Abstract: A cooling system is described. The cooling system includes a cooling element having a central region and a perimeter. The cooling element is anchored at the central region. At least a portion of the perimeter is unpinned. The cooling element is in communication with a fluid. The cooling element is actuated to induce vibrational motion to drive the fluid toward a heat-generating structure.

Abstract: A cooling system is described. The cooling system includes a cooling element having a central region and a perimeter. The cooling element is anchored at the central region. At least a portion of the perimeter is unpinned. The cooling element is in communication with a fluid. The cooling element is actuated to induce vibrational motion to drive the fluid toward a heat-generating structure.

Abstract: A system including a cooling element and a support structure is described. The cooling element has a first side and a second side opposite to the first side. The cooling element is configured to undergo vibrational motion when actuated to drive a fluid from the first side to the second side. The support structure thermally couples the cooling element to a heat-generating structure via thermal conduction.

Abstract: A system including a plurality of cooling cells is described. Each of the cooling cells includes a support structure and a cooling element. The cooling element has a central region having an axis and a perimeter. The cooling element IS supported by the support structure at the central region and along the axis. At least a portion of the perimeter being unpinned. The cooling element is configured to undergo vibrational motion when actuated to drive a fluid toward a heat-generating structure. A portion of the cooling cells aligned along the axis are physically connected such that the cooling cells form an integrated cooling cell tile.

Abstract: A method for providing a cooling system is described. The method includes providing a plurality of sheets. Each sheet includes at least one structure for a level in each cooling cell of a plurality of cooling cells. A particular level of each cooling cell includes a cooling element having a first side and a second side. The cooling element is configured to undergo vibrational motion to drive fluid from the first side to the second side. The method also includes aligning the sheets, attaching the sheets to form a laminate that includes the cooling cells, and separating the laminate into sections. Each section includes at least one cooling cell.

Abstract: A flow chamber, a cooling system and a method are described. The flow chamber includes an upper chamber including a top wall, an actuator, and a lower chamber. The actuator is located distally from the top wall. The lower chamber receives fluid from the upper chamber when the actuator is actuated. The top wall includes at least one cavity therein. The cooling system utilizes cooling cells including the flow chamber. The method includes driving the actuator at a frequency that directs fluid through the flow chamber.

Abstract: An actuator usable in a cooling system is described. The actuator includes an anchored region and a cantilevered arm. The cantilevered arm extends outward from the anchored region. The cantilevered arm includes a step region, an extension region and an outer region. The step region extends outward from the anchored region and has a step thickness. The extension region extends outward from the step region and has an extension thickness less than the step thickness. The outer region extends outward from the extension region and has an outer thickness greater than the extension thickness.

Abstract: A cooling system is described. The cooling system includes a cooling element having a central region and a perimeter. The cooling element is anchored at the central region. At least a portion of the perimeter is unpinned. The cooling element is in communication with a fluid. The cooling element is actuated to induce vibrational motion to drive the fluid toward a heat-generating structure.

Abstract: An active cooling system is described. The active cooling system includes at least one cooling element that has a vent therein and is in communication with a fluid. The cooling element(s) are actuated to vibrate to drive the fluid toward a heat-generating structure and to alternately open and close at least one virtual valve corresponding to the vent. The virtual valve is open for a low flow resistance and closed for a high flow resistance. The vent remains physically open for the virtual valve being closed.

Abstract: We provide a Hall effect sensor driven with an AC current where the output Hall signal component is at the second harmonic. More specifically, the drive current is at fA and the relevant Hall signal frequency component is at 2fA. The resulting measurement is of the magnetic field strength at fA. This eliminates the need for switching to suppress the parasitic offset signal. This approach also leads to suppression of the induced signal caused in the Hall sensor by the time varying magnetic field.

Abstract: A cooling system is described. The cooling system includes a cooling element having a central region and a perimeter. The cooling element is anchored at the central region. At least a portion of the perimeter is unpinned. The cooling element is in communication with a fluid. The cooling element is actuated to induce vibrational motion to drive the fluid toward a heat-generating structure.

Abstract: An actuator usable in a cooling system is described. The actuator includes an anchored region and a cantilevered arm. The cantilevered arm extends outward from the anchored region. The cantilevered arm includes a step region, an extension region and an outer region. The step region extends outward from the anchored region and has a step thickness. The extension region extends outward from the step region and has an extension thickness less than the step thickness. The outer region extends outward from the extension region and has an outer thickness greater than the extension thickness.

Abstract: A system including an orifice plate, a fan element and at least one channel is disclosed. The orifice plate has at least one orifice therein. The fan element is configured to undergo vibrational motion to drive a fluid through the orifice(s). The fluid is drawn through the channel(s) in response to the fluid being driven through the at least one orifice.

Abstract: We provide a Hall effect sensor driven with an AC current where the output Hall signal component is at the second harmonic. More specifically, the drive current is at fA and the relevant Hall signal frequency component is at 2fA. The resulting measurement is of the magnetic field strength at fA. This eliminates the need for switching to suppress the parasitic offset signal. This approach also leads to suppression of the induced signal caused in the Hall sensor by the time varying magnetic field.