Abstract:
The present invention provides a method to fabricate Ni-Co alloy where in this process, electrodeposition of Ni-Co alloy is conducted in a non-aqueous electroplating bath consisting of a mixture of ionic liquid, 1-ethyl-3-methyllimidazolium chloride (EMIC) [20] and organic compound, ethylene glycol (EG) [22] as the solvent together with Ni and Co ions, with the application of a magnetic field parallel to the cathode [24] surface. With application of an external permanent magnetic field parallel to the cathode [24] surface, the rate of transport of Ni and Co ions to the cathode surface is increased, therefore increasing the current density of electrodeposition of Ni-Co alloys. As the magnetic force is stronger for the Co ion compared to Ni ion, there will be an increased transport of Co ion compared to the Ni ion to the cathode surface. This result in higher Co content in the Ni-Co alloy compared to Ni, even when the bath composition ratio of Co is lower than the bath composition of Ni.
Abstract:
The present invention provides an piezoelectric based energy harvester apparatus [20] consisting of a specially designed mechanical structure, hollow cylindrical structure [30] with a piezoelectric cantilever bridge [34] within its chamber, that upon exposure to the collected rain water incoming from the roof structure [24] into the post [26], will move or vibrate due to buoyant force of the strategically trapped rain water. With the structure built-in mechanical cantilevers bridge [34] that has piezoelectric properties, the vibration of the cylindrical structure [30] is followed by the generation of micro energy. Therefore, besides serving its traditional purpose for protection, post/pillar can also be used to produce energy which can power up low power electronic devices such as for precision agriculture application. This apparatus can also act as an alternative energy harvester during raining season where no sunlight is available. Fig. 2
Abstract:
AN ENERGY HARVESTING DEVICE (100) COMPRISES A HOLLOW PRISMATIC BODY (I12) FORMED OF A PLURALITY OF FACES ARE COATED WITH A PIEZOELECTRIC LAYER THEREON, A PLURALITY OF ELONGATED CANTILEVERS (14) ARE ARRANGED SPATIALLY FROM EACH OTHER AND INSERTED THROUGH THE FACES OF THE HOLLOW PRISMATIC BODY (12), THE ELONGATED CANTILEVERS (14) ARE COATED WITH A PIEZOELECTRIC LAYER THEREON, AND AT LEAST ONE INNER RESILIENT MEANS (16) OF A PARTICULAR STIFFNESS HAVING ONE END ATTACHED THE HOLLOW PRISMATIC BODY (12) AFTER DETERMINED THE CENTRE OF GRAVITY AND MASS OF THE HOLLOW PRISMATIC BODY (12) AND THE OTHER END ATTACHED TO A BASE (18) IN ORDER TO BE STABLE ON ITS AXIS, WHEREIN THE DEVICE (100) IS CAPABLE OF DETECTING SMALL AMOUNT OF ENVIRONMENTALLY AVAILABLE VIBRATION SOURCES AND PRODUCING HUGE VIBRATION TO THE HOLLOW PRISMATIC BODY (12) AND THE CANTILEVERS (14), THEREBY INDUCING THE DEVICE (100) TO GENERATE ELECTRICAL ENERGY. THE ENERGY HARVESTING DEVICE (100) IS CAPABLE OF HARVESTING ENERGY FROM AMBIENT LOW SCALE VIBRATION. THEREFORE IT IS APPLICABLE TO ANY KIND OF ENERGY HARVESTING WHERE MECHANICAL FORCE IN NEED TO CONVERTED TO ELECTRICAL ENERGY.
Abstract:
An energy harvesting device (100) comprises a hollow prismatic body (12) formed of a plurality of faces are coated with a piezoelectric layer thereon, a plurality of elongated cantilevers (14) are arranged spatially from each other and inserted through the faces of the hollow prismatic body (12), the elongated cantilevers (14) are coated with a piezoelectric layer thereon, and at least one inner resilient means (16) of a particular stiffness having one end attached the hollow prismatic body (12) after determined the centre of gravity and mass of the hollow prismatic body (12) and the other end attached to a base (18) in order to be stable on its axis, wherein the device (100) is capable of detecting small amount of environmentally available vibration sources and producing huge vibration to the hollow prismatic body (12) and the cantilevers (14), thereby inducing the device (100) to generate electrical energy. The energy harvesting device (100) is capable of harvesting energy from ambient low scale vibration. Therefore it is applicable to any kind of energy harvesting where mechanical force in need to converted to electrical energy.
Abstract:
An energy harvesting device (100) comprises a hollow prismatic body (12) formed of a plurality of faces are coated with a piezoelectric layer thereon, a plurality of elongated cantilevers (14) are arranged spatially from each other and inserted through the faces of the hollow prismatic body (12), the elongated cantilevers (14) are coated with a piezoelectric layer thereon, and at least one inner resilient means (16) of a particular stiffness having one end attached the hollow prismatic body (12) after determined the centre of gravity and mass of the hollow prismatic body (12) and the other end attached to a base (18) in order to be stable on its axis, wherein the device (100) is capable of detecting small amount of environmentally available vibration sources and producing huge vibration to the hollow prismatic body (12) and the cantilevers (14), thereby inducing the device (100) to generate electrical energy. The energy harvesting device (100) is capable of harvesting energy from ambient low scale vibration. Therefore it is applicable to any kind of energy harvesting where mechanical force in need to converted to electrical energy.