A collaboration involving the Massachusetts Institute of Technological know-how (MIT) and the Wyss Institute for Biologically Influenced Engineering at Harvard, has created a new 3D printing certification-driven micro fabrication technique.
Termed “Implosion Fabrication” or “ImpFab” the process will take a leaf out of Lewis Carroll’s Alice in Wonderland, shrinking 3D printed objects down to sizing.
Shrinking objects to 10 situations their unique dimension
The ImpFab system provides objects with nanoscale capabilities (significantly less than 1μm in sizing). This is accomplished by the use of a sacrificial hydrogel.
In this method, sometimes made use of in 3D bioprinting, a hydrogel is 3D printed as a scaffold. This scaffold, which can consider on just about any condition (see Alice down below) is then seeded with particles of a preferred materials, i.e. metals, semiconductors and biomolecules.
Following seeding, the hydrogel is dehydrated, or “imploded.” This outcomes in a shrinkage of 10 occasions (or more of) the scaffold’s previous dimensions.
Nanofabrication is a genuine obstacle for the 3D printing certification marketplace. Previously working in this sphere are Nanoscribe, maker of the Photonic Specialist GT two-photon lithography 3D printer, the Greer Team at California Institute of Technology (CalTech) earning microbatteries, and Singapore’s National Additive Production certification Innovation Cluster (NAMIC).
In a paper presenting the ImpFab approach reserach show the potential to “directly generate hugely conductive, 3D silver nanostructures inside an acrylic scaffold by using volumetric silver deposition.”
“Future iterations,” conclude the authors, “may use alternative chemistries, these types of as dendrimeric complexes for direct deposition of metals or semiconductors inside of the hydrogel, or DNA-addressed material deposition.”
Entire outcomes of the study, titled “3D nanofabrication by volumetric deposition and controlled shrinkage of patterned scaffolds” are accessible in Science journal. The paper is co-authored by Daniel Oran, Samuel G. Rodriques, Ruixuan Gao, Shoh Asano, Mark A. Skylar-Scott, Fei Chen, Paul W. Tillberg, Adam H. Marblestone and Edward S. Boyden.
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Featured image demonstrates a 3D printed ImpFab scaffold. Impression via Ed Boyden et. al.