Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detecting the Major Charge-Carrier Scattering Mechanism in Graphene
  Antidot Lattices   Charge carrier scattering is critical to the electrical properties of
two-dimensional materials such as graphene, transition metal dichalcogenide
monolayers, black phosphorene, and tellurene. Beyond pristine two-dimensional
materials, further tailored properties can be achieved by nanoporous patterns
such as nano- or atomic-scale pores (antidots) across the material. As one
example, structure-dependent electrical/optical properties for graphene antidot
lattices (GALs) have been studied in recent years. However, detailed charge
carrier scattering mechanism is still not fully understood, which hinders the
future improvement and potential applications of such metamaterials. In this
paper, the energy sensitivity of charge-carrier scattering and thus the
dominant scattering mechanisms are revealed for GALs by analyzing the maximum
Seebeck coefficient with a tuned gate voltage and thus shifted Fermi levels. It
shows that the scattering from pore-edge-trapped charges is dominant,
especially at elevated temperatures. For thermoelectric interests, the
gate-voltage-dependent power factor of different GAL samples are measured as
high as 509 at 400 K for a GAL with the square pattern. Such a high power
factor is improved by more than one order of magnitude from the values for the
state-of-the-art bulk thermoelectric materials. With their high thermal
conductivities and power factors, these GALs can be well suitable for "active
coolers" within electronic devices, where heat generated at the hot spot can be
removed with both passive heat conduction and active Peltier cooling.

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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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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: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga