In the field of precision manufacturing, while intelligent manufacturing technology optimizes production processes through "macro-control", micro-nano processing technology focuses on micro-scale refinement, creating precision miracles at the nanometer or even atomic level. How does this technology break through physical limits and in which fields does it play the role of a "behind-the-scenes hero"?
Micro-nano processing technology refers to the techniques for designing, processing, manufacturing and measuring materials at the micrometer (10⁻⁶ meters) and nanometer (10⁻⁹ meters) scales. Its core principle integrates knowledge from multiple disciplines such as physics, chemistry, and materials science. Common technical means include photolithography, electron beam exposure, ion beam etching, and nanoimprint printing. Take photolithography technology as an example. It is similar to the "printing technique" in the microscopic world. By using photochemical reactions, patterns are transferred onto a substrate coated with photoresist through a mask plate. After steps such as development and etching, a fine structure at the nanoscale is ultimately formed on the material surface.
In semiconductor chip manufacturing, micro-nano processing technology can be regarded as the "heart". The chip integrates billions or even hundreds of billions of transistors inside, and the size of these transistors has shrunk from the early micrometer level to 3 nanometers or even smaller today. Every upgrade in the manufacturing process relies on breakthroughs in micro-nano processing technology. For instance, the application of extreme ultraviolet lithography (EUV) technology, which uses extreme ultraviolet light with a wavelength of only 13.5 nanometers, can "engrave" more detailed circuit patterns on chips, significantly enhancing the computing speed and integration of chips, and promoting the development of fields such as artificial intelligence and 5G communication.
In addition to the semiconductor field, micro and nano processing technology in biomedical, optical instruments, sensors and other industries are also brilliant. In the field of biomedicine, scientists have utilized micro-nano processing technology to fabricate micrometer-sized biochips, which can perform complex operations such as DNA sequencing and disease diagnosis in an extremely small space. The nanoscale drug delivery system can precisely deliver drugs to diseased cells, reducing side effects on healthy tissues. In the field of optics, metasurface materials with nanostructures can achieve arbitrary regulation of light, and are used to manufacture super-resolution microscopes, micro-optical devices, and even change the display effect of future virtual reality devices.
However, the development of micro-nano processing technology also faces many challenges. On the one hand, as the processing scale approaches the physical limit, factors such as equipment accuracy, material properties, and environmental control have an increasingly significant impact on process stability. On the other hand, the cost of technological research and development is high, requiring top-notch equipment and professional talents. However, with theoretical breakthroughs in quantum mechanics and materials science, as well as the exploration of new processing methods (such as manipulating atoms with scanning tunneling microscopy), micro-nano processing technology is expected to open up broader application Spaces.
From intelligent manufacturing technology to micro-nano processing technology, the field of precision manufacturing is constantly refreshing human understanding of accuracy and efficiency with dual breakthroughs in both macro and micro aspects. In the future, with the integration and innovation of technologies, precision manufacturing may unlock more "impossibilities", laying a solid foundation for cutting-edge industries such as aerospace, new energy, and quantum computing.