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Full-Text Articles in Physical Sciences and Mathematics
Computational Design Of Two-Dimensional Transition Metal Dichalcogenide Alloys And Their Applications, John Douglas Cavin
Computational Design Of Two-Dimensional Transition Metal Dichalcogenide Alloys And Their Applications, John Douglas Cavin
Arts & Sciences Electronic Theses and Dissertations
The discovery of bronze as an alloy of copper and tin is arguably the earliest form of material design, dating back thousands of years. In contrast, two-dimensional materials are new to the 21st century. The research presented in this dissertation is at the intersection of alloying and two-dimensional materials. I specifically study a class of two-dimensional materials known as transition metal dichalcogenides (TMDCs). Because of the large number of transition metals, there are many combinations of TMDCs that can be alloyed, making experimental exploration of the phase space of possible alloys unwieldly. Instead, I have applied first-principles methods to study …
Stacking Atomically Thin Materials, Hamilton Johnson
Stacking Atomically Thin Materials, Hamilton Johnson
Honors Theses
Atomically thin materials have been an exciting topic of research since graphene was first isolated in 2004. Due to their unique properties, a large amount of research has gone into these materials, but better methods of combining them are still being sought. We present three methods which were attempted for fabricating stacks of atomically thin (or 2D) materials without heating them to the high temperatures required by previous techniques. The first two methods were deemed unsuitable for various reasons, but the third was used to successfully create a stack of hexagonal boron nitride (hBN) encapsulated molybdenum disulfide (MoS2). While the …