Patents by Inventor Subra Suresh

Subra Suresh 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: 20250107925
    Abstract: Disclosed herein is a conductive composite material, comprising a pollen-based substrate layer, an elastomeric adhesive layer on top of the pollen-based substrate layer, a biocompatible polymer substrate layer on top of the elastomeric adhesive layer, and a metal layer on top of the biocompatible polymer substrate layer and a method of forming the same. Also disclosed herein is a stretchable biopolymer-based heating pad comprising a pollen-based substrate layer, a cured polymeric layer or a metal layer on top of the pollen-based substrate layer, where, when present, the cured polymeric layer comprises a cured polymeric material and a metal, an encapsulation coating comprising a polymeric material that encapsulates the cured polymeric layer or the metal layer, wherein the pollen-based substrate layer and the cured polymeric layer are patterned to provide a heating pad and the method of forming the same.
    Type: Application
    Filed: January 5, 2023
    Publication date: April 3, 2025
    Inventors: Nam-Joon CHO, Subra SURESH, Chi Hwan LEE, Youngkyu HWANG, Min Ku KIM
  • Patent number: 12077428
    Abstract: Compositions and methods related to multiaxially straining defect doped materials as well as their use in electrical circuits are generally described.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: September 3, 2024
    Assignees: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Subra Suresh, Ming Dao, Ju Li, Zhe Shi
  • Patent number: 11996446
    Abstract: Compositions and methods related to straining defect doped materials as well as their methods of use in electrical circuits are generally described.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: May 28, 2024
    Assignees: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Ming Dao, Ju Li, Zhe Shi, Subra Suresh
  • Publication number: 20240161307
    Abstract: Methods and systems for estimating fluid flow characteristics are provided. In one embodiment, a method is provided that includes receiving a plurality of images of fluid flow at a plurality of times. The images may be analyzed with a machine learning model to predict one or more physical characteristics of the fluid flow, such as a velocity field, a pressure field, and/or a stress field. A loss measure may be calculated for the physical characteristics based on physical fluid flow constraints, boundary condition constraints, and/or data mismatch constraints. The machine learning model may be updated based on the loss value.
    Type: Application
    Filed: March 17, 2022
    Publication date: May 16, 2024
    Inventors: Ming Dao, Subra Suresh, George Karniadakis, Shengze Cai, He Li
  • Publication number: 20240158988
    Abstract: A pollen paper formed from a plurality of pollen microgels, which paper is dimensionally locked for use in the generation of conventional printed matter. It is possible to remove the printed subject matter from the pollen paper by a process that involves immersing the pollen paper into an alkaline bath, then removing the water through immersing it in a dehydrating bath and finally dimensionally locking the paper by immersing it in an acidic bath.
    Type: Application
    Filed: March 16, 2022
    Publication date: May 16, 2024
    Inventors: Nam-Joon CHO, Ze ZHAO, Subra SURESH
  • Publication number: 20240150959
    Abstract: Disclosed herein is a hygromorphic composite material comprising a moisture-active pollen paper substrate formed from a plurality of pollen microgel particles, and at least one moisture-inactive layer applied onto the top and/or bottom surface of the moisture-active pollen paper substrate with a pattern that causes the hygromorphic composite material to change its shape in a pre-determined manner due to a change in relative humidity of its ambient environment. Also disclosed herein is a method of forming the hygromorphic composite material.
    Type: Application
    Filed: March 16, 2022
    Publication date: May 9, 2024
    Inventors: Nam-Joon CHO, Ze ZHAO, Subra SURESH
  • Patent number: 11772323
    Abstract: There is provided a method of forming a 3-dimensional structure from a hydrogel, the process comprising the steps of: (a) placing a hydrogel polymerisation solution into a reaction vessel, and (b) allowing the hydrogel polymerisation solution to react without mixing for a period of time at ambient temperature, while introducing a polymerisation modulator to the reaction solution through a reaction solution/polymerisation modulator interface, wherein over the period of time, a modulation effect gradient is established in the reaction solution, where the modulation effect has a maximal value at the reaction solution/polymerisation modulator interface and a minimal value at a point furthest away from said interface. The said method additionally includes the use of physical constraint members such as wires and/or threads.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 3, 2023
    Assignees: CARNEGIE MELLON UNIVERSITY, NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Kuen Jimmy Hsia, Changjin Huang, Subra Suresh
  • Patent number: 11461519
    Abstract: Methods and apparatus for extracting one or more mechanical properties for a material based on one or more indentation parameters for the material. The method comprises receiving load-displacement data from one or more instrumented indentation tests on the material, determining, by at least one computer processor, the indentation parameters for the material based, at least in part, on the received load-displacement data, providing as input to a trained neural network, the indentation parameters for the material, determining, based on an output of the trained neural network, the one or more mechanical properties of the material, and displaying an indication of the determined one or more mechanical properties of the material to a user of the computer system.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: October 4, 2022
    Assignees: Nanyang Technological University, Massachusetts Institute of Technology, Brown University
    Inventors: Lu Lu, Ming Dao, Subra Suresh, George Karniadakis
  • Publication number: 20220207218
    Abstract: Methods and apparatus for extracting one or more mechanical properties for a material based on one or more indentation parameters for the material. The method comprises receiving load-displacement data from one or more instrumented indentation tests on the material, determining, by at least one computer processor, the indentation parameters for the material based, at least in part, on the received load-displacement data, providing as input to a trained neural network, the indentation parameters for the material, determining, based on an output of the trained neural network, the one or more mechanical properties of the material, and displaying an indication of the determined one or more mechanical properties of the material to a user of the computer system.
    Type: Application
    Filed: March 6, 2020
    Publication date: June 30, 2022
    Applicants: Nanyang Technological University, Massachusetts Institute of Technology, Brown University
    Inventors: Lu Lu, Ming Dao, Subra Suresh, George Karniadakis
  • Publication number: 20220067247
    Abstract: Methods for training statistical models for modeling phononic energy and/or frequency dispersion, as well as phononic stability of materials as a function of an applied strain, as well as uses of these trained statistical models for elastic strain engineering of materials, are described.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 3, 2022
    Applicants: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Subra Suresh, Ming Dao, Ju Li, Zhe Shi
  • Publication number: 20220063986
    Abstract: Compositions and methods related to multiaxially straining defect doped materials as well as their use in electrical circuits are generally described.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 3, 2022
    Applicants: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Subra Suresh, Ming Dao, Ju Li, Zhe Shi
  • Publication number: 20220037469
    Abstract: Compositions and methods related to straining defect doped materials as well as their methods of use in electrical circuits are generally described.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 3, 2022
    Applicants: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Ming Dao, Ju Li, Zhe Shi, Subra Suresh
  • Publication number: 20210398018
    Abstract: Methods for training statistical models for the bandgap and energy dispersion of materials as a function of an applied strain, as well as uses of these trained statistical models for elastic strain engineering of materials, are described.
    Type: Application
    Filed: October 12, 2018
    Publication date: December 23, 2021
    Applicants: Massachusetts Institute of Technology, Skolkovo Institute of Science and Technology, Nanyang Technological University
    Inventors: Ming Dao, Ju Li, Zhe Shi, Evgenii Tsymbalov, Alexander Shapeev, Subra Suresh
  • Patent number: 11121219
    Abstract: Compositions and methods related to straining defect doped materials as well as their methods of use in electrical circuits are generally described.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: September 14, 2021
    Assignees: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Ming Dao, Ju Li, Zhe Shi, Subra Suresh
  • Publication number: 20210175335
    Abstract: Compositions and methods related to straining defect doped materials as well as their methods of use in electrical circuits are generally described.
    Type: Application
    Filed: September 27, 2019
    Publication date: June 10, 2021
    Applicants: Massachusetts Institute of Technology, Nanyang Technological University
    Inventors: Ming Dao, Ju Li, Zhe Shi, Subra Suresh
  • Publication number: 20200376747
    Abstract: There is provided a method of forming a 3-dimensional structure from a hydrogel, the process comprising the steps of: (a) placing a hydrogel polymerisation solution into a reaction vessel, and (b) allowing the hydrogel polymerisation solution to react without mixing for a period of time at ambient temperature, while introducing a polymerisation modulator to the reaction solution through a reaction solution/polymerisation modulator interface, wherein over the period of time, a modulation effect gradient is established in the reaction solution, where the modulation effect has a maximal value at the reaction solution/polymerisation modulator interface and a minimal value at a point furthest away from said interface. The said method additionally includes the use of physical constraint members such as wires and/or threads.
    Type: Application
    Filed: December 14, 2018
    Publication date: December 3, 2020
    Inventors: Kuen Jimmy HSIA, Changjin HUANG, Subra SURESH
  • Publication number: 20190031999
    Abstract: Methods and devices for manipulating one or more particles (e.g., cells) in three dimensions using surface acoustic waves is described. Methods and devices for printing or more biological cells onto a substrate using surface acoustic waves are also provided.
    Type: Application
    Filed: January 20, 2017
    Publication date: January 31, 2019
    Applicants: Carnegie Mellon University, The Penn State Research Foundation, Massachusetts Institute of Technology
    Inventors: Subra Suresh, Feng Guo, Zhangming Mao, Ming Dao, Tony Jun Huang
  • Publication number: 20180267021
    Abstract: The invention in some aspects relates to high throughput methods and devices for evaluating mechanical, morphological, kinetic, rheological or hematological properties of cells, such as blood cells under regulated gas conditions. In some aspects, the invention relates to methods and devices for diagnosing and/or characterizing a condition or disease in a subject by measuring a property of a cell from the subject, under controlled gas conditions.
    Type: Application
    Filed: December 4, 2015
    Publication date: September 20, 2018
    Applicants: Carnegie Mellon University, Massachusetts Institute of Technology
    Inventors: Subra SURESH, E. DU, Monica DIEZ SILVA, Ming DAO
  • Publication number: 20170232439
    Abstract: An apparatus for sorting cells from a mixed population of cells using surface acoustic waves is described. Methods for separating cancer cells from a mixed population of cells are provided. Methods for separating cells or particles having different size, density and/or compressibility properties are also provided.
    Type: Application
    Filed: August 11, 2015
    Publication date: August 17, 2017
    Applicants: Carnegie Mellon University, Massachusetts Institute of Technology, The Penn State Research Foundation
    Inventors: Subra Suresh, Peng Li, Ming Dao, Yuchao Chen, Xiaoyun Ding, Tony Jun Huang, Zhangli Peng
  • Patent number: 9134294
    Abstract: The method and apparatus of the present invention detects changes in cell biomechanics caused by any of a variety of diseases and conditions. In one embodiment, the method and apparatus of the invention detect infection of red blood cells. In one embodiment, the invention is a method and apparatus comprising a microfluidic channel with a constriction, for trapping infected red blood cells while allowing healthy red blood cells to deform and pass through the channel. In another embodiment, the invention comprises a suspended microchannel resonator for detecting and counting red blood cells at the constriction of the microfluidic channel.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: September 15, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Scott Manalis, Thomas Burg, Subra Suresh, Ken Babcock