The performance of Zeyou ZEM20 desktop electron microscope is based on its solid hardware design and material selection. The design of each component, from its electronic light source to the signal collection system, affects the final analysis results.

Electronic optical systemIt is the "heart" of electron microscopy. ZEM20 adoptsTungsten filament electron gunAs a source of emission. This is a durable, cost-effective, and stable technical solution. Although its brightness is not as high as field emission guns, for the application scenarios of desktop electron microscopes, its performance is sufficient to meet most daily observation needs, and it has advantages in maintenance costs and ease of operation. The electromagnetic lens inside the tube is made of highly magnetic conductive material, and its design aims to effectively focus the electron beam, reduce aberration, and ensure clear beam spot over a wide magnification range.

Sample Room and Sample StandThe design reflects considerations for user experience. The sample chamber door usually adopts a quick opening design, and the sealing material is durable to achieve faster vacuum pumping speed. internalFive axis electric sample stageIt is one of its highlights. The motor drive ensures smooth sample movement and precise positioning, avoiding vibration caused by manual operation. X. The Y-axis is used to move the field of view, the Z-axis is used to adjust the working distance (WD), and the tilt and rotation functions allow users to observe specific features of the sample from the best angle, such as observing fracture surfaces or performing 3D reconstruction, which is very usefulQuality needs to be balanced with lightweightUseful. Sample table materialAnd for durability, special alloys are usually used.

vacuum systemTo ensure the normal operation of the electron microscopeThe foundation of work. The ZEM20 adopts an integrated vacuum pump assembly, which may include a combination of diaphragm pumps and molecular pumps. This system needs to be able to quickly evacuate the sample chamber from atmospheric pressure to the required high vacuum state for operation, and operate in low vacuum mode

Capable of precise controlIndoor air pressure. Stability of the systemNoise control is one aspect of measuring its design level.

detection systemThe signal conversion efficiency is directly related to the image quality. ZEM20'sSecondary electronic detectorUsually located on the sidewall of the sample chamber, it is used to efficiently collect low-energy secondary electrons excited by the sample surface. itsBackscattered electron detectorIt is located directly below the electron beam, usually in a circular design, to collect high-energy backscattered electrons over the maximum area. The semiconductor material properties of the detector determine its signal-to-noise ratio and response speed.

Hardware care in the instructions for useKeeping the sample room clean is an important part of maintaining hardware in daily use. Avoiding the introduction of dust, grease, or residual samples and regularly following the instructions for maintenance can effectively extend the lifespan of the vacuum pump and sealing ring. When replacing the sample, be careful not to touch or scratch the detector to avoid affecting its performance.