Abstract: Apparatus and methods of separating a glass ribbon are provided. In one embodiment, an apparatus for severing glass ribbon includes a plurality of manufacturing components arranged into a travel path, a glass cutting device, and a severing zone positioned in a downstream direction from the glass cutting device, where the severing zone comprising a targeted separation region along the travel path. The apparatus also includes an acoustic transmitter positioned in a first direction from the targeted separation region, an acoustic receiver positioned in a second direction from the targeted separation region opposite the first direction, and a manufacturing component positioned along the travel path in the downstream direction from the targeted separation region.

Abstract: 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 THOT and is fixed in the probe seat at room temperature TCOLD.

Abstract: A glass panel is provided having a glass structure with an exterior surface and an interior surface, the glass structure having at least one glass sheet with a thickness ranging from about 0.5 mm to about 2.0 mm and a backing frame positioned adjacent the glass structure and situated along the perimeter of the interior surface of the glass structure. The glass panel further includes a polymer layer positioned on the interior surface and intermediate the glass structure and backing frame to adhere the glass structure together with the backing frame an array of acoustic exciters positioned on the glass structure, the array of acoustic exciters providing excitation energy to or receiving excitation energy from the glass structure where frequency response of the panel can be a function of the geometry of the glass structure and the position of the acoustic exciters.

Abstract: Touch systems and methods that employ acoustic sensing in a thin glass sheet are disclosed. The touch system includes a generally planar acoustic-sensing assembly that includes the thin glass sheet. Thin-film piezoelectric acoustic transducers are arranged on the top surface or the bottom surface and adjacent the perimeter and serve as either transmitters or receivers. A signal-processing algorithm run on a controller is used to process the receiver signals to determine at least one characteristic of a touch event. Use of a thin glass sheet allows for the acoustic transducers to operate at a frequency f in the range from 0.5 MHz to 5 MHz, thereby providing for excellent pressure sensitivity and spatial resolution of touch events.

Abstract: A method of forming a cladding portion of an optical fiber preform assembly includes positioning a glass core cane in a mold cavity and loading the mold cavity with silica glass soot. The silica glass soot is compressed in an axial direction as the vibratory energy is applied to the mold body to form a soot compact around the glass core cane, wherein the soot compact is the cladding portion of an optical fiber preform assembly and the glass core cane is a core portion of the optical fiber preform assembly.

Abstract: A mesoporous, transition metal oxide material having an average pore diameter ranging from 2 to 20 nm, a basic surface character defined by an isoelectric point>pH 7, and a specific surface area greater than 50 m2/g can be incorporated into a NOx sensing device as a NOx film. The mesoporous, transition metal oxide material includes an oxide of yttrium, lanthanum and/or cerium, and can be formed using a surfactant-templated self-assembly process.

Abstract: Both a method and apparatus for determining internal discontinuities or inhomogeneities in a green or fired ceramic honeycomb structure is provided. In the method of the invention, an ultrasonic transmitter is positioned adjacent to, but not in contact with, the honeycomb structure. The transmitter propagates an ultrasonic wave, of preferably less than 5 MHz, through the honeycomb structure which is received, filtered and analyzed to determine the presence or absence of internal discontinuities or inhomogenieties. The ultrasonic transmitter generates an ultrasonic wave of less than five megahertz to provide a relatively high signal-to-noise ratio in the ultrasonic wave propagated through the structure.

Abstract: A method of applying ultrasonic acoustic energy to a glass melt by monitoring a glass melt temperature TY and transferring ultrasonic acoustic energy from an ultrasonic transducer to the glass melt at a controller power PC and a controller frequency vC through an ultrasonic probe positioned in the glass melt is provided. According to the method, the controller power PC is controlled in response to at least (i) the monitored glass melt temperature TY and (ii) a reference glass melt temperature TR. The controller frequency vC is 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) ?Z, where ?Z represents a degree to which an impedance condition ZY of the ultrasonic probe differs from a reference impedance ZR when the ultrasonic probe is positioned in the glass melt.

Abstract: Laser-based ultrasonic (LBU) systems and methods for measuring at least one material property of a ceramic cellular ceramic body during thermal processing are disclosed. The method includes subjecting the ceramic cellular ceramic body to a temperature cycle within an interior of an oven. For a plurality of temperatures within the temperature cycle, the cellular ceramic body is irradiated with a modulated laser beam to generate acoustic waves in the cellular ceramic body over a plurality of acoustic paths. The method also includes sequentially irradiating the cellular ceramic body using a detection laser beam so that the acoustic waves are detected. The method also includes calculating from the detected acoustic waves at least one material property of the ceramic cellular body as a function of temperature.

Abstract: An ultrasonic transducer assembly is provided comprising 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 THOT and is fixed in the probe seat at room temperature TCOLD.

Abstract: A method of applying ultrasonic acoustic energy to a glass melt by monitoring a glass melt temperature TY and transferring ultrasonic acoustic energy from an ultrasonic transducer to the glass melt at a controller power PC and a controller frequency vC through an ultrasonic probe positioned in the glass melt is provided. According to the method, the controller power PC is controlled in response to at least (i) the monitored glass melt temperature TY and (ii) a reference glass melt temperature TR. The controller frequency vC is 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) ?Z, where ?Z represents a degree to which an impedance condition ZY of the ultrasonic probe differs from a reference impedance ZR when the ultrasonic probe is positioned in the glass melt.

Abstract: A glass laminate includes at least one chemically-strengthened glass sheet and a polymer interlayer formed over a surface of the sheet. The chemically-strengthened glass sheet has a thickness of less than 2.0 mm, and a near-surface region under a compressive stress. The near surface region extends from a surface of the glass sheet to a depth of layer (in micrometers) of at least 65-0.06(CS), where CS is the compressive stress at the surface of the chemically-strengthened glass sheet and CS>300 MPa.

Abstract: Disclosed is a method for producing a silver-containing nanostructure which can reduce the time required for a post treatment step and the amount of a waste material and which is achieved by the application of the reduction reaction of silver oxide; and a silver-containing nanostructure having a specific structure, which can be produced by the method. Specifically disclosed is a method for producing a silver-containing nanostructure, including dispersing a polymeric compound in which a hydrophilic segment is bonded to a polyalkyleneimine chain in a medium, adding silver oxide thereto, and carrying out a reduction reaction of the silver oxide, thereby obtaining a silver-containing nanostructure. In the method, a structure having a branched structure can be produced when a specific compound is used as a complexing agent. The silver-containing nanostructure thus produced can be used as a conductive paste or the like.

Abstract: Systems (50) and methods for measuring and displaying a visual and/or graphical representation of the specific modulus (E/?) of a cellular ceramic body (10), such as those used to form particulate filters, are disclosed. The ultrasonic measurement system employs an ultrasonic transmitter (52T) and an ultrasonic receiver (52R) adjacent to, but spaced apart from respective ends (16, 18) of the ceramic body. Multiple ultrasonic waves (80) are sent through corresponding multiple longitudinal portions (12P) of the honeycomb structure (12), where adjacent longitudinal portions overlap. Time of flight (TOF) measurements (TOF1, TOF2), along with other parameters describing the ceramic body, allow for the measurement of the sonic speed (cmat) of the ultrasonic waves that pass through the ceramic body as well as the attenuation (IR). The specific modulus is then calculated from the square of the sonic speed (C2mat).

Abstract: A computer network system with congestion control includes an edge router, a core router, and an inter-domain router in a computer network domain. A token level is inserted into the packet header of a data packet for congestion control in the computer network domain.

Abstract: Laser-based ultrasonic (LBU) systems and methods for measuring at least one material property of a ceramic cellular ceramic body during thermal processing are disclosed. The method includes subjecting the ceramic cellular ceramic body to a temperature cycle within an interior of an oven having first and second windows. For a plurality of temperatures within the temperature cycle, the cellular ceramic body is irradiated with a modulated laser beam through the first window. This modulated irradiation is sequential at one or more first locations and generates acoustic waves in the cellular ceramic body over a plurality of acoustic paths. The method also includes sequentially irradiating the cellular ceramic body through the second window using a detection laser beam. This probe irradiation is sequential at one or more second locations that correspond to the one or more first locations so that the acoustic waves associated with the plurality of optical paths are detected.

Abstract: A mesoporous, transition metal oxide material having an average pore diameter ranging from 2 to 20 nm, a basic surface character defined by an isoelectric point>pH 7, and a specific surface area greater than 50 m2/g can be incorporated into a NOx sensing device as a NOx film. The mesoporous, transition metal oxide material includes an oxide of yttrium, lanthanum and/or cerium, and can be formed using a surfactant-templated self-assembly process.

Abstract: Disclosed is a method for producing a silver-containing nanostructure which can reduce the time required for a post treatment step and the amount of a waste material and which is achieved by the application of the reduction reaction of silver oxide; and a silver-containing nanostructure having a specific structure, which can be produced by the method. Specifically disclosed is a method for producing a silver-containing nanostructure, including dispersing a polymeric compound in which a hydrophilic segment is bonded to a polyalkyleneimine chain in a medium, adding silver oxide thereto, and carrying out a reduction reaction of the silver oxide, thereby obtaining a silver-containing nanostructure. In the method, a structure having a branched structure can be produced when a specific compound is used as a complexing agent. The silver-containing nanostructure thus produced can be used as a conductive paste or the like.