  This work presents an automated three-point bending apparatus that can be
used to study strain engineering and straintronics in two-dimensional
materials. We benchmark the system by reporting reproducible strain tuned
micro-reflectance, Raman, and photoluminescence spectra for monolayer
molybdenum disulfide (MoS2). These results are in good agreement with reported
literature using conventional bending apparatus. We further utilize the system
to automate strain investigations of straintronic devices by measuring the
piezoresistive effect and the strain effect on photoresponse in an MoS2
electrical device. The details of the construction of the straightforward
system are given and we anticipate it can be easily implemented for study of
strain engineering and straintronics in a wide variety of 2D material systems.
