I. Core Application Scenarios and Technical Value

ALD technology, with its atomic-level thin film deposition accuracy (≤0.1nm), excellent conformal property (uniform coverage of complex structures), and material compatibility, focuses on enhancing the performance, stability, and miniaturization level of core components in the field of precision instruments. Specific scenarios include:

1. Performance optimization of optical precision components

o lenses and optical coatings: Multiple layers of anti-reflective coatings (such as SiO₂/TiO₂ nano-film systems) are deposited on the surface of lenses for high-end microscopes and laser interferometers to reduce optical loss (reflectivity from 4% to below 0.1%) and enhance imaging clarity. Or deposit super-hard film layers (such as diamond-like carbon films, DLC) to enhance the wear resistance of the lens (hardness >20GPa) and extend its service life by 3 to 5 times.

o Optoelectronic device window: Functional films (such as Al₂O₃ moisture-proof layer, ZnS anti-reflection film) are deposited on the surface of the window materials of infrared detectors and optical fiber sensors (such as sapphire, silicon wafers) to solve the performance degradation problem in high humidity and extreme temperature environments, meeting the requirements of precision scenarios such as aerospace and semiconductor testing.

2. The reliability of micro sensors and actuators has been enhanced

oMEMS device protection: On the movable structure surface of micro-electromechanical systems (MEMS) sensors (such as accelerometers and pressure sensors), an insulating layer of Al₂O₃ and HfO₂ is deposited to reduce frictional losses and charge accumulation, and improve their measurement accuracy in high-frequency vibration and strong electromagnetic interference environments (error reduction of 10%-15%).

o Micro motors and drive components: Ultra-thin metal lubricating coatings (such as MoS₂, WS₂) are deposited on the bearings and gears of micro motors in precision instruments, reducing the friction coefficient to below 0.05, achieving nanomet-level drive accuracy and meeting the ultra-precision motion requirements of equipment such as photolithography machine worktables and scanning electron microscope stages.

3. Miniaturization and stability of electronic and energy systems

o Microelectronic components: A SiNx passivation layer is deposited on the surface of signal processing chips in precision instruments (such as FPgas and ADCs) to enhance corrosion resistance and radiation resistance, ensuring long-term stable operation in extreme environments such as space exploration and nuclear industry (with a fault-free working time of over 100,000 hours).

Micro energy and energy storage: Deposit LiPON solid electrolyte layers for micro batteries (such as micro lithium batteries and thin-film batteries) of portable precision instruments (such as handheld spectrometers and micro mass spectrometers), solve the problem of electrolyte leakage, and increase energy density (>500 Wh/L) and cycle life (>1000 times).

4. Surface modification of precision measuring tools and reference parts

o gauge blocks and calibration tools: Hard coatings such as CrN and TiAlN are deposited on the surface of laser interferometer gauge blocks and grating ruler markings. The wear resistance is increased by 2-3 times, and the coefficient of thermal expansion matches that of the substrate (such as Yin steel), ensuring high-precision measurement (error <0.1 μm/m).

Ii. Market Size and Growth Drivers

At present, the application of ALD in the field of precision instruments is centered on high-end scientific research instruments and industrial testing equipment. The global market size is expected to be approximately 120 million US dollars in 2024, accounting for 4% to 5% of the total ALD equipment market. Future growth is driven by the following factors:

The trend of miniaturization and integration of precision instruments: With the increasing demand for "Lab-on-a-Chip" and portable analytical instruments, the size of core components has crossed from the millimeter level to the micrometer/nanometer level. The atomic-level thin film regulation capability of ALD has become the key to achieving functional integration (such as depositing selective adsorption films on the surface of micro flow control chips).

Quality control requirements for high-end manufacturing: In fields such as semiconductors and aerospace, the measurement accuracy requirements for precision instruments have upgraded from the "micrometer level" to the "nanometer level" (for example, the positioning accuracy of photolithography machines needs to reach ±1nm). ALD coating can enhance the stability and anti-interference ability of the core components of the instruments, meeting the requirements of international standards such as ISO 10360.

Domestic substitution and technological autonomy: China, Germany and other countries are promoting the independent control of core technologies for precision instruments. ALD equipment, as a "bottleneck" link, has received policy support (such as the "Major Scientific Instrument and Equipment Development" project in China), accelerating the replacement of imported equipment (such as the ALD systems of German SENTECH and Japanese ULVAC).

Iii. Competitive Landscape and Industrial Chain Characteristics

<s:1> International manufacturers dominate the high-end market: Enterprises such as Applied Materials (AMAT) of the United States and Picosun of Germany have occupied the high-end market of semiconductor testing instruments and high-end scientific research equipment by virtue of their ultra-high vacuum deposition technology (vacuum degree <10⁻⁸ Torr) and multi-chamber integration capabilities. Their equipment can achieve atomic-level step coverage (coverage rate >99%), meeting the strict requirements for film uniformity.

Domestic manufacturers focus on mid-to-low-end scenarios: Enterprises such as China Microconductive Nano and Shenyang Keyi have launched laboratory-grade ALD equipment, which are priced at only 1/3 to 1/2 of imported equipment. They have entered fields such as university research instruments and industrial precision measuring tools, and are gradually expanding their market share through customized services (such as process development for specific coatings).

The industrial chain is closely collaborative: Precision instrument manufacturers (such as Zeiss and Thermo Fisher) have deeply cooperated with ALD equipment providers to jointly develop dedicated processes (such as the ALD coating process for electron microscope probes). The cycle from demand definition to equipment delivery has been shortened to 6-12 months, which is 50% more efficient than the traditional model.

Iv. Challenges and Breakthrough Directions

1. Technical barriers and cost constraints

Ultra-precision deposition requirements: Precision instrument components often need nanoscale film thickness control (such as ±0.5nm) and ultra-low defect density (<0.1 pieces /cm²). ALD equipment needs to be equipped with laser interferometry thickness measurement systems and in-situ defect detection modules, with high technical complexity. The price of a single device exceeds 10 million US dollars (high-end industrial grade).

Material and process compatibility: Some precision components use special substrates (such as optical glass, ceramics). ALD precursors (such as metal-organic compounds) may cause substrate corrosion or performance degradation. Therefore, dedicated precursors and low-temperature deposition processes (<100℃) need to be developed.

2. Fragmented market demand

There are numerous types of precision instruments (such as optical, electronic, and mechanical ones), and the requirements for thin film materials (such as oxides, nitrides, and metals), thickness (1-100nm), and performance (hardness, dielectric constant, etc.) vary greatly in different scenarios. Equipment manufacturers need to provide highly customized solutions, which makes large-scale production difficult.

3. Lack of standards and certifications

In the field of precision instruments, no performance evaluation standards for ALD coatings have yet been established (such as long-term stability testing methods and reliability verification processes). Users' trust in ALD technology depends on the accumulation of long-term application data, which limits the rapid market penetration.

V. Future Trends and Market Forecasts

<s:1> Equipment specialization and cost optimization: Develop modular ALD equipment for precision instruments (such as replaceable cavity design), support multi-material deposition (oxides, metals, sulfides), and reduce customization costs; By replacing with domestic core components (such as molecular pumps and mass flowmeters), the price of laboratory-grade equipment can be reduced to 3 to 5 million yuan, promoting its application by small and medium-sized instrument manufacturers.

Technical standardization and ecological construction: Jointly formulate performance standards for ALD coatings in precision instruments with industry associations (such as ISO/TS 18637), establish a third-party testing and certification platform, and accelerate the implementation of the technology; Build a collaborative innovation platform for "equipment suppliers - material suppliers - instrument manufacturers" to shorten the process development cycle.

Expansion of emerging scenarios: Extending into quantum precision measurement instruments (such as atomic clocks, quantum magnetometers) and biomedical precision instruments (such as single-cell analyzers, nanoscale surgical robots), and opening up new growth space by regulating the luminescence efficiency of quantum dots and biocompatible surfaces through ALD films.

Vi. Conclusion

ALD atomic layer deposition equipment has a clear prospect in the field of precision instruments and is a core supporting technology for the performance breakthrough of high-end instruments. Its atomic-level precise control capability can meet the requirements of miniaturization, high stability and long service life. In the short term, it is necessary to break through the bottlenecks of cost and standardization. In the long term, as the technology matures and application scenarios expand, the market size will grow rapidly. It is expected that by 2030, the global market size will reach 400 to 600 million US dollars, with a compound annual growth rate of 15% to 20%. Among them, the Chinese market will lead in growth rate (25% to 30%), and the proportion of domestic equipment will increase to over 35%.