Abstract: Novel high purity dimethylaluminium chloride compositions are provided that are suitable for semiconductor applications, such as atomic layer etch and aluminum ion implantation. The reduction or minimization of specified gaseous impurities allows the vapor phase of the DMAC to have purity levels of 99.9 mol % or higher to selectively etch various atomic layers with high selectivity and high etch precision at acceptable etch rates and 99 mol % or higher to ion implant aluminum ions without substantial implantation of C2H3 ions into a wafer device, thereby avoiding degradation or failure of the wafer device. Storage conditions are established that are conducive to maintaining the high purity levels required for such semiconductor applications.

Abstract: A heating, ventilating, and air conditioning (HVAC) system includes a refrigerant loop having a compressor, where the compressor is configured to circulate a refrigerant through the refrigerant loop, a first heat exchanger disposed along the refrigerant loop, where the first heat exchanger is configured to place the refrigerant in a first heat exchange relationship with a working fluid, and an air handling unit having a second heat exchanger, where the second heat exchanger is configured to place the working fluid in a second heat exchange relationship with an airflow, and where the air handling unit is isolated from the first heat exchanger to reduce or eliminate mixing of refrigerant with the airflow.

Abstract: The present disclosure provides a system with an ultrasonic transducer housing assembly that maintains an acoustic coupling path for spherically focused transducers while allowing the placement of the housing at angles relative to a vertical angle. This invention extends the use of spherically focused transducers into portable systems with significantly reduced system and operational costs for non-destructive testing. The transducer housing assembly features a lens housing with an opening that is sealed with a replaceable fluid-tight membrane defining an acoustic window with acoustic properties similar to those of fluid in the housing and therefore at least translucent to the transducer and causing minimal signal loss. The housing contains minimal fluid to be cleaned up in case of improper use or leakage. The transducer housing also includes an optional surface offset and an ability to adjust the focal point of the transducer relative to the component surface.

Abstract: The present disclosure provides a low-cost and accurate rheometer system and method capable of determining melt flow rheological properties of polymers, such as from Fused Filament Fabrication (“FFF”) polymeric materials. The device can include a filament feeding system, liquefier for filament melting, force transducer for measuring filament feeding force, and a temperature control system for controlling polymer melt temperatures. An electronic control system can capture data and manage operations. The system can measure a filament velocity and filament force required to extrude the FFF filament for printing. The filament velocity and force data can be used to compute data sets of melt volumetric flow relative to pressure drop across a FFF nozzle.

Abstract: The present disclosure provides a system with an ultrasonic transducer housing assembly that maintains an acoustic coupling path for spherically focused transducers while allowing the placement of the housing at angles relative to a vertical angle. This invention extends the use of spherically focused transducers into portable systems with significantly reduced system and operational costs for non-destructive testing. The transducer housing assembly features a lens housing with an opening that is sealed with a replaceable fluid-tight membrane defining an acoustic window with acoustic properties similar to those of fluid in the housing and therefore at least translucent to the transducer and causing minimal signal loss. The housing contains minimal fluid to be cleaned up in case of improper use or leakage. The transducer housing also includes an optional surface offset and an ability to adjust the focal point of the transducer relative to the component surface.

Abstract: The present disclosure provides a low-cost and accurate rheometer system and method capable of determining melt flow rheological properties of polymers, such as from Fused Filament Fabrication (“FFF”) polymeric materials. The device can include a filament feeding system, liquefier for filament melting, force transducer for measuring filament feeding force, and a temperature control system for controlling polymer melt temperatures. An electronic control system can capture data and manage operations. The system can measure a filament velocity and filament force required to extrude the FFF filament for printing. The filament velocity and force data can be used to compute data sets of melt volumetric flow relative to pressure drop across a FFF nozzle.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.

Abstract: A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A clamp-point active circuit is provided. The clamp-point active circuit includes a rate amplifier configured to receive an output from a device transitioning between at least two levels. The clamp-point active circuit has at least one switching device configured to receive an output from the rate amplifier. The at least one switching device is in at least one respective feedback loop of the rate amplifier. A switching of the at least one switching device causes the rate amplifier to amplify with high linearity in a desired operating range and to clamp outputs received from the transitioning device that are outside the desired operating range to a fixed level.

Abstract: A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.

Abstract: Systems and methods for driving an optical modulator are provided. In one embodiment, a modulation drive circuit comprises: a balanced impedance network having a first and a second output generated from a first input, and a third and a fourth output generated from a second input, wherein the first and second outputs are balanced with one another, and the third and fourth outputs are balanced with one another; a first differential amplifier, wherein an inverting input of the first differential amplifier couples to the first output of the distribution network and a non-inverting input of the first differential amplifier couples to the third output of the distribution network; and a second differential amplifier, wherein an inverting input of the second differential amplifier couples to the fourth output of the distribution network and a non-inverting input of the second differential amplifier couples to the second output of the distribution network.

Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

Abstract: A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.

Abstract: A fiber optic gyroscope includes a light source, an optical coupler in optical communication with the light source, with the optical coupler configured to receive an optical signal from the light source, an optical modulator in optical communication with the optical coupler, and a fiber optic coil in optical communication with the optical modulator. A demodulator is configured to receive an optical signal from the optical coupler and convert the optical signal to an electrical signal. A loop closure electronics module is configured to receive the electrical signal from the demodulator. A bias modulator is responsive to an output from the loop closure electronics module and is configured to output a modulation signal to the optical modulator. A first crosstalk filter network is operatively coupled to the demodulator, and a second crosstalk filter network is operatively coupled to the bias modulator.