Science news articles about 'energy barrier'

... . Surface free energy also rose, suggesting that the presence of cranberry juice creates an energy barrier that repels the bacteria. The researchers also placed the bacteria and urinary tract cells ...

... an energy bump that can halt the movement of excitons or allow them to flow. Once that energy barrier is removed, the exciton can travel to the transistor output and transform to light, which could be ...

... the surface free energy unchanged, the origin of a comparable energy barrier presents a paradox that is not easy to understand." Using experimental and theoretical analyses, the paper explains this ...

... the small length scales involved, it becomes possible for a particle to disappear through an energy barrier and suddenly appear on the other side, without expending energy. Tracking such 'tunneling' ...

... large. The famous Klein paradox predicts that if the barrier is made even bigger still, tunnelling ... coupling of the wave functions on both sides of the energy barrier within the double quantum dot. ...

Quantum Effects: Electrons penetrate energy barriers from lower orbitals than realized.