Patents by Inventor Ashraful Alam

Ashraful Alam 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).

  • Patent number: 12325876
    Abstract: A process and device for electrostatically controlling an ionic environment in a droplet, such as in a droplet-based platform including polymerase-chain reaction (PCR) applications. The process includes providing a chip that comprises at least a pair of electrodes, placing a salt-containing droplet on the chip, and then applying a bias across the electrodes to accumulate ions near surfaces of the electrodes, thereby depleting a bulk salt concentration in regions of the droplet away from the electrodes.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: June 10, 2025
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Muhammad Ashraful Alam, Piyush Dak
  • Publication number: 20230273200
    Abstract: An electrochemical biosensor for detection of a calprotectin antigen in a sample solution. The electrochemical biosensor includes a reference electrode, a counter electrode, and a working electrode. The working electrode includes a surface coated with an anti-calprotectin antibody that binds to the calprotectin antigen in the sample solution. The electrochemical biosensor detects the concentration of the calprotectin antigen in the sample solution based on a resistance change at the surface of the working electrode.
    Type: Application
    Filed: August 11, 2021
    Publication date: August 31, 2023
    Inventors: Muhammad Ashraful ALAM, Marco FRATUS, Rahim RAHIMI, Vidhya SELVAMANI, Mohit Singh VERMA, Jiangshan WANG
  • Patent number: 11515057
    Abstract: Hybrid transparent conducting materials are disclosed which combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and the conductive nanostructures preferably are silver nanowires.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: November 29, 2022
    Assignee: Purdue Research Foundation
    Inventors: Muhammad Ashraful Alam, Ruiyi Chen, Suprem R. Das, David B. Janes, Changwook Jeong, Mark Lundstrom
  • Patent number: 11468656
    Abstract: A method comprising identifying a plurality of non-overlapping coarse domains of a region of interest; selecting a subset of the plurality of coarse domains based on a plurality of first diversity metrics determined for the plurality of coarse domains; identifying a plurality of non-overlapping fine domains of the region of interest, wherein each of the fine domains is a portion of one of the coarse domains of the selected subset of the plurality of coarse domains; selecting a subset of the plurality of fine domains based on a plurality of second diversity metrics determined for the plurality of coarse domains; and providing an indication of the selected subset of the plurality of fine domains.
    Type: Grant
    Filed: June 29, 2019
    Date of Patent: October 11, 2022
    Assignee: Intel Corporation
    Inventors: Bikram Baidya, Prasad N. Atkar, Vivek K. Singh, Md Ashraful Alam
  • Publication number: 20220219473
    Abstract: Methods for fabricating printed devices and monitoring one or more performance characteristics of the printed devices during their fabrication in a high-speed process. Such a method includes developing a physics-based model of at least a first component of the printed devices, fabricating the printed devices with the high-speed process using fabrication steps that comprise depositing the first components, acquiring a physical characteristic of a plurality of the first components of a plurality of the printed devices following the depositing of the first components, predicting a performance characteristic of the printed devices based on the physics-based model of the first component and the physical characteristic acquired of the plurality of the first components; and then modifying at least one of the fabrication steps performed during the fabricating of a subsequently-fabricated group of the printed devices to adjust the performance characteristic of the subsequently-fabricated group of the printed devices.
    Type: Application
    Filed: January 11, 2022
    Publication date: July 14, 2022
    Inventors: Jan P. Allebach, Muhammad Ashraful Alam, Rahim Rahimi, Babak Ziaie, Ali Shakouri, Mukerrem Cakmak, Nicholas Glassmaker, Xihui Wang, Qinyu Yang
  • Publication number: 20210243770
    Abstract: A method, computer program and circuitry configured to manage resources within a radio access network. The managing of the resources is performed by distributing at least some of a plurality of resources into a plurality of pools of resources, each of the pools of resources being configured to provide data handling for a different predetermined function, each predetermined function relating to a particular service provided by the radio access network.
    Type: Application
    Filed: May 8, 2018
    Publication date: August 5, 2021
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Horst Roessler, Rupert Rheinschmitt, Ashraful Alam
  • Publication number: 20210139942
    Abstract: A method and apparatus for electrically monitoring a time-varying liquid droplet whose conductivity is continuously modulated by osmoregulation response of cells. According to the method, the droplet impedance or conductance is monitored over time as the droplet shrinks due to evaporation. The monitoring data is then compared to calibration data which is obtained by monitoring a reference droplet. The result of the comparison is then used to determine the concentration of viable (live) biological material contained in the droplet.
    Type: Application
    Filed: April 30, 2020
    Publication date: May 13, 2021
    Applicant: Purdue Research Foundation
    Inventors: SeyedehAida Ebrahimi, Muhammad Ashraful Alam
  • Publication number: 20210118588
    Abstract: Hybrid transparent conducting materials are disclosed which combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and the conductive nanostructures preferably are silver nanowires.
    Type: Application
    Filed: October 5, 2020
    Publication date: April 22, 2021
    Inventors: Muhammad Ashraful ALAM, Ruiyi CHEN, Suprem R. DAS, David B. JANES, Changwook JEONG, Mark LUNDSTROM
  • Patent number: 10839974
    Abstract: Hybrid transparent conducting materials are disclosed with combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and conductive nanostructures preferably are silver nanowires.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: November 17, 2020
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Muhammad Ashraful Alam, Ruiyi Chen, Suprem R. Das, David B. Janes, Changwook Jeong, Mark Lundstrom
  • Publication number: 20200248230
    Abstract: A process and device for electrostatically controlling an ionic environment in a droplet, such as in a droplet-based platform including polymerase-chain reaction (PCR) applications. The process includes providing a chip that comprises at least a pair of electrodes, placing a salt-containing droplet on the chip, and then applying a bias across the electrodes to accumulate ions near surfaces of the electrodes, thereby depleting a bulk salt concentration in regions of the droplet away from the electrodes.
    Type: Application
    Filed: September 4, 2019
    Publication date: August 6, 2020
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Muhammad Ashraful Alam, Piyush Dak
  • Publication number: 20200105434
    Abstract: Hybrid transparent conducting materials are disclosed with combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and conductive nanostructures preferably are silver nanowires.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 2, 2020
    Inventors: Muhammad Ashraful ALAM, Ruiyi CHEN, Suprem R. DAS, David B. JANES, Changwook JEONG, Mark LUNDSTROM
  • Patent number: 10468151
    Abstract: Hybrid transparent conducting materials are disclosed with combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and conductive nanostructures preferably are silver nanowires.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 5, 2019
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Muhammad Ashraful Alam, Ruiyi Chen, Suprem R. Das, David B. Janes, Changwook Jeong, Mark Lundstrom
  • Publication number: 20190325246
    Abstract: A method comprising identifying a plurality of non-overlapping coarse domains of a region of interest; selecting a subset of the plurality of coarse domains based on a plurality of first diversity metrics determined for the plurality of coarse domains; identifying a plurality of non-overlapping fine domains of the region of interest, wherein each of the fine domains is a portion of one of the coarse domains of the selected subset of the plurality of coarse domains; selecting a subset of the plurality of fine domains based on a plurality of second diversity metrics determined for the plurality of coarse domains; and providing an indication of the selected subset of the plurality of fine domains.
    Type: Application
    Filed: June 29, 2019
    Publication date: October 24, 2019
    Inventors: Bikram Baidya, Prasad N. Atkar, Vivek K. Singh, Md Ashraful Alam
  • Patent number: 10312342
    Abstract: An electrical circuit comprising at least two negative capacitance insulators connected in series, one of the two negative capacitance insulators is biased to generate a negative capacitance. One of the negative capacitance insulators may include an air-gap which is part of a nanoelectromechnical system (NEMS) device and the second negative capacitance insulator includes a ferroelectric material. Both of the negative capacitance insulators may be located between the channel and gate of a field effect transistor. The NEMS device may include a movable electrode, a dielectric and a fixed electrode and arranged so that the movable electrode is attached to at least two points and spaced apart from the dielectric and fixed electrode, and the ferroelectric capacitor is electrically connected to either of the electrodes.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: June 4, 2019
    Assignee: Purdue Research Foundation
    Inventors: Muhammad Ashraful Alam, Muhammad Masuduzzaman, Ankit Jain
  • Publication number: 20180090009
    Abstract: The present disclosure relates to a method for controlling a first device (101A). The method comprises: collecting a first set of data using a first type of sensors of the first device (101A). A second set of data of a second type of sensors may be received from at least another second device (101B-107) over a communication channel. The first and second sets of data may be combined for determining a current vehicle traffic configuration. The first device (101A) may be controlled in accordance with the current vehicle traffic configuration.
    Type: Application
    Filed: September 25, 2017
    Publication date: March 29, 2018
    Applicant: Alcatel Lucent
    Inventors: Horst Roessler, Md Ashraful Alam, Fariborz Derakhshan, Peter Schefczik
  • Publication number: 20180012972
    Abstract: An electrical circuit comprising at least two negative capacitance insulators connected in series, one of the two negative capacitance insulators is biased to generate a negative capacitance. One of the negative capacitance insulators may include an air-gap which is part of a nanoelectromechnical system (NEMS) device and the second negative capacitance insulator includes a ferroelectric material. Both of the negative capacitance insulators may be located between the channel and gate of a field effect transistor. The NEMS device may include a movable electrode, a dielectric and a fixed electrode and arranged so that the movable electrode is attached to at least two points and spaced apart from the dielectric and fixed electrode, and the ferroelectric capacitor is electrically connected to either of the electrodes.
    Type: Application
    Filed: September 5, 2017
    Publication date: January 11, 2018
    Applicant: Purdue Research Foundation
    Inventors: Muhammad Ashraful Alam, Muhammad Masuduzzaman, Ankit Jain
  • Patent number: 9755041
    Abstract: An electrical circuit comprising at least two negative capacitance insulators connected in series, one of the two negative capacitance insulators is biased to generate a negative capacitance. One of the negative capacitance insulators may include an air-gap which is part of a nanoelectromechnical system (NEMS) device and the second negative capacitance insulator includes a ferroelectric material. Both of the negative capacitance insulators may be located between the channel and gate of a field effect transistor. The NEMS device may include a movable electrode, a dielectric and a fixed electrode and arranged so that the movable electrode is attached to at least two points and spaced apart from the dielectric and fixed electrode, and the ferroelectric capacitor is electrically connected to either of the electrodes.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: September 5, 2017
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Muhammad Ashraful Alam, Muhammad Masuduzzaman, Ankit Jain
  • Publication number: 20170098486
    Abstract: Hybrid transparent conducting materials are disclosed with combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and conductive nanostructures preferably are silver nanowires.
    Type: Application
    Filed: October 24, 2016
    Publication date: April 6, 2017
    Inventors: Muhammad Ashraful ALAM, Ruiyi CHEN, Suprem R. DAS, David B. JANES, Changwook JEONG
  • Publication number: 20170081696
    Abstract: A method and apparatus for electrically monitoring a time-varying liquid droplet whose conductivity is continuously modulated by osmoregulation response of cells. According to the method, the droplet impedance or conductance is monitored over time as the droplet shrinks due to evaporation. The monitoring data is then compared to calibration data which is obtained by monitoring a reference droplet. The result of the comparison is then used to determine the concentration of viable (live) biological material contained in the droplet.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 23, 2017
    Applicant: Purdue Research Foundation
    Inventors: SeyedehAida Ebrahimi, Muhammad Ashraful Alam
  • Patent number: 9536692
    Abstract: A microelectromechanical system (MEMS)-based electrical switch. The electrical switch includes a moveable electrode, a dielectric layer positioned adjacent the moveable electrode on a first side of the dielectric layer and spaced apart from the moveable electrode when the moveable electrode is in an inactivated position and in contact with the moveable electrode when the moveable electrode is in an activated position, and a substrate attached to the dielectric layer on a second side opposite to the first side, the moveable electrode is configured to brake prior to coming in contact with the dielectric layer when the moveable electrode is switched between the inactivated state and the activated state.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: January 3, 2017
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Ankit Jain, Muhammad Ashraful Alam, Pradeep Nair