In cutting-edge fields such as semiconductor manufacturing, new material research and development, and biomedical research, nanoscale imaging and measurement technology has become the core means of product development and quality control. Whether it is the atomic resolution imaging of scanning electron microscopy or the sub nanometer surface morphology detection of 3D optical profilers, any small environmental vibration can cause imaging blurring, data distortion, and even complete failure of detection results. Therefore,Vibration reduction table effectThe quality of high-precision equipment directly determines whether it can operate normally, and has become a core indicator for enterprises and research institutions to evaluate whether the laboratory environment meets the standards. With the continuous popularization of nanoscale processes, the market's requirements for the effectiveness of vibration reduction tables are becoming increasingly stringent. Active vibration reduction tables, represented by the Nikon HERZ series, have gradually become standard equipment for nanoscale imaging devices due to their excellent vibration isolation capabilities.
1、 The ultimate requirement of nanoscale imaging for vibration environment
The working principle of nanoscale imaging devices determines their high sensitivity to environmental vibrations. Taking scanning electron microscopy as an example, when the magnification exceeds 10000 times, small ground vibrations can cause the electron beam to shift, resulting in image distortion or ghosting; When the magnification reaches 100000 times or more, even slight vibrations caused by human movement can make the image completely unrecognizable. For 3D optical profilometers with a vertical resolution of up to 0.1nm, vibrations with amplitudes exceeding 10nm can significantly reduce the repeatability of measurement data and fail to meet the quality control requirements of industrial production.
The vibration sources in laboratories and production workshops are complex and diverse, including low-frequency vibrations generated by road vehicle traffic, factory equipment operation, chimney operations, as well as high-frequency vibrations generated by floor structure resonance, air conditioning system operation, and personnel movement. Among them, low-frequency vibrations between 1-200Hz are the most difficult to eliminate and are also the main factor affecting the quality of nanoscale imaging. The traditional passive vibration reduction platform can only isolate high-frequency vibrations above 200Hz and has almost no effect on low-frequency vibrations. Its vibration reduction platform effect cannot meet the needs of nanoscale imaging.
2、 Core technical support for the effectiveness of different series of active vibration reduction tables
The active vibration reduction platform adopts piezoelectric sensing and feedback control technology, which can actively detect and counteract environmental vibrations. Its vibration reduction effectiveness is far superior to traditional passive vibration reduction platforms. At present, the mainstream HERZ series active vibration reduction table in the industry is divided into multiple models according to application scenarios, each with its own technical advantages and adaptation range.
The HERZ AVI-200 series, as a compact active vibration isolation system, focuses on vibration protection for small and medium-sized precision equipment. Its vibration isolation range covers 1-200Hz, and in the frequency range above 10Hz, the vibration transmission rate can be as low as -35dB, which can reduce the amplitude of environmental vibrations by more than 97%. This series of products has a six degree of freedom vibration isolation capability, which can simultaneously isolate horizontal and vertical vibrations. The vibration response time is only 5-20ms, which can quickly counteract sudden vibrations and ensure stable operation of the equipment in dynamic environments. Its system noise is below 50nG/√ Hz, which does not introduce additional vibration interference, making it particularly suitable for desktop high-precision equipment such as atomic force microscopes, interferometers, and 3D optical profilometers.
For scenarios where heavy equipment needs to be carried, the HERZ AVI-600 series active vibration reduction platform is a better choice. This series adopts a modular design, which can improve the system's load-bearing capacity by increasing the number of isolation modules. The maximum load-bearing capacity can reach 9000 pounds, and it can be adapted to large precision instruments such as transmission electron microscopes and lithography equipment. Its core advantage lies in the absence of low-frequency resonance characteristics, suppressing all mechanical resonances through internal feedback loops, fundamentally avoiding the impact of resonance on the equipment. At the same time, this series of products does not require air pressure supply or daily calibration, is easy to install, and can be used continuously for many years without faults, greatly reducing maintenance costs for users.
For ultra-high resolution imaging equipment that is extremely sensitive to low-frequency vibrations, the HERZ UT-1000A active vibration reduction table customized and integrated by Unicon provides industry-leading vibration isolation performance. This series extends the active isolation starting frequency to 0.5Hz, which can effectively eliminate the ultra-low frequency vibration interference caused by urban subways and heavy vehicle traffic. It adopts an ultra-thin modular design, and does not require professional lifting equipment during installation. Only the instrument leveling foot needs to be raised by 5 inches to place the vibration reduction module. Installation and debugging can be completed within 1 hour, and the overall contour of the microscope is basically unchanged after installation, perfectly adapting to various high load electron microscopes. It is precisely these targeted technological designs that fundamentally ensure the stability and reliability of different series of active vibration reduction tables, enabling them to adapt to the needs of various nanoscale imaging devices.
3、 How to choose a vibration reduction table that meets quality control standards
Choosing the appropriate vibration reduction platform is the key to ensuring the quality of nanoscale imaging. Only by accurately selecting the equipment type and on-site environment can the vibration reduction platform achieve the expected effect and meet strict quality control standards.
When selecting equipment, enterprises and research institutions should first clarify the weight and size of the equipment, and choose a vibration reduction platform model that matches the load-bearing capacity. For small desktop devices such as 3D profilometers and atomic force microscopes, the HERZ TS series or AVI-200 series can meet the requirements; For medium-sized scanning electron microscopes, the AVI-400 series can be chosen; For heavy-duty transmission electron microscopes, it is recommended to use the AVI-600 series or UT-1000A series, and match the equipment weight by increasing the number of modules.
Secondly, the corresponding isolation frequency range should be selected based on the vibration environment on site. If the laboratory is located in a high-rise building, close to a main traffic artery or subway line, and there is obvious ultra-low frequency vibration, the UT-1000A series that supports 0.5Hz ultra-low frequency isolation should be prioritized. In addition, the installation convenience and maintenance cost of the vibration damping table should also be considered. HERZ's full range of active vibration damping tables do not require air pressure supply or daily calibration, and Younikon provides on-site installation and debugging services, which can significantly reduce the user's threshold for use.
Finally, suppliers with a comprehensive service system should be selected. Younikon has branches in multiple cities across the country, providing full process services from on-site vibration testing, solution design, installation and commissioning, and after-sales maintenance. Its professional engineers will optimize the vibration reduction plan based on the customer's on-site vibration data, maximize the effectiveness of the vibration reduction table, and provide 7 × 24 hours of online technical support to ensure that the equipment can maintain stable vibration isolation performance throughout its entire life cycle.
In summary, with the continuous development of nanoscale imaging technology, the requirements for environmental vibration are also constantly increasing. The HERZ series active vibration reduction table, with its targeted technical design, extensive equipment adaptability, and reliable performance verified through extensive testing, can effectively eliminate various environmental vibration interferences. Its vibration reduction table effect can fully meet the strict quality control standards of nanoscale imaging. With rich industry experience and professional technical services, Younikon can provide customers with one-stop vibration reduction solutions from product selection to customized integration, ensuring that the vibration reduction table effect is always in the best state. In the future, as precision manufacturing technology evolves to higher levels, vibration reduction platform technology will also continue to upgrade, providing a solid environmental guarantee for the development of nanoscale imaging and measurement technology.
