Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crumpling for Energy: Modeling Generated Power from the Crumpling of
  Polymer Piezoelectric Foils for Wearable Electronics   We consider possibility of embedding large sheets of polymer piezoelectrics
in clothing for sensing and energy harvesting for wearable electronic
applications. Power is generated by the crumpling of clothes due to human body
movements. From the mechanics of a gently crumpled foil we develop theoretical
models and scaling laws for the open circuit voltage and short circuit current
and verify via experiments. It is concluded that stretching is the dominant
charge generation mechanism with the open circuit voltage and short circuit
current scaling as $l^{i}$ and $l^{i-1}(\mbox{d}l/\mbox{d}t)$, respectively
with $1\leq i\leq 4/3$ and $l$ the height of the crumple cone.

37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci