Using a MEMS-based Generic Actuation platform(MEGA2D) to explore low temperature optical properties of 2D materials

Moire superlattices created by twisting two dimensional materials have proven a new way of material engineering by drastically changing the underlying electron bands, unlocking a plethora of new strongly correlated phenomena. However, the prevalence of twist angle disorder and lack of twist control have hampered the further development of the field. Motivated to develop the next generation twisted moire materials, here we introduce our novel on-chip platform based microelectromechanical system (MEMS) that can achieve precise in-situ twist between 2D materials. In particular, following our previous demonstration of MEMS-controlled nonlinear optics of twisted hBN interfaces at room temperature, here we report our current progress on combining MEMS devices with low temperature optical measurements of transition metal dichalcogenides.