What Are The Applications Of Cantilever Positioners?

Nov 04, 2023 Leave a message

From research labs to factories, cantilever positioners play an important role in creating precise and flexible positioning systems. A cantilever positioner consists of a fixed base and an extending arm that can be moved with high accuracy in multiple degrees of freedom. The absence of a fulcrum or pivot point allows the positioning tip to have high stability and eliminates errors from mechanical slack or hysteresis. Let's examine some of the diverse applications taking advantage of the unique advantages of cantilever positioners.

 

Microscopy Samples

 

In microscopy, cantilever stages enable nanometer-level positioning of specimens in 3D space relative to microscope objectives. This allows focusing on specific areas of interest and scanning the sample to construct detailed images. Biological samples like cells and tissues can be examined at very high resolutions by moving the stage in small increments. The open end of cantilevers provides flexibility to mount and image a wide range of sample sizes and containers.

 

Semiconductor Manufacturing

 

During semiconductor manufacturing, silicon wafers must be positioned precisely for processing steps like photolithography, inspection, and transfer between stations. Cantilever positioners provide smooth motion and nanometer-level repeatability for positioning wafers on process equipment. The cantilevers can be automated or manually adjusted by operators. Cantilever arms are available in different lengths to accommodate loading of wafer cassette containers.

 

Laser Optics

 

Lasers rely on positioning optics like mirrors and lenses to aim and focus the laser beam. Cantilever mounts allow tip, tilt and piston positioning in multiple axes to correctly steer the laser. The open architecture and wide range of motion of cantilevers enable convenient adjustment of optic components. Cantilever positioners are used for alignment of lasers in research, industrial and medical applications.

 

Sensors & Probes

 

Sensitive instruments like scanning probes, inductive sensors and microphones require careful positioning without introducing vibration. The cantilever’s static design and stiffness isolate the probe from environmental noise. The fine positioning control enables scanning and mapping of surfaces. Probes can also be positioned in hard-to-reach spots. Applications range from coordinate measurement, surface metrology and non-destructive evaluation.

 

Lab Automation

 

Lab automation is a rapidly growing field that leverages technology to streamline laboratory processes, increase efficiency, and reduce human error. Automated lab systems often use cantilever positioners to transfer plates, slides, and fluid samples between processing stations like readers, washers, and incubators.

 

Cantilever positioners are a key component of these systems. They allow vertical motion and angle tilting to handle the various containers and pipetting actions needed for liquid transfers. This flexibility is crucial for handling delicate samples and performing precise operations.

 

The open clearance provided by cantilevers is another significant advantage. It enables easy integration into assembly line workflows, allowing for a seamless transition between different stages of the process. This can greatly increase the speed and efficiency of lab work, making it possible to process a high volume of samples in less time.

 

One of the most important features of automated lab systems is their ability to save and repeat positions accurately throughout experiments. This is crucial for ensuring consistency and reliability in experimental results. By automating this process, labs can eliminate the variability that comes with manual handling, leading to more accurate and reliable results.

 

Moreover, automation reduces the risk of contamination that can occur with manual handling, leading to more accurate test results. It also frees up lab personnel to focus on more complex tasks, increasing overall productivity.

 

In addition to these benefits, lab automation also has the potential to revolutionize fields like drug discovery and genetic research. By automating routine tasks, researchers can focus on data analysis and interpretation, accelerating the pace of scientific discovery.

 

In conclusion, cantilever positioners in automated lab systems represent a significant advancement in laboratory technology. They offer increased efficiency, precision, and reliability, making them an invaluable tool in modern labs.

 

Photonics Assembly

 

Cantilever stages assist precise alignment and assembly of optical components and photonic devices. The multi-axis adjustability is used to actively align lenses, waveguides, lasers, filters and fibers until the optimal light transmission is achieved. Cantilevers provide stability and repeatability for positioning optomechanical assemblies within the nanometer tolerance required.

 

While cantilever positioners are often used in scientific research and specialized instruments, their benefits can be applied to industrial settings like manufacturing, quality inspection and assembly processes that require flexible yet precise motion. The static cantilever design eliminates play and hysteresis which are difficult to control on pivoting positioners. Companies offer cantilever positioners matched to different loads and environments, ranging from miniature stages for compact instruments to large positioners used in solar panel manufacturing. The cantilever's reputation for high performance, reliability and versatility will continue to extend its positioning applications.

 

Xi'an Guosheng Laser Technology Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing, and sales of automatic laser cladding equipment, high-speed laser cladding equipment, laser quenching equipment, laser welding equipment, and 3D printing equipment. Our Cantilever Positioner is cost-effective and sold domestically and abroad. If you're interested in our products, please contact us at bob@gshenglaser.com.

 

References:

 

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J. D. Alonso and M. R. Dougherty, "Operating deflection shapes for a three-dimensional cantilever beam," Journal of Sound and Vibration, vol. 312, no. 4-5, pp. 772-778, 2008. https://doi.org/10.1016/j.jsv.2007.11.049

 

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J. Zhang and W. H. Liu, "Kinematic analysis and stiffness modeling of a multi-axis compliant precision manipulator with lever mechanisms," Precision Engineering, vol. 61, pp. 230-239, 2020. https://doi.org/10.1016/j.precisioneng.2019.11.007

 

W. Yang, G. Y. Gu, L. B. Zhu, and C. Y. Su, "High-speed atomic force microscope based on an ultrasonic cantilever and dynamic PID controller," Microscopy Research and Technique, vol. 66, no. 6, pp. 295-303, 2005. https://doi.org/10.1002/jemt.20189