Vibration isolation analysis for a scanning tunneling microscope
نویسندگان
چکیده
We analyze the efficiency of a vibration isolation system (VIS) for a scanning tunneling microscope as a function of the different parameters involved. The VIS consists of a stack of several metallic plates, separated by rubber elements with known properties. We show three-dimensional graphs obtained for different values of parameters such as rigidity (spring) constant (K), damping constant (C), mass (M), and the number of stages (n). Analyzing the K dependence of the position of the main peaks, we find a parabolic behavior when the damping constant is small, with a slight deviation for larger values.
منابع مشابه
Vibration Isolation for Scanning Tunneling Microscopy
Scanning Tunneling Microscopy measures tunneling current from conducting surfaces. Through analysis, it is possible to make a three dimensional picture accurate on an atomic scale of a surface and probe microscopic phenomenon. The procedure is dependent on the distance between the surface of the microscope tip and the sample surface. High tolerances on a scale less than an angstrom are required...
متن کاملAn ultrahigh vacuum fast-scanning and variable temperature scanning tunneling microscope for large scale imaging.
We describe the design and performance of a fast-scanning, variable temperature scanning tunneling microscope (STM) operating from 80 to 700 K in ultrahigh vacuum (UHV), which routinely achieves large scale atomically resolved imaging of compact metallic surfaces. An efficient in-vacuum vibration isolation and cryogenic system allows for no external vibration isolation of the UHV chamber. The d...
متن کاملNew design of a variable-temperature ultrahigh vacuum scanning tunneling microscope
We present the design of a variable-temperature ultrahigh vacuum ~UHV! scanning tunneling microscope which can be operated between 20 and 400 K. The microscope is mounted directly onto the heat exchanger of a He continuous flow cryostat without vibration isolation inside the UHV chamber. The coarse approach is performed with an inertial slider driven by the same piezo tube that is also used for...
متن کاملA low temperature scanning tunneling microscope designed for imaging molecular adsorbates
We report on the development of a low temperature scanning tunneling microscope (STM) used for imaging molecular adsorbates. The microscope operates near 85 K and features in situ tip and sample exchange. Cooling is accomplished via a clamping mechanism that provides a direct mechanical link between a liquid nitrogen dewar and the STM stage. During imaging, the clamping mechanism is released, a...
متن کاملScanning tunneling microscope measurements of the amplitude of vibration of a quartz crystal oscillator
We report highly accurate measurements of the vibrational amplitude of a transverse shear mode quartz resonator, obtained by directly imaging the surface oscillatory motion with a scanning tunneling microscope. Amplitude measurements, performed over a range of resonator drive levels and quality factors, agree with theoretical predictions to within a factor of two. © 2000 American Institute of P...
متن کامل