Patents by Inventor Roy H. Olsson
Roy H. Olsson 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).
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Publication number: 20230084321Abstract: Nonlinear on-chip optical devices using AlScN are described herein. In one aspect, an optical component having nonlinear characteristics can include a first substrate defining a refractive index; and a nonlinear layer, the nonlinear layer disposed on the first substrate, the nonlinear layer comprising an amount of scandium (Sc), and the nonlinear layer defining a refractive index that is higher than the refractive index of the first substrate.Type: ApplicationFiled: July 29, 2022Publication date: March 16, 2023Inventors: Valerie J. Yoshioka, Jian Lu, Zichen Tang, Jicheng Jin, Roy H. Olsson, III, Bo Zhen
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Publication number: 20210399138Abstract: Provided are ferroelectric field effect transistor (FeFET) based memory devices. These devices include aluminum scandium nitride (AlScN) as a ferroelectric dielectric and 2D chalcogenide semiconductors as a semiconductor channel in the transistor. The disclosed materials, devices and fabrication processes involved are compatible with back end of the line (BEOL) processing of a silicon based microchip and also compatible with silicon microprocessor fabrication.Type: ApplicationFiled: June 22, 2021Publication date: December 23, 2021Inventors: Deep Jariwala, Roy H. Olsson, III, Xiwen Liu, Eric Andrew Stach, Kwan-Ho Kim
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Patent number: 10993665Abstract: Embodiments of neural interfaces according to the present invention comprise sensor modules for sensing environmental attributes beyond the natural sensory capability of a subject, and communicating the attributes wirelessly to an external (ex-vivo) portable module attached to the subject. The ex-vivo module encodes and communicates the attributes via a transcutaneous inductively coupled link to an internal (in-vivo) module implanted within the subject. The in-vivo module converts the attribute information into electrical neural stimuli that are delivered to a peripheral nerve bundle within the subject, via an implanted electrode. Methods and apparatus according to the invention incorporate implantable batteries to power the in-vivo module allowing for transcutaneous bidirectional communication of low voltage (e.g. on the order of 5 volts) encoded signals as stimuli commands and neural responses, in a robust, low-error rate, communication channel with minimal effects to the subjects' skin.Type: GrantFiled: January 20, 2017Date of Patent: May 4, 2021Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Stephen P. Buerger, Kenneth E. Wojciechowski, Roy H. Olsson, Deepesh K. Kholwadwala, David K. Novick
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Patent number: 10148244Abstract: A micromechanical resonator is disclosed. The resonator includes a resonant micromechanical element. A film of annealable material deposited on a facial surface of the element. In one instance, the resonance of the element can be adjusting by using a feedback loop to control annealing of the deposited film.Type: GrantFiled: September 14, 2016Date of Patent: December 4, 2018Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Michael David Henry, Janet Nguyen, Matt Eichenfield, Roy H. Olsson
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Patent number: 10141495Abstract: A radio frequency (RF) receiver comprises a passive impedance transforming voltage amplifier and a resonant, latching micromechanical switch having a deflectable bridge, an RF actuation electrode receivingly connected to the amplifier, and a DC bias electrode positioned to latch the switch in a closed position by electrostatic attraction when energized by a suitable voltage. The bridge is configured with a mechanical mode of vibration that periodically urges the switch toward the closed position.Type: GrantFiled: December 15, 2017Date of Patent: November 27, 2018Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Christopher Nordquist, Benjamin Griffin, Christopher Dyck, Matt Eichenfield, Kenneth Wojciechowski, Roy H. Olsson, Aleem Siddiqui, Michael David Henry
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Patent number: 10072879Abstract: Methods and apparatus for removing heat from an object for the purpose of cooling or for the purpose of generating electrical power are disclosed. In an embodiment, at least two field-effect transistors (FETs) are operated under inversion. While the FETs are being operated, heat is conducted from the object through body portions of said FETs to an element configured for dissipating the conducted heat.Type: GrantFiled: April 20, 2015Date of Patent: September 11, 2018Assignees: National Technology & Engineering Solutions of Sandia, LLC, Los Alamos National Security, LLCInventors: Ihab Fathy El-Kady, Charles M Reinke, Roy H. Olsson, Brian S. Swartzentruber, Collin J. Delker, Jinkyoung Yoo
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Patent number: 10009002Abstract: The present invention relates to methods for suppressing spurious modes in microresonators. In particular embodiments, such spurious modes can be reduced by providing one or more structural components that effectively reduce the acoustic velocity in the transducer domain. Additional methods and microresonators are described herein.Type: GrantFiled: August 17, 2016Date of Patent: June 26, 2018Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Darren W. Branch, Roy H. Olsson
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Patent number: 9941857Abstract: A spur cancelling, electromechanical filter includes a first resonator having a first resonant frequency and one or more first spurious responses, and it also includes, electrically connected to the first resonator, a second resonator having a second resonant frequency and one or more second spurious responses. The first and second resonant frequencies are approximately identical, but the first resonator is physically non-identical to the second resonator. The difference between the resonators makes the respective spurious responses different. This allows for filters constructed from a cascade of these resonators to exhibit reduced spurious responses.Type: GrantFiled: March 17, 2016Date of Patent: April 10, 2018Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Roy H. Olsson, Vincent M. Hietala
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Patent number: 9865987Abstract: An optical second-harmonic generator (or spontaneous parametric down-converter) includes a microresonator formed of a nonlinear optical medium. The microresonator supports at least two modes that can be phase matched at different frequencies so that light can be converted between them: A first resonant mode having substantially radial polarization and a second resonant mode having substantially vertical polarization. The first and second modes have the same radial order. The thickness of the nonlinear medium is less than one-half the pump wavelength within the medium.Type: GrantFiled: June 5, 2017Date of Patent: January 9, 2018Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Matt Eichenfield, Jeremy Moore, Thomas A. Friedmann, Roy H. Olsson, Michael Wiwi, Camille Padilla, James Kenneth Douglas, Khalid Mikhiel Hattar
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Patent number: 9646874Abstract: Thermally isolated devices may be formed by performing a series of etches on a silicon-based substrate. As a result of the series of etches, silicon material may be removed from underneath a region of an integrated circuit (IC). The removal of the silicon material from underneath the IC forms a gap between remaining substrate and the integrated circuit, though the integrated circuit remains connected to the substrate via a support bar arrangement that suspends the integrated circuit over the substrate. The creation of this gap functions to release the device from the substrate and create a thermally-isolated integrated circuit.Type: GrantFiled: August 5, 2013Date of Patent: May 9, 2017Assignee: Sandia CorporationInventors: Kenneth Wojciechowski, Roy H. Olsson, Peggy J. Clews, Todd Bauer
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Patent number: 9641154Abstract: A single crystal micromechanical resonator includes a suspended plate of lithium niobate or lithium tantalate. The suspended plate and a support structure are formed from a single crystal.Type: GrantFiled: November 11, 2016Date of Patent: May 2, 2017Assignee: Sandia CorporationInventors: Roy H. Olsson, Thomas A. Friedmann, Sara Jensen Homeijer, Michael Wiwi, Khalid Mikhiel Hattar, Blythe Clark, Todd Bauer, Stuart B. Van Deusen
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Publication number: 20170054432Abstract: The present invention relates to a single crystal micromechanical resonator. In particular, the resonator includes a lithium niobate or lithium tantalate suspended plate. Also provided are improved microfabrication methods of making resonators, which does not rely on complicated wafer bonding, layer fracturing, and mechanical polishing steps. Rather, the methods allow the resonator and its components to be formed from a single crystal.Type: ApplicationFiled: November 11, 2016Publication date: February 23, 2017Inventors: Roy H. Olsson, Thomas A. Friedmann, Sara Jensen Homeijer, Michael Wiwi, Khalid Mikhiel Hattar, Blythe Clark, Todd Bauer, Stuart B. Van Deusen
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Patent number: 9549704Abstract: Embodiments of neural interfaces according to the present invention comprise sensor modules for sensing environmental attributes beyond the natural sensory capability of a subject, and communicating the attributes wirelessly to an external (ex-vivo) portable module attached to the subject. The ex-vivo module encodes and communicates the attributes via a transcutaneous inductively coupled link to an internal (in-vivo) module implanted within the subject. The in-vivo module converts the attribute information into electrical neural stimuli that are delivered to a peripheral nerve bundle within the subject, via an implanted electrode. Methods and apparatus according to the invention incorporate implantable batteries to power the in-vivo module allowing for transcutaneous bidirectional communication of low voltage (e.g. on the order of 5 volts) encoded signals as stimuli commands and neural responses, in a robust, low-error rate, communication channel with minimal effects to the subjects' skin.Type: GrantFiled: June 11, 2008Date of Patent: January 24, 2017Assignee: Sandia CorporationInventors: Stephen P. Buerger, Roy H. Olsson, III, Kenneth E. Wojciechowski, David K. Novick, Deepesh K. Kholwadwala
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Patent number: 9525398Abstract: The present invention relates to a single crystal micromechanical resonator. In particular, the resonator includes a lithium niobate or lithium tantalate suspended plate. Also provided are improved microfabrication methods of making resonators, which does not rely on complicated wafer bonding, layer fracturing, and mechanical polishing steps. Rather, the methods allow the resonator and its components to be formed from a single crystal.Type: GrantFiled: May 27, 2014Date of Patent: December 20, 2016Assignee: Sandia CorporationInventors: Roy H. Olsson, Thomas A. Friedmann, Sara Jensen Homeijer, Michael Wiwi, Khalid Mikhiel Hattar, Blythe Clark, Todd Bauer, Stuart B. Van Deusen
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Patent number: 9484216Abstract: The present invention provides methods for etching semiconductor devices, such aluminum nitride resonators. The methods herein allow for devices having improved etch profiles, such that nearly vertical sidewalls can be obtained. In some examples, the method employs a dry etch step with a primary etchant gas that omits BCl3, a common additive.Type: GrantFiled: June 2, 2015Date of Patent: November 1, 2016Assignee: Sandia CorporationInventors: Todd Bauer, Andrew John Gross, Peggy J. Clews, Roy H. Olsson
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Patent number: 9337800Abstract: A microresonator with an input electrode and an output electrode patterned thereon is described. The input electrode includes a series of stubs that are configured to isolate acoustic waves, such that the waves are not reflected into the microresonator. Such design results in reduction of spurious modes corresponding to the microresonator.Type: GrantFiled: October 10, 2012Date of Patent: May 10, 2016Assignee: Sandia CorporationInventors: Roy H. Olsson, III, Kenneth Wojciechowski, Darren W. Branch
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Patent number: 9276557Abstract: An acoustically coupled frequency selective radio frequency (RF) device is provided. The device includes a piezoelectric substrate overlain by a plurality of electrodes. The device further includes a pair of RF input terminals at least one of which is electrically connected to at least one of the electrodes, and a pair of output RF terminals, at least one of which is electrically connected to at least one other of the electrodes. At least one of the electrodes is electromechanically reconfigurable between a state in which it is closer to a face of the piezoelectric substrate and at least one state in which it is farther from the face of the piezoelectric substrate.Type: GrantFiled: July 1, 2013Date of Patent: March 1, 2016Assignee: Sandia CorporationInventors: Christopher Nordquist, Roy H. Olsson, Sean Michael Scott, Kenneth Wojciechowski, Darren W. Branch
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Patent number: 9270281Abstract: Apparatuses and methods for tuning center frequencies are described herein. Examples of tuning described herein including tuning using feedback from the resonator. Variable gain feedback for tuning of acoustic wave resonators is provided in some examples. An example apparatus may include a resonator and a feedback loop. The resonator may be configured to receive a tuning signal and to provide a feedback signal. The feedback signal may be based on the tuning signal. The feedback loop may be configured to receive the feedback signal from the resonator. The feedback loop further may be configured to provide the tuning signal to actively tune a center frequency of the resonator. The tuning signal may be based on the feedback signal.Type: GrantFiled: October 11, 2013Date of Patent: February 23, 2016Assignee: Sandia CorporationInventors: Kenneth Wojciechowski, Roy H. Olsson
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Patent number: 9203134Abstract: A micromechanical resonator is disclosed. The resonator includes a resonant micromechanical element. A film of annealable material can be deposited on a facial surface of the element. The resonance of the element can be tuned by annealing the deposited film. Also disclosed are methods of applying a film on a resonator and annealing the film, thereby tuning one or more resonant properties of the resonator.Type: GrantFiled: February 28, 2013Date of Patent: December 1, 2015Assignee: Sandia CorporationInventors: Michael David Henry, Roy H. Olsson, Karl Douglas Greth, Travis Ryan Young, Janet Nguyen, James E. Stevens
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Patent number: 8669823Abstract: An ovenized micro-electro-mechanical system (MEMS) resonator including: a substantially thermally isolated mechanical resonator cavity; a mechanical oscillator coupled to the mechanical resonator cavity; and a heating element formed on the mechanical resonator cavity.Type: GrantFiled: April 9, 2012Date of Patent: March 11, 2014Assignee: Sandia CorporationInventors: Roy H. Olsson, Kenneth Wojciechowski, Bongsang Kim