Key learning points Electrical charges What are free electrons? Cell polarity Conventional current direction Electrons orbit the nucleus. An atom has a neutral charge, because it contains the same ...

Spintronics has attracted much attention as a new direction of electronics. While conventional electronics only uses electron charge, spintronics uses electron spin which is a self-rotating property ...

Scientists observed record-breaking electron mobility — seven times higher than in conventional semiconductors — with a material made from the same elements as quartz and gold. When you purchase ...