44 results about "Anisotropic particles" patented technology

The present invention includes compositions and methods for treating and delivering medicinal formulations using an inhaler. The composition includes a space filled flocculated suspension having one or more flocculated particles of one or more active agents and a hydrofluoroalkane propellant. A portion of the one or more flocculated particles is templated by the formation of hydrofluoroalkane droplets upon atomization and the templated floc compacts upon the evaporation of the hydrofluoroalkane propellant to form a porous particle for deep lung delivery.

The present invention relates to a high contrast reflective display comprising a substrate, at least one electronically modulated imaging layer, wherein the electronically modulated imaging layer comprises a uniformly thick, close-packed, ordered monolayer of domains of electrically modulated material in a fixed polymer matrix, at least one barrier layer, wherein the barrier layer is conductive in a direction perpendicular to the substrate, and at least one electrically conductive layer. The invention also relates to a method of making the display with a barrier layer comprising anisotropic particles and orienting the anisotropic conductor to produce a barrier layer conductive in a direction perpendicular to the substrate.

Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics

The invention relates to a preparing method for synthesizing shape-controlled anisotropic particle through emulsion polymerization based on asymmetry monomer-swelling non-crosslinking seed particles. Non-crosslinking monodisperse polymer particles are used as a seed particle, protruded asymmetry monomer-swelling particle with liquid attached to the surface are obtained through an improved dual swelling polymerizing technique, and the shape-controlled anisotropic particles can be obtained through emulsion polymerization based on the asymmetry monomer-swelling particles. The prepared anisotropic particles have wide application value in the fields of light reflection, self assembling, catalyst carrier immobilization and biological macromolecule immobilization. Furthermore, the preparing method has an improving effect on both theory and technique of seed polymerization.

A localized surface plasmon resonance (LSPR) sensing system with anisotropic particles is revealed. The anisotropy of nanoparticles spectrally splits the phase spectra of two perpendicular polarizations thus inducing a phase difference between the two polarizations. An apparatus of ellipsometry is used to measure the phase difference. The simulated results demonstrate that the full width at the half maximum of the spectrum of phase difference is much narrower than the spectrum of transmittance. Therefore the figure of merit is dramatically increased and the performance of the refractive index sensor is improved.

Polymeric or polymerizable material with oriented magnetic anisotropic particles is subjected to magnetic fields that reorient the magnetic particles. The result is an aesthetic patterned appearance.

The present invention relates to a method for preparing oriented anisotropic particles comprising the steps of providing at least one anisotropic particle, dispersing the one anisotropic particle(s) in a medium, and freeze drying the dispersion of anisotropic particle(s) and the medium. In another embodiment, the present invention relates to an oriented anisotropic material comprising at least one anisotropic particle dispersed in a medium and thereafter freeze dried. Another embodiment relates to an article comprising an oriented anisotropic material and at least one matrix, wherein the oriented anisotropic material comprises a freeze dried anisotropic material.

To Provide a polarizing glass with better weatherability than conventional polarizing glasses, affording high long-term reliability without the above-described surface deterioration. To provide an optical isolator employing polarizing glass of improved weatherability, affording good weatherability and high reliability for extended periods.[Means for Solving] A polarizing glass comprising geometrically anisotropic particles dispersed in an oriented manner in at least one surface layer of a glass base body. The glass base body does not comprise an oxide of alkali earth metal and PbO, and consists of borosilicate glass comprising at least one additive component selected from the group consisting of Y2O3, ZrO2, La2O3, CeO2, Ce2O3, TiO2, V2O5, Ta2O5, WO3, and Nb2O5, and the geometrically anisotropic metal particles are metallic cupper particles. An optical isolator employing the polarizing glass.

The invention relates to a controllable drop coalescence prepared anisotropic particle material and a microfluid device. The particle material provided by the invention is prepared by the following steps: preparing liquid drop of a polymer monomer by the use of fluid shear force of a continuous phase in a liquid drop generation module; simultaneously preparing various desired liquid drops by the use of a plurality of liquid drop generation modules; allowing the liquid drops to simultaneously or successively enter into a hydraulic trap of a liquid drop operation module according to the requirement of the liquid drops and according to the position and direction of coalescence controlling for coalescence and photo polymerization, so as to prepare the anisotropy functional particle material. The liquid drop generation modules are connected with the liquid drop operation module through conduits; the liquid drop generation modules are formed by commonly-used microfluidic liquid drop generation chips; the liquid drop operation module is composed of a four-arm, six-arm or eight-arm hydraulic trap, and the dimension of micro channels in each module varies from several micrometers to hundreds of micrometers; coalescence between liquid drops and curing operation are carried out. The device provided by the invention is used to realize the preparation of the anisotropic particle material which has a plurality of forms and can be prepared only by the combination of many present prior arts.

The present invention provides an optical modulator that prevents aggregation of shape-anisotropic particles. The optical modulator of the present invention includes: (1) a first substrate and a second substrate that are disposed to face each other; (2) an optical modulation layer disposed between the first substrate and the second substrate; and (3) a vertical alignment film. The optical modulation layer (2) contains: (2A) liquid crystal molecules that have a positive anisotropy of dielectric constant with a value of the anisotropy Δϵ of 10 or more; and (2B) shape-anisotropic particles each including a core material and a coating layer that is formed of a material containing a fluorine atom and constitutes an outer surface of the shape-anisotropic particles. The first substrate includes a pair of electrodes. The liquid crystal molecules and the shape-anisotropic particles are aligned perpendicular to the first substrate with no voltage applied to the electrodes and are tilted parallel to the first substrate by a transverse electric field generated by application of voltage to the electrodes. The liquid crystal molecules have a surface energy in the range of 27 to 35 mN / m. The vertical alignment film has a surface energy in the range of 30 to 40 mN / m.

Polymeric or polymerizable material with oriented decorative anisotropic particles is subjected to deformation and magnetic fields that reorient the decorative particles. The result is an aesthetic patterned appearance.

The optical device (100) includes a first substrate (10), a second substrate (20), and an optical layer (30). The first substrate includes a first electrode (11) and a second electrode (12) configured to be provided with mutually different electrical potentials within a pixel. The optical layer may include a medium (31) and a plurality of shape-anisotropic particles (32) dispersed in the medium. At least one of the first electrode and the second electrode may include a plurality of comb teeth portions (11a, 12a) arranged at predetermined intervals along the first direction (D1). When an electric potential difference is applied between the first electrode and the second electrode, the pixel may be configured to have an electrical field distribution in which a strong electric field region having a stronger field intensity than another region is periodically formed parallel to the surface of the optical layer along a second direction (D2) orthogonal to the first direction.

The invention discloses a calculation method for heterogeneous anisotropic hardened particle peripheral interface volume fractions. The calculation method comprises the following steps that 1, the sizes of heterogeneous anisotropic particles are defined, and particle size distribution of the multi-particle-diameter heterogeneous anisotropic particles is calculated; 2, volume fractions of a base body are calculated; 3, the average volume and the average surface area of the heterogeneous anisotropic particles are calculated; 4, the number density of the heterogeneous anisotropic particles is calculated; 5, the heterogeneous anisotropic hardened particle peripheral interface volume fractions are calculated. The calculation method shakes off the restraint of the original research technology which can only be used for the simplest spherical particles, and the calculation method for interface volume fractions has higher universality and representativeness.

The invention relates to a preparation method of anisotropic particles with variable morphology. The method comprises the following steps: firstly utilizing silanol hydrophilic groups produced by hydrolysis of a silane coupling agent to prepare a series of seeds with different hydrophilicities, then enabling the seeds to be swollen by monomers incompatible to the hydrophilic groups, and controlling the phase separation degree according to different phase separation degrees of polymers, which are induced by different interfacial tensions and incompatible to the hydrophilic groups so as to obtain the composite particles with the variable morphology. The composite particles contain organic-inorganic-organic phase non-spherical composite particles, which have an important significance for developing novel multi-component materials. The composite particles prepared by the preparation method disclosed by the invention are amphipathic, and can be used as compatibilizers, emulsifiers and the like for modifying mixtures of the incompatible polymers. The synthesis process is simple and easy to operate, clean, environment-friendly and easy to realize large-scale production; furthermore, the preparation method has universality and is suitable for other polymer systems which are mutually incompatible.

Polymeric or polymerizable material with oriented decorative anisotropic particles is subjected to deformation that reorients the decorative particles. The result is an aesthetic patterned appearance.

A method of producing a topical scrub includes providing a particle material suitable for producing a customized anisotropic particle; producing a plurality of customized anisotropic particles composed of the particle material, each customized anisotropic particle having a particle shape, a particle volume, and a particle composition; and dispersing the plurality of customized anisotropic particles in a fluid material to form a dispersion of customized anisotropic particles in the fluid material. At least a feature of the particle shape facilitates embedding at least a portion of the plurality of customized anisotropic particles into a topical surface by a scrubbing action.

The invention provides a simple and cost-effective method for preparing particles such as anisotropic semiconductor nanoparticles (e.g. CdS) and devices thereof. The method comprises (i) dispersing at least part of particle-forming reactants in a self-organized medium such as surfactant-aqueous solution system, and (ii) conducting a particle-forming reaction using the particle-forming reactants dispersed in the self-organized medium under shear condition to form the particles. The anisotropic property of the particles is controlled at least partially by the shear condition. The invention may be used to prepare quantum dots in a liquid crystal, and various devices such as nonlinear optics, optoelectronic devices, and solar cells, among others.

A method for fabricating anisotropic polymer particles comprises steps: providing a first substrate; arranging a plurality of polymer spheres on the first substrate; providing a second substrate to cover the polymer spheres; heating at least one of the first substrate, the second substrate, and the polymer spheres; and applying force to the first substrate and the second substrate to squeeze the polymer spheres into a plurality of anisotropic polymer particles. The present invention uses simple compressing and heating processes to fabricate many types of anisotropic polymer structures and thus saves the cost and time of fabrication.

The invention relates to an anisotropic particle preparation method based on change of hydrophilicities of non-crosslinked seeds. The method comprises the steps: firstly a series of polymer seeds having different surface hydrophilicities are prepared and then are swollen with monomers incompatible with the polymer seeds; according to different phase separation degrees of polymers which are induced by different interfacial tensions and incompatible with the seeds, the degree of phase separation is controlled, composite particles with controllable morphologies are obtained, and thus a series of anisotropic composite particles having different micro morphologies are successfully synthesized. The method adopts the soap-free emulsion polymerization, takes water as a reaction medium, is different from a conventional method adopting highly crosslinked seeds and various organic solvents as a dispersion phase, can prepare the non-crosslinked composite particles, and is conducive to separation and further processing. The synthesis process is simple and feasible, is clean and environmentally friendly, is easy for large-scale production, moreover, has universality, and is applicable to other polymer systems incompatible with each other.

A catalyst support material useful in a membrane electrode assembly is presented. The support catalyst material is elongate electrically anisotropic particles of flexible graphite, and the membrane electrode assembly includes a pair of electrodes, an ion exchange membrane having opposed surfaces positioned between the electrodes and a catalyst material on the inventive support, at least a portion of an opposed surface of the ion exchange membrane being adjacent the catalyst which is supported on the elongate electrically anisotropic particles of flexible graphite sheet.

A process for producing a ceramic sinter or inorganic film in which anisotropic particles or anisotropic crystals have been oriented; or a process for producing a bonded composite material which comprises a base sample and another material tenaciously bonded to a surface of the base. The processes are characterized by imposing a centrifugal force during buming (heating).

The disclosure provides a permanent magnet and a method of making a permanent magnet. A method includes mixing first and second alloys to form a mixture, pressing the mixture within a first magnetic field to form a magnet having anisotropic particles of the first alloy aligned with a magnetic moment of the magnet, and heat treating the magnet within a second magnetic field to form elongated grainsfrom the second alloy and align the elongated grains with the moment.