Patents by Inventor Ali Afzali Ardakani

Ali Afzali Ardakani 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: 20200335829
    Abstract: An interfacial additive layer for decreasing the interfacial resistance/impedance of a silicon based electrode-containing device such as, for example, an energy storage device or a micro-resistor, is disclosed. The interfacial additive layer, which is composed of a molten lithium containing salt, is formed between a silicon based electrode and a solid polymer electrolyte layer of the device. The presence of such an interfacial additive layer increases the ion and electron mobile dependent performances at the silicon based electrode interface due to significant decrease in the resistance/impedance that is observed at the respective interface as well as the impedance observed in the bulk of the device.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Inventors: John Collins, Ali Afzali-Ardakani, Teodor K. Todorov, Joel P. de Souza, Devendra K. Sadana
  • Publication number: 20200335819
    Abstract: A device such as, for example, an energy storage device or a micro-resistor, is disclosed which includes a silicon based electrode in which decreased interfacial resistance/impedance throughout the charge-mobile region of the device is provided. The decreased interfacial resistance/impedance is provided by forming an interfacial additive composite layer composed of a molten lithium containing salt layer and a layer of a Li-salt containing conductive polymeric adhesive material between the silicon based electrode and a solid polymer electrolyte layer. The presence of such an interfacial additive composite layer increases the ion and electron mobile dependent performances at the silicon based electrode interface due to significant decrease in the resistance/impedance that is observed at the respective interface as well as the impedance observed in the bulk of the device.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Inventors: John Collins, Ali Afzali-Ardakani, Teodor K. Todorov, Joel P. de Souza, Devendra K. Sadana
  • Publication number: 20200335826
    Abstract: Making a rechargeable Lithium energy storage device begins by forming one or more trenches in a solid silicon substrate. One or more region interface precursors are deposited in the trench followed by one or more anode materials, one or more solid polymer electrolytes (SPE), and one or more cathode materials. Electrically cycling transforms the battery structures prior to full operation of the battery. Some, or all, of the process steps can be performed while the materials are within the trench, i.e. in-situ.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 22, 2020
    Inventors: John Collins, Ali Afzali-Ardakani, Devendra K. Sadana, Teodor Krassimirov Todorov
  • Patent number: 10790336
    Abstract: Hybrid high electron mobility field-effect transistors including inorganic channels and organic gate barrier layers are used in some applications for forming high resolution active matrix displays. Arrays of such high electron mobility field-effect transistors are electrically connected to thin film switching transistors and provide high drive currents for passive devices such as organic light emitting diodes. The organic gate barrier layers are operative to suppress both electron and hole transport between the inorganic channel layer and the gate electrodes of the high electron mobility field-effect transistors.
    Type: Grant
    Filed: April 6, 2019
    Date of Patent: September 29, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Bahman Hekmatshoartabari, Devendra K. Sadana, Davood Shahrjerdi
  • Patent number: 10783334
    Abstract: Systems, methods, and electronic circuits facilitating embedded sensor chips in polymer-based coatings are provided. In one example, a method comprises fabricating an electronic circuit, the electronic circuit comprising one or more semiconductor devices, one or more sensors, and a communication element; encapsulating the electronic circuit within an insulator, resulting in an encapsulated circuit; and dispersing the encapsulated circuit into a lacquer solution comprising a polymer carrier and a solvent.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: September 22, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Homa Alemzadeh, Maryam Ashoori, Bahman Hekmatshoartabari, Elham Khabiri
  • Patent number: 10768109
    Abstract: A method of forming a chemical sensor includes forming a dielectric layer on an electrode. A carbon nanotube film is deposited on the dielectric layer. The carbon nanotube film is patterned into strips.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: September 8, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Abram L. Falk, Damon B. Farmer, Shu-Jen Han, George S. Tulevski
  • Patent number: 10761089
    Abstract: Techniques for selective placement of carbon nanotubes using bifunctional acid monolayers are provided. In one aspect, a method for selective placement of carbon nanotubes on a metal oxide surface includes the steps of: dispersing poly-fluorene polymer-wrapped carbon nanotubes in an organic solvent; creating a patterned monolayer of a bifunctional acid on the metal oxide surface, wherein the bifunctional acid comprises a first acid functional group for binding to the metal oxide surface, and a second acid functional group for binding to the poly-fluorene polymer-wrapped carbon nanotubes; and contacting the poly-fluorene polymer-wrapped carbon nanotubes dispersed in the organic solvent with the patterned monolayer of the bifunctional acid on the metal oxide surface to selectively place the carbon nanotubes on the metal oxide surface via the patterned monolayer of the bifunctional acid. A carbon nanotube-based device and method of formation thereof are also provided.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: September 1, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, James B. Hannon, George S. Tulevski
  • Publication number: 20200212492
    Abstract: A Lithium energy storage device comprising a cathode, electrolyte, anode, and substrate. The materials contained in the anode and electrolyte region are electrochemically altered during initial formation and exposed to current cycles to create a lower impedance composite anode. The resulting composite anode bottom is a bi-layer comprising: i. a lithium metal layer and ii. a silicon-based interphase layer. The bi-layer acts as a barrier to inhibit Lithium ions from entering or leaving a Lithium saturated substrate, once the interphase surface is formed and the substrate is saturated with Lithium ions. This prevents cell failure from large volume changes/stresses during charge/discharge cycles and enables a significant decrease in cell impedance to enable better rechargeable cell performance.
    Type: Application
    Filed: March 27, 2019
    Publication date: July 2, 2020
    Inventors: John Collins, Ali Afzali-Ardakani, John M. Papalia, Devendra K. Sadana
  • Patent number: 10692821
    Abstract: Silicon-based or other electronic circuitry is dissolved or otherwise disabled by reactive materials within a semiconductor chip should the chip or a device containing the chip be subjected to tampering. Triggering circuits containing normally-OFF heterojunction field-effect photo-transistors are configured to cause reactions of the reactive materials within the chips upon exposure to light. The normally-OFF heterojunction field-effect photo-transistors can be fabricated during back-end-of-line processing through the use of polysilicon channel material, amorphous hydrogenated silicon gate contacts, hydrogenated crystalline silicon source/drain contacts, or other materials that allow processing at low temperatures.
    Type: Grant
    Filed: September 22, 2018
    Date of Patent: June 23, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Joel P. de Souza, Bahman Hekmatshoartabari, Daniel M. Kuchta, Devendra K. Sadana
  • Patent number: 10658030
    Abstract: A method of forming an Integrated Circuit (IC) chip, the IC chip and an on-chip synaptic crossbar memory array. Chip devices are formed on a surface of a semiconductor wafer. A connective layer is formed above the chip devices. A bottom electrode layer is formed on the connective layer. A neuromorphic synapse layer is formed above the bottom electrode layer with each synapse on a bottom electrode. Upper electrodes are formed above the synapses and orthogonal to bottom electrode lines. Each synapse being beneath an upper electrode where the upper electrode crosses a bottom electrode. Upper electrodes are refractory metal and the bottom electrodes are copper, or vice versa.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: May 19, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Talia S. Gershon, Pouya Hashemi, Bahman Hekmatshoartabari
  • Publication number: 20200141899
    Abstract: A method for making a hydrophobic biosensing device includes forming alternating layers over a top and sides of a fin on a dielectric layer to form a stack of layers. The stack of layers are planarized to expose the top of the fin. The fin and every other layer are removed to form a cathode group of fins and an anode group of fins. A hydrophobic surface on the two groups of fins.
    Type: Application
    Filed: January 3, 2020
    Publication date: May 7, 2020
    Inventors: Ali Afzali-Ardakani, Karthik Balakrishnan, Stephen W. Bedell, Pouya Hashemi, Bahman Hekmatshoartabari, Alexander Reznicek
  • Patent number: 10585063
    Abstract: A method for making a hydrophobic biosensing device includes forming alternating layers over a top and sides of a fin on a dielectric layer to form a stack of layers. The stack of layers are planarized to expose the top of the fin. The fin and every other layer are removed to form a cathode group of fins and an anode group of fins. A hydrophobic surface on the two groups of fins.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: March 10, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Karthik Balakrishnan, Stephen W. Bedell, Pouya Hashemi, Bahman Hekmatshoartabari, Alexander Reznicek
  • Patent number: 10578577
    Abstract: Embodiments of the invention are directed to a solid-state zinc sensor. A non-limiting example of the sensor includes a semiconductor substrate. The sensor can also include an assembly surface on the semiconductor substrate. The sensor can also include a zinc detection monolayer chemically bound to the assembly surface. The sensor can also include a power supply electrically connected to the semiconductor substrate.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: March 3, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Abram L. Falk, Bharat Kumar
  • Publication number: 20200064342
    Abstract: A process for monitoring binding events, a coating compound, and a device for monitoring binding events are disclosed. The process includes providing two reservoirs that contain an electrically conductive fluid, wherein the reservoirs are separated by a membrane having a nanopore. The process also includes selecting a target compound, selecting a ligand based on the selection of the target compound, and preparing a coating that includes the coating compound, wherein the coating compound includes the ligand and a moiety that immobilizes the ligand. Additionally, the process includes applying the coating to the inner surface of the nanopore, adding the target compound to a conductive liquid in the first chamber, establishing a voltage gradient across the membrane, and electrically monitoring translocation of the target molecule. The device includes the reservoirs and the membrane having the coated nanopore.
    Type: Application
    Filed: August 24, 2018
    Publication date: February 27, 2020
    Inventors: Priscilla Racquel Rogers, Stefan Harrer, Ali Afzali-Ardakani, Jose Miguel Lobez Comeras, Sung Cheol Kim, Natalie J. Gunn
  • Patent number: 10546303
    Abstract: A unique ID using optically visible carbon nanotubes with nanocrystal decoration is provided. In one aspect, a method for creating a unique ID includes: providing a substrate having an array of trenches; randomly placing carbon nanotubes throughout the array such that each trench either contains a carbon nanotube or does not, wherein the random placement of the carbon nanotubes throughout the array of trenches includes code information that forms the unique ID; and coating the carbon nanotubes with optically visible nanocrystals. A unique ID and authentication method using the unique ID are also provided.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 28, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Shu-Jen Han
  • Publication number: 20190361011
    Abstract: The compositions described herein include a substrate, wherein the substrate is a metal, metal oxide, metal nitride or a silicon containing material; a self-assembled monolayer (SAM) bonded to the substrate, wherein the self-assembled monolayer comprises: a surface binding unit bonded to the substrate, wherein the surface binding unit is selected from the group consisting of hydroxamates, phosphonates, catechols, halosilanes, alkoxysilanes, phosphonic acids, alkenes, alkynes, alcohols, 1,2-diols, and thiols; a separator unit bonded to the surface binding unit; a mass altering unit bonded to the separator unit; and a detector unit bonded to the separator unit.
    Type: Application
    Filed: May 23, 2018
    Publication date: November 28, 2019
    Inventors: Bharat KUMAR, Sufi ZAFAR, Ali AFZALI-ARDAKANI
  • Patent number: 10485430
    Abstract: An apparatus includes a wearable sensor structure that includes multiple individual sensor units placed in a row. Each individual sensor unit includes a first portion to contact a surface of skin under which arteries and/or veins are to be located, and a second portion that contacts the first portion and is configured to have a capacitance. The first and second portions are configured to create a capacitance change in response to a squeezing or bending between the first portion and a fixed part of the second portion caused by a pulse pressure and release of the pulse pressure. The apparatus includes circuitry configured to measure waveforms for the individual sensor units. Each waveform captures the capacitance change for its corresponding individual sensor unit. The apparatus includes a wireless interface configured to transmit the waveforms. A computing system is also disclosed that analyzes the waveforms and can provide alerts based thereon.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: November 26, 2019
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Kang-Wook Lee, Robert S. Olyha, Jr.
  • Patent number: 10476016
    Abstract: Device architectures based on trapping and de-trapping holes or electrons and/or recombination of both types of carriers are obtained by carrier trapping either in near-interface deep ambipolar states or in quantum wells/dots, either serving as ambipolar traps in semiconductor layers or in gate dielectric/barrier layers. In either case, the potential barrier for trapping is small and retention is provided by carrier confinement in the deep trap states and/or quantum wells/dots. The device architectures are usable as three terminal or two terminal devices.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 12, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Tze-Chiang Chen, Kailash Gopalakrishnan, Bahman Hekmatshoartabari
  • Publication number: 20190286859
    Abstract: Systems, methods, and electronic circuits facilitating embedded sensor chips in polymer-based coatings are provided. In one example, a method comprises fabricating an electronic circuit, the electronic circuit comprising one or more semiconductor devices, one or more sensors, and a communication element; encapsulating the electronic circuit within an insulator, resulting in an encapsulated circuit; and dispersing the encapsulated circuit into a lacquer solution comprising a polymer carrier and a solvent.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 19, 2019
    Inventors: Ali Afzali-Ardakani, Homa Alemzadeh, Maryam Ashoori, Bahman Hekmatshoartabari, Elham Khabiri
  • Publication number: 20190288210
    Abstract: A method of fabricating a carbon nanotube based device, including forming a trench having a bottom surface and sidewalls on a substrate, selectively depositing a bi-functional compound having two reactive moieties in the trench, wherein a first of the two reactive moieties selectively binds to the bottom surface, converting a second of the two reactive moieties to a diazonium salt; and reacting the diazonium salt with a dispersion of carbon nanotubes to form a carbon nanotube layer bound to the bottom surface of the trench.
    Type: Application
    Filed: May 29, 2019
    Publication date: September 19, 2019
    Inventors: Ali Afzali-Ardakani, Bharat Kumar, George S. Tulevski