What is microfluidics? Why use laser welding machine?

What is microfluidics?

Microfluidics is a technology that can precisely manipulate and control microscale fluids, especially submicron structures. In the 1980s, microfluidics began to emerge and developed in the fields of DNA chips, chip labs, micro-injection, micro-thermodynamics, etc.

Microfluidics chips were originally called "chip labs" in the United States and "micro-integrated analysis chips" in Europe. They are the main platform for the realization of microfluidics. They can integrate basic operating units such as sample preparation, reaction, separation, and detection in biological, chemical, and medical analysis processes into a micron-sized chip, automatically completing the entire analysis process. Microfluidic control chips have the advantages of light volume, small amount of samples and reagents, fast reaction speed, large-scale parallel processing, and disposable. They have great potential in biology, chemistry, medicine and other fields. In recent years, they have developed into a new research field that intersects biology, chemistry, medicine, fluid, electronics, materials, machinery and other disciplines.

Why do we use Laser welding machine?

So why do we use laser welding of microfluidic control chips? Here we will introduce the core of instant detection - microfluidic chips. Microfluidic chips integrate a series of steps such as sample preparation, biochemical reaction, and result detection onto a very small plastic-based chip. If we want to convert the reagent volume into microliters or even nanoliters or picoliters later, the requirements for the welding process are very high.

However, some common ultrasonic, hot pressing and adhesive technologies have fatal flaws. For example, the disadvantage of ultrasonic technology is that it is easy to overflow and dust; the disadvantage of hot pressing technology is that it is easy to deform and overflow, and the production efficiency is extremely low. However, the disadvantage of adhesives is not only that the adhesives are easy to contaminate the flow channel, but also that the production cost will increase due to process requirements.

Many instant test manufacturers intend to gain more value in this fierce competition, so they continue to improve parallelization, automation and integration, hoping to develop better testing technology. Microfluidic chip laser welding machine is an indispensable and important equipment.

Since laser welding is non-contact welding, it will use an extremely fine laser beam that is invisible to the naked eye to scan the chip during operation. It can connect the parts that need to be welded at a very fast speed without any impact on the flow channel. Moreover, the welding accuracy from the edge of the welding line to the flow channel is about 0.1mm. There is no vibration, no noise, and no dust in the entire welding process. Therefore, this extremely clean precision welding method is highly sought after in the precision welding needs of medical plastic products.

This high-precision, fast, extremely clean and easy-to-operate equipment is undoubtedly the most suitable equipment for the instant detection industry. For the future vigorous development of the instant detection industry, I believe that the microfluidic chip laser welding machine will also become the preferred equipment for all instant detection manufacturers!