Patent ID: 7883919
Filing Date: 2011-02-08
Classification: B81B,H01L,Y10T

Abstract:
1. A method for fabricating a plurality of negative thermal expanding system devices, comprising the steps of: coating a wafer with a thermally decomposable polymer; patterning the decomposable polymer into repeating disk patterns; releasing the decomposable polymer from the wafer and forming a sheet of repeating patterned disks; suspending the sheet of released patterned decomposable polymer into a first solution with seeding compounds for electroless decomposition; removing the sheet of released patterned decomposable polymer from the first solution; suspending the sheet of released patterned decomposable polymer into a second solution to electrolessly deposit a first layer material onto both sides of the sheet, wherein the sheet of released patterned decomposable polymer is held at a predetermined temperature; removing the sheet of released patterned decomposable polymer from the second solution; suspending the sheet of released patterned decomposable polymer into a third solution to deposit a second layer of material having a lower TCE value than the first layer of material onto both sides of the sheet of released patterned decomposable polymer; separating the patterned disks from one another; and annealing thermally the patterned disks to decompose the decomposable polymer and creating a cavity in place of the decomposable polymer.