Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tensional twist-folding of sheets into multilayered architectures and
  scrolled yarns   Twisting sheets as a strategy to form yarns with nested structure lacks
scientific guiding principles but relies on millennia of human experience in
making catguts, food packaging, and redeployable fabric wearables. We formulate
a tensional twist-folding route to making yarns with prescribed folded,
scrolled, and encapsulated architectures by remote boundary loading. By
harnessing micro-focus x-ray scanning to noninvasively image the fine internal
structure, we show that a twisted sheet follows a surprisingly ordered folding
transformation as it self-scrolls to form structured yarns. As a sheet is
twisted by a half-turn, we find that the elastic sheet spiral accordion folds
with star polygon shapes characterized by Schl\"afli symbols set by the primary
instability. A scalable model incorporating dominant stretching modes with
origami kinematics explains not only the observed multilayered structure,
torque, and energetics, but also the topological transformation into yarns with
prescribed crosssections through recursive folding and twist localization. By
using hyperelastic materials, we further demonstrate that a wide range of
structures can be readily redeployed, going well beyond other self-assembly
methods in current broad use.

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The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess