Corning Incorporated

Scott Michael Jarvis

Daniel Robert Boughton

Zhiqiang Shi

Jonghak Kim

Xinghua Li

Robert Stephen Wagner

Michael Thomas Gallagher

Christopher William Drewnowski

Nicholas Ryan Wheeler

Moussa N'Gom

A method of printing a 3D object includes feeding one or more preformed materials from a feed outlet into a build zone in which a hot spot is located and using the hot spot to selectively heat the one or more preformed materials to a viscous state. Object layers are formed by depositing portions of the preformed materials on a build surface, or on another object layer on the build surface, while effecting relative motion between the build surface and the feed outlet.

Method and system for printing 3D objects

Disclosed herein are methods and apparatuses for adding thermal energy to a glass melt. Apparatuses for generating a thermal plasma disclosed herein comprise an electrode, a grounded electrode, a dielectric plasma confinement vessel extending between the two electrodes, and a magnetic field generator extending around the dielectric plasma confinement vessel. Also disclosed herein are methods for fining molten glass comprising generating a thermal plasma using the apparatuses disclosed herein and contacting the molten glass with the thermal plasma. Glass structures produced according to these methods are also disclosed herein.

Method and apparatus for adding thermal energy to a glass melt

An ultrasonic transducer assembly includes an ultrasonic transducer, an ultrasonic booster, an ultrasonic probe, and a booster cooling unit. The ultrasonic booster is connected to the ultrasonic transducer to amplify acoustic energy generated by the ultrasonic transducer and transfer the amplified acoustic energy to the ultrasonic probe. A seated end of the ultrasonic probe is positioned in a probe seat of the ultrasonic booster. The booster cooling unit is positioned to regulate the temperature of the probe seat of the ultrasonic booster such that the assembly supports a temperature dependent press-fit engagement of the seated end of the ultrasonic probe and the probe seat of the ultrasonic booster. The temperature dependent press-fit engagement is such that the seated end of the ultrasonic probe can be reversibly moved in and out of the probe seat at an elevated temperature Tand is fixed in the probe seat at room temperature T.

Ultrasonic transducer assembly for applying ultrasonic acoustic energy to a glass melt

A method of applying ultrasonic acoustic energy to a glass melt by monitoring a glass melt temperature Tand transferring ultrasonic acoustic energy from an ultrasonic transducer to the glass melt at a controller power Pand a controller frequency vthrough an ultrasonic probe positioned in the glass melt is provided. According to the method, the controller power Pis controlled in response to at least (i) the monitored glass melt temperature Tand (ii) a reference glass melt temperature T. The controller frequency vis controlled in response to at least (i) one or more input parameters from a temperature-viscosity curve characterizing the glass melt, (ii) one or more input parameters from one or more temperature dependent impedance response models of the glass melt, and (iii) &#x394;Z, where &#x394;Z represents a degree to which an impedance condition Zof the ultrasonic probe differs from a reference impedance Zwhen the ultrasonic probe is positioned in the glass melt. Systems for applying ultrasonic acoustic energy to glass melts are also contemplated.

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Ithaca, NY, United States of America

Scott Michael Jarvis