Abstract: An assembly includes an enclosure including first and second regions spaced apart along a first direction, and a plurality of spaced apart acoustic baffles arranged along a second direction different from the first direction and disposed in the enclosure between the first and second regions. The plurality of spaced apart acoustic baffles includes adjacent first and second acoustic baffles. Each of the first and second acoustic baffles include an acoustically absorptive layer disposed on a sheet having a specific airflow resistance greater than 200 MKS Rayl. The first and second acoustic baffles define a channel therebetween. At least a portion of the channel extends along a longitudinal direction making an oblique angle with the first direction.

Abstract: Articles comprising a substrate having a first major surface; an electrical conductor pattern on the first major surface of the substrate, the electrical conductor pattern comprising a plurality of separated pairs of separated first and second electrically conductive metallic traces. Optionally the articles further comprise a first electrically conductive layer. Embodiments of articles described herein are useful in, for example, displays, touch sensors, lighting elements, photovoltaic cells, electrochromic windows and displays, and electroluminescent lamps and displays.

Abstract: Provided are conduits for air flow that are capable of reducing noise and related methods. The provided conduits include a first section that is tubular and substantially non-perforated and a second section with at least a portion having a multiplicity of microperforations that provide an average flow resistance of from 50 MKS Rayls to 8000 MKS Rayls therethrough. The second section is either (a) tubular and connected in series with the first section, with an outer surface of the second section being in fluid communication with an outer surface of the conduit, or (b) disposed within the first section.

Abstract: An acoustic absorbing panel adapted for use with computers and servers includes a first layer and an opposing second layer, and a core disposed between the first and second layers, the core including walls extending between the first and second layers and defining a series of cells, each cell being at least partially surrounded by a wall, adjacent cells being interconnected via an opening in the at least one wall. The panel includes a through hole in the first layer or the second layer. The hole may be aligned with a cell in a series of cells. The panel has an absorption band at a frequency between 800 Hz and 12000 Hz. The panel may include a flame resistant polymer composition. The panel may be mounted on the frame of an electronics enclosure. The electronics enclosure may be a server rack or a case of a computer or server.

Abstract: An acoustic-absorbing blanking panel for an electronics rack includes a sheet of acoustic-absorbing material mounted or mountable onto a front panel, the front panel being mountable onto an electronics rack. The blanking panel exhibits an absorption band at a frequency between 800 Hz and 12000 Hz. The sheet of acoustic-absorbing material may be mounted onto a frame, the frame being mountable onto a server rack. The sheet of acoustic-absorbing material may include acoustic-absorbing film, non-woven material, foam, or a panel with a core having a honeycomb structure. An electronics server rack includes a rack with mounting rails, constructed to house electronics components. An acoustic-absorbing blanking panel is mounted on the mounting rails. The blanking panel includes a sheet of acoustic-absorbing material mounted onto a front panel, the front panel being mounted onto the rack. The blanking panel has an absorption band at a frequency between 800 Hz and 12000 Hz.

Abstract: Multilayer damping material for damping a vibrating surface (10) including: at least one constraining layer (4); at least one dissipating layer (1, 3); at least one kinetic spacer layer (2) including multiple spacer elements (2b), the kinetic spacer layer being arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface, wherein each spacer element has opposite ends, at least one end of each of the multiple spacer elements is embedded in, bonded to, in contact with or in close proximity to the dissipating layer, such that energy is dissipated within the multilayer damping material, through movement of the at least one end of each of the multiple spacer elements; absorbing material as at least one additional layer (12) or within at least one of the above layers.

Abstract: Provided are conduits for air flow that are capable of reducing noise and related methods. The provided conduits include a first section that is tubular and substantially non-perforated and a second section with at least a portion having a multiplicity of microperforations that provide an average flow resistance of from 50 MKS Rayls to 8000 MKS Rayls therethrough. The second section is either (a) tubular and connected in series with the first section, with an outer surface of the second section being in fluid communication with an outer surface of the conduit, or (b) disposed within the first section.

Abstract: A continuously electrically conductive electrode including an electrically conductive first mesh repeating across the electrode to form a two-dimensional regular array of the first mesh is described. The first mesh includes a plurality of conductive closed cells, each closed cell including a plurality of vertices connecting a plurality of electrically conductive traces. The electrode may also include an electrically conductive second mesh different from the first mesh and including a plurality of conductive closed cells, each closed cell including a plurality of vertices connecting a plurality of electrically conductive traces. A majority of the closed cells in at least one of the first and second meshes have irregularly arranged vertices.

Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.

Abstract: Panels comprising first and second layers and a core disposed there between, wherein the core has a plurality of walls providing a series of connected cells, wherein some of the cell walls have openings providing fluid communication between a series of at least 3 cells, and wherein the opening in a cell wall has an area that is at least 50 percent of the area of a side of that cell wall. Exemplary embodiments of panels described herein can be formed articles such as panels, walls, or other parts with curved surfaces. In one exemplary method, panels are shaped via thermoforming. In another exemplary method, panels are shaped via insert molding to provide the article. In another exemplary method, panels are shaped via compression molding to provide the article. The panels are useful for absorbing sound in a designed frequency range.

Abstract: Articles comprising a substrate having a first major surface; an electrical conductor pattern on the first major surface of the substrate, the electrical conductor pattern comprising a plurality of separated pairs of separated first and second electrically conductive metallic traces. Optionally the articles further comprise a first electrically conductive layer. Embodiments of articles described herein are useful in, for example, displays, touch sensors, lighting elements, photovoltaic cells, electrochromic windows and displays, and electroluminescent lamps and displays.

Abstract: Articles comprising a substrate having a first major surface; an electrical conductor pattern on the first major surface of the substrate, the electrical conductor pattern comprising a plurality of separated pairs of separated first and second electrically conductive metallic traces. Optionally the articles further comprise a first electrically conductive layer. Embodiments of articles described herein are useful in, for example, displays, touch sensors, lighting elements, photovoltaic cells, electrochromic windows and displays, and electroluminescent lamps and displays.

Abstract: An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous electrode trunk area, and including branching elements which extend outward from the electrode trunk area. The electrically continuous trunk area is patterned coincident an underlying reference mesh pattern, as are the branching elements.

Abstract: A multilayer damping material for damping a vibrating surface comprising: at least one constraining layer; at least one dissipating layer; and at least one kinetic spacer layer comprising multiple spacer elements. The kinetic spacer layer is arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface. Each spacer element has opposite ends. At least one end of each of the multiple spacer elements is embedded in, bonded to, in contact with, or in close proximity to the dissipating layer, such that energy is dissipated within the multilayer damping material, through movement of the at least one end of each of the multiple spacer elements.

Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.

Abstract: A conformable, removable film-based article having a patterned, discontinuous upper protective layer. The upper layer may be configured to facilitate enhanced removability of the film from a substrate, such as an automobile's exterior surface, to which it has been applied.

Abstract: An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous electrode trunk area, and including branching elements which extend outward from the electrode trunk area. The electrically continuous trunk area is patterned coincident an underlying reference mesh pattern, as are the branching elements.

Abstract: An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous electrode trunk area, and including branching elements which extend outward from the electrode trunk area. The electrically continuous trunk area is patterned coincident an underlying reference mesh pattern, as are the branching elements.

Abstract: An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous electrode trunk area, and including branching elements which extend outward from the electrode trunk area. The electrically continuous trunk area is patterned coincident an underlying reference mesh pattern, as are the branching elements.

Abstract: An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous electrode trunk area, and including branching elements which extend outward from the electrode trunk area. The electrically continuous trunk area is patterned coincident an underlying reference mesh pattern, as are the branching elements.