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Partial composition and function of portable atomic force microscope
Date: 2025-08-17Read: 1
Portable atomic force microscope is a miniaturized and portable high-resolution scanning detection device that combines the high-resolution imaging technology of atomic force microscope with convenient portability, making it possible to conduct microscopic analysis in on-site or non laboratory environments.
Atomic Force Microscopy (AFM) is a microscope that uses atomic level probes to interact with the surface of a sample to obtain its surface morphology. It uses probes to physically interact with the surface of the sample (such as van der Waals forces, electrostatic forces, etc.), and obtains high-resolution images of the surface morphology based on the displacement of the probe.
The traditional working principle of AFM is to scan the sample surface with a probe, and when the probe comes into contact with the sample surface, the surface force causes the probe to shift. By detecting the offset of the probe, the control system can accurately convert it into surface morphology data, thereby forming images with micrometer or nanometer resolution. AFM can not only be used to observe the surface morphology of samples, but also to measure their physical properties such as hardness, adhesion, elastic modulus, etc.
Portable atomic force microscopeCharacteristics:
1. Miniaturization design: The volume and weight of portable AFM are usually much smaller than traditional AFM, making it easy to carry and operate on site. Usually, this type of device is close in size to a portable computer or handheld device and can be easily placed in a backpack, making it suitable for on-site use.
2. High resolution: Despite its small size, it can still provide images with nanometer level resolution, which makes it comparable to traditional AFM in studying microstructure, surface morphology, and material properties.
3. Easy to operate: Portable AFMs typically have a simplified operating interface and automated control functions, allowing users to quickly get started without complex training. Devices are generally equipped with touch screens or intuitive control interfaces for data collection and analysis.
4. Low power consumption: Compared to traditional AFMs, portable AFMs typically have lower power consumption and are suitable for use in environments without a stable power source, such as in the field, construction sites, or on-site testing.
5. Multi functional applications: Portable AFM can not only perform surface imaging, but also perform various micro tests such as force spectrum measurement and friction force measurement, making it suitable for a variety of different application fields.
Partial components of portable atomic force microscope:
1. Probe system: The probe is a key component of portable AFM, typically in the form of a slender micro needle tip with dimensions ranging from a few nanometers to several hundred nanometers. The probe head will come into contact with the surface of the sample and generate displacement through the action of surface force. The small displacement of the probe is reflected by the laser beam to the photodetector, thereby obtaining surface morphology data.
2. Scanning platform: The scanning platform is the infrastructure that supports samples and probes, and its main function is to achieve relative movement between probes and samples. The scanning platform of portable AFM usually adopts a miniaturized design and can perform precise scanning on the surface of the sample.
3. Controller and electronic system: The control system is the "brain" of the portable AFM, responsible for controlling the scanning speed, direction, and contact force between the probe and the sample. Modern portable AFMs typically use digital control and can be operated through touch screens or specialized software.
4. Display and Data Analysis System: The portable AFM is equipped with a high-resolution display screen, which displays scanning results in real time and provides data analysis functions. Some devices can also be connected via USB or wireless to work with computers or mobile phones for data storage and processing.
5. Battery and power management: Usually equipped with rechargeable batteries, it has a longer working time and is suitable for long-term on-site testing work. The battery management system can intelligently adjust power consumption and extend the service life of devices.