The Penn State Research Foundation

University of Chicago

Northwestern University

USA As Represented by Secretary of the Navy

The United States of America As Represented by the United States

University of Minnesota

The United States of America As Represented by the Department of Energy

United States Department of Energy

Michael T Lanagan

Clive A Randall

Tobin Jay Marks

Stephen E Dorris

Roger B Poeppel

Kenneth C Goretta

Amanda Lou Baker

Jing Guo

Hanzheng Guo

Victor A Maroni

Barton C Prorok

Neng Guo

Sara A DiBenedetto

Uthamalingam Balachandran

Paul R Ohodnicki, Jr

David A Tonn

Thomas R Shrout

Massimiliano Delferro

John C Parker

David S Kupperman

Steven Danyluk

Ulrich Welp

Wei Chen

Dean J Miller

Suvankar Sengupta

John J Picciolo

Carlo Pantano

Tomohiro Sogabe

Ramakrishnan Rajagopalan

Richard W Siegel

Susan M Safford

Donglu Shi

Xiao-Hong Zhu

Kevin Byerly

Nan Chen

Mark A Ratner

Qing X Yang

Michael McNallan

Nicholas Smith

Maryam Sarkarat

Lisa A Fredin

Zhong Li

Hannes M Wiesner

Eugene Furman

Steven E Perini

Byeong-Yeul Lee

Hyuk-Joon Youn

Brandon L Fisher

Vitalii K Valsko-Vlasov

Robert Troendly

George A Yaconi

Sebastian Rupprecht

Jieguang Hu

Dinesh Agrawal

Navid P Gandji

Hoi Kwan Lee

Methods and systems including a microwave radiation source are described. A first region of a pure magnetic field can be generated in a first processing zone using a microwave radiation source of the first processing zone. The first processing zone can be a single mode microwave radiation chamber. A second region of a pure electric field can be generated in the first processing zone using the microwave radiation source. The second region can be spatially distinct from the first region. A first portion of an amorphous alloy can be loaded automatically into the first processing zone. The first portion can be positioned in an annealing region. The annealing region can be a single field region selected from the first region and the second region. The first portion can be heated in the annealing region. The first portion can be automatically unloaded from the first processing zone.

In-line microwave processing of alloys

Cold sintering of materials includes using a process of combining at least one inorganic compound, e.g., ceramic, in particle form with a solvent that can partially solubilize the inorganic compound to form a mixture; and applying pressure and a low temperature to the mixture to evaporate the solvent and densify the at least one inorganic compound to form sintered materials.

Cold sintering ceramics and composites

An antenna capable of being joined to an antenna feed perpendicular to a ground plane includes a conductive radiator and a circular wafer surrounding the radiator. The radiator is tubular and has a longitudinal slot along the entire length thereof, parallel to the radiator's axis. The antenna feed can be connected across the slot. The wafer, made either or a conventional high dielectric isotropic material or of a uniaxial dielectric material, is spaced apart from the radiator and has a thickness approximately equal to the width of the slot, a diameter wherein a ratio of a diameter of the radiator to the diameter of the wafer is approximately 35%, and is located at a height above the ground plane equal to approximately 35% of the length of the radiator. The material of the wafer has a dielectric tensor with high polarizability in the axial direction and can be applied to preexisting antennas. This antenna gives enhanced bandwidth over ordinary slotted antennas.

Broadband slotted antenna

An apparatus for transmitting and receiving radiofrequency (RF) signals in a magnetic resonance imaging system for proton and X-nuclear imaging includes at least one radiofrequency (RF) coil and an ultrahigh dielectric constant material incorporated within the at least one RF coil. The permittivity of the ultrahigh dielectric constant material depends on a temperature of the material and is tunable. The apparatus also includes a temperature controller that is thermally coupled to the ultrahigh dielectric constant material. The temperature controller is configured to control a temperature of the ultrahigh dielectric constant material to tune and optimize the permittivity of the ultrahigh dielectric constant material. A chemical structure and composition of the ultrahigh dielectric constant material is selected to control and optimize the permittivity and a dielectric loss of the ultrahigh dielectric constant material and a temperature dependence of the ultrahigh dielectric constant material. The apparatus provides denoising effect, high RF coil transmission and reception efficiencies, and improved signal-to-noise ratio for magnetic resonance or spectroscopic imaging applications and has a potential to advance clinical imaging for diagnosis.

Apparatus and method for tuning the permittivity of ultrahigh dielectric constant materials in an RF coil for MR imaging

Cold sintering composites and ceramics

A nanoparticle composition comprising a substrate comprising a metal oxide component and an aluminum oxide component; and a metallocene olefin polymerization catalyst component coupled to the substrate is disclosed. The metal oxide component is homogenously dispersed throughout the nanocomposite composition.

Aluminum metallic nanoparticle-polymer nanocomposites for energy storage

High energy density nanocomposites and related methods of preparation

A self healing high energy glass capacitor is provided. The capacitor can have a glass layer with a top surface and a bottom surface. A top sacrificial layer can extend across the top surface and a bottom sacrificial layer can extend across the bottom surface. In addition, a top electrode can extend across the top sacrificial layer and a bottom electrode can extend across the bottom sacrificial layer. In some instances the glass capacitor has an energy breakdown of at least 6 joules per cubic centimeter.

Self healing high energy glass capacitors

Disclosed are metal oxide-polymer composites having a substrate comprising a metal oxide component, an aluminum oxide component, and a metallocene olefin polymerization catalyst component coupled to the substrate. The compositions can be used as thin films in an insulator device. Also disclosed is a method of preparing such compositions.

The disclosed invention relates to Bi O &mdash;ZnO&mdash;Ta O dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K of between 58 and 80, a low dielectric loss (tan &dgr;<0.003), and a TCC<30 ppm/&deg; C. Ceramic compositions produced include those represented by Bi (ZnTa ) O where 0.57&lE;x&lE;1.0, Bi (ZnTa ) O where 1.0&lE;y&lE;3.0, as well as by Bi (ZnTa ) O where 1.0&lE;y&lE;3.0 with the proviso that y is not&equals;2.0. Solid solutions of compounds defined by the formula r(Bi (Zn Ta ) O )-(1&minus;r)(Bi Zn )(Zn Ta )O )) where 0<r<1 also are produced.

Bismuth pyrochlore microwave dielectric materials

An optical current transducer configured to sense current in the conductor is disclosed. The optical current transducer includes a light source and a polarizer that generates linearly polarized light received from a the light source. The light is communicated to a magneto-optic garnet that includes, among other elements, bismuth, iron and oxygen and is coupled to the conductor. The magneto-optic garnet is configured to rotate the polarization of the linearly polarized light received from the polarizer. The optical current transducer also includes an analyzer in optical communication with the magneto-optic garnet. The analyzer detects the rotation of the linearly polarized light caused by the magneto-optic garnet.

Magneto-optic current sensor

A method of preparing a high temperature superconductor. A method of preparing a superconductor includes providing a powdered high temperature superconductor and a nanophase material. These components are combined to form a solid compacted mass with the material disposed in the polycrystalline high temperature superconductor. This combined mixture is rapidly heated, forming a dispersion of nanophase size particles without a eutectic reaction. These nanophase particles can have a flat plate or columnar type morphology.

Engineered flux-pinning centers in BSCCO TBCCO and YBCO superconductors

A (BiPb).sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x (Bi223) superconductor with high J.sub.c, phase purity, density and mechanical strength is formed from Bi2223 powder which is synthesized from a mixture of Bi.sub.2 O.sub.3, PbO, SrCO.sub.3, CaCo.sub.3 and CuO. The mixture is milled, then dried and calcined to synthesize the Bi2223 powder with the desired phase purity. The calcination is performed by heating the dried mixture for 50 hours at 840.degree. C. The partially synthesized powder is then milled for 1-4 hours before calcining further for another 50 hours at 855.degree. C. to complete the synthesis. After calcination, the Bi2223 powder is cold pressed to a predetermined density and sinter forged under controlled temperature and time to form a Bi2223 superconductor with the desired superconducting properties.

(Bi, Pb).sub.2, Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x superconductor and

A method and an apparatus for nondestructive detecting and evaluating chas in the microstructural properties of a material by employing one or more magnetostrictive transducers linked to the material by means of one or more sonic signal conductors. The magnetostrictive transducer or transducers are connected to a pulser/receiver which in turn is connected to an oscilloscope. The oscilloscope is connected to a computer which employs an algorithm to evaluate changes in the velocity of a signal transmitted to the material sample as function of time and temperature.

Apparatus for monitoring high temperature ultrasonic characterization

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State College, PA, United States of America

Michael T Lanagan