A new molecular transistor controls single electrons

Single-Molecular Transistor

Together, scientists from different countries have created a molecular transistor that can control the flow of single electrons. A unique transistor is made on a substrate of indium arsenide and consists of a phthalocyanine molecule surrounded by 12 indium atoms. Hexagonally located atoms of indium serve as the gate of this transistor.

The creation of more miniaturized transistors with today’s development of fundamental science is impossible even theoretically. Scientists are developing methods to reliably switch the state of this transistor, because its change depends on the location of each electron. In contrast to the classical scheme of manufacturing transistors by etching the substrate from top to bottom, molecular electronic switches are built upwards, which requires the development of complex control systems over the course of the process.

Scientists have not yet elucidated the mechanism of the dependence of the passage of electrons through the transistor on the orientation of the central molecule. The use of such molecular structures will allow to reduce the size and power consumption of electronic systems by an order of magnitude, which means that the solution of the remaining problems is a matter of time.