Abstract: A fiber draw furnace includes a heated section configured to contain and heat a glass source from which an optical fiber is drawn. A lower extended muffle having a first end and a second end. A gas screen is coupled to the second end of the lower extended muffle configured to allow a gas to flow into the lower extended muffle. A reclaim cylinder is coupled to the lower extended muffle including an outer housing defining a reclaim chamber. A plurality of reclaim ports are tangentially coupled to the outer housing and an inner housing is positioned within the outer housing.

Abstract: Disclosed herein are systems for shaping glass structures, comprising a shaping mold; a magnetic field generator; and a susceptor plate positioned substantially between the shaping mold and the magnetic field generator. Also disclosed herein are systems for shaping a glass structures, comprising a magnetic field generator comprising at least one induction coil and a one power supply connected to the at least one induction coil; and a susceptor plate having a first surface proximate the at least one induction coil and an opposing second surface proximate the glass structure. Further disclosed herein are methods for heating glass structures, comprising positioning the glass structure on a shaping mold; introducing the shaping mold and glass structure into a furnace; and indirectly heating at least a portion of the glass structure using at least one induction heating source.

Abstract: A method of producing an optical fiber is provided that includes the steps of flowing a first gas into an optical fiber draw furnace. The first gas is passed through a heated section configured to contain and heat a glass source from which the optical fiber is drawn, passing the first gas through a muffle which defines a capture chamber. A portion of the first gas is removed through at least one reclaim port operatively coupled to the capture chamber. A second gas flows into a gas screen at a rate configured to substantially recover a pressure drop associated with removing the portion of the first gas.

Abstract: A tangential flow filtration assembly is provided herein. The tangential flow filtration assembly includes a first and second winding tangential flow channel having an inlet at an endpoint the respective tangential flow channel and an outlet at an opposite endpoint of the respective tangential flow channel, the tangential flow channels further having a first cross-sectional area at the inlet and a second cross-sectional area at the outlet. The tangential flow filtration assembly further includes a filtration membrane positioned between the first and second tangential flow channels. The first cross-sectional area of the first tangential flow channel is greater than the second cross-sectional area of the first tangential flow channel, and the first cross-sectional area of the second tangential flow channel is less than the second cross-sectional area of the second tangential flow channel.

Abstract: A method of producing an optical fiber is provided that includes the steps of flowing a first gas into an optical fiber draw furnace. The first gas is passed through a heated section configured to contain and heat a glass source from which the optical fiber is drawn, passing the first gas through a muffle which defines a capture chamber. A portion of the first gas is removed through at least one reclaim port operatively coupled to the capture chamber. A second gas flows into a gas screen at a rate configured to substantially recover a pressure drop associated with removing the portion of the first gas.

Abstract: A system and method of thermally tempering a glass laminate including a core layer and cladding layers fused to opposing sides of the core layer, the method including: preheating the glass laminate to a temperature between the annealing point and the softening point of the core layer; and selectively heating the glass laminate using microwave radiation, while actively cooling the glass laminate, such that a temperature differential of at least about 30° C. is generated between the core and cladding layers.

Abstract: The present disclosure generally relates to the bioprocess field and, in particular, to a perfusion bioreactor and a method for using the perfusion bioreactor for performing a continuous cell culture.

Abstract: A glass sheet is formed on a mold into a glass article having a three-dimensional shape. The mold, with the glass article thereon, is arranged within an interior space of a radiation shield such that the mold is between a leading end barrier and a trailing end barrier of the radiation shield. The mold, glass article, and radiation shield are translated through a sequence of cooling stations while maintaining the mold between the leading and trailing end barriers, wherein the leading and trailing end barriers inhibit radiation heat transfer at leading and trailing ends of the mold.

Abstract: An optical fiber production system is provided which includes a slow-cooling device and a purge device positioned above the slow-cooling device. The purge device includes a tube defining an inlet. An optical fiber extends through the slow-cooling device and the purge device. The purge device is configured to inject a purge gas through the inlet and against the optical fiber.

Abstract: Disclosed herein are systems for shaping glass structures, comprising a shaping mold; a magnetic field generator; and a susceptor plate positioned substantially between the shaping mold and the magnetic field generator. Also disclosed herein are systems for shaping a glass structures, comprising a magnetic field generator comprising at least one induction coil and a one power supply connected to the at least one induction coil; and a susceptor plate having a first surface proximate the at least one induction coil and an opposing second surface proximate the glass structure. Further disclosed herein are methods for heating glass structures, comprising positioning the glass structure on a shaping mold; introducing the shaping mold and glass structure into a furnace; and indirectly heating at least a portion of the glass structure using at least one induction heating source.

Abstract: A method of producing an optical fiber is provided that includes the steps of flowing a first gas into an optical fiber draw furnace. The first gas is passed through a heated section configured to contain and heat a glass source from which the optical fiber is drawn, passing the first gas through a muffle which defines a capture chamber. A portion of the first gas is removed through at least one reclaim port operatively coupled to the capture chamber. A second gas flows into a gas screen at a rate configured to substantially recover a pressure drop associated with removing the portion of the first gas.

Abstract: Disclosed herein are systems for shaping a glass structure comprising a shaping mold; a radiation heating source; and a radiation shield, wherein the radiation shield is positioned substantially between the radiation source and the glass structure and wherein the radiation shield comprises an outer wall defining a cavity having a first opening disposed to face the glass structure and a second opening disposed to face the radiation heating source. Also disclosed herein are methods for shaping a glass structure comprising positioning the glass structure on a shaping mold; introducing the shaping mold and glass structure into a furnace comprising a radiation heating source; and heating the glass structure, wherein a radiation shield is positioned substantially between the glass structure and the radiation heating source. Methods and systems employing multiple, e.g., concentric, radiation shields are also disclosed.

Abstract: A 5-liter bioreactor vessel enables a substantial increase in the volume of biological media that can be cultivated in the vessel compared to conventional designs. Moreover, when agitated at 1.5× the shaking frequency of a conventional 3-liter bioreactor (i.e., 90 rpm versus 60 rpm), the 5-liter vessel achieves a 19% increase in cell aeration without exceeding the maximum shear stress limit for cell viability. The 5-liter vessel optionally includes a plurality of internal baffles configured to disrupt the liquid vortex and reduce the maximum shear stress transferred to biomedia contained within the vessel.

Abstract: A glass sheet is formed on a mold into a glass article having a three-dimensional shape. The mold, with the glass article thereon, is arranged within an interior space of a radiation shield such that the mold is between a leading end barrier and a trailing end barrier of the radiation shield. The mold, glass article, and radiation shield are translated through a sequence of cooling stations while maintaining the mold between the leading and trailing end barriers, wherein the leading and trailing end barriers inhibit radiation heat transfer at leading and trailing ends of the mold.

Abstract: A glass sheet is formed on a mold into a glass article having a three-dimensional shape. The mold, with the glass article thereon, is arranged within an interior space of a radiation shield such that the mold is between a leading end barrier and a trailing end barrier of the radiation shield. The mold, glass article, and radiation shield are translated through a sequence of cooling stations while maintaining the mold between the leading and trailing end barriers, wherein the leading and trailing end barriers inhibit radiation heat transfer at leading and trailing ends of the mold.

Abstract: A glass sheet is formed on a mold into a glass article having a three-dimensional shape. The mold, with the glass article thereon, is arranged within an interior space of a radiation shield such that the mold is between a leading end barrier and a trailing end barrier of the radiation shield. The mold, glass article, and radiation shield are translated through a sequence of cooling stations while maintaining the mold between the leading and trailing end barriers, wherein the leading and trailing end barriers inhibit radiation heat transfer at leading and trailing ends of the mold.