Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How semiconductor nanoplatelets form   Colloidal nanoplatelets - quasi-two-dimensional sheets of semiconductor
exhibiting efficient, spectrally pure fluorescence - form when liquid-phase
syntheses of spherical quantum dots are modified. Despite intense interest in
their properties, the mechanism behind their anisotropic shape and precise
atomic-scale thickness remains unclear, and even counterintuitive when their
crystal structure is isotropic. One commonly accepted explanation is that
nanoclusters nucleate within molecular templates and then fuse. Here, we test
this mechanism for zincblende nanoplatelets and show that they form instead due
to an intrinsic instability in growth kinetics. We synthesize CdSe and
CdS1-xSex nanoplatelets in template- and solvent-free isotropic melts
containing only cadmium carboxylate and chalcogen, a finding incompatible with
previous explanations. Our model, based on theoretical results showing enhanced
growth on narrow surface facets, rationalizes nanoplatelet formation and
experimental dependencies on temperature, time, and carboxylate length. Such
understanding should lead to improved syntheses, controlled growth on surfaces,
and broader libraries of nanoplatelet materials.

23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph