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Newsletter June 2020 | Menu of Newsletters

Press Release

New Ultra-Thin CT-2 Low-Frequency Vibration Isolation Platform Adapts to Space Constraints in Critical Micro- and Nano-Microscopy

BETTER horizontal performance and MORE payload ranges

At just 2-1/2 inches in height, while isolating vibrations as low as 1 hertz, the new completely-passive Negative-Stiffness tabletop vibration isolation platform - developed by Minus K Technology - provides the industry's thinnest low-height, low-frequency isolator for optimizing space in critical microscopy and laboratory applications.

Press Release: Minus K Technology has announced the new ultra-thin, low-height model CT-2 passive isolator - the successor to the CT-1 offers better horizontal performance with additional payload ranges for heavier instruments. The completely passive tabletop unit is just 2-1/2 inches in height, yet delivers 1/2 Hz vertical natural frequency, and ~1-1/2 Hz horizontal natural frequencies - considerably more low-frequency vibration isolation performance compared to air tables and active systems. The CT-2 utilizes Minus K's breakthrough patented technology that led to a Laser Focus World 2019 Innovation Award

Minus K CT-1 Ultra-Thin Vibration Isolator
The new Negative-Stiffness CT-2 ultra-thin, low-height, low-frequency vibration isolation platform mitigates space constraints in microscopy applications.

"Vibration isolation options for microscopy instrumentation like scanning probe microscopes, interferometers and stylus profilers have been limited to systems of several inches or more in height, which for many labs can be too tall," said Erik Runge, Director of Engineering at Minus K. "This can make for tight working conditions, which limits employing adequate vibration isolation, and compromising the functionality of the instrumentation. The new CT-2 ultra-thin, low-height isolator solves this problem."

Negative-Stiffness isolators employ a unique and completely mechanical concept in low-frequency vibration isolation. They do not require electricity or compressed air. There are no motors, pumps or chambers, and no maintenance because there is nothing to wear out. They operate purely in a passive mechanical mode. The Negative-Stiffness CT-2 isolator achieves a high level of isolation in multiple directions. It has the flexibility of custom tailoring resonant frequencies vertically.

he transmissibility of the CT-2 is substantially improved over air and active isolation systems. When adjusted to 1/2 Hz vertical natural frequency, the CT-2 Negative-Stiffness isolator achieves approximately 93 percent isolation efficiency at 2 Hz; 99 percent at 5 Hz; and 99.7 percent at 10 Hz.

"With the increased sensitivity in instrumentation, particularly at the nanometer level, more precise vibration isolation technology was needed to deal with lower-frequency vibrations," added Runge. "Negative-Stiffness isolation, integral to the CT-2, was specifically designed to isolate these low-frequency perturbations without having to deal with compressed air or electricity."

Negative-Stiffness vibration isolation systems have become a growing choice for micro and nanotechnology microscopy applications. Not only are they a highly workable vibration solution, but they provide location flexibility and portability that other vibration isolation systems cannot.

About Minus K Technology, Inc.
Minus K® Technology, Inc. was founded in 1993 to develop, manufacture and market state-of-the-art vibration isolation products based on the company's patented negative-stiffness technology. Minus K products are used in a broad spectrum of applications including microscopy, nanotechnology, biological sciences, materials research, semiconductors, zero-g simulation of spacecraft, and high-end audio. The company is an OEM supplier to leading manufacturers of scanning probe microscopes, micro-hardness testers and other vibration-sensitive instruments and equipment. Minus K customers include private companies and more than
300 leading universities and government laboratories in 51 countries.

# # #

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Minus K CT-1 Ultra-Thin Vibration Isolator
Technology is winner of a Laser Focus World Innovator Award

CT-2 Ultra-Thin Low-Height Tabletop Vibration Isolation Platform


BETTER horizontal performance and MORE payload ranges
Successor to CT-1

Minus K CT-1 Ultra-Thin Vibration Isolator

The Compact Tabletop (CT-2) uses Minus K's patented breakthrough technology allowing for the best performance on the market in just a 2.5 inch tall isolation platform. This unit is an upgrade from Minus K's CT-1 and offers better horizontal performance with additional payload ranges for heavier instruments.

This is the thinnest, most portable and most user-friendly isolator ever offered that is capable of delivering this performance.more...:
  • Horizontal frequencies are weight dependent.
  • Horizontal frequency of ~1.25 Hz is achieved at or near the upper limits of the payload range.
  • At the lower payload weights the horizontal frequency will increase.
  • Vertical frequency is tunable to 0.5 Hz throughout the payload range.

Pricing & sizes for CT-2



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Previous Features:

Vibration Criterion (VC) Curves-Lab Analysis

Heavy Payload Systems Vibration Isolation


Bad Vibrations: How to Keep the Effects of Environmental Bounce Out of Your Data

Vibration Isolation & Certifying Bowling Ball Surface Roughness

Press Release: Laser Focus World Innovator Award for
Ultra-Thin, Low-Height CT-1

How They Work>>Negative-Stiffness Vibration Isolators

Microscopy Vibration Isolation

FAQs>>Frequently Asked Questions About Vibration Isolation

Custom Vibration Isolation Systems

Audio Reproduction & Turntable Vibration Isolation

Vibration Isolator Steadies Optics for NASA Telescopes + Vacuum Isolation

Optical-Laser Vibration Isolation + video

Optical-Laser Vibration Isolation + video

Cryostat Vibration Isolation

Nanoindentation & Micro Hardness Testing
Vibration Isolation

Ultra-Low Frequency Vibration Isolation Stabilizes Scanning Tunneling Microscopy

Neuronal Research into Animal Learning, Memory Neuronal Research,
Vibration Isolation Problem & Solution

Sunken Treasure Surrounding The Coldest Cubic Meter In The Universe
Supported by Minus K Vibration Isolators

Lithium Batteries: Superionic Solid Electrolytes for Next-Generation

Spacecraft Vibration Isolation On the Ground

Behavior of a Single Molecule-UCLA's California NanoSystems Institute

Cleanroom Precision Vibration Isolation

Negative-stiffness vibration isolation is utilized to provide ultra-stability for multi-disciplined, nano-level research at UCLA's California NanoSystems Institute.

NASA/JWST Update: Custom James Webb Space Telescope Vibration Isolators Working Well

Audiophile Interests: The Doehmann Helix 1 Turntable

Minus K Technology Educational Giveaway to U.S. Colleges and Universities

Articles In The News


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The MK52


NASA Telescope Project

How Our Isolators Work


Spacecraft Vibration Isolation On the Ground




Minus K Technology Inc., Vibration Isolation Systems
460 Hindry Ave., Unit C | Inglewood, CA 90301 | Tel: 310-348-9656 | Contact Us | www.MinusK.com