4D printer : Printing self-assembling 3d object!

Everybody knows about 3d printer and of-course it becomes handy tool for innovators ,Students ,Engineers and for designers. 3d printer can build any object in three dimensions , by just slicing it in to possible no. of 2D layers.That is why 3d printing is called additive manufacturing process ,because in this process we are adding material rather than cutting or shaping. imagine if your printer has ability to print the 3D object as well as assemble it self! Introduction of 4D Printer ARC Center of Excellence for Electromaterials Science (ACES) , the University of Wollongong (UOW) ,MIT researchers,Self-Assembly Lab, Stratasys and Autodesk working on new concept of 4D printer. 4D printing is technology that print multi-material object and produce any mechanism that will transform 1D to 3D shape,2D to 3D shape or morph from one 3D shape into another by using heat, water, light or any other energy input.this technique offers adaptability and dynamic response for structures and sy