Abstract: The disclosed technology relates to a heat transfer system and heat transfer method employing stable colloidal dispersion of a) a non-conductive, non-aqueous and non-water miscible dielectric oleaginous heat transfer fluid, b) at least one solid nanoparticle, and c) a surfactant. In particular, the technology relates to a stable colloidal dispersion with low electrical conductivity, low flammability, and low freeze point that provides excellent peak temperature reduction in a heat transfer system, such as that for cooling a battery pack or a power system of an electric vehicle.

Abstract: A linear resonant actuator includes a ferritic tube, a movable mass, first and second flexures, and a set of one or more flexures. The ferritic tube has an axis extending from a first end of the ferritic tube to a second end of the ferritic tube. The movable mass has a set of magnet sections disposed along the axis. First and second flexures mechanically couple first and second ends of the movable mass to the ferritic tube. The flexures suspend the movable mass within the ferritic tube and allow movement of the movable mass along the axis. The electric coil(s) are attached to the ferritic tube and extend around the movable mass, between the ferritic tube and the movable mass. Each magnet section has magnetic poles disposed at different positions along the axis, and like magnetic poles of adjacent magnetic sections face each other.

Abstract: A manufacturing method of a wavelength conversion device, and a wavelength conversion device manufactured by the method are provided. The manufacturing method of the wavelength conversion device of the disclosure includes the following steps. A wavelength conversion material layer is formed on a substrate by a sol-gel method. The wavelength conversion material layer includes a first colloidal material, and a fluorescent material. The wavelength conversion material layer is solidified, thereby forming a wavelength conversion layer including a plurality of first microstructures. The step of solidifying the wavelength conversion material layer includes irradiating the wavelength conversion material layer with a laser. The manufacturing method of the wavelength conversion device and the wavelength conversion device provided by the disclosure have advantages such as a simple process, and low manufacturing cost.

Abstract: Described herein is a polyurethane including a reaction product of an isocyanate component, a polyol component, and graphene nano platelets. The graphene nano platelets are reacted in an amount of from about 0.1 to about 20% by weight, based on a total weight of the polyurethane. The graphene nano platelets have an average lateral dimension (x, y) of from about 1 to about 100 ?m, an average through-plane dimension (z) of from about 5 to about 100 nm, and an oxygen content of from about 0.01 to about 10% by weight, based on a total weight of the graphene nano platelets.

Abstract: Described herein is a cast elastomer including graphene nano platelets and a process for preparing the same.

Abstract: A magnetorheological fluid is provided having a reduced coefficient of friction and favorable settling characteristics. The fluid contains magnetically responsive particles, a carrier fluid, and an amine oleate salt.

Abstract: An endoscopic guide includes a tubular guiding element and a magnetic field source. The tubular body element includes a body including a lumen, a longitudinal cavity, an anchoring head, and a magnetic or ferromagnetic agent. The anchoring head includes an endoscopic balloon. The magnetic or ferromagnetic agent is movable in the longitudinal cavity and configured to fill and empty the endoscopic balloon. The magnetic field source includes a permanent magnet.

Abstract: An insoluble thin hydroxide shell is synthesized on the surface of nanoscale zero-valent iron (NZVI), using a rate-controlled deprotonation method. The hydroxide coated NZVI remains suspended in aqueous phase better than the prior art and can be used to remove groundwater contaminants.

Abstract: A magneto-rheological elastomer that can achieve weight reduction, maintain mechanical properties at an excellent level, and improve magnetic flux density. A magneto-rheological elastomer includes an elastomer base material as a matrix and sendust flakes and spherical sendust powders. The magneto-rheological elastomer is made by mixing the sendust flakes and the spherical sendust powders in the elastomer base material.

Abstract: A solid catalyst is provided. The solid catalyst includes a core particle composed of activated carbon, lignin or iron oxide, and a plurality of hydroxyl groups and sulfonic acid groups formed on the surface of the core particle. A method for preparing a sugar is also provided. The method includes mixing organic acid and the disclosed solid catalyst to form a mixing solution, adding a cellulosic biomass to the mixing solution to proceed to a dissolution reaction, and adding water to the mixing solution to proceed to a hydrolysis reaction to obtain a hydrolysis product.

Abstract: A composite magnetic material includes a needle-like powder and a spherical powder. The needle-like powder includes a soft magnetic material and has an average minor-axis length of 100 nm or less and an average aspect ratio of 3.0 or more and 10.0 or less. The spherical powder includes a soft magnetic material and has an average major-axis length of 100 nm or less and an average aspect ratio of less than 3.0.

Abstract: The present disclosure provides a coated iron particle, or reaction product thereof, comprising an iron particle and a thiol coating disposed on the iron particle. The present disclosure further provides compositions comprising a coated iron particle and a polymer or adhesion promoter. The present disclosure further provides components having a surface and a composition of the present disclosure disposed on the surface. Methods for passivating an iron particle can include introducing a passivation agent having one or more sulfur moieties into a solvent to form a passivation solution; and contacting an iron particle with the passivation solution to form a coated iron particle. Methods for passivating an iron particle can include introducing an iron particle into a solvent to form an iron particle solution; and contacting a passivation agent having one or more sulfur moieties with the iron particle solution to form a coated iron particle.

Abstract: A directional control system of a marine vessel includes a steering control member manually operated by a user and operationally connected to a direction-variation member acting on or in the water, such as at least one rudder blade or at least one outboard engine, the direction-variation member having an angular position that is controlled by the steering control member; and a locking system locking the free variation of the angular position of the direction-variation member, which can be activated and deactivated to allow the variation of angular position and carry out a directional change, the locking system including a hydraulic cylinder having a piston dividing the cylinder into two chambers, which are connected by a bypass circuit that can be opened and closed by a switching member.

Abstract: The present invention relates to a system, apparatus or and method to quantify features of relatively small defects or anomalies on a selected surface. Such defects may be associated with localized corrosion, such as pitting, that takes place on the surface of a metal exposed to a metallic environment.

Abstract: A soft magnetic resin composition contains flat soft magnetic particles, a resin component, and a rheology control agent.

Abstract: A method for producing a fluorescent material is provided. The method includes preparing fluorescent material particles that contain an alkaline earth metal aluminate having a composition represented by (Sr1?x,Eux)4Al14O25, where x satisfies 0.05?x?0.4, and a part of Sr may be substituted by at least one element selected from the group consisting of Mg, Ca, Ba, and Zn; causing the prepared fluorescent material particles to come into contact with a liquid medium containing water; removing at least a portion of the contacted liquid medium to obtain purified fluorescent material particles; causing a phosphate compound to adhere to surfaces of the purified fluorescent material particles to obtain fluorescent material particles to which the phosphate compound is adhered; and heat treating the fluorescent material particles to which the phosphate compound is adhered at 500° C. to 700° C.

Abstract: The present invention is directed to a method for fabricating a gold nanoparticle, the method comprising the steps of contacting a gold ion with a protein, wherein the protein has an inner cavity that can accommodate the gold ion, separating the protein with the encapsulated gold ion(s) from non-encapsulated gold ions, contacting the protein-encapsulated gold ion with a first reductant to reduce the gold ion and form a gold nanocluster seed in the inner cavity of the protein, wherein the first reductant is a strong reductant, and contacting the gold nanocluster seed in the inner cavity of the protein with a second reductant to mineralize and grow the gold nanoparticle.

Abstract: The deep red light-emitting magnesium fluorogermanate phosphor prepared by calcining a mixture comprising a fine magnesium oxide powder having a BET specific surface area in the range of 5-200 m2/g, a fluorine compound, a germanium compound and a manganese compound gives a light emission having a maximum peak of increased strength in the wavelength region of 640-680 nm upon excitation with a light having a wavelength of 400 nm.

Abstract: A luminescence conversion element for wavelength conversion of primary electromagnetic radiation into secondary electromagnetic radiation includes first luminescent material particles that, when excited by the primary electromagnetic radiation, emit a first electromagnetic radiation, a peak wavelength of which is at least 515 nm to at most 550 nm of a green region of the electromagnetic spectrum; second luminescent material particles that, when excited by the primary electromagnetic radiation, emit a second electromagnetic radiation, a peak wavelength of which is at least 595 nm to at most 612 nm of a yellow-red region of the electromagnetic spectrum; and third luminescent material particles that, when excited by the primary electromagnetic radiation, emit a third electromagnetic radiation, a peak wavelength of which is at least 625 nm to at most 660 nm of a red region of the electromagnetic spectrum.

Abstract: Disclosed is a magneto-rheological fluid composition which comprises magnetic particles, a fluid, a dispersant, a structure stabilizer and an anti-friction additive. Particularly, the magnetic particles include non-coated magnetic particles and polyvinyl butyral-coated magnetic particles at the weight ratio of about 1:1 to 4:1. Accordingly, dispersion stability and yield stress are improved substantially when magnetic field is applied to the magneto-rheological fluid.

Abstract: A magnetic fluid composition include a suspension of nano-particles including cross-crystallized multi-metal compounds dispersed in a solvent, the cross-crystallized multi-metal compounds including at least two or more metals having different valencies or oxidation states, the metals selected from the group consisting of a monovalent metal (Me+), a divalent metal (Me2+), a trivalent metal (Me3+), a quadrivalent metal (Me4+) and a rare earth metal. The magnetic fluid having a viscosity and surface tension that permits dispensing from an inkjet printer at a rate of at least 2.5 m/s, at a resolution of at least 600 dpi, supporting jetting pulse frequencies of at least 15 KHz per nozzle (enabling high speed inkjet printing applications of at least 0.6 m/sec per individual nozzle row per print head), and enabling uninterrupted, industrial level print output of magnetic ink character recognition (MICR) code lines suitable for high speed magnetic data scanning per established industry regulations (ANSI X9).

Abstract: A fluid seal for sealing a gap region for rolling elements rotationally connecting a shaft and an outer structure of a rotating assembly. In embodiments described, the fluid seal includes an inner capillary seal and an outer capillary seal radially and axially spaced from the inner capillary seal. The inner and outer capillary seals are formed along a passageway having an axial portion and a radial portion formed along capillary surfaces of a fluid seal structure and opposed transverse and upright surfaces. In embodiments disclosed, the fluid seal structure includes a seal ring and cap or a seal plate structure. In another embodiment, a flange portion of the shaft forms the fluid seal structure.

Abstract: A method of forming colloidal photonic crystal structures, which diffract light to create color, which includes dispersing solid particles within a magnetic liquid media, and magnetically organizing the solid particles within the magnetic liquid media into colloidal photonic crystal structures.

Abstract: A magnetorheological fluid for use in magnetorheological ultrasmooth polishing of a substrate surface, comprising an aqueous carrier vehicle; a first amount of magnetic particles having a average diameter between about 1 micrometer and about 2 micrometers; and a second amount of abrasive particles having an average diameter between about <1 nanometer and about 15 nanometers. The fluid may further comprise a chemical stabilizer. Preferably the size of the magnetic particles is 2 to 3 orders of magnitude greater than the size of the abrasive particles. Preferably, the magnetic particles are spherical and include carbonyl iron, and preferably, the abrasive particles are selected from the group consisting of aluminum oxide, zirconium oxide, cerium oxide, silica, boron carbide, silicon carbide, natural diamond, synthetic diamond, and combinations thereof.

Abstract: Thermally annealed superparamagnetic core shell nanoparticles of an iron oxide core and a silicon dioxide shell having high magnetic saturation are provided. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.

Abstract: A fluidic actuator includes a chamber filled with a fluid, an element movable in relation to the chamber and in contact with the fluid, as well as a passage for circulating the fluid between the inside and the outside of the chamber in order to vary the amount of fluid in the chamber, thus causing movement of the movable element. The fluid is magnetorheological and the fluidic actuator includes a magnetic field generator arranged so as to generate, in the passage, a controlled magnetic field.

Abstract: An actively controlled colloidal damper having controllable damping characteristics. The damper has a cylinder (2); a piston (4) reciprocatably guided and supported by the cylinder (2) and forming a closed space (3) in cooperation with the cylinder (2); a porous body (8) having a large number of fine holes and received in the closed space (3); operation liquid (7) received in the closed space (3) together with the porous body (8), flowing into the fine holes in the porous body (8) when the pressure in the closed space (3) is increased, and flowing out of the fine holes when the pressure in the closed space (3) is decreased, and pressure regulation means, such as a servo value (6) and a pump device (10), for regulating the pressure in the closed space (3).

Abstract: A magnetorheological fluid comprising a mixture of soft and hard iron particles, an organic based carrier fluid, and optional additives such as anti-friction, anti-wear, or surfactants unexpectedly have improved durability when used in devices for control vibration and/or noise, for example, shock absorbers, elastomeric mounts, dampers, and the like.

Abstract: A nanoparticle composition comprises a ferromagnetic or superparamagnetic metal nanoparticle, and a functionalized carbonaceous coating on a surface of the ferromagnetic or superparamagnetic metal nanoparticle. A magnetorheological fluid comprises the nanoparticle composition.

Abstract: A magneto-rheological fluid includes: a magnetic particle mixture; and a dispersion medium in which the magnetic particle mixture is dispersed. The magnetic particle mixture includes first magnetic particles and second magnetic particles. The first magnetic particles have an average particle size greater than or equal to 1 ?m and less than or equal to 50 ?m. The second magnetic particles have an average particle size greater than or equal to 20 nm and less than or equal to 200 nm, and have surfaces provided with a surface modified layer. A proportion of the second magnetic particles in the magnetic particle mixture is greater than or equal to 2 wt % and less than or equal to 10 wt %.

Abstract: The present disclosure relates to magnetic nanocomposite materials, and processes for the production thereof. In particular, the present disclosure relates to nanocomposites comprising magnetic nanoparticles surrounded by a polymer, which is bonded to a biodegradable polymer.

Abstract: A field-responsive fluid which enters a semi-solid state in the presence of an energy field is improved by use of a plurality of energy field responsive particles which form chains in response to the energy field. The particles can be (a) composite particles in which at least one field-responsive member having a first density is attached to at least one member having a second density that is lower than the first density, (b) shaped particles in which at least one field-responsive member has one or more inclusions, and (c) combinations thereof. The particles improve the field-responsive fluid by reducing density without eliminating field-responsive properties which afford utility. Further, a multi-phase base fluid including a mixture of two or more substances, at least two of which are immiscible, may be used.

Abstract: This invention concerns a device for vibration damping of an object (1) moving along a trajectory arranged on a frame (7), whereas the object (1) involves spaces filled-in with magnetorheologic fluid which moves towards the object (1) and the device contents at least one control electromagnet (2,12) for achieving magnetorheologic fluid condition change to which a signal for vibration damping is fed from a control unit, whereas the control electromagnet/s (2,12) is/are arranged firmly on the frame on which the object's (1) trajectory is positioned. The control electromagnets (2,12) are arranged evenly with regard to the object's (1,5) trajectory (4,14), in case of need evenly to one another.

Abstract: Magnetorheological formulations, processes for preparing the same and uses therefor, the formulations comprising: (a) an ionic liquid comprising anions and cations, and (b) dispersed magnetizable particles having a mean diameter of 0.

Abstract: Magnetorheological (MR) fluids are disclosed herein. An example of the MR fluid includes a carrier fluid, magnetic particles disposed in the carrier fluid, and non-magnetic particles disposed in the carrier fluid. The non-magnetic particles are particles of a shape memory alloy having an Austenite finish temperature (Af) that is lower than a temperature encountered in an application in which the MR fluid is used so that the shape memory alloy exhibits stress-induced superelasticity.

Abstract: There is provided a process for the preparation of a suspension of magnetic particles in a polar carrier liquid. The process includes the step of: coating the surface of the magnetic particles with an organic ligand having a hydrophilic chain prior to the suspension. For preparing a magnetically deformable mirror, the suspension of magnetic particles in a polar carrier liquid is coated with a reflective surface layer. A ferrofluid includes a suspension of magnetic particles coated with an organic ligand having a hydrophilic chain in a polar carrier liquid.

Abstract: The invention relates to a composite material formed by microparticles of magnetic material A and a conductive liquid B. The material is characterized in that the material A is chosen from magnetic compounds and magnetic alloys and is in the form of particles, the mean size of which is between 1 and 10 ?m, and in that the support fluid B is a conductive fluid chosen from metals, metal alloys and salts that are liquid at temperatures below the Curie temperature of the material A, or from mixtures thereof.

Abstract: The invention relates to a composite material formed by millimeter-scale particles of magnetic material A and a conductive liquid B. The material is characterized in that the material A is chosen from magnetic compounds and magnetic alloys and is in the form of particles, the mean size of which is between 0.1 and 2 mm, and in that the support fluid B is a conductive fluid chosen from metals, metal alloys and salts that are liquid at temperatures below the Curie temperature of the material A, or from mixtures thereof.

Abstract: A magnetorheological composition includes a mixture of a carrier medium and a particle component disposed in the carrier medium. The particle component includes a magnetic material and a nonmagnetic material. The nonmagnetic material is present in the particle component in an amount of from about 5 to about 95 parts by volume based on 100 parts by volume of the particle component. The particle component is present in the magnetorheological composition in an amount of from about 20 to about 80 parts by volume based on 100 parts by volume of the magnetorheological composition. The magnetorheological composition has an on-state yield stress at magnetic saturation of from about 0.1 to about 100 kPa.

Abstract: Magnetorheological materials having a supramolecular polymer gel as a component of the carrier are disclosed. Useful supramolecular polymers for gels include those having bipyridine or terpyridine ligands which can participate in metal coordination bonding. The magnetizable particles of magnetorheological materials can have supramolecular surfactant-polymer coatings.

Abstract: This invention is concerned with biocompatible magnetic nanocrystals highly soluble and dispersible in a physiological buffer, powder of biocompatible magnetic nanocrystals and nanocrystals bearing surface reactive N-hydroxysuccinimide ester moiety, and preparations thereof. The magnetic nanocrystals in powder form are highly soluble in a physiological buffer. The resultant aqueous colloidal solution presents long term stability in ambient conditions. Moreover, the carboxyl group on the surface of the magnetic nanocrystals can be converted to N-hydroxysuccinimide ester moiety in an organic solvent. The resultant powder of the magnetic nanocrystals carrying surface N-hydroxysuccinimide ester moiety is soluble and dispersible in an aqueous solution. Different types of biomolecules bearing amino group can covalently be attached to the magnetic nanocrystal simply by mixing them in aqueous solutions.

Abstract: A composite nanoparticle, for example a nanoparticle containing one or a plurality of cores embedded in another material. A composite nanoparticle can be formed by a one step process that includes: ejecting material from a bulk target material using physical energy source, with the bulk target material disposed in a liquid. Composite nanoparticles are formed by cooling at least a portion of the ejected material in the liquid. The composite fine particles may then be collected from the liquid. A product that includes composite fine particles may be formed with laser ablation, and ultrashort laser ablation may be utilized so as to preserve composite nanoparticle stoichiometry. For applications of the composite fine particles, optical properties and/or magnetic properties may be exploited for various applications.

Abstract: Techniques for dyeing material are disclosed, including providing a magnetorheological fluid containing a coloring agent onto a contacting surface, applying a magnetic field to the magnetorheological fluid to increase viscosity of the magnetorheological fluid, and contacting the material with the magnetorheological fluid on the contacting surface to dye the material with the coloring agent.

Abstract: A system is provided for the detection of contaminant particulates in closed containers, that system having a plurality of system components susceptible to degredation during the manufacture of container contents and filling of the closed containers, the system components susceptible to degradation comprising a radio opaque composition of matter; an x-ray source disposed proximate to a path of the closed container in a production line; an x-ray image intensifier whereby x-rays from the x-ray source are collected and an image is generated; a ccd camera whereby the x-ray image is digitized; a contaminated container rejection mechanism whereby closed containers having x-ray images with radio opaque portions are rejected as contaminated and removed from the production line.

Abstract: An electrorheological fluid is provided. The electrorheological fluid includes polarizing particles and a dispersion medium in which the polarizing particles are dispersed. The polarizing particles may include silica particles. The dispersion medium may include silicon oil. The silicon oil may be modified silicon oil including at least one functional group selected from the group consisting of a hydroxyl group (—OH group), an amine group (—NH2 group), a mercapto group (—SH group), and a carboxy group (—COOH group).

Abstract: A magnetorheological fluid comprising magnetic-responsive particles, a thickener, an ionic thixotropic additive, and a carrier fluid wherein the carrier fluid comprises a glycol-water mixture comprising at least 50 percent by weight of a glycol compound. The thickener is preferably fumed silica and the ionic thixotropic additive is preferably one of sodium nitrite, sodium chloride, sodium acetate, and sodium benzoate.

Abstract: This invention is concerned with biocompatible magnetic nanocrystals highly soluble and dispersible in a physiological buffer, powder of biocompatible magnetic nanocrystals and nanocrystals bearing surface reactive N-hydroxysuccinimide ester moiety, and preparations thereof. The magnetic nanocrystals in powder form are highly soluble in a physiological buffer. The resultant aqueous colloidal solution presents long term stability in ambient conditions. Moreover, the carboxyl group on the surface of the magnetic nanocrystals can be converted to N-hydroxysuccinimide ester moiety in an organic solvent. The resultant powder of the magnetic nanocrystals carrying surface N-hydroxysuccinimide ester moiety is soluble and dispersible in an aqueous solution. Different types of biomolecules bearing amino group can covalently be attached to the magnetic nanocrystal simply by mixing them in aqueous solutions.

Abstract: A magnetorheological formulation which comprises at least one base oil, at least one magnetizable particle, a at least one dispersant and a at least one thixotropic agent is described.

Abstract: One embodiment includes a magnetorheological fluid having an on-state yield stress when a magnetic field is applied thereto and comprising a carrier fluid and magnetizable particles suspended in the carrier fluid, and wherein the suspension of the magnetizable particles in the carrier fluid remains essentially homogenous indefinitely in the absence of the magnetic field, and wherein the on-state yield stress of the magnetorheological fluid is greater than or equal to that of poly(alpha)olefin fluid containing the same concentration of magnetizable particles, and wherein the off-state viscosity of the magnetorheological fluid is between about 0.4 and about 12 Pascal-seconds at 40° C.

Abstract: The invention relates to magnetorheological materials comprising at least one non-magnetisable carrier medium and magnetisable particles contained therein, at least two magnetisable particles fractions being contained as particles and these being formed from non-spherical particles and from spherical particles.