independently controlled probes. Each probe is capable of moving on
three axes, with orthogonal travel, and with positioning accuracy of better
than 50 microns to provide a unique platform capable of performing
a wide variety of measurements and experiments, including electrical
characterization of materials and deep level transient spectroscopy.
The patented Joule-Thomson temperature stages provide both a
cryogenic cooling and heating system to provide automated and high precision control of the temperature of the sample stage over a wide
range of temperatures,
There are many options available with the VTMP system including down optics, turbo pumps, a tranission (bottom) window, fiber
optic probe manipulators, and vibration isolation tables. This is truly a system that provides any laboratory with a nearly unlimited range
of experimental capabilities and opportunities.
A tical variable temperature microprobe system includes:
?? High-purity high-pressure gas (tically nitrogen or argon, for Joule-Thomson Cooling only)
?? A filter/dryer apparatus (Joule-Thomson thermal cooling stages only) with high-pressure gas lines
?? Thermal stage for heating and/or cooling
?? A temperature controller
?? 4-Port or 7-Port Microprobe Vacuum Chamber
?? Manipulators for the Vacuum Chamber
?? Vacuum Pump Setup
?? Optional Add-ons like optics, vibration isolation tables, turbo molecular pumps
In addition to the VTMP components, there will also be electronic devices that can be integrated into the A connectors on each
manipulator for sample manipulation or measurement experiments. These are not sold by MMR Technologies - but the end user has
complete flexibility to integrate any signal generating or measuring
device to the manipulators that may be necessary to experimental
requirements.
When the vacuum chamber system is held under a vacuum pressure
of at least 8 milliTorr, the following temperature ranges are available
on the MMR Technologies’ instruments:
?? Room Temperature
?? 70K to 580K*
?? 80K to 580K
?? 70K to 730K*
?? 80K to 730K
?? Room temperature to 730K*
