Hummingbird Scientific’s heating platforms allow researchers to heat 2D materials and—with some options—simultaneously apply voltages to the sample under observation. This example shows the segregation of MoS2 layers at high temperature. Researches at the University of Pennsylvania transformed few-layers of MoS2 with residual polymers from the transfer process into a 2D material with well segregated areas formed of either pure MoS2 or carbon based-composites. The segregation happens at temperature > 1000 °C. Energy-dispersive X-ray spectroscopy (EDS) confirmed the chemical content of each segregated area.
Data provided by Dr. Deep Jariwala and Dr. Eric Stach from the the University of Pennsylvania.