Scanning Tunnel Microscopy
Scanning Tunnel Microscopy (STM) is the earliest technique that was developed in the scanning probe microscopy (SPM) area. It generates imaging surfaces with atomic resolution, which is ~ 0.1 nm in lateral and ~ 0.01 nm in depth. The principle of the STM is based on quantum tunneling. When conducting measurements, a conducting sharp tip as the probe is brought very close to the surface. In the meantime, a voltage bias is applied between the tip and sample to make electrons tunnel through space. The resulting image is the change in the tip height as the tip is scanned over the sample surface. Clean sample surface and tip, and low electronic and physical noise are required for high-resolution STM imaging. The STM can be widely used in UHV or any other gas or liquid ambients from the temperature of ~ 0K up to 1300K.
Customer References:
Shiwei Wu, Collaborative Innovation Center of Advanced Microstructures, Fudan University, China: Review of Scientific Instruments 87, 063701 (2016)
George Nazin, Department of Chemistry, University of Oregon, USA: Review of Scientific Instruments 85, 103704 (2014)
Wilson Ho, Department of Physics & Astronomy, University of California Irvine, USA: Review of Scientific Instruments 70, 137 (1999)
OEM: RHK Technologies, Commercial Cryo-SPM’s
Related Cryostats:
X-20B ULV for UHV
Ultra low vibrations and ultra high vacuum
System can be baked out to 200 C
| Cryostat Model | Type |
|---|---|
| CS202-DMX-20B | CCR |
| CS204-DMX-20B | CCR |
| CS210-GMX-20B | CCR |
LT3
Atomic resolution is achieved through a series of matrix heat exchangers
Coaxial shield flow transfer line ensures liquid at the tip and efficient flow
LT4
All-purpose, low cost flow cryostat
Maintains the high cooling power of the LT3
UHV option available
| Cryostat Model | Type |
|---|---|
| LT4 | Flow |