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Cryogenic Probe Stations
sophisticated multi-degree-of-freedom solutions for transport measurements
attocube’s probe stations are known for their modularity and flexibility, and
can be customized to the needs of the user. At the heart of every probe station,
attocube’s nanopositioners perform the task of positioning and aligning the
probe tips with highest accuracy and reproducibility. In combination with
the outstanding design of our probe stations, this allows for a variety of ul-
tra-stable electrical and mechanical measurements over a wide temperature
and magnetic field range. Up to four three-axis probe heads can be operated
simultaneously while a CCD camera on top of the instrument records the precise
position of each probe tip.
attoCPS I
In the attoCPS I probe station, four DC, HF or optical fiber probes can be posi-
tioned accurately on the sample surface or contact pads. Each equipped with
a travel range of several millimeters in (x,y,z). The sample is mounted onto
a sample holder which enables convenient additional contacting with high
frequency coaxial cables if desired. This innovative system enables multiple
device testing within one cooling cycle, supporting our customers to produce
scientific results reliably and time efficiently.
attoCPS II
Illustration of a customized probe station applying
two HF probes and one Scanning Optical Near-Field
(SNOM) tip.
In contrast to the attoCPS I with its fixed sample configuration, the attoCPS II
offers the possibility to move both the sample and up to four probe tips simul-
taneously and independently in xyz direction. This setup is particularly useful
for multiple device testing with identical contact pad spacing. The probe tips
have to be adjusted to match the contact pad pattern only once. For measure-
ments on a subsequent sample, the sample holder is simply moved from one de-
vice to the next, while keeping the probe tips at their intermutual spacing. This
allows time efficient testing of multiple devices within one cooling cycle.
CCD image showing the contact pads (footprint: 50 x
50 μm²) of the sample and one HF probe.
Close-up photo of two DC probes.