an optical component (e.g., a spherical lens) and a metasurface optically coupled to the optical component. The metasurface includes a plurality of nanostructures that define a phase profile. The phase profile corrects an aberration (e.g., chromatic aberration) caused by the optical component. The resulting optical device becomes diffraction-limited (e.g., for the visible spectrum) with the metasurface.Type: ApplicationFiled: February 19, 2019Publication date: April 8, 2021Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei-Ting CHEN, Alexander Yutong ZHU, Jared F.G. SISLER, Federico CAPASSO
-
Patent number: 10802018Abstract: Multimodal biosensor devices are disclosed. A device may include at least two sensors selected from: (i) a nanomechanical resonator; (ii) plasmonic nanodisk antennae; and (iii) a field effect transistor. The biosensor device is capable of transducing the adsorption of biomolecules onto the biosensor device into optical, electrical and/or mechanical signals.Type: GrantFiled: November 4, 2015Date of Patent: October 13, 2020Assignee: The Trustees of the University of PennsylvaniaInventors: Ertugrul Cubukcu, Alexander Yutong Zhu, Fei Yi
-
Publication number: 20200103640Abstract: An optical imaging apparatus is disclosed. The optical imaging apparatus includes a metasurface lens including a substrate and a plurality of nano-structures patterned on a first side of the substrate. The optical imaging apparatus further includes imaging optics disposed in a spaced apart relationship with a second side of the substrate. The second side is opposite the first side on which the nano-structures are patterned. A surface of the imaging optics and the second side of the substrate define a space for accommodating an immersion fluid. The metasurface lens is configured to direct light incident on the plurality of nano-structures towards the imaging optics through the space accommodating the immersion fluid.Type: ApplicationFiled: March 29, 2018Publication date: April 2, 2020Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei Ting CHEN, Alexander Yutong ZHU, Mohammadreza KHORASANINEJAD, Zhujun SHI, Federico CAPASSO, Vyshakh SANJEEV
-
Publication number: 20190235139Abstract: An optical device comprises a substrate and a metasurface. The metasurface comprises a plurality of nanoscale elements disposed on the transparent substrate at different orientations. The orientations of the nanoscale elements define a phase profile such that the nanoscale elements convert an incident light into an output light propagating substantially without diffraction.Type: ApplicationFiled: October 13, 2017Publication date: August 1, 2019Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Wei-Ting CHEN, Mohammadreza KHORASANINEJAD, Alexander Yutong ZHU, Jaewon OH, Robert Charles DEVLIN, Muhammad Aun Abbas ZAIDI, Federico CAPASSO
-
Publication number: 20160123973Abstract: Multimodal biosensor devices are disclosed. A device may include at least two sensors selected from: (i) a nanomechanical resonator; (ii) plasmonic nanodisk antennae; and (iii) a field effect transistor. The biosensor device is capable of transducing the adsorption of biomolecules onto the biosensor device into optical, electrical and/or mechanical signals.Type: ApplicationFiled: November 4, 2015Publication date: May 5, 2016Applicant: The Trustees of the University of PennsylvaniaInventors: Ertugrul Cubukcu, Alexander Yutong Zhu, Fei Yi