Patents by Inventor Ajay K. Royyuru

Ajay K. Royyuru 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: 20150315638
    Abstract: A mechanism is provided for presenting single strands of a double strand molecule to a membrane. The double strand molecule is driven to a first side of the membrane by an electric field. The membrane has a first and second nanopore spaced apart by a nanopore separation distance. The first strand of the double strand molecule is captured in the first nanopore when driven to the first side of the membrane. The second strand is captured in the second nanopore by having the nanopore separation distance between the first nanopore and the second nanopore corresponding to a strand separation distance between the first and second strands, and/or by having captured the first strand to limit diffusion of the second strand. The first and second strands respectively in the first and second nanopores are individually stretched, by the first and second strands recombining on the second side of the membrane.
    Type: Application
    Filed: June 22, 2015
    Publication date: November 5, 2015
    Inventor: Ajay K. Royyuru
  • Publication number: 20150316504
    Abstract: A mechanism is provided for presenting single strands of a double strand molecule to a membrane. The double strand molecule is driven to a first side of the membrane by an electric field. The membrane has a first and second nanopore spaced apart by a nanopore separation distance. The first strand of the double strand molecule is captured in the first nanopore when driven to the first side of the membrane. The second strand is captured in the second nanopore by having the nanopore separation distance between the first nanopore and the second nanopore corresponding to a strand separation distance between the first and second strands, and/or by having captured the first strand to limit diffusion of the second strand. The first and second strands respectively in the first and second nanopores are individually stretched, by the first and second strands recombining on the second side of the membrane.
    Type: Application
    Filed: January 29, 2015
    Publication date: November 5, 2015
    Inventor: Ajay K. Royyuru
  • Publication number: 20150160159
    Abstract: A nanodevice includes a reservoir filled with conductive fluid and a membrane separating the reservoir. A nanopore is formed through the membrane having electrode layers separated by insulating layers. A certain electrode layer has a first type of organic coating and a pair of electrode layers has a second type. The first type of organic coating forms a motion control transient bond to a molecule in the nanopore for motion control, and the second type forms first and second transient bonds to different bonding sites of a base of the molecule. When a voltage is applied to the pair of electrode layers a tunneling current is generated by the base in the nanopore, and the tunneling current travels via the first and second transient bonds formed to be measured as a current signature for distinguishing the base. The motion control transient bond is stronger than first and second transient bonds.
    Type: Application
    Filed: February 18, 2015
    Publication date: June 11, 2015
    Inventors: Ali Afzali-Ardakani, Stefan Harrer, Binquan Luan, Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitzky, Philip S. Waggoner
  • Patent number: 9046511
    Abstract: A mechanism is provided for forming a nanodevice. A reservoir is filled with a conductive fluid, and a membrane is formed to separate the reservoir in the nanodevice. The membrane includes an electrode layer having a tunneling junction formed therein. The membrane is formed to have a nanopore formed through one or more other layers of the membrane such that the nanopore is aligned with the tunneling junction of the electrode layer. The tunneling junction of the electrode layer is narrowed to a narrowed size by electroplating or electroless deposition. When a voltage is applied to the electrode layer, a tunneling current is generated by a base in the tunneling junction to be measured as a current signature for distinguishing the base. When an organic coating is formed on an inside surface of the tunneling junction, transient bonds are formed between the electrode layer and the base.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: June 2, 2015
    Assignee: International Business Machines Corporation
    Inventors: Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Patent number: 9009675
    Abstract: A method of implementing verification of a complex workflow includes partitioning the workflow into modules, wherein the modules have inputs, processing steps and outputs; selecting, from the workflow, one of the partitioned modules for independent verification by challenge thereof; running, with a computing device, a challenge of the selected module, the challenge comprising comparing reference outputs to outputs of the selected module, wherein reference inputs are received by the selected module and the reference outputs are generated using the reference inputs and one of an ideal performing module or a well-established module; determining whether outputs of the selected module meet verification criteria with respect to the reference outputs, and based on the determining, implementing one of: declaring the selected module verified; subdividing the selected module into smaller modules and repeating the challenge on the smaller modules; or declaring the selected module not verified.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: April 14, 2015
    Assignees: International Business Machines Corporation, Philip Morris Products S.A.
    Inventors: Stephanie M. Corthesy, Pablo Meyer Rojas, Raquel Norel, John J. Rice, Ajay K. Royyuru, Joerg J. Sprengel, Gustavo A. Stolovitzky, Thomas Bonk, Julia Hoeng, Manuel Peitsch, Katrin Stolle
  • Patent number: 8999130
    Abstract: A mechanism is provided for manipulating a molecule. The molecule is driven into a nanochannel filed with electrically conductive fluid. A first vertical electric field is created inside the nanochannel to slow down the molecule and/or immobilize the molecule. The molecule is stretched into non-folded linear chains by the first vertical electric field and a horizontal electric field. Monomers of the molecule are sequentially read.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: April 7, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ajay K. Royyuru, Chao Wang
  • Patent number: 8986524
    Abstract: A nanodevice includes a reservoir filled with conductive fluid and a membrane separating the reservoir. A nanopore is formed through the membrane having electrode layers separated by insulating layers. A certain electrode layer has a first type of organic coating and a pair of electrode layers has a second type. The first type of organic coating forms a motion control transient bond to a molecule in the nanopore for motion control, and the second type forms first and second transient bonds to different bonding sites of a base of the molecule. When a voltage is applied to the pair of electrode layers a tunneling current is generated by the base in the nanopore, and the tunneling current travels via the first and second transient bonds formed to be measured as a current signature for distinguishing the base. The motion control transient bond is stronger than first and second transient bonds.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: March 24, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Stefan Harrer, Binquan Luan, Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitzky, Philip S. Waggoner
  • Patent number: 8975095
    Abstract: A technique is provided for base recognition in an integrated device is provided. A target molecule is driven into a nanopore of the integrated device. The integrated device includes a nanowire separated into a left nanowire part and a right nanowire part to form a nanogap in between, a source pad connected to the right nanowire part, a drain pad connected to the left nanowire part, and the nanopore. The source pad, the drain pad, the right nanowire part, the left nanowire part, and the nanogap together form a transistor. The nanogap is part of the nanopore. A transistor current is measured while a single base of the target molecule is in the nanogap of the nanopore, and the single base affects the transistor current. An identity of the single base is determined according to a change in the transistor current.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 10, 2015
    Assignee: International Business Machines Corporation
    Inventors: Shu-Jen Han, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Publication number: 20150037787
    Abstract: A mixed polynucleotide includes a first double stranded (ds) portion, a second portion including at least one single stranded (ss) portion, and a third ds portion. The second portion connects the first ds portion and the third ds portion to provide a modified polynucleotide.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Binquan Luan, Ajay K. Royyuru, Gustavo A. Stolovitzky, Chao Wang, Deqiang Wang
  • Publication number: 20150037843
    Abstract: A mixed polynucleotide includes a first double stranded (ds) portion, a second portion including at least one single stranded (ss) portion, and a third ds portion. The second portion connects the first ds portion and the third ds portion to provide a modified polynucleotide.
    Type: Application
    Filed: August 28, 2013
    Publication date: February 5, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Binquan Luan, Ajay K. Royyuru, Gustavo A. Stolovitzky, Chao Wang, Deqiang Wang
  • Publication number: 20150038691
    Abstract: A mixed polynucleotide includes a first double stranded (ds) portion, a second portion including at least one single stranded (ss) portion, and a third ds portion. The second portion connects the first ds portion and the third ds portion to provide a modified polynucleotide.
    Type: Application
    Filed: August 28, 2013
    Publication date: February 5, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Binquan Luan, Ajay K. Royyuru, Gustavo A. Stolovitzky, Chao Wang, Deqiang Wang
  • Patent number: 8906215
    Abstract: A mechanism is provided for manipulating a molecule. The molecule is driven into a nanochannel filed with electrically conductive fluid. A first vertical electric field is created inside the nanochannel to slow down the molecule and/or immobilize the molecule. The molecule is stretched into non-folded linear chains by the first vertical electric field and a horizontal electric field. Monomers of the molecule are sequentially read.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 9, 2014
    Assignee: International Business Machines Corporation
    Inventors: Ajay K. Royyuru, Chao Wang
  • Patent number: 8890121
    Abstract: A technique is provided for base recognition in an integrated device is provided. A target molecule is driven into a nanopore of the integrated device. The integrated device includes a nanowire separated into a left nanowire part and a right nanowire part to form a nanogap in between, a source pad connected to the right nanowire part, a drain pad connected to the left nanowire part, and the nanopore. The source pad, the drain pad, the right nanowire part, the left nanowire part, and the nanogap together form a transistor. The nanogap is part of the nanopore. A transistor current is measured while a single base of the target molecule is in the nanogap of the nanopore, and the single base affects the transistor current. An identity of the single base is determined according to a change in the transistor current.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: November 18, 2014
    Assignee: International Business Machines Corporation
    Inventors: Shu-Jen Han, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Publication number: 20140326954
    Abstract: A technique is provided for base recognition in an integrated device is provided. A target molecule is driven into a nanopore of the integrated device. The integrated device includes a nanowire separated into a left nanowire part and a right nanowire part to form a nanogap in between, a source pad connected to the right nanowire part, a drain pad connected to the left nanowire part, and the nanopore. The source pad, the drain pad, the right nanowire part, the left nanowire part, and the nanogap together form a transistor. The nanogap is part of the nanopore. A transistor current is measured while a single base of the target molecule is in the nanogap of the nanopore, and the single base affects the transistor current. An identity of the single base is determined according to a change in the transistor current.
    Type: Application
    Filed: May 6, 2013
    Publication date: November 6, 2014
    Applicant: International Business Machines Corporation
    Inventors: Shu-Jen Han, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Publication number: 20140326604
    Abstract: A technique is provided for base recognition in an integrated device is provided. A target molecule is driven into a nanopore of the integrated device. The integrated device includes a nanowire separated into a left nanowire part and a right nanowire part to form a nanogap in between, a source pad connected to the right nanowire part, a drain pad connected to the left nanowire part, and the nanopore. The source pad, the drain pad, the right nanowire part, the left nanowire part, and the nanogap together form a transistor. The nanogap is part of the nanopore. A transistor current is measured while a single base of the target molecule is in the nanogap of the nanopore, and the single base affects the transistor current. An identity of the single base is determined according to a change in the transistor current.
    Type: Application
    Filed: May 29, 2013
    Publication date: November 6, 2014
    Inventors: Shu-Jen Han, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Publication number: 20140312002
    Abstract: A mechanism is provided for forming a nanodevice. A reservoir is filled with a conductive fluid, and a membrane is formed to separate the reservoir in the nanodevice. The membrane includes an electrode layer having a tunneling junction formed therein. The membrane is formed to have a nanopore formed through one or more other layers of the membrane such that the nanopore is aligned with the tunneling junction of the electrode layer. The tunneling junction of the electrode layer is narrowed to a narrowed size by electroplating or electroless deposition. When a voltage is applied to the electrode layer, a tunneling current is generated by a base in the tunneling junction to be measured as a current signature for distinguishing the base. When an organic coating is formed on an inside surface of the tunneling junction, transient bonds are formed between the electrode layer and the base.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 23, 2014
    Inventors: Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Publication number: 20140312003
    Abstract: A mechanism is provided for forming a nanodevice. A reservoir is filled with a conductive fluid, and a membrane is formed to separate the reservoir in the nanodevice. The membrane includes an electrode layer having a tunneling junction formed therein. The membrane is formed to have a nanopore formed through one or more other layers of the membrane such that the nanopore is aligned with the tunneling junction of the electrode layer. The tunneling junction of the electrode layer is narrowed to a narrowed size by electroplating or electroless deposition. When a voltage is applied to the electrode layer, a tunneling current is generated by a base in the tunneling junction to be measured as a current signature for distinguishing the base. When an organic coating is formed on an inside surface of the tunneling junction, transient bonds are formed between the electrode layer and the base.
    Type: Application
    Filed: August 20, 2013
    Publication date: October 23, 2014
    Applicant: International Business Machines Corporation
    Inventors: Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Patent number: 8858764
    Abstract: A technique for a nanodevice is provided that includes a reservoir filled with a conductive fluid and a membrane separating the reservoir. The membrane includes an electrode layer having a tunneling junction formed therein. A nanopore is formed through the membrane, and the nanopore is formed through other layers of the membrane such that the nanopore is aligned with the tunneling junction of the electrode layer. When a voltage is applied to the electrode layer, a tunneling current is generated by a base in the tunneling junction to be measured as a signature for distinguishing the base. When an organic coating is formed on an inside surface of the tunneling junction, transient bonds are formed between the electrode layer and the base.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 14, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitzky, Deqiang Wang
  • Patent number: 8852407
    Abstract: A nanodevice is provided that includes a reservoir filled with a conductive fluid and a membrane separating the reservoir. The membrane includes an electrode layer having a tunneling junction formed therein. A nanopore is formed through the membrane, and the nanopore is formed through other layers of the membrane such that the nanopore is aligned with the tunneling junction of the electrode layer. When a voltage is applied to the electrode layer, a tunneling current is generated by a base in the tunneling junction to be measured as a signature for distinguishing the base. When an organic coating is formed on an inside surface of the tunneling junction, transient bonds are formed between the electrode layer and the base.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: October 7, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hongbo Peng, Stephen M. Rossnagel, Ajay K. Royyuru, Gustavo A. Stolovitky, Deqiang Wang
  • Publication number: 20140151228
    Abstract: A mechanism is provided for manipulating a molecule. The molecule is driven into a nanochannel filed with electrically conductive fluid. A first vertical electric field is created inside the nanochannel to slow down the molecule and/or immobilize the molecule. The molecule is stretched into non-folded linear chains by the first vertical electric field and a horizontal electric field. Monomers of the molecule are sequentially read.
    Type: Application
    Filed: August 19, 2013
    Publication date: June 5, 2014
    Applicant: International Business Machines Corporation
    Inventors: Ajay K. Royyuru, Chao Wang