atomic force afm microscope
Atomic Force Microscope (AFM), an analytical instrument that can be used to study the surface structure of solid materials, including insulators. It studies the surface structure and properties of a substance by detecting the extremely weak interatomic interaction between the surface of the sample to be tested and a micro-force sensitive element. Will be a pair of weak force extremely sensitive micro-cantilever end fixed, the other end of the small tip close to the sample, then it will interact with it, the force will make the micro-cantilever deformation or movement state changes. When scanning the sample, the sensor can be used to detect these changes, we can get the distribution of force information, so as to obtain the surface morphology of nano-resolution information and surface roughness information.
★ Integrated scanning probe and sample stag enhanced the anti-interference ability.
★ Precision laser and probe positioning device make changing the probe and adjusting the spot simple and convenient.
★ By using the sample probe approaching manner,the needle could perpendicular to the sample scanning.
★ Automatic pulse motor drive control sample probe vertical approaching, to achieve precise positioning of the scanning area.
★ Sample scanning area of interest could freely moved by using the design of high precision sample mobile device.
★ CCD observation system with optical positioning achieves real-time observation and positioning of the probe sample scan area.
★ The design of electronic control system of modularization facilitated maintenance and continuous improvement of circuit.
★ The integration of multiple scanning mode control circuit, cooperate with software system.
★ Spring suspension which simple and practical enhanced anti-interference ability.
| Work mode | FM-Tapping, optional contact, friction, phase,magnetic or electrostatic |
| Size | Φ≤90mm,H≤20mm |
| Scanningrange | 20 mmin XYdirection,2 mm in Z direction. |
| Scanningresolution | 0.2nm in XY direction,0.05nm in Z direction |
| Movementrange of sample | ±6.5mm |
| Pulse width ofthe motor approaches | 10±2ms |
| Image sampling point | 256×256,512×512 |
| Optical magnification | 4X |
| Optical resolution | 2.5 mm |
| Scan rate | 0.6Hz~4.34Hz |
| Scan angle | 0°~360° |
| Scanning control | 18-bit D/A in XY direction,16-bit D/A in Z direction |
| Data sampling | 14-bitA/D,double16-bit A/D multi-channel synchronous sampling |
| Feedback | DSP digital feedback |
| Feedback sampling rate | 64.0KHz |
| Computer interface | USB2.0 |
| Operating environment | Windows98/2000/XP/7/8 |