  About $26\%$ of the matter in our Universe is made up of Dark Matter (DM),
which interacts with Standard Model (SM) matter only through gravitational or
weak interactions. Many proposals have been made by scientists about the
possible candidates of DM - WIMPs, axions, ALPs, black holes etc. And range of
its mass could be extremely broad - from Planck scale to as light as $10^{-22}$
eV. Experiments to detect DM are extremely challenging, as DM does not exhibit
appreciable interactions with ordinary matter. May be due to such elusive
nature, so far it has not been possible to detect DM, though many experiments
are going on worldwide to do so. With about 40 orders of magnitude variation in
their mass, it is possible that their gravitational interaction too is very
weak, and many creative proposals have been made to detect possible DM
candidates, with vast variation of techniques and target materials. In this
work, we propose a new experiment to detect sub-MeV range DM particles, using
the semiconductor superlattice superstructure (SSS) as the target material.
Such materials have band gap of the order of few hundreds of milli eV, and are
suitable for detecting sub-MeV range particles scattering off electrons. The
photons emitted as a result of excitation of SSS lie in the micrometer range
and may be detected via quantum cascade lasers (QCL).
