Solids can be categorised into conductors, semiconductors or insulators by their ability to conduct electricity. Electron band theory explains differences in conduction. Semiconductors can be doped ...

This lesson starts by defining what an ohmic conductor is, before looking at bulbs and why they are not ohmic conductors and why the current and voltage aren’t directly proportional in them. We then ...

Researchers in China and at UC Davis have measured high conductivity in very thin layers of niobium arsenide, a type of material called a Weyl semimetal. The material has about three times the ...

png, 472.8 KB pptx, 1.81 MB png, 185.64 KB docx, 28.45 KB docx, 281.06 KB This resource is a complete lesson that covers Conductors & I-V Characteristics for the OCR A Level Physics A course. However, ...

Anyons – the particle-like collective excitations that can exist in some 2D materials – tend to bunch together in a two-dimensional conductor. This behaviour, which has now been observed by physicists ...

One-atom thick materials like graphene (a 2D sheet of carbon) conduct protons extremely well but they become impermeable to protons the thicker they get. Indeed, 2D molybdenum sulphide (MoS 2) becomes ...

Experiments have uncovered a new form of Hall effect in organic conductors that confine current flow mostly along one-dimensional molecular strands. The Hall effect occurs when a magnetic field is ...

A time-tested photon interferometry technique is used to study the statistics of photons emitted by current fluctuations in a quantum conductor. A quantum conductor with current fluctuations emits ...

Polymers with ultrahigh thermal conductivity are essential for various thermal management applications, including microelectronics cooling, energy storage, and conversion. Despite their importance, ...