Joint efforts of scientists from different countries have created a molecular transistor that can control the flow of single electrons. The unique transistor is made on an indium arsenide substrate and consists of a phthalocyanine molecule surrounded by 12 indium atoms. The hexagonal indium atoms serve as the gate of this transistor.
The creation of more miniature 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 for manufacturing transistors by etching the substrate from top to bottom, molecular electronic keys are built up from bottom to top, which requires the development of complex control systems over the course of the process.
Scientists have not yet clarified 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 make it possible to reduce the size and energy consumption of electronic systems by an order of magnitude, which means that the solution of the remaining problems is a matter of time.