Micromembranes

Micromembranes are thin films with thicknesses typically in the micrometer range. They are often employed in microfluidic devices and lab-on-a-chip systems to create chambers, channels, and separation barriers. These membranes can be fabricated from a variety of materials, including polymers, silicon, and ceramics, with their properties tailored to specific applications.

The function of micromembranes varies greatly. In microfluidics, they can serve as filters, allowing for the separation of particles or cells based on size. They can also act as semi-permeable barriers, controlling the diffusion of molecules between different compartments of a microdevice. In some cases, micromembranes are used to create pneumatic valves or actuators, enabling precise control over fluid flow.

The fabrication of micromembranes often involves microfabrication techniques such as photolithography, etching, and deposition. The specific method chosen depends on the desired material, geometry, and resolution. The development of advanced micromembrane technologies continues to drive innovation in fields like diagnostics, drug delivery, and chemical synthesis.