Patents by Inventor Douglas R. Strachan

Douglas R. Strachan 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).

  • Ordered nanotubes on a two-dimensional substrate consisting of different material properties
    Patent number: 11136666
    Abstract: A nanoscale conductor/semiconductor/insulator device includes a substrate with a lattice and a plurality of nanotubes in crystallographic alignment with the lattice at an interface between the plurality of nanotubes and the substrate. Another such device includes a substrate, meandering tracks in the substrate and a plurality of nanotubes adhering to cut-atomic-step edges of the meandering tracks. Methods of making the nanoscale conductor/semiconductor/insulator devices are also disclosed.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: October 5, 2021
    Assignee: University of Kentucky Research Foundation
    Inventors: Mohsen Nasseri, Armin Ansary, Mathias J. Boland, Douglas R. Strachan
  • CROSS-GAP-NANOPORE HETEROSTRUCTURE DEVICE AND METHOD FOR IDENTIFYING CHEMICAL SUBSTANCE
    Publication number: 20200393407
    Abstract: A heterostructure device and method allow for detection and identification of a chemical substance. The device includes one or more atomically-thin conducting layers and one or more atomically-thin insulating layers including one or more nanogaps that cross and form one or more nanopores.
    Type: Application
    Filed: June 15, 2020
    Publication date: December 17, 2020
    Inventor: Douglas R. Strachan
  • ORDERED NANOTUBES ON A TWO-DIMENSIONAL SUBSTRATE CONSISTING OF DIFFERENT MATERIAL PROPERTIES
    Publication number: 20200071817
    Abstract: A nanoscale conductor/semiconductor/insulator device includes a substrate with a lattice and a plurality of nanotubes in crystallographic alignment with the lattice at an interface between the plurality of nanotubes and the substrate. Another such device includes a substrate, meandering tracks in the substrate and a plurality of nanotubes adhering to cut-atomic-step edges of the meandering tracks. Methods of making the nanoscale conductor/semiconductor/insulator devices are also disclosed.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Inventors: Mohsen Nasseri, Armin Ansary, Mathias J. Boland, Douglas R. Strachan
  • Parallel fabrication of nanogaps and devices thereof
    Patent number: 8918152
    Abstract: Disclosed are devices comprising multiple nanogaps having a separation of less than about 5 nm. Also disclosed are methods for fabricating these devices.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: December 23, 2014
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Douglas R. Strachan, Danvers E. Johnston, Beth S. Guiton, Peter K. Davies, Dawn A. Bonnell, Alan T. Johnson, Jr.
  • Electronic device incorporating memristor made from metallic nanowire
    Patent number: 8716688
    Abstract: An electronic device includes a first electrode, a second electrode and a nanowire connected between the first and second electrodes to allow electric current flow. The nanowire is made from a conductive material exhibiting a variable resistance due to electromigration. The nanowire is repeatably switchable between two states. A voltage clamp operates through feedback control to maintain the voltage across the nanowire and prevent thermal runaway.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: May 6, 2014
    Assignee: The University of Kentucky Research Foundation
    Inventors: Douglas R. Strachan, Stephen L. Johnson
  • ATOMICALLY PRECISE NANORIBBONS AND RELATED METHODS
    Publication number: 20120034707
    Abstract: Disclosed are atomically precise nanoribbons formed by gradient-driven catalytic etching of crystalline substrates to produce edges formed along specific crystallographic axes by thermally-activated particles. Also provided are related methods for fabrication of these nanoribbon structures. Further provided are devices and related methods for power generation and for detection of specific targets using the disclosed structures.
    Type: Application
    Filed: June 1, 2009
    Publication date: February 9, 2012
    Inventors: Sujit S. Datta, Douglas R. Strachan, Samuel M. Khamis, Alan T. Johnson, JR., Yaping Dan
  • ELECTRONIC DEVICE INCORPORATING MEMRISTOR MADE FROM METALLIC NANOWIRE
    Publication number: 20110204310
    Abstract: An electronic device includes a first electrode, a second electrode and a nanowire connected between the first and second electrodes to allow electric current flow. The nanowire is made from a conductive material exhibiting a variable resistance due to electromigration. The nanowire is repeatably switchable between two states. A voltage clamp operates through feedback control to maintain the voltage across the nanowire and prevent thermal runaway.
    Type: Application
    Filed: February 25, 2011
    Publication date: August 25, 2011
    Inventors: Douglas R. Strachan, Stephen L. Johnson
  • PARALLEL FABRICATION OF NANOGAPS AND DEVICES THEREOF
    Publication number: 20100144535
    Abstract: Disclosed are devices comprising multiple nanogaps having a separation of less than about 5 nm. Also disclosed are methods for fabricating these devices.
    Type: Application
    Filed: February 13, 2008
    Publication date: June 10, 2010
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: Douglas R. Strachan, Danvers E. Johnston, Beth S. Guiton, Peter K. Davies, Dawn A. Bonnell, Alan T. Johnson, JR.