Abstract: A fluid mover includes a chamber with one or more outlet openings, first and/or second fluidic diaphragm(s) having a portion movable in the chamber to cause fluid to move at the outlet opening, and a coil assembly magnetically coupled to the fluidic diaphragm to move the movable portion of the fluidic diaphragm(s) in response to a current in the coil. The coil assembly includes a coil with an opening, and a plug may be positioned in the opening and/or a support may be positioned around a periphery of the coil. The plug and/or the support may have a magnetic permeability greater than one and be arranged so magnetic field lines created by the coil pass through the plug and/or support. The coil, plug and/or support may define a flat surface, e.g., such that a uniform gap is present between the diaphragm(s) and the coil, plug and/or support.

Abstract: A cantilever fan including a cantilever blade that is clamped at one end. The fan includes an actuator that applies a periodic force to the blade resulting in periodic deflections of the blade.

Abstract: A fluid mover includes a chamber with one or more outlet openings, first and/or second fluidic diaphragm(s) having a portion movable in the chamber to cause fluid to move at the outlet opening, and a coil assembly magnetically coupled to the fluidic diaphragm to move the movable portion of the fluidic diaphragm(s) in response to a current in the coil. The coil assembly includes a coil with an opening, and a plug may be positioned in the opening and/or a support may be positioned around a periphery of the coil. The plug and/or the support may have a magnetic permeability greater than one and be arranged so magnetic field lines created by the coil pass through the plug and/or support. The coil, plug and/or support may define a flat surface, e.g., such that a uniform gap is present between the diaphragm(s) and the coil, plug and/or support.

Abstract: A diaphragm for a fluid mover, such as a synthetic jet device includes separate, concentric substrate sections. The substrate sections may be joined together by a resilient material at a junction between the sections, and the sections may include intermeshed cantilever tabs. The substrate sections may be joined to resist pressure-induced ballooning or similar deformation, yet allow for relatively large axial deformation.