  In this work, an experimental investigation of an accordion-like system with
embedded magnetic inclusion is carried out. It is shown that the way that this
structure deforms when subjected to an external magnetic field depends on the
magnetic moment of the embedded magnets and the length of the arms. Stacking of
the accordion-like system leads to the formation of hexagonal honeycombs that
can have a negative, zero, and positive Poisson's ratio. Variation in the
configuration attained depends on the relative positioning of the magnetic
inclusion and the applied magnetic field. In particular, one of the hexagonal
honeycomb arrangements was able to switch between a conventional and a
re-entrant configuration upon the reversal of the external magnetic field. For
all structures considered, the dimensions can be controlled through the
external magnetic field allowing for a high degree of turnability. Furthermore,
their behaviour can be altered in real time. The practical implications of the
results are of interest since they indicate that these structures can be
adopted in numerous applications, such in the design of scaffoldings for
deployable structures, actuators, variable pored sieves, and sound proofing
systems.
