Beetle Family

Beetle UHV VT STM

The standard in VT STM with the best stability and lowest noise

Beetle UHV VT STM Overview

Based on the field-proven “Johnny Walker” Beetle™ design, RHK’s VT Beetle is the most mechanically and thermally stable of the many variable temperature SPM designs on the market today.  Wide VT operation from 25 K (LHe) to 1500 K, the Beetle STM systems have been delivering the highest quality low current imaging for over a decade. Flexible operating modes combined with our low noise, high bandwidth control electronics provide the user with an unparalleled performance STM system package. Our patented tip exchange system provides simple tip exchange along with in-situ tip conditioning on VT systems or with the optional tip heating module.

Beetle STM Quick Specifications

  • Low Current Imaging – < 1pA at 5kHz bandwidth
  • High Speed Scanning – 3 sec/frame
  • Coarse XY positioning at least 5 mm x 5 mm
  • Scan range of at least 5 micron x 5 micron XY
  • Minimum resolution of 0.5Å (X, Y) and 0.1Å (Z)
  • Thermal drift <1 Å/min
  • Sample temperatures: from 25 K (LHe) to >1500 K; or 100 K (LN2) to >1500 K
  • Sample size 10mm diameter
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Beetle UHV VT STM Gallery

  • Beetle Sample Holder Dimensions

  • Beetle Sample Holder Electrical Contacts identified

  • Beetle Sample Holder Special Ceramic Heater for Use in Reactive Gas

  • Beetle Sample Holder Standard 6 contacts

  • Beetle STM Design Features and Advantages

  • Beetle STM Design Features and Advantages

  • Beetle STM Design Features and Advantages

  • Beetle STM Design Features and Advantages

  • Beetle STM high - low temp images Si7x7

  • Beetle STM Scan Head Detail View

  • Beetle STM Scan Head View

Beetle UHV VT STM Specifics

  • Low Current Imaging – < 1pA at 5kHz bandwidth
  • High Speed Scanning – 3 sec/frame
  • Inherent Mechanical and Thermal Stability due to small mechanical and thermal loop, inherently stiff and compact Beetle design, and symmetrical geometry. Thermal drift <1 Å/min
  • Ideal for spectroscopy and prolonged observation of a particular feature
  • Heating samples has no impact on Scan Tube, eliminating danger of affecting its thermal coefficient and causing drift
  • Beetle design scans more quickly than sample scanners due to fewer restrictions on resonant frequency
  • Coarse XY positioning at least 5 mm x 5 mm
  • Scan range of at least 5 micron x 5 micron XY
  • Minimum resolution of 0.5Å (X, Y) and 0.1Å (Z).
  • Thermal drift <1 Å/min
  • Sample temperatures: from 25 K (LHe) to >1500 K; or 100 K (LN2) to >1500 K
  • Beetle sample holder uniquely provides true and accurate sample temperature measurement via thermocouple in direct contact with sample itself.
  • Sample temperatures from 25 K to >1500 K on SPM sample stage and on manipulator stages in preparation/analysis chambers
  • Sample temperature while imaging: 1000 K for AFM (with new Therma AFM), 1000 K for STM
  • 6 electrical contacts to sample holder (2 for temperature, 2 for heating, 2 for auxiliary use such as BEEM). A single holder conveniently supports all heating and cooling modes – radiative, e-beam, resistive/DC; LN2 and LHe
  • Sample holders also available for Cleaving; delivering RF signal to sample; and heating in reactive gases via Quartz Bulb or Ceramic Button
  • Sample size 10mm diameter
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