University of Florida Research Foundation, Incorporated

David Patrick Arnold

Shuo Cheng

Nicolas Garraud

Mark Sheplak

Jennifer S Andrew

Vinod Reddy Challa

Christopher David Meyer

Camilo Velez Cuervo

Alexandra Garraud

Matthew Bauer

Toshikazu Nishida

Ololade D Oniku

Jon Paul Dobson

Patrick G Traynor

Karl Robert Zawoy

Carlos Rinaldi

Kyle Douglas Allen

Christian Peeters

Walter N Scaife

William M Humphreys, Jr

Elena Georgina Yarmola

Zachary Kaufman

Israel Boniche

Sivaraman Masilamani

Vijay Chandrasekharan

Jeremy Sells

Benjamin James Bowers

Sheetal Bhalchandra Shetye

Janhavi Shariniwas Agashe

Xiao Wen

Embodiments of the present disclosure integrate magnetoelectric nanowire arrays within antenna assemblies to form ultra-compact antennas. An exemplary method comprises using a dielectrophoretic force to orient a magnetoelectric nanowire across an electrode gap separating a pair of electrodes; and transmitting or receiving electromagnetic waves through a magnetoelectric effect of the magnetoelectric nanowire. Other methods, apparatuses, and systems are also presented.

Magnetoelectric nanowire based antennas

The present disclosure relates to systems and methods for tunable electrodynamic wireless power receivers. In some examples, a wireless power receiver electromechanically converts energy from a magnetic field using an oscillating or continuously rotating magnet. A sensing device detects an operational parameter of the receiver, and a tuning device initiates a tuning action based on the operational parameter.

Tunable electrodynamic wireless power receivers

Embodiments of the present disclosure provide systems and methods for wirelessly charging household batteries without having to remove the batteries from battery-powered user-devices, consumer electronics, or other applications to which the batteries are being deployed. In one embodiment, a wireless rechargeable battery system comprises an electrical energy storage element for a wireless rechargeable battery; a wireless receiver for the wireless rechargeable battery, wherein the wireless receiver is configured to supply electrical energy to the electrical energy storage element in a presence of a magnetic field from a charging base station; and an internal electronics circuitry for the wireless rechargeable battery, wherein the internal electronics circuitry couples the electrical energy storage element and the wireless receiver.

Wireless rechargeable battery systems and methods

Embodiments of the present disclosure integrate magnetoelectric nanowire arrays within antenna assemblies to form ultra-compact antennas. An exemplary nanowire antenna array device comprises a first electrode positioned across a second electrode, wherein an electrode gap separates the first electrode and the second electrode; and a magnetoelectric nanowire connected to the first electrode and the second electrode across the electrode gap without substrate clamping, wherein the nanowire antenna array device receives or transmits electromagnetic waves through the magnetoelectric effect.

Wireless power transmission (WPT) systems are provided. For example, the WPT system can use one or more power transmitting coils and a receiver for electromagnetically coupled wireless power transfer. The electrodynamic receiver can be in the form of an electrodynamic transducer where a magnet is allowed to oscillate near a receiving coil to induce a voltage in the receiving coil, a piezoelectric transducer where the magnet causes a vibrating structure with a piezoelectric layer to move, an electrostatic transducer where movement of the magnet causes a capacitor plate to move, or a combination thereof. An alternating magnetic field from the transmitting coil(s) excites the magnet in the receiver into mechanical resonance. The vibrating magnet then functions similar to an energy harvester to induce voltage/current on an internal coil, piezoelectric material, or variable capacitor. Embodiments utilize magnetic coupling and electromechanical resonance for safe, spatially distributed, low-frequency power delivery to portable devices.

Wireless power transfer via electrodynamic coupling

Various embodiments to mitigate the contamination of electroplated cobalt-platinum films on substrates are described. In one embodiment, a method of manufacture of a device includes depositing a diffusion barrier over a substrate, depositing a seed layer upon the diffusion barrier, and depositing a cobalt-platinum magnetic layer upon the seed layer. In a second embodiment, a method of manufacture of a device may include depositing a diffusion barrier over a substrate and depositing a cobalt-platinum magnetic layer upon the diffusion barrier. In a third embodiment, a method of manufacture of a device may include depositing an adhesion layer over a substrate, depositing a seed layer upon the adhesion layer, and depositing a cobalt-platinum magnetic layer over the seed layer. Based in part on these methods of manufacture, improvements in the interfaces between the layers can be achieved after annealing with substantial improvements in the magnetic properties of the cobalt-platinum magnetic layer.

Method of manufacturing electroplated cobalt-platinum films on substrates

Embodiments of the present disclosure relate to methods and systems for switching a magnetic field external to a magnet assembly having two permanent magnets, including a fixed permanent magnet portion and a switching permanent magnet portion, where a switching magnetic field is used to switch the magnetization of the switching permanent magnet portion, but not switch the magnetization of the fixed permanent magnet portion. In this way, the fixed permanent magnet portion has a fixed magnetization, such that the direction of magnetization of the fixed permanent magnet portion remains the same during switching of the magnetization of the switching permanent magnet portion, and the switching permanent magnet portion has a switching magnetization, such that the direction of magnetization of the switching permanent magnet portion is switched during switching of the magnetization of the switching permanent magnet portion.

Axisymmetric electropermanent magnets

The present disclosure relates to systems and methods for electrodynamic wireless power receivers. In some examples, a wireless power receiver electromechanically converts energy from a magnetic field. The wireless power receiver includes a planar suspension structure and at least one magnet. The planar suspension structure is tuned to cause oscillation of the at least one magnet at a resonance frequency based on a frequency of the time-varying magnetic field to generate electrical energy in the wireless power receiver.

Electrodynamic wireless power receiver

Nanocomposite magnetic materials, methods of manufacturing nanocomposite magnetic materials, and magnetic devices and systems using these nanocomposite magnetic materials are described. A nanocomposite magnetic material can be formed using an electro-infiltration process where nanomaterials (synthesized with tailored size, shape, magnetic properties, and surface chemistries) are infiltrated by electroplated magnetic metals after consolidating the nanomaterials into porous microstructures on planar substrates. The nanomaterials may be considered the inclusion phase, and the magnetic metals may be considered the matrix phase of the multi-phase nanocomposite.

Nanocomposite magnetic materials for magnetic devices and systems

The present disclosure is directed towards characterizing liquids through the use of magnetic discs that rotate in response to dynamic magnetic fields. In some embodiments, a light beam is transmitted into the liquid while the magnetic discs rotate, and one or more parameters of a light beam signal associated with the transmitted light beam are identified. Various characteristics of the liquid may be detected based on the one or more parameters of the light beam signal.

Characterizing liquids using magnetic discs

Embodiments of the subject invention relate to an electropermanent magnet core (EPM core) having two permanent magnets (or two permanent magnet portions where each portion can have one or more permanent magnets), including a fixed permanent magnet portion and a switching permanent magnet portion, where a switching magnetic field is used to switch the magnetization of the switching permanent magnet portion, but not switch the magnetization of the fixed permanent magnet portion. In this way, the fixed permanent magnet portion has a fixed magnetization, such that the direction of magnetization of the fixed permanent magnet portion remains the same during switching of the magnetization of the switching permanent magnet portion, given the magnitude and duration of the switching magnetic field used to switch the magnetization of the switching permanent magnet portion, and the switching permanent magnet portion has a switching magnetization, such that the direction of magnetization of the switching permanent magnet portion is switched during switching of the magnetization of the switching permanent magnet portion, given the magnitude and duration of the switching magnetic field used to switch the magnetization of the switching permanent magnet portion.

Embodiments of a magnetic field sensor of the present disclosure includes magnetoelectric nanowires suspended above a substrate across electrodes without substrate clamping. This results in enhanced magnetoelectric coupling by reducing substrate clamping when compared to layered thin-film architectures. Accordingly, the magnetoelectric nanowires of the magnetic field sensor generate a voltage response in the presence of a magnetic field.

Powerless magnetic field sensing using magnetoelectric nanowires

Systems and methods for detecting counterfeit magnetic stripes are provided. A method can include detecting magnetic flux transitions encoded on a magnetic stripe and the variation in distances between clocking flux transitions. The distance between variations in clocking flux transitions is greater in counterfeit cards than in legitimate cards. The variations in distances can be compared with known values of legitimate cards to detect the presence of a counterfeit magnetic stripe.

Detecting counterfeit magnetic stripe cards using encoding jitter

Provided herein is a magnetic apparatus for collecting superparamagnetic particles from a subject. The superparamagnetic particles are previously injected into the subject and have ligands bound thereto that are specific for one or more non-cell biomarkers. In one embodiment, the superparamagnetic particles are injected into and retrieved from a cavity such as a joint cavity. These compositions and methods allow for the sequestration and removal of inflammatory mediators, as both a diagnostic of the local immune response and a therapeutic that can reduce inflammation in the local disease environment.

Growing community of inventors

Gainesville, FL, United States of America

David Patrick Arnold