Abstract: The present invention provides devices and methods for making nano structures such a nanoheater. In one embodiment, the nanoheater element comprises a first reactive member and interlayer disposed in communication with at least a portion thereof. Preferably, contact between the first and second reactive members of the nanoheater element can yield at least one exothermic reaction. A nanoheater device of the invention can optionally comprise a substrate on which the first reactive member is positioned in combination with other components. The invention also provides a nanoheater system comprising a plurality of nanoheater elements. Exemplary nanoheater elements and systems can be used to perform a method of the invention in which heat is produced. Methods includes processes for fabricating nanostructures such as layered devices, nanorods and nanowires.

Abstract: A vibratory powder consolidation process is provided in which a powder material is subjected to vibratory energy while under static compressive loading. The process provides rapid, full-density powder consolidation with minimum or no structural degradation.

Abstract: The present invention provides devices and methods for making nano structures such a nanoheater In one embodiment, the nanoheater element comprises a first reactive member and interlayer disposed in communication with at least a portion thereof. Preferably, contact between the first and second reactive members of the nanoheater element can yield at least one exothermic reaction. A nanoheater device of the invention can optionally comprise a substrate on which the first reactive member is positioned in combination with other components. The invention also provides a nanoheater system comprising a plurality of nanoheater elements. Exemplary nanoheater elements and systems can be used to perform a method of the invention in which heat is produced. Methods includes processes for fabricating nanostructures such as layered devices, nanorods and nanowires.

Abstract: A single weld head, torch, is time-shared to implement any specified distributed heat input by scanning along a weld centerline and a region surrounding the centerline while adjusting the torch intensity accordingly on its path. The scan welding torch reciprocates rapidly on dynamically scheduled trajectories while power to the torch is modulated in real-time to provide a regulated heat input distribution in the weld region and on the weld centerline. The method generates a smooth and uniform temperature field, and deposits the full length of the weld bead simultaneously at a controlled solidification rate. As a result, grain interlacing on the bead interface in conjunction with a regulated material microstructure yield improved tensile joint strength.