SURFACE systems + technology GmbH & Co. KG
SURFACE nanometrology
SURFACE nanometrology News Ticker:
New: Market launch of our sm@rt 500 nanoindenter system. Small in design - big in performance.
SURFACE nanometrology News Ticker:
New: Micro controller controlled Humidity Controller for material science investigations
New: 200 mm automated vacuum chuck for the G200 nanoindenter allows measurement of the entire wafer surface under constant measurement conditions (frame stiffness)
SURFACE PLD Technology News Ticker:
New: Battery Workstation delivered to Cambridge University , GB. It combines three different physical coating processes with a glove box: PLD, sputtering, thermal evaporation and all on a single standard workstation system frame
New: Insitu- Beamline PLD System installed at Karlsruhe KIT allows unique thin film investigations in the synchrotron beam

Temperature Stabilizer for Nanoindentation

Stable instrument temperature with SURFACE <em>stabilizer</em>
Stable instrument temperature with SURFACE stabilizer
Click to enlarge


  • Temperature control in closed indenter housing maintains stable and homogeneous experimental conditions
  • Housing temperature can be set in the range 20…30 °C, resolution 0.01 °C
  • Offset to room temperature 5…10 °C, depending on insulation of housing
  • Temperature stability up to 0.02 °C, during constant external conditions
  • Available as upgrade for many instruments
  • Designed for G200 Nanoindenter from Agilent

Full Control of the Ambient Conditions inside Your Instrument Housing

Nanoindentation measurements are prone to drift issues, because the high accuracy with sub-nanometer resolution of the nanoindentation technique can be adversely affected by the variation of the ambient temperature. Maintaining a higly stabilized laboratory temperature is cumbersome and expensive.

The SURFACE stabilizer overcomes these problems by gentle cooling or heating of the nanoindenter housing to control the indenter temperature. This allows precise and highly repeatable measurements.

Performance of the Temperature Regulation for Varying Room Temperature

Controller enabled

  • Room temperature in laboratory changes due to daylight and weather
  • Temperature of the instrument is set to 22 °C
  • Feedback loop of the controller maintains a stable temperate
  • Temperature deviations below 0.02 °C
  • Large temperature peak: heating up of the laboratory, than ventilating with cool air
  • Room temperature variations are compensated by the stabilizer

Controller disabled

  • Instrument heats up when control is disabled
  • Room temperature variations are apparent in instrument temperature
  • Constant offset in temperature with little damping of temperature modulation
  • Room temperature has to be very stable for precise measurements!
Temperature with stabilizer enabled
Temperature with stabilizer enabled
Click to enlarge
Temperature with stabilizer disabled
Temperature with stabilizer disabled
Click to enlarge

Advantages for Nanoindentation Using the Stabilizer

Temperature and drift rates
Temperature and drift rates
Click to enlarge

The plot on the right shows the instrument temperature and indentation drift rates, first without temperature control, and later with the SURFACE stabilizer temperature control enabled.

No temperature control

  • Room temperature decreases during the night and increases for the day
  • Drift rate is low in the morning, increases during the day to 0.15 nm/s
  • High drift rates in the afternoon!

Temperature control enabled

  • Drift rates well below 0.05 nm/s
  • Average drift: 0.016 nm/s
  • Accurate measurements over the whole day!

Low Scatter in Mechanical Measurements over Extended Time Scales

Measurement stability
Measurement stability
Click to enlarge

The plot shows repeated indentation measurements on fused silica using the stabilizer:

  • Load vs. displacement curves for a Berkovich indenter using a standard indentation method.
  • Displayed are 25 curves, measured over a span of 12 hours.
  • No surface find correction or drift correction has been applied to the data!
  • Very high stability, no additional noise due to the temperature control
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Thursday, 2024-07-18  09:25