Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental System for Molecular Communication in Pipe Flow With
  Magnetic Nanoparticles   In the emerging field of molecular communication (MC), testbeds are needed to
validate theoretical concepts, motivate applications, and guide further
modeling efforts. To this end, this paper presents a flexible and extendable
in-vessel testbed for flow-based macroscopic MC, abstractly modeling, e.g., a
part of a chemical reactor or a blood vessel. Signaling is based on injecting
non-reactive superparamagnetic iron oxide nanoparticles (SPIONs) dispersed in
an aqueous suspension into a tube with background flow. A commercial magnetic
susceptometer is used for non-intrusive downstream signal reception. To shed
light on the operation of the testbed, we identify the physical mechanisms
governing the transmission, propagation, and reception of the
information-carrying SPIONs. Moreover, to facilitate system design, we propose
a closed-form parametric expression for the end-to-end channel impulse response
(CIR). The proposed CIR model is shown to consistently capture the
experimentally observed distance-dependent impulse response peak heights and
peak decays for transmission distances from 5cm to 40cm. Moreover, to validate
our testbed, reliable communication is demonstrated based on experimental data
for model-agnostic and model-based detection methods.

28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th