The diagram represents a slip plane with a position ... The difference in potential energy between the minimum and maximum is the Peierls barrier to dislocation motion. At low temperatures the ...

In order to provide a cell with energy, these molecules have to pass across the cell membrane, which functions as a barrier — but not an impassable one. Like the exterior walls of a house ...

While the electron potential band diagram is illustrated in Figure 4, due to the lack of trap levels (dangling bonds), an electron in the substrate has to overcome a very high energy barrier to jump ...

Consequently, an enzyme-catalyzed reaction pathway has a smaller energy barrier (activation energy) to overcome before the reaction can proceed. Cells generate energy from the controlled breakdown ...