Abstract: A print head for a three-dimensional printer, which in one embodiment includes a multi-channel enclosure comprising a core channel outlet, a first shell channel outlet, and a first fluidic focusing chamber converging toward a dispensing channel, with the core channel outlet in a central region of the enclosure, and the core and shell channels extending a respective depth into the enclosure. In another embodiment a plurality of shell channels includes an inner shell channel extending a greater length into the focusing chamber than an outer shell channel, and a core channel extends a greater length into the focusing chamber than any shell channel. In another embodiment, each of the core and first shell channels includes at least two inlet sub-channels having distinct fluid reservoirs, input orifices and control valves, which converge to form a single outlet in communication with a respective focusing chamber. A sheath flow channel may be provided.

Abstract: A protective case, sized and shaped to encase a mobile device such as a smartphone or a tablet computer, includes a top section and a bottom section. The top section and bottom section are capable of being engaged to one another in a closed relationship, in which the mobile device may be hermetically sealed or isolated from the outside environment. The top section and bottom section may be readily engaged to or disengaged from one another. Embodiments of the protective case may include membrane that includes a first membrane portion and a second membrane portion, the membrane portions having different qualities.

Abstract: A protective case, sized and shaped to encase a mobile device such as a smartphone or a tablet computer, includes a top section and a bottom section. The top section and bottom section are capable of being engaged to one another in a closed relationship, in which the mobile device may be hermetically sealed or isolated from the outside environment. The top section and bottom section may be readily engaged to or disengaged from one another. Embodiments of the protective case may include membrane that includes a first membrane portion and a second membrane portion, the membrane portions having different qualities.

Abstract: A mobile device case comprises a seal member and a sealing channel to receive the seal member. The sealing channel exerts a force of the seal member perpendicular to a direction of travel of an upper section of the mobile device case. The mobile device case may further comprise a latching system and an accessory rail mounting fixture integrated into a hinge mechanism.

Abstract: A camera lens and a mobile device case for mounting the camera lens are provided. The camera lens may include a dual mount to allow the lens to couple to a variety of receiving mounts on the mobile device case. The dual mount may comprise first and second mounting systems, such as a bayonet mounting system and a screw mount system.

Abstract: A protective case for a mobile device is provided, which includes a backing and a sidewall section, where the sidewall section has four sides and is coupled to the backing such that a cavity is formed when the backing and the sidewall section are attached. The protective case also includes a geometry seal located inside of the cavity, where the geometry seal is configured to form a lower waterproof seal with the sidewall section and the backing. Furthermore, the protective case also includes a top section, which forms an upper waterproof seal with the sidewall section and the geometry seal, thereby allowing the protective case to provide a waterproof seal around the mobile device.

Abstract: There is described a sample holder and associated fluid container assembly for optical analysis of a fluid sample within a translucent container of the fluid container assembly. The sample holder includes clamping members rotatably mounted to a frame for rotation, about parallel axes spaced apart from each other, between a container accepting position in which the clamping members are spaced apart from the translucent container, and an analysis position in the clamping members abut the translucent container. The clamping members each define an optical waveguide slot extending therethrough that is substantially aligned with the translucent container when the clamping members are disposed in the analysis position, to thereby provide optical access to the translucent container for optical analysis of the fluid sample therein.

Abstract: A protective case for a mobile device is provided, which includes a backing and a sidewall section, where the sidewall section has four sides and is coupled to the backing such that a cavity is formed when the backing and the sidewall section are attached. The protective case also includes a geometry seal located inside of the cavity, where the geometry seal is configured to form a lower waterproof seal with the sidewall section and the backing. Furthermore, the protective case also includes a top section, which forms an upper waterproof seal with the sidewall section and the geometry seal, thereby allowing the protective case to provide a waterproof seal around the mobile device.

Abstract: Apparatus for dispensing droplets of reagent onto samples includes a probe tip to which droplets of reagent can adhere. The apparatus advances the probe tip toward a sample until a droplet of reagent touches the sample and is pulled off from the probe tip. A sensor detects that the droplet has been pulled off from the probe tip and halts the advance of the probe tip before the probe tip touches the sample. Such apparatus may be used to automatically dispense small volumes of reagent onto fragile samples.

Abstract: There is described a sample holder and associated fluid container assembly for optical analysis of a fluid sample within a translucent container of the fluid container assembly. The sample holder includes clamping members rotatably mounted to a frame for rotation, about parallel axes spaced apart from each other, between a container accepting position in which the clamping members are spaced apart from the translucent container, and an analysis position in the clamping members abut the translucent container. The clamping members each define an optical waveguide slot extending therethrough that is substantially aligned with the translucent container when the clamping members are disposed in the analysis position, to thereby provide optical access to the translucent container for optical analysis of the fluid sample therein.

Abstract: A sample holder holds various sizes of capillaries or cuvettes for use in dynamic light scattering (DLS) or quasi-elastic light scattering (QELS), such as in DLS of fluid samples such as platelet solutions, whole blood, colloids or the like. The sample holder has a base with a stationary backing member and a sliding, rail-mounted clamping member that is magnetically biased toward the backing member. The sample holder has Peltier-type thermoelectric heating/cooling elements that extend the full height of the clamping and backing members to optimize heat transfer efficiency. The sample holder further includes horizontal slots that enable collection of scattered light from various angles around the device. Finned heat sinks are mounted above and below the horizontal slots on the outwardly facing surfaces of the backing and clamping members to stabilize the temperature of the fluid sample in the sample holder without interfering with incident or scattered light.

Abstract: Apparatus for dispensing droplets of reagent onto samples includes a probe tip to which droplets of reagent can adhere. The apparatus advances the probe tip toward a sample until a droplet of reagent touches the sample and is pulled off from the probe tip. A sensor detects that the droplet has been pulled off from the probe tip and halts the advance of the probe tip before the probe tip touches the sample. Such apparatus may be used to automatically dispense small volumes of reagent onto fragile samples.

Abstract: A sample holder holds various sizes of capillaries or cuvettes for use in dynamic light scattering (DLS) or quasi-elastic light scattering (QELS), such as in DLS of fluid samples such as platelet solutions, whole blood, colloids or the like. The sample holder has a base with a stationary backing member and a sliding, rail-mounted clamping member that is magnetically biased toward the backing member. The sample holder has Peltier-type thermoelectric heating/cooling elements that extend the full height of the clamping and backing members to optimize heat transfer efficiency. The sample holder further includes horizontal slots that enable collection of scattered light from various angles around the device. Finned heat sinks are mounted above and below the horizontal slots on the outwardly facing surfaces of the backing and clamping members to stabilize the temperature of the fluid sample in the sample holder without interfering with incident or scattered light.