Abstract: A hand-held dispenser to dispense fluid includes a casing to fit into a hand of a user, a nozzle in the casing to dispense a mist, a fluid reservoir contained in the casing to hold a fluid to be turned into the mist, a filament extension atomizer contained in the casing to generate the mist, an air source contained in the casing to provide air flow to direct the mist to the nozzle, a motor contained in the casing to operate the filament extension atomizer, an actuator positioned on the casing to activate the dispenser, a control circuit contained in the casing to receive a signal from the actuator and to send a signal to the motor to cause the motor to actuate, and a power source contained in the casing to provide power to the motor upon receive a signal from the control circuit.

Abstract: A method of storing digital data in non-biological sequence-controlled polymers includes converting a digital data file into a monomer sequence, synthesizing polymer chains according to the monomer sequence, and encapsulating the polymer chains into microfluidic droplets and providing the microfluidic droplets with addresses. A polymer data storage system has a first converter to convert digital data to a polymer sequence, a polymer synthesizer to produce polymer chains according to a pre-determined monomer sequence, a fluidic encapsulation system to encapsulate the polymer chains in microfluidic droplets and to apply addressing materials to the microfluidic droplets, a storage for storing the microfluidic droplets, a droplet sorting system having at least an actuator to sort the droplets, a sequencer to derive the polymer sequence from the polymer chains contained in the droplets, and a second converter to convert the polymer sequence to digital data.

Abstract: A deposition system has a reservoir of a material to be deposited, the material having fibers, a print head having a mixer to generate a mixed flow of the materials having fibers, a flow focusing section arranged to cause short fibers to align inside the print head, and an outlet of the print head to allow the material to be deposited on a substrate, and a controller to actuate the print head to control an orientation of the print head relative to a substrate to cause longer fibers to align external to the print head. A deposition system includes a reservoir of a material to be deposited, the material having fibers, a print head connected to the reservoir of material by a conduit, the print head having an exit nozzle and an actuator, the actuator to control the orientation of the exit nozzle relative to a substrate.

Abstract: Devices, systems, and methods for delivering fluid are provided. Devices include a housing configured for intravaginal deployment and retention, at least one reservoir configured to contain a fluid, and a fluid dispensing mechanism configured to dispense the fluid past the cervix and to the uterus of the subject. Methods include intravaginally deploying and retaining a device in the subject, and dispensing the fluid from the device such that the fluid is driven past the cervix to the uterus of the subject.

Abstract: A deposition system has a multi-material print head, a first reservoir of a first compatible material having particles containing chemical elements similar to a first substrate, a second reservoir of a second compatible material having particles containing chemical elements similar to a second substrate, a third reservoir of an polymer precursor material, and at least one mixer. A method of bonding a joint between dissimilar substrate materials includes functionalizing a first compatible material having chemical elements similar to a first substrate, mixing the first compatible material with a polymer precursor material, functionalizing a second compatible material having chemical elements similar to a second substrate, mixing the second compatible material with a polymer precursor material, and using the deposition system to deposit the first and second compatible materials and a polymer precursor material on the joint between the first and second substrate materials.

Abstract: Ink-based digital printing systems useful for ink printing include a photoreceptor layer configured to receive a layer of liquid immersion fluid. The liquid immersion fluid includes dampening fluid, dispersed gas particles, and charge directors that impart charge to the solid particles. The photoreceptor surface is charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged liquid immersion fluid adheres to portions of the photoreceptor surface according to the electrostatic latent image to form a fountain solution image. The fluid portion of the fountain solution image can be partially transferred to an imaging member and/or transfer member to form a dampening fluid image, either or both of which may be electrically biased. The dampening fluid image is inked on the transfer member, and the resulting ink image transferred to a print substrate.

Abstract: An additive manufacturing process includes creating an aerosol from a powder at a spray generator, charging the aerosol to produce a charged aerosol having a first charge, forming a blanket charge on a deposition surface having a second charge with an opposite polarity from the first charge, selectively removing regions of the blanket charge, leaving charged regions on the deposition surface, and transporting the charged aerosol to the charged regions to form structures on the charged regions from the charged aerosol.

Abstract: An aerosol creation system includes a pair of counter-rotating rollers, a nip between the two rollers, the nip having an upstream side and a downstream side, and a pool of fluid on the upstream side of the nip, the fluid being drawn into the nip through the motion of the rollers, such that on the downstream side the fluid stretches between diverging surfaces of the two rollers and forms filaments that breaks up into droplets. A multi-roller aerosol creation system includes more than two rollers arranged to touch each other in a configuration, wherein areas where the rollers touch form nips, each nip having an upstream side and a downstream side, wherein the downstream side of the nips are positioned within a central space within the configuration of the rollers, and fluid surrounding the circular configuration, wherein an outer region of the circular configuration forms the upstream side of the nips.

Abstract: A system to electrohydrodynamically pattern a material includes a first electrode having a first voltage, a second electrode having a second voltage that is different from the first voltage, one or more materials to be patterned residing between the first electrode and the second electrode, a gap between at least one surface of at least one of the materials to be patterned and one of the first or second electrodes, at least one patterning material in the gap, wherein the patterning material is a material other than air, and at least one filling material filling any remainder of the gap.

Abstract: A method of producing functionalized graphene oxide includes mixing graphene oxide with a reactive monomer containing at least one epoxy functional group and a secondary functional group that is selected from vinyl, acrylate, methacrylate, and epoxy to form a mixture, adding an activation agent, heating and stirring the mixture, cooling the mixture, separating the particles from the mixture, and drying the particles to produce functionalized graphene oxide.

Abstract: A composition of matter includes a first compatible material having particles containing chemical elements similar to a first substrate, and second compatible material having particles containing chemical elements similar to a second substrate, wherein the first substrate and the second substrate are chemically different. The particles are dispersed into a matrix that is in between the first and the second substrate. A deposition system has a multi-material printhead, a first reservoir of a first compatible material having particles containing chemical elements similar to a first substrate, a second reservoir of a second compatible material having particles containing chemical elements similar to a second substrate, a third reservoir of an polymer precursor material, and at least one mixer.

Abstract: A method includes depositing graphene into a hardener, mixing the hardener and the graphene to produce a homogeneous composite mixture, adding a resin material to the composite mixture to produce an epoxy graphene material, coating a structure with the epoxy graphene material, aligning the graphene sheets in the in-plane orientation, and curing the epoxy graphene material.

Abstract: Devices, systems, and methods for delivering fluid are provided. Devices include a housing configured for intravaginal deployment and retention, at least one reservoir configured to contain a fluid, and a fluid dispensing mechanism configured to dispense the fluid past the cervix and to the uterus of the subject. Methods include intravaginally deploying and retaining a device in the subject, and dispensing the fluid from the device such that the fluid is driven past the cervix to the uterus of the subject.

Abstract: An additive manufacturing system has an aerosol generator to aerosolize a powder, a deposition surface, a surface charging element to apply a blanket charge to the deposition surface, a charging print head to selectively remove portions of the blanket charge from the deposition surface, and a transport system to transport the aerosol powder from the aerosol generator to the deposition surface, the transport system having an aerosol charging element to apply charge opposite of the blanket charge to the aerosol powder. An additive manufacturing process includes creating an aerosol from a powder at a spray generator, charging the aerosol to produce a charged aerosol having a first charge, forming a blanket charge on a deposition surface having a second charge of an opposite polarity from the first charge, selectively removing regions of the blanket charge, and transporting the charged aerosol to the charged regions to form structures on the charged regions from the charged aerosol.

Abstract: A method includes applying pressure to a liquid feed of nanofiber material at a first nozzle of an array of nozzles having a first electrode voltage applied to a first electrode within an array of nozzles to form a first enlarged meniscus having a nanofiber attached, applying pressure to the liquid feed at a second nozzle having a second electrode voltage applied to a second electrode and adjacent the first nozzle within the array to form a second enlarged meniscus, increasing the second electrode voltage applied to the second electrode to a voltage level equal to voltage applied to the first electrode when the first and second enlarged menisci meet and form a combined meniscus with the nanofiber attached, decreasing the first electrode voltage to zero, and decreasing pressure on the liquid feed at the first nozzle to separate the first enlarged meniscus at the first nozzle from the second enlarged meniscus at the second nozzle having the nanofiber attached.

Abstract: A method of dispensing a graded material includes generating droplets of a first working material, the droplets having a size in the range of 10 nanometers to 10 micrometers, adding the droplets of the first working material into a carrier fluid to create a first emulsion, wherein addition of the droplets of the first working material is controlled to create gradient in the emulsion, mixing the first emulsion to create a homogenous, graded mixture, and dispensing the homogenous, graded mixture onto a surface.

Abstract: A method of creating aerosols includes drawing a fluid from a fluid source through a first nip, the first nip defined between a first roller and an inner surface of a ring, the first nip having an upstream side and a downstream side, drawing the fluid from the fluid source through a second nip, the second nip defined between a second roller and the inner surface of the ring, the second roller positioned adjacent to and spaced apart from the first roller in a circular configuration, the second nip having an upstream side and a downstream side, stretching the fluid between diverging surfaces of the first roller and the inner surface of the ring on the downstream side of the first nip to form a first fluid filament, stretching the fluid between diverging surface of the second roller and the inner surface of the ring on the downstream side of the second nip to form a second fluid filament, causing the first fluid filament to break into a plurality of first droplets, and causing the second fluid filament to break

Abstract: A method of manufacturing a cured polymer resin using functionalized graphene oxide, includes mixing functionalized graphene oxide with a resin precursor and an optional solvent to produce a functionalized graphene solution wherein the particles contain functional groups nearly identical to, or identical to, a polymer precursor material, adding a curing initiator to the resin solution and mixing to produce a resin solution, depositing the formulation into a desired shape, and curing the formulation to form a polymer having functionalized graphene oxide groups in a base polymer material.

Abstract: An electrospinning system for weaving nanofibers may include a digital array of addressable nozzles electrowetted with a liquid nanofiber source material. Each nozzle in the array may include an individually controllable actuator and electrode for modulating the flowrate and charge of the liquid nanofiber source material. Through selectively applying pressure and voltage to individual nozzles, the location of the nanofiber relative to the array may be controlled through digital signals alone, without having to physically move any component of the electrospinning system. By simultaneously controlling the path of multiple nanofibers within the array, new and complex weaving patterns for braids may be achieved with enhanced strength and other properties at a scale previously unattainable.

Abstract: A mixing system has a parallel droplet dispenser capable of making droplets of a first working material in the range of 10 nanometers to 10 micrometers, a pump to deliver fluid for the droplets of the first working material and to produce a first emulsion, a compact mixer having low inter-voxel mixing to receive the emulsion and produce a homogenous material, and a dispensing system. A method of dispensing a graded material includes generating droplets of a first working material, the droplets having a size in the range of 10 nanometers to 10 micrometers, adding the droplets of the first working material into a fluid to create a first emulsion, wherein addition of the droplets of the first working material is controlled to create gradient in the emulsion, mixing the first emulsion to create a homogenous, graded mixture, and dispensing the homogenous, graded mixture onto a surface.