Abstract: A curing device includes a curing platform having at least one curing component arranged on a surface of the curing platform facing a print direction and at least one actuator connecting the curing platform to a dispensing tip. A three dimensional printing system includes a reservoir of curable material, a dispensing tip connected to the reservoir, a curing platform surrounding the dispensing tip, the curing platform having at least one curing component arranged on a surface of the curing platform facing a print direction, and at least one actuator connecting the curing platform to the dispensing tip.

Abstract: Aerosols can be created by filament stretching and breaking of Newtonian and non-Newtonian fluids by applying a strain to and stretching the fluid. The fluid is stretched along a strain pathway and forms a fluid filament. The fluid filament is caused to break into droplets that can be harvested to form a mist or aerosol. Such a system for aerosol creation can include a pair of counter-rotating rollers that are positioned adjacent to each other that stretch the fluid or a pair of pistons that move toward and away from each other to stretch the fluid.

Abstract: An electrostatic charge based additive deposition system that includes a charge transfer roller and a charging device. The charging device configured to selectively charge a portion of the charge transfer roller. A substrate portion is selectively charged based on contact with the selectively charged portion of the charge transfer roller. The selectively charged substrate portion then undergoing an additive deposition process in which electrostatically charged additive material is deposited onto the substrate based on the selective electrostatic charging of the substrate.

Abstract: A bilayer object consisting of a carbon fiber reinforced polymer substrate coated with a composition of matter comprising horizontally aligned exfoliated graphene sheets dispersed in an epoxy binder. A method includes depositing graphene into a hardener, mixing the hardener and the graphene to produce a homogenous 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: An assembly for a high output hydrodynamic separation unit includes, in one form, several components or parts. Top and bottom plates serve as caps for and distribute force through layers of separation channels. The compressive forces seal the channels and prevent leakage from the channels. An optional middle plate may also be provided to create smaller subsets of the layers of separation channels. At least one connector is provided to the combination of components to compress the layers of separation channels. In a variation, an optional outer shell may encase the unit to provide support and compress the stack with a unique threaded configuration.

Abstract: An electrochemical metal alloy identification device employing electrolytes to measure and identify different potentials of alloys is presented. This includes physical structure, disposables, electrical systems, control circuitry, and algorithms to identify alloys.

Abstract: A system and method is provided for creating a structure including a vasculature network. A film deposition device is configured to dispense droplets onto a surface of a substrate to form a curable fugitive pre-patterned liquid film on the surface of the substrate. An electrohydrodynamic film patterning (EHD-FP) device has a patterned electrode structure formed to generate an electric field and to subject the film on the surface of the substrate to the electric field. The film thereby being formed by the EHD-FP into patterned features in response to being subjected to the electric field. Then a casting system is configured to cover the patterned features in an epoxy to form patterned structures, wherein the patterned structures comprise a fugitive vasculature structure.

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 controlled-volume spray deposition system has a fluid feed system including a pair of bi-directional, counter-rotating rollers to dispense fluid as a first surface, the rollers operable to rotate in a first direction to dispense the fluid, a second surface positioned to receive the fluid when the rollers rotate in the first direction, and the rollers operable to rotate in a second direction to retract the fluid to cause the fluid to stretch and form a filament until it breaks to form a spray. A method of generating a controlled-volume spray includes feeding fluid between two counter-rotating rollers as a first surface as they rotate in a first direction until the fluid contacts a second surface, reversing the counter-rotating rollers such that they pull the fluid to form a fluid filament, and causing the filament to break into a spray.

Abstract: A method of atomizing a fluid using a pair of counter-rotating rollers including a first roller having grooves, the grooves enclosed by a pair of fins extending away from the first surface and a second roller having channels, the first and second rollers aligned with each other such that the grooves of the first roller mate with the channels of the second roller forming enclosures and nips. The method includes drawing the fluid from a fluid source through the nips, the nips having an upstream side and a downstream side, stretching the fluid between the diverging surfaces of the pair of counter-rotating rollers on the downstream side of the nips to form fluid filaments, and forming fluid droplets from the stretched fluid filaments on the downstream side of the nips between the diverging surfaces of the pair of counter-rotating rollers.

Abstract: A system and method is provided for creating a structure including a vasculature network. A film deposition device is configured to dispense droplets onto a surface of a substrate to form a curable fugitive pre-patterned liquid film on the surface of the substrate. An electrohydrodynamic film patterning (EHD-FP) device has a patterned electrode structure formed to generate an electric field and to subject the film on the surface of the substrate to the electric field. The film thereby being formed by the EHD-FP into patterned features in response to being subjected to the electric field. Then a casting system is configured to cover the patterned features in an epoxy to form patterned structures, wherein the patterned structures comprise a fugitive vasculature structure.

Abstract: Aerosols can be created by filament stretching and breaking of Newtonian and non-Newtonian fluids by applying a strain to and stretching the fluid. The fluid is stretched along a strain pathway and forms a fluid filament between diverging surfaces. The stretched fluid filament breaks into droplets that can be harvested to form a mist or aerosol. The aerosol creation systems can include one or more pairs of counter-rotating rollers that are positioned adjacent to each other that stretch the fluid or a pair of pistons that move toward and away from each other to stretch the fluid. Some aerosol creation systems can include multiple pairs of counter-rotating rollers that are positioned in a circular, oval, or linear pattern. The aerosol creation system with multiple pairs of counter-rotating rollers can generate mist is one or more directions and can be positioned between two concentric rings or linearly, among other configurations.

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: A method to fabricate hierarchical graded materials includes providing a reservoir of functionalized particles, mixing at least some of the functionalized particles using a mixer in the print head having a mixed fluid volume control on an order of a voxel to produce mixed functionalized particles, and actuating a print head to deposit the mixed functionalized particles on a substrate.

Abstract: Retention devices and methods are provided for drug delivery. The device may include a housing configured for intraluminal deployment into a human or animal subject and at least one reservoir contained within the housing. The at least one reservoir may have an actuation end and a release end and contain at least one drug formulation. A plug may be contained within the at least one reservoir and be moveable from the actuation end toward the release end. The device may also include an actuation system operably connected to the actuation end of the at least one reservoir and configured to drive the at least one drug formulation from the reservoir. The device may also include at least one retention member affixed to the housing and movable between a non-stressed position, a deployment position, and a retention position for retaining the device in an intraluminal location in the subject.

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 atomization device including a pair of counter-rotating rollers, a fluid source configured to coat at least one of the rollers in a feed fluid, and a baffle unit. The counter-rotation of the rollers stretches the feed fluid into a fluid filament between the two diverging surfaces of the rollers. The stretched fluid filaments breaking into a plurality of droplets at a capillary break-up point of the feed fluid. The baffle unit introduces a baffle fluid within the interior of the device, the baffle fluid transporting formed droplets of the feed fluid from the atomization device. Excess or misguides atomized fluid droplets are collected by the baffle unit and are recycled back into the device for use in later atomization processes. The variation of atomization device parameters allows for the selection of droplets having desired physical parameters.

Abstract: The disclosed spray deposition systems and methods control the formation and dispensation of droplets during the atomization of a fluid. Such systems and methods generally can generate small quantities and droplets of a desired size of highly-viscous fluids and/or fluids having non-Newtonian properties or other complex rheologies using mechanical systems and processes with the option of further controlling the droplet size and/or the volume of droplets with various enhancements. The systems and methods stretch fluid between a fluid feed system and a surface and are able to form the controlled-volume of the droplets.

Abstract: A method of atomizing a fluid using a pair of counter-rotating rollers including a first roller having grooves, the grooves enclosed by a pair of fins extending away from the first surface and a second roller having channels, the first and second rollers aligned with each other such that the grooves of the first roller mate with the channels of the second roller forming enclosures and nips. The method includes drawing the fluid from a fluid source through the nips, the nips having an upstream side and a downstream side, stretching the fluid between the diverging surfaces of the pair of counter-rotating rollers on the downstream side of the nips to form fluid filaments, and forming fluid droplets from the stretched fluid filaments on the downstream side of the nips between the diverging surfaces of the pair of counter-rotating rollers.

Abstract: Aerosols can be created by filament stretching and breaking of Newtonian and non-Newtonian fluids by applying a strain to and stretching the fluid. The fluid is stretched along a strain pathway and forms a fluid filament between diverging surfaces. The stretched fluid filament breaks into droplets that can be harvested to form a mist or aerosol. The aerosol creation systems can include one or more pairs of counter-rotating rollers that are positioned adjacent to each other that stretch the fluid or a pair of pistons that move toward and away from each other to stretch the fluid. Some aerosol creation systems can include multiple pairs of counter-rotating rollers that are positioned in a circular, oval, or linear pattern. The aerosol creation system with multiple pairs of counter-rotating rollers can generate mist is one or more directions and can be positioned between two concentric rings or linearly, among other configurations.