Hewlett-packard Development Company, L.p.

Xaar Technology Limited

Other

Oregon State University

Nanoproducts Corporation

Technology Ventures, Inc.

Technology Ventures, L.l.c.

Eveready Battery Company, Inc.

Intelligent Energy Inc.

Peter Mardilovich

Gregory Scott Herman

Randy Hoffman

David A Champion

James O'Neil

Pavel Kornilovich

Anthony M Fuller

Qingqiao Wei

Tony S Cruz-Uribe

David Punsalan

Kurt M Ulmer

James William Stasiak

Lawrence H White

James Elmer Abbott, Jr

Christopher C Beatty

Brady J Gibbons

Erik D Torniainen

Kevin Francis Peters

John Christopher Rudin

Laura Kramer

Jian-Gang Weng

Jeffrey Todd Mabeck

John Philip Tatum

Samson Berhane

David Cann

Alexander N Govyadinov

Sriram Ramamoorthi

Haggai Karlinski

Niranjan Thirukkovalur

Yuval Charles Avniel

Adrian Derek Geisow

Adel Jilani

Neal W Meyer

Arjang Fartash

Chih-hung Chang

Chinmay Suresh Betrabet

Dennis M Lazaroff

Dmitri Routkevitch

Christopher Shelton

Robert Errol McMullen

Yu-Jen Chang

Stephanie Hooker

Alex Govyadinov

Stephen S Williams

Song-Won Ko

Irina Nikolaevna Milonova

Eric Andrew Patterson

Mark W Hoskins

Doo-Hyoung Lee

Tapesh K Yadav

Rio Rivas

Douglas A Keszler

James A Feinn

Jeremy T Anderson

Joseph W Tsang

John M Koegler, Iii

Jong-Souk Yeo

Benjamin L Clark

Ronald L Enck

Thomas R Strand

Cary G Addington

David C Kamp

Hai Q Chiang

Jack Lavier

Peter Boltryk

J Daniel Smith

Jonald R Gradwohl

Pavel Komilovich

David L Neiman

Susan Trolier-McKinstry

Shell Elaine Whittington

Bryan Alexander Maack

Yu Hong Jeon

Alexandru Cazacu

William Wren

Trent Borman

Paval Kornilovich

Stephen F Bylund

Chris Shelton

Kurl Ulmer

Parkpoom Jarupoom

James Elmer Abbott

Eric A Patterson

Eric Patterson

Chinmay Betrabet

Chih-Hung Oregon States University Chang

Yu-Jen Oregon States University Chang

Doo-Hyoung Oregon State University Lee

James O'Neill

The present invention relates to a method for identifying a solid solution ceramic material of a plurality of perovskite compounds which exhibits an electric field induced strain derived from a reversible phase transition, as well as a method for making such ceramic materials and ceramic materials obtainable therefrom. In particular, the present invention is directed to a method of identifying a solid solution ceramic material of at least three perovskite compounds which exhibits an electric field induced strain derived from a reversible phase transition; said method comprising the steps of: i) determining a molar ratio of at least one tetragonal perovskite compound to at least one non-tetragonal perovskite compound which, when combined to form a solid solution, provides a ceramic material comprising a major portion of a tetragonal phase having an axial ratio c/a of greater than 1.005 to 1.04; and ii) determining a molar ratio of at least one additional non-tetragonal perovskite compound to the combination of perovskite compounds from step i) at the determined molar ratio which, when combined to form a solid solution, provides a ceramic material comprising a major portion of a pseudo-cubic phase having an axial ratio c/a of from 0.995 to 1.005 and/or a rhombohedral angle of 90&#xb1;0.5 degrees.

Methods of identifying and preparing a ceramic material exhibiting an electric field induced strain

The present invention relates to a bismuth-based solid solution ceramic material, as well as a process for preparing the ceramic material and uses thereof, particularly in an actuator component employed, for example, in a droplet deposition apparatus. In particular, the present invention relates to a ceramic material having a general chemical formula (I): (I): x(BiNa)TiO-y(BiK)TiO-zSrHfO-zSrZrO, wherein x+y+Z+Z=1; y, (z+z)&#x2260;0; x&#x2265;0. In embodiments, the present invention also relates to a ceramic material having a general chemical formula (II): x(Bi0.5Na0.5)TiO3-y(Bi0.5K0.5)TiO3-y(Bi0.5K0.5)TiO3-ZiSrHfO3-z2SrZrO3, wherein x+y+z&#x2212;i+z2=1; x, y, fa+z2)&#x2260;0; as well as a ceramic material of general formula (III): y(BiK)TiO-zSrHfO-zSrZrO, wherein y+z,+z=1; y, (z+z)&#x2260;0.

Ceramic material comprising a pseudo-cubic phase, a process for preparing and uses of the same

A method of forming a micro-structure involves forming a multi-layered structure including i) an oxidizable material layer on a substrate and ii) another oxidizable material layer on the oxidizable material layer. The oxidizable material layer is formed of an oxidizable material having an expansion coefficient, during oxidation, that is more than 1. The method further involves forming a template, including a plurality of pores, from the other oxidizable material layer, and growing a nano-pillar inside each pore. The nano-pillar has a predefined length that terminates at an end. A portion of the template is selectively removed to form a substantially even plane that is oriented in a position opposed to the substrate. A material is deposited on at least a portion of the plane to form a film layer thereon, and the remaining portion of the template is selectively removed to expose the nano-pillars.

Method of forming a micro-structure

actuator component for a droplet deposition head made up of a number of patterned layers, each layer extending in a plane normal to a layering direction, with the layers being stacked one upon another in said layering direction. A row of fluid chambers is formed within the layers, with the row extending in a row direction, which is substantially perpendicular to the layering direction. Each fluid chamber is provided with a respective nozzle and a respective actuating element, which is actuable to cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles. A row of inlet passageways is also formed within the layers of the actuator component, with the row extending in the row direction. Each inlet passageway is fluidically connected so as to supply fluid to a respective one of said fluid chambers. In some embodiments, either a row of outlet passageways or a second row of inlet passageways is additionally formed within the layers; in either case, such row extends in the row direction. Where outlet passageways are present, each is fluidically connected so as to receive fluid from a respective one of said fluid chambers. At least one of the rows of passageways is staggered, whereby at least some of the members of the staggered row in question are offset from their neighbours in an offset direction for the staggered row in question that is perpendicular to the row direction. The row of fluid chambers may also be staggered.

Droplet deposition head and actuator component therefor

The present disclosure is drawn to a piezoelectric thin film stack and method of preparing the same. The piezoelectric thin film stack can comprise a substrate with an oxide application surface, a metal oxide adhesive blend layer applied to the oxide application surface, and a piezoelectric film applied directly to the metal oxide adhesive blend layer.

Piezoelectric thin film stack

A droplet deposition head having a fluid chamber connected to a droplet ejection nozzle and to a reservoir for the fluid, and a piezoelectric actuator element formed at least in part by a fluid chamber wall having an electrode thereon, which element is displaceable in response to a drive voltage to generate a pressure in the chamber to eject a droplet of fluid from the chamber through the nozzle wherein the electrode is provided with a passivation coating which comprises, at least in part, a laminate comprising an inorganic insulating layer nearest to or contacting the electrode and an organic insulating layer overlying the inorganic insulating layer wherein defects in the insulating layers tend to be misaligned at the interface there between and wherein the inorganic insulating layer has thickness less than or equal to 500 nm and the organic insulating layer has a thickness less than 3 &#x3bc;m.

Droplet deposition head

A piezoelectric thin film element comprising a first electrode, a second electrode and one or more piezoelectric thin films there between wherein the first electrode is a platinum metal electrode having an average grain size greater than 50 nm and wherein a piezoelectric thin film adjacent the platinum metal electrode comprises a laminate having a plurality of piezoelectric thin film layers wherein a piezoelectric thin film layer contacting the platinum metal electrode comprises lead zirconate titanate (PZT) of composition at or about PbZrTiOwhere 0&#x3c;x&#x2264;0.60 and has a degree of pseudo cubic {100} orientation greater than or equal to 90%.

Piezoelectric thin film element

An inkjet printhead having a fluidic chamber substrate, the fluidic chamber substrate having at least two droplet units provided in an array therein, the droplet units comprising: a fluidic chamber, a first fluidic port provided at a first surface of the fluidic chamber substrate, wherein the first fluidic port is in fluidic communication with the fluidic chamber, a nozzle formed in a nozzle layer provided at a second surface of the fluidic chamber substrate; and a vibration plate provided at the first surface of the fluidic chamber substrate, the vibration plate comprising an actuator for effecting pressure fluctuations within the fluidic chamber; and wherein the droplet units are arranged adjacent each other about an axis extending substantially in a width direction of the droplet units, wherein the first fluidic ports of the droplet units are staggered a first stagger offset distance from each other substantially in a length direction of the droplet units, and wherein a wiring layer extends over the first surface of the fluidic chamber substrate and between the first fluidic ports.

Inkjet printhead with staggered fluidic ports

A method of adhering a cover layer to a substrate includes forming an array of nano-structures on a substrate. A flowable material is applied to the substrate, the flowable material substantially enveloping the nano-structures on the substrate. The flowable material is solidified to form a cover layer on the substrate, the cover layer being anchored to the substrate via the nano-structures.

Adhesion-promoting surface

In an example of a method for making a nano-structure, an aluminum layer is partially anodized to form a porous anodic alumina structure. The aluminum layer is positioned on an oxidizable material layer. The porous anodic alumina structure is exposed to partial anisotropic etching to form tracks within the porous anodic alumina structure. A remaining portion of the aluminum layer is further anodized to form paths where the tracks are formed. The oxidizable material layer is anodized to from an oxide, where the oxide grows through the paths formed within the porous anodic alumina structure to form a set of super nano-pillars.

Nano-structure and method of making the same

The present disclosure is drawn to a thin film stack including a substrate, a metal layer, and an adhesive layer. The adhesive layer comprises a blend of zinc oxide and tin oxide, and the adhesive layer is adhered between the substrate and the metal layer.

Thin film stack

A lead-free piezoelectric ceramic material has the general chemical formula xBiCoO3-y(Bi0.5Na0.5)TiO3-z(Bi0.5K0.5)TiO3, xBiCoO3-y(Bi0.5Na0.5)TiO3-zNaN-bO3, xBiCoO3-y(Bi0.5Na0.5)TiO3-zKNbO3, xBiCoO3-yBi(Mg0.5Ti0.5)O3-z(Bi0.5Na0.5)TiO3, xBiCoO3-yBa-TiO3-z(Bi0.5Na0.5)TiO3, or xBiCoO3-yNaNbO3-zKNbO3; wherein x+y+z=1, and x, y, z&#x2260;0.

Lead-free piezoelectric material

An example provides an apparatus including a substrate, a metal layer, and an adhesive layer adhered between the substrate and the metal layer, the adhesive layer comprising indium oxide, tin oxide, gallium oxide, indium-tin oxide, indium-gallium oxide, tin-gallium oxide, or indium-tin-gallium oxide.

Film stack including adhesive layer

An article is provided, the article including a substrate having a surface with a first wettability characteristic. A nano-structure array is formed on the surface of the substrate to provide a nano-structured surface having a second wettability characteristic. A thin-layer surface coating is formed on the nano-structured surface, the thin-layer surface coating being configured to tune the nano-structured surface to a target wettability characteristic.

Article with controlled wettability

Growing community of inventors

Corvallis, OR, United States of America

Peter Mardilovich