Size, location.
Formerly Solid Sate
"the study of substances in their solid state. This includes the investigation of both crystalline solids in which the atoms are positioned on a repeating three-dimensional lattice, such as diamond, and amorphous materials in which atomic position is more irregular, like in glass."
https://www.ruf.rice.edu/~dulab/realhallbarpic1.jpg
Molecular Beam Epitaxy
Atomic level control over materials
aka Particle Physics
ATLAS (CERN)
STAR detector at Brookhaven's Relativistic Heavy Ion Collider
https://ipst.umd.edu/graduate-programs/biophysics