Short answers, pulled from the story.
Materials science is an interdisciplinary field that studies the relationships between the structure of materials and their properties, using that knowledge to design materials for specific applications. It draws on physics, chemistry, and engineering, and examines material structure from the atomic scale all the way up to the macroscopic level visible to the naked eye.
Materials science began to be widely recognized as a distinct field starting in the 1940s. In the early 1960s, the Advanced Research Projects Agency funded university-hosted laboratories in the United States specifically to expand basic research and training in the materials sciences, accelerating the creation of dedicated departments at major technical universities.
The processing-structure-properties-performance paradigm holds that how a material is processed determines its internal structure, that structure determines its properties, and those properties control the material's performance in service. It is the central framework used to describe materials science and engineering practice.
In the late 19th century, Josiah Willard Gibbs demonstrated that the thermodynamic properties related to atomic structure in various phases are connected to the physical properties of a material. This breakthrough established the foundational link between atomic-scale structure and macroscopic material behavior.
The global semiconductor industry had an estimated market value of US$530 billion in 2021. Silicon makes up the largest portion of semiconductors by both quantity and commercial value, while gallium arsenide is the second most commonly used semiconductor, favored for high-speed electronics in mobile phones, satellite communications, and radar systems.
Nanomaterials are classified as materials with at least one dimension between 1 and 100 nanometers. They are organized, like traditional chemistry, into carbon-based nanomaterials such as fullerenes and carbon nanotubes, and inorganic nanomaterials based on other elements such as silicon. Their value lies in the unique optical, electronic, and mechanical properties that emerge at the nanoscale.