Microscope Vibration Isolation | Microscopy
Tables, Platforms, Benchtops & Custom Systems
for *SEM, AFM, TEM, SPM, STM, STEM, NSOM-SNOM
Many of our clients' microscopes have nano and micro vibration
isolation requirements that are unparalleled in the metrology
world (for brain
research and at NASA
as examples). Minus K's negative stiffness and "passive"
verses "active" technology, enables microscopes to achieve
their highest level of performance. Our isolators
systems provide the performance of an ideal bungee system
and the convenience of a bench top system without any of the
problems associated with many of them, including air tables.
From the ubiquitous bungee suspension systems, to large beds
of sand on inner tubes, there have been many attempts at achieving
the ultimate isolation. Air tables have been used with some
success. However, our negative-stiffness isolators provide
superior isolation control and performance while offering
better ease of use and no facility requirements. We even have
the flexibility of custom tailoring resonant frequencies vertically,
horizontally and in tilt to your liking.
The vertical axis can be the most sensitive factor, with
sensitivity to vibrations in the horizontal axes as well.
In order to achieve the lowest possible noise floor (on the
order of an angstrom), isolation is always used. Large air
tables provide decent isolation vertically but are limited
horizontally. Bench top air systems provide limited isolation
vertically and very little isolation horizontally. Bungee
systems are very good isolators but are extremely cumbersome
and somewhat risky to use.
the Microscopy Testimonials.
Small "active" systems (as opposed to our "passive" systems)
are sometimes used. However, those have several drawbacks:
- They are expensive and fragile.
- They are subject to the noise floor of every component
in the entire feedback loop plus AC line noise.
- They have a limited dynamic range, typically only a few
thousandths of an inch. If this is exceeded (very easy to
do) the isolator goes into positive feedback and you have
a very expensive noise generator underneath your SPM.
- They have to be sitting on an infinitely rigid structure
to work at their theoretical best. Obviously, infinitely
rigid structures are not easy to find in most labs. The
result is that the isolator is not always doing what you
think it's doing.
give you the best possible performance in all axes, from high
to low frequency isolation. They provide the performance of
an ideal bungee system and the convenience of a bench top
system without any of the problems associated with any of
them, including air tables. We enable our users to achieve
the highest level of noise performance possible.
*Acronyms for Microscopes & Microscopy:
- SEM: Scanning Electron Microscope
- AFM: Atomic Force Microscope
- SPM: Scanning Probe Microscope
- STM: Scanning Tunneling Microscope
- TEM: Transmission Electron Microscope
- STEM: Scanning Transmission Electron Microscope
- TIRFM: Total Internal Reflection Fluorescence Microscope
- NSOM-SNOM: Near-Field Scanning Optical Microscopy
From Minus K: Microscope vibration isolation table, platform
and bench top products,
systems for anti-vibration and vibration free microscopy.
Those looking for partial solutions such as from materials
or parts involving pads, mounts, mats, rubber feet, etc.,
might look further into our products
for a more thorough solution.