Abstract: An apparatus comprising: a thermally-actuated microactuator configured to deflect a component in dependence on an applied stimulus; and an extender having a length configured to increase deflection of the component by the microactuator, wherein the extender comprises one or more voids.

Abstract: A device, and method of operating the device, are disclosed. The device includes: a heat spreader having a first side and a second side opposite the first side, the heat spreader including at least one oscillating heat pipe arranged between the first side and the second side, at least one of the at least one oscillating heat pipe including a plurality of interconnected channels including a working fluid; at least one optoelectronic component coupled to the first side of the heat spreader; and at least one thermoelectric cooler, wherein a cold side of the at least one thermoelectric cooler is coupled to the second side of the heat spreader. The heat spreader may include one or more heat exchange features.

Abstract: An article comprises an elastic membrane having a mass element provided thereon the mass element having an asymmetric shape and a resonator structure having a resonance frequency. The elastic membrane is configured to oscillate in response to a sound wave incident thereon, and the asymmetry of the mass element is configured to induce a flapping motion which in combination with the oscillation of the membrane trap vibrational mechanical energy from the sound wave and the resonator structure is configured to absorb at least a part of the incident sound wave. A composite material comprising the article is also disclosed.

Abstract: Various exemplary embodiments relate to a heat sink system. The heat sink system may include: a first heat sink segment including a first fluid inlet and a first fluid outlet having an outlet flow path; and a second heat sink segment including a second fluid inlet having an inlet flow path and a second fluid outlet. The second heat sink segment may be arranged in a placement position within the heat sink system so that the second fluid inlet receives fluid from substantially other sources than the first outlet flow path. Various exemplary embodiments relate to a heat sink segment. The heat sink segment may include: a base plate; a plurality of vertical fins; a horizontal wall; a first fluid opening; and a second fluid opening. The first fluid opening may face a different direction than the second fluid opening.

Abstract: Techniques for heat transfer are provided. In one aspect of the invention, a heat-transfer device is provided. The heat-transfer device comprises one or more microchannels suitable for containing a heat-transfer fluid, one or more of the microchannels having protruding structures on at least one inner surface thereof configured to affect flow of the heat-transfer fluid through the one or more microchannels. The structures may comprise posts coated with a hydrophobic coating.