Abstract:
A method of mechanical-to-electrical energy conversion utilizes a mechanical spring (22) in combination with a rapid-action variable inductance magnetic flux switch to convert a spring-loaded mechanical energy into a change in magnetic flux captured by an electrical coil element (32) within the magnetic flux switch. The change in coil inductance and magnetic flux induces a current to flow through the electrical coil in the form of a a pulse of electrical energy that may be stored. The electrical coil (32) is coupled to the mechanical spring (22) so that each time the spring is released, the coil moves with respect to a magnetic core (28) and a change in flux is created. The application of an external mechanical force (such as human locomotion) functions to compress and subsequently "unlock" the mechanical switch, allowing for the electrical energy associated with the application of aperiodic forces to be harvested.
Abstract:
An apparatus providing mechanical-to-electrical energy conversion generates electrical current by moving a conductive fluid in the presence of magnetic field. The motion of the fluid is induced by a mechanical energy source and the generated electrical current is directed to a useful load. The proposed apparatus utilizes a conductive fluid as a "liquid rotor" has substantially different radial velocity distribution than the conventional, prior art solid rotor. The apparatus includes an inverter, controlled by the flow of the conductive fluid, to generate a train of pulses as an output, where the pulses are used by an associated transformer to provide an AC output voltage.
Abstract:
Provided is an apparatus. In one embodiment, this apparatus includes a substrate having a surface, and a plurality of nanostructures each having a first end and a second end, wherein the first end of each of the plurality of nanostructures is attached to the surface. At least a portion of the second ends of the plurality of nanostructures, in this embodiment, are bent toward one another to form two or more similarly configured clumps each including two or more nanostructures.
Abstract:
An apparatus includes a substrate having a top surface, a substantially regular array of raised structures located over the top surface, and a layer located on the top surface between the structures. Distal surfaces of the structures are farther from the top surface than remaining portions of the structures. The layer is able to contract such that the distal surfaces of the structures protrude through the layer. The layer is able to swell such that the distal surfaces of the structures are closer to the top surface of the substrate than one surface of the layer.
Abstract:
An apparatus that comprises a liquid mirror. The liquid mirror includes a liquid that forms an interface with a fluid adjacent to the liquid. The liquid mirror also includes a layer of reflective particles located at the interface, wherein the layer forms a reflective surface.
Abstract:
An energy harvesting apparatus utilizes a modular structure to preserve the proper alignment between a chain of energy-producing elements and an energy- producing channel (within which the chain is located and free to slide along, creating electrical energy from mechanical movement). The channel includes a plurality of rigid modules that are separated by flexible segments of tubing. The rigid channel modules house the energy-producing electrodes and/or coils. The chain includes a plurality of rigid modules that are attached along a flexible string in a spaced-apart configuration. The rigid chain modules house the energy- producing magnets and/or conductive droplets. The combination of the flexible channel segments and chain string allow for freedom of motion of the apparatus (required for human locomotion, for example), while providing the desired "fixed" alignment between the rigid energy-producing modules.
Abstract:
An energy harvesting system for converting mechanical energy into electrical energy uses an electrostatic arrangement based upon the interaction between conductive microfluidic droplets and dielectric-coated electrodes in combination with an electromagnetic arrangement based upon the interaction between magnetic elements and coils, with the two arrangements disposed in an interleaved configuration that provides a degree of synergy to the overall system in the form of providing spacings between adjacent elements and providing a bias voltage source for the electrostatic arrangement from the energy created by the electromagnetic arrangement.
Abstract:
An apparatus comprising a mechanical-to-electrical energy converting device utilizes an array of microfluidic droplets i n association with a planar electrode and separated by a dielectric layer to form a capacitive structure. An elastic spacer is also disposed between the planar electrode and array of droplets, such that as the spacer is compressed, the contact area of the droplets and the dielectric is increased - increasing the total capacitance value. Periodic changes in the force applied to the elastic spacer (such as associated with vibrational motion) creates a periodic change in the capacitance value, generating an electrical current flow between the planar electrode and array of conductive droplets.
Abstract:
Device comprising: a first substrate 102; a plurality of first raised elements 106 on the first substrate, the first raised elements mutually spaced apart by first channel regions 118 on the first substrate, each of the first raised elements having a first distal end 132, the first distal ends forming a first array 200; hydrophobic molecules 152 on the first raised elements; and primary reactive molecules on the first raised elements for generating hydrophilic reaction products. Techniques for utilizing the device.
Abstract:
An arrangement for regulating the interior temperature of footwear takes the form of an insole (or midsole) and includes a heat generator and a heat storage and release element. The heat generator may be configured to capture mechanical energy in the form of human locomotion and convert the captured energy into heat. Other types of heat generators may also be used. The heat storage and release element comprises one or more phase change materials that function to absorb generated heat (to keep footwear from overheating), as well as release the stored heat when the ambient temperature of the footwear drops below the transition temperature of the material.