Used DNK MA-4200 #9144337 for sale

DNK MA-4200 mask aligner is a semi-automated photolithography equipment used to fabricate micro-electronic devices. It can be used to fabricate devices with features within a range of 20 to 200 nm. The machine consists of two primary parts, a mainframe and the reader/writer. DNK MA4200 mainframe houses the optical and mechanical components needed for photolithography. This includes a base plate that the mask and substrate are placed onto. The reader/writer is an electronically controlled system that interprets the pattern on the mask and writing it onto the substrate. The machine has several adjustable features to help achieve high precision fabrication. The stepper motor allows for microscope adjustments along the X and Y axes for a total of four degrees of freedom. The mask stage can be moved in 5 continuous increments and can also be rotated in five-degree increments. The reader/writer uses an ultraviolet laser for exposure and a six-zone stage for focusing the photoresist onto the substrate. When a fabrication job is loaded into MA 4200, the mask is first aligned with the substrate using the X, Y, and rotation stage. Then, a series of scans are initiated with the mask and the substrate. Each scan takes several passes and laser scale to write the pattern onto the substrate. The length of each scan depends on the resolution and accuracy desired. Once the pattern is written onto the substrate, MA-4200 has an automatic develop cycle. This step requires more precision than other parts of the process and is designed to apply a thin layer of photoresist to select portions of the substrate. Overall, DNK MA 4200 mask aligner is a versatile, self-contained tool that is essential for high-precision microfabrication. It is capable of accurately producing features as small as 20 nanometers with repeatable results, which makes it ideal for creating complex designs for future electronic devices.