Wednesday, March 16, 2022

Additive Manufacturing in Atomic Layer Processing Mode by Atlant 3D

Open Source : Additive Manufacturing in Atomic Layer Processing Mode

Ivan Kundrata,Maïssa K. S. Barr,Sarah Tymek,Dirk Döhler,Boris Hudec,Philipp Brüner,Gabriel Vanko,Marian Precner,Tadahiro Yokosawa,Erdmann Spiecker,Maksym Plakhotnyuk,Karol Fröhlich,Julien Bachmann
First published: 11 March 2022


Additive manufacturing (3D printing) has not been applicable to micro- and nanoscale engineering due to the limited resolution. Atomic layer deposition (ALD) is a technique for coating large areas with atomic thickness resolution based on tailored surface chemical reactions. Thus, combining the principles of additive manufacturing with ALD could open up a completely new field of manufacturing. Indeed, it is shown that a spatially localized delivery of ALD precursors can generate materials patterns. In this “atomic-layer additive manufacturing” (ALAM), the vertical resolution of the solid structure deposited is about 0.1 nm, whereas the lateral resolution is defined by the microfluidic gas delivery. The ALAM principle is demonstrated by generating lines and patterns of pure, crystalline TiO2 and Pt on planar substrates and conformal coatings of 3D nanostructures. The functional quality of ALAM patterns is exemplified with temperature sensors, which achieve a performance similar to the industry standard. This general method of multimaterial direct patterning is much simpler than standard multistep lithographic microfabrication. It offers process flexibility, saves processing time, investment, materials, waste, and energy. It is envisioned that together with etching, doping, and cleaning performed in a similar local manner, ALAM will create the “atomic-layer advanced manufacturing” family of techniques.



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