Antiferroelectric materials can store energy, making them attractive for the development of new types of electrostatic capacitor devices. In this context, the small molecule squaric acid (SQA) is of particular interest. Recent studies on SQA crystals have demonstrated their antiferroelectric behaviour and suggest that they could allow high energy density storage [1]. When exposed to an external electric field, such antiferroelectric systems change their polarization from an antiferroelectric (AntiFerro) to a ferroelectric (Ferro) configuration. This transition is at the origin of the charge storage capability of such material. Electrostatic energy can be stored in the resulting ferroelectric state. This Master 2 project proposes to investigate SQA model nanostructures, focusing on their growth un-der UHV conditions, their structural characteristics, and their fundamental local polarization properties. A key challenge of this internship will be to measure and understand the piezoelectric response and relate it to the induced charges during the antiferro-ferroelectric (AFE-FE) transition in SQA nanostructures. This will be done by exploring the dielectric proximity effect induced by the molecular layer in interaction with a 2D graphene sheet. The antiferroelectric properties, including electronic polarization, hysteresis loops, and local current-voltage characteristics, will be studied using standard local probing techniques.