Patents by Inventor Benjamin Wunsch

Benjamin Wunsch 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: 12502666
    Abstract: Techniques regarding microfluidic chips with one or more vias filled with sacrificial plugs and/or manufacturing methods thereof are provided herein. For example, one or more embodiments described herein can comprise an apparatus, which can comprise a silicon device layer of a microfluidic chip comprising a plurality of vias extending through the silicon device layer. The plurality of vias comprise greater than or equal to about 100 vias per square centimeter of a surface of the silicon device layer and less than or equal to about 100,000 vias per square centimeter of the surface of the silicon device layer. Additionally, the apparatus can comprise a plurality of sacrificial plugs positioned in the plurality of vias.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: December 23, 2025
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joshua T. Smith, Robert Bruce, Jyotica V. Patel, Benjamin Wunsch
  • Patent number: 12403470
    Abstract: Techniques regarding nanofluidic chips with a plurality of inlets and/or outlets in fluid communication with one or more nanoDLD arrays are provided. For example, one or more embodiments described herein can comprise a nanoscale deterministic lateral displacement array between and in fluid communication with a global inlet and a global outlet. The nanoscale deterministic lateral displacement array can further be between and in fluid communication with a local inlet and a local outlet. Also, the nanoscale deterministic lateral displacement array can laterally displace a particle comprised within a sample fluid supplied from the global inlet to a collection region that directs the particle to the local outlet. An advantage of such an apparatus can be the expanded versatility of the nanoscale deterministic lateral displacement array for sample preparation applications involving nanoparticles not accessible to other higher throughput microscale microfluidic technologies.
    Type: Grant
    Filed: October 17, 2023
    Date of Patent: September 2, 2025
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joshua T. Smith, Benjamin Wunsch, Stacey Gifford
  • Patent number: 12194465
    Abstract: Techniques regarding one or more structures that can facilitate automated, multi-stage processing of one or more nanofluidic chips are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a roller positioned adjacent to a microfluidic card comprising a plurality of fluid reservoirs in fluid communication with a plurality of nanofluidic chips. An arrangement of the plurality of nanofluidic chips on the microfluidic card can defines a processing sequence driven by a translocation of the roller across the microfluidic card.
    Type: Grant
    Filed: December 6, 2022
    Date of Patent: January 14, 2025
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Benjamin Wunsch, Joshua T. Smith, Stacey Gifford, Sung-Cheol Kim
  • Patent number: 12129515
    Abstract: Techniques regarding screening for mutations using nanoscale deterministic arrays are provided. For example, one or more embodiments described herein can comprise a method, which can comprise cleaving a deoxyribonucleic acid segment hybridized with a molecular probe to form a sample fluid. The cleaving can occur at a first end and a second end of the molecular probe. Also, the cleaving can comprise a cleaving agent that targets base pair mismatches. The method can also comprise supplying the sample fluid to a nanoscale deterministic lateral displacement array to screen for a single nucleotide polymorphism.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: October 29, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stacey Gifford, Benjamin Wunsch, Joshua T. Smith, Sung-Cheol Kim
  • Patent number: 12042770
    Abstract: An exemplary method includes forming a sacrificial layer along sidewalls of an array of trenches that are indented into a substrate, depositing a fill layer over the sacrificial layer, and then creating an array of gaps between the fill layer and the substrate by removing the sacrificial layer along the sidewalls of the trenches, while maintaining a structural connection between the substrate and the fill layer at the floors of the trenches. The method further includes covering the substrate, the fill layer, and the gaps with a cap layer that seal fluid-tight against the substrate and the fill layer. The method further includes indenting a first reservoir and a second reservoir through the cap layer, and into the substrate and the fill layer, across the lengths of the array of gaps, so that the array of gaps connects the first reservoir in fluid communication with the second reservoir.
    Type: Grant
    Filed: November 7, 2021
    Date of Patent: July 23, 2024
    Assignee: International Business Machines Corporation
    Inventors: Joshua T. Smith, Stacey Gifford, Sung-Cheol Kim, Benjamin Wunsch
  • Patent number: 12011679
    Abstract: A fluidic processor device and a wafer including the same, the device including a nanofluidic separator chip including a nanoDLD array, a housing for housing the chip including a top plate disposed on a topside of the chip, a bottom plate disposed on a backside of the chip and fastened to the top plate, and a spacer disposed between the chip and the bottom plate to create a clearance between the chip and the bottom plate for forming a drain space on the backside of the chip.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 18, 2024
    Assignee: International Business Machines Corporation
    Inventors: Stacey Gifford, Sung-Cheol Kim, Joshua Smith, Benjamin Wunsch
  • Patent number: 11992837
    Abstract: A method for fabricating a fluidic device includes depositing a sacrificial material on a pillar array arranged on a substrate. The method also includes removing a portion of the sacrificial material. The method further includes depositing a sealing layer on the pillar array to form a sealed fluidic cavity.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: May 28, 2024
    Assignee: International Business Machines Corporation
    Inventors: Evan Colgan, Joshua T. Smith, Benjamin Wunsch
  • Patent number: 11911762
    Abstract: Techniques regarding integrated purification-detection devices for detecting one or more biomarkers are provided. For example, one or more embodiments described herein are directed to an apparatus, comprising a housing and a microfluidic chip contained within the housing. The microfluidic chip comprises a separation unit that separates, using one or more nano deterministic lateral displacement (nanoDLD) arrays, target biological entities having a defined size range from other biological entities included in a biological fluid sample. The microfluidic chip further comprises a detection unit that facilitates detecting presence of one or more biomarkers associated with the target biological entities using one or more detection molecules or macromolecules that chemically reacts with the one or more biomarkers.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: February 27, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joshua T. Smith, Benjamin Wunsch, Stacey Gifford, Sung-Cheol Kim
  • Publication number: 20240042437
    Abstract: Techniques regarding nanofluidic chips with a plurality of inlets and/or outlets in fluid communication with one or more nanoDLD arrays are provided. For example, one or more embodiments described herein can comprise a nanoscale deterministic lateral displacement array between and in fluid communication with a global inlet and a global outlet. The nanoscale deterministic lateral displacement array can further be between and in fluid communication with a local inlet and a local outlet. Also, the nanoscale deterministic lateral displacement array can laterally displace a particle comprised within a sample fluid supplied from the global inlet to a collection region that directs the particle to the local outlet. An advantage of such an apparatus can be the expanded versatility of the nanoscale deterministic lateral displacement array for sample preparation applications involving nanoparticles not accessible to other higher throughput microscale microfluidic technologies.
    Type: Application
    Filed: October 17, 2023
    Publication date: February 8, 2024
    Inventors: Joshua T. Smith, Benjamin Wunsch, Stacey Gifford
  • Patent number: 11833511
    Abstract: Techniques regarding nanofluidic chips with a plurality of inlets and/or outlets in fluid communication with one or more nanoDLD arrays are provided. For example, one or more embodiments described herein can comprise a nanoscale deterministic lateral displacement array between and in fluid communication with a global inlet and a global outlet. The nanoscale deterministic lateral displacement array can further be between and in fluid communication with a local inlet and a local outlet. Also, the nanoscale deterministic lateral displacement array can laterally displace a particle comprised within a sample fluid supplied from the global inlet to a collection region that directs the particle to the local outlet. An advantage of such an apparatus can be the expanded versatility of the nanoscale deterministic lateral displacement array for sample preparation applications involving nanoparticles not accessible to other higher throughput microscale microfluidic technologies.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: December 5, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joshua T. Smith, Benjamin Wunsch, Stacey Gifford
  • Publication number: 20230191398
    Abstract: A method for fabricating a fluidic device includes depositing a sacrificial material on a pillar array arranged on a substrate. The method also includes removing a portion of the sacrificial material. The method further includes depositing a sealing layer on the pillar array to form a sealed fluidic cavity.
    Type: Application
    Filed: February 7, 2023
    Publication date: June 22, 2023
    Inventors: Evan Colgan, Joshua T. Smith, Benjamin Wunsch
  • Patent number: 11651925
    Abstract: A technique relates to a semiconductor device. An emitter electrode and a collector electrode are formed in a dielectric layer such that a nanogap separates the emitter electrode and the collector electrode, a portion of the emitter electrode including layers. A channel is formed in the dielectric layer so as to traverse the nanogap. A top layer is formed over the channel so as to cover the channel and the nanogap without filling in the channel and the nanogap, thereby forming a vacuum channel transistor structure.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: May 16, 2023
    Assignee: International Business Machines Corporation
    Inventors: Joshua T. Smith, Benjamin Wunsch
  • Publication number: 20230107476
    Abstract: Techniques regarding one or more structures that can facilitate automated, multi-stage processing of one or more nanofluidic chips are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a roller positioned adjacent to a microfluidic card comprising a plurality of fluid reservoirs in fluid communication with a plurality of nanofluidic chips. An arrangement of the plurality of nanofluidic chips on the microfluidic card can defines a processing sequence driven by a translocation of the roller across the microfluidic card.
    Type: Application
    Filed: December 6, 2022
    Publication date: April 6, 2023
    Inventors: Benjamin Wunsch, Joshua T. Smith, Stacey Gifford, Sung-Cheol Kim
  • Patent number: 11612889
    Abstract: A method for fabricating a fluidic device includes depositing a sacrificial material on a pillar array arranged on a substrate. The method also includes removing a portion of the sacrificial material. The method further includes depositing a sealing layer on the pillar array to form a sealed fluidic cavity.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: March 28, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Evan Colgan, Joshua T. Smith, Benjamin Wunsch
  • Patent number: 11548000
    Abstract: Techniques regarding one or more structures that can facilitate automated, multi-stage processing of one or more nanofluidic chips are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a roller positioned adjacent to a microfluidic card comprising a plurality of fluid reservoirs in fluid communication with a plurality of nanofluidic chips. An arrangement of the plurality of nanofluidic chips on the microfluidic card can defines a processing sequence driven by a translocation of the roller across the microfluidic card.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: January 10, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Benjamin Wunsch, Joshua T. Smith, Stacey Gifford, Sung-Cheol Kim
  • Publication number: 20220347681
    Abstract: Techniques regarding microfluidic chips with one or more vias filled with sacrificial plugs and/or manufacturing methods thereof are provided herein. For example, one or more embodiments described herein can comprise an apparatus, which can comprise a silicon device layer of a microfluidic chip comprising a plurality of vias extending through the silicon device layer. The plurality of vias comprise greater than or equal to about 100 vias per square centimeter of a surface of the silicon device layer and less than or equal to about 100,000 vias per square centimeter of the surface of the silicon device layer. Additionally, the apparatus can comprise a plurality of sacrificial plugs positioned in the plurality of vias.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 3, 2022
    Inventors: Joshua T. Smith, Robert Bruce, Jyotica V. Patel, Benjamin Wunsch
  • Patent number: 11440002
    Abstract: Techniques regarding microfluidic chips with one or more vias filled with sacrificial plugs and/or manufacturing methods thereof are provided herein. For example, one or more embodiments described herein can comprise an apparatus, which can comprise a silicon device layer of a microfluidic chip comprising a plurality of vias extending through the silicon device layer. The plurality of vias comprise greater than or equal to about 100 vias per square centimeter of a surface of the silicon device layer and less than or equal to about 100,000 vias per square centimeter of the surface of the silicon device layer. Additionally, the apparatus can comprise a plurality of sacrificial plugs positioned in the plurality of vias.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 13, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Joshua T. Smith, Robert Bruce, Jyotica V. Patel, Benjamin Wunsch
  • Patent number: 11320387
    Abstract: Techniques regarding one or more structures for checking the via formation are provided. For example, one or more embodiments described herein can comprise an apparatus, which can comprise a microfluidic channel positioned on a silicon substrate. The apparatus can also comprise a pattern of material comprised within the microfluidic channel and positioned on a surface of the silicon substrate. Further, the pattern of material can define a future location of a through-silicon via. An advantage of such an apparatus can be that the pattern of material can facilitate checking whether the through-silicon via is fully or partially formed.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: May 3, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Benjamin Wunsch, Sung-Cheol Kim, Stacey Gifford, Joshua T. Smith
  • Publication number: 20220055893
    Abstract: An exemplary method includes forming a sacrificial layer along sidewalls of an array of trenches that are indented into a substrate, depositing a fill layer over the sacrificial layer, and then creating an array of gaps between the fill layer and the substrate by removing the sacrificial layer along the sidewalls of the trenches, while maintaining a structural connection between the substrate and the fill layer at the floors of the trenches. The method further includes covering the substrate, the fill layer, and the gaps with a cap layer that seal fluid-tight against the substrate and the fill layer. The method further includes indenting a first reservoir and a second reservoir through the cap layer, and into the substrate and the fill layer, across the lengths of the array of gaps, so that the array of gaps connects the first reservoir in fluid communication with the second reservoir.
    Type: Application
    Filed: November 7, 2021
    Publication date: February 24, 2022
    Inventors: Joshua T. Smith, Stacey Gifford, Sung-Cheol Kim, Benjamin Wunsch
  • Publication number: 20220033878
    Abstract: Techniques regarding screening for mutations using nanoscale deterministic arrays are provided. For example, one or more embodiments described herein can comprise a method, which can comprise cleaving a deoxyribonucleic acid segment hybridized with a molecular probe to form a sample fluid. The cleaving can occur at a first end and a second end of the molecular probe. Also, the cleaving can comprise a cleaving agent that targets base pair mismatches. The method can also comprise supplying the sample fluid to a nanoscale deterministic lateral displacement array to screen for a single nucleotide polymorphism.
    Type: Application
    Filed: October 14, 2021
    Publication date: February 3, 2022
    Inventors: Stacey Gifford, Benjamin Wunsch, Joshua T. Smith, Sung-Cheol Kim