Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metals by micro-scale additive manufacturing: comparison of
  microstructure and mechanical properties   Many emerging applications in microscale engineering rely on the fabrication
of three-dimensional architectures in inorganic materials. Small-scale additive
manufacturing (AM) aspires to provide flexible and facile access to these
geometries. Yet, the synthesis of device-grade inorganic materials is still a
key challenge towards the implementation of AM in microfabrication. Here, we
present a comprehensive overview of the microstructural and mechanical
properties of metals fabricated by most state-of-the-art AM methods that offer
a spatial resolution $\leq$10$\mu$m. Standardized sets of samples were studied
by cross-sectional electron microscopy, nanoindentation and microcompression.
We show that current microscale AM techniques synthesize metals with a wide
range of microstructures and elastic and plastic properties, including
materials of dense and crystalline microstructure with excellent mechanical
properties that compare well to those of thin-film nanocrystalline materials.
The large variation in materials performance can be related to the individual
microstructure, which in turn is coupled to the various physico-chemical
principles exploited by the different printing methods. The study provides
practical guidelines for users of small-scale additive methods and establishes
a baseline for the future optimization of the properties of printed metallic
objects $-$ a significant step towards the potential establishment of AM
techniques in microfabrication.

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The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
2
The categories of this paper are: math
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas