Time-varying metamaterial: illustration of how a 2D photonic time crystal can amplify light waves. (Courtesy: Xuchen Wang/Aalto University) A major barrier to creating photonic time crystals in the ...

Marten Patt studied physics at RWTH Aachen University, and finished his diploma thesis on time- and laterally-resolved spin polarization in semiconductors in 2009. He then joined the group of Claus ...

Electrons are tiny and constantly in motion. How they behave in a crystal lattice determines key material properties: ...

Consider the following physics problem. An object with a mass of 1 kg and a velocity of 1 m/s in the x-direction has a net force of 1 Newton pushing on it (also in the x-direction). What will the ...

(Santa Barbara, Calif.) — A condition long considered to be unfavorable to electrical conduction in semiconductor materials may actually be beneficial in 2D semiconductors, according to new findings ...