SAMIE stands for “Self-Assembled Monolayer Induced Epitaxy” and it is a technique used in nanotechnology and materials science.
In SAMIE, a monolayer of self-assembled molecules is created on a substrate surface, which then acts as a template or guide for the ordered growth of subsequent atomic layers. This technique is commonly employed in the fabrication of thin films, particularly in the growth of compound semiconductors, such as gallium arsenide (GaAs).
The self-assembled monolayer consists of organic molecules that have a specific chemical affinity to the substrate's surface. These molecules, when applied to the substrate in a controlled manner, form a well-organized monolayer through intermolecular forces, such as hydrogen bonding, van der Waals' forces, or covalent bonding. The self-assembly process results in a densely packed and uniform layer of molecules on the substrate's surface.
Based on this orderly monolayer, the subsequent atomic layers are deposited or grown in a way that closely matches the crystal structure of the template. As a result, the atomic layers exhibit improved crystal quality, reduced defects, and enhanced electronic properties.
Overall, SAMIE is a powerful technique for controlling the growth and properties of thin films, offering numerous applications in electronic devices, optoelectronic materials, and nanoscale fabrication. By enabling precise atomic arrangement, SAMIE contributes to the development of advanced materials with superior performance and functionality.
