Chalcogenide Phase Change Materials (PCM) and metal insulator transition (MIT) materials are a group of materials that are capable of switching between low resistance and high resistance states. These emerging materials have been widely used in optical storage media and memory devices. Over the past recent years. there have been interests in exploiting the PCM and MIT materials. https://www.roneverhart.com/Dove-Dark-Chocolate-Squares-Assortment-120-Piece-Bag/