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| Minus K Technology | |
|---|---|
| Name | Minus K Technology |
| Industry | Precision vibration isolation |
| Founded | 1993 |
| Founder | Keith W. McCormick |
| Headquarters | California, United States |
| Products | Vibration isolators, negative-stiffness mechanisms |
Minus K Technology is a manufacturer and developer of passive vibration isolation systems specializing in negative-stiffness mechanisms for vibration-sensitive equipment. The company supplies isolation platforms and stages for scientific instruments used in laboratories, industrial facilities, and metrology centers worldwide. Its technology has been adopted in settings ranging from semiconductor fabrication to gravitational-wave research.
Minus K Technology was established in 1993 by Keith W. McCormick following research into low-frequency isolation mechanisms. Early commercial work built on collaborations and customer deployments with organizations such as NASA, National Institute of Standards and Technology, and companies in the Silicon Valley ecosystem. Over time the company expanded product lines to serve clients in fields represented by institutions like Caltech, Massachusetts Institute of Technology, and national laboratories including Lawrence Berkeley National Laboratory and Los Alamos National Laboratory. Its timeline parallels developments in precision measurement exemplified by projects involving LIGO Scientific Collaboration and instrumentation used at facilities associated with CERN and major semiconductor firms.
Minus K’s systems are based on the principle of a mechanical negative-stiffness mechanism combined with flexures and springs to achieve very low natural frequencies without active feedback. The approach draws on concepts demonstrated in research by laboratories such as Bell Labs and universities like Stanford University and University of California, Berkeley. Negative-stiffness mechanisms create a controlled region where incremental stiffness is reduced, permitting isolation of vibrations at frequencies below what conventional spring-mass systems provide. Designs incorporate precision-machined components, kinematic mounts, and isolation platforms similar in concept to vibration-control strategies used in cryogenic experiments at Fermilab and optical benches in observatories such as Palomar Observatory. The passive nature contrasts with active isolation systems developed by firms and institutions linked to NASA Jet Propulsion Laboratory and manufacturers serving aerospace programs.
Product families include table-top isolation platforms, multi-axis stages, and floor-mounted isolators tailored for instruments produced by makers like Thermo Fisher Scientific, JEOL, and Asylum Research. Models are specified by payload capacity and nominal natural frequency, with series often used in conjunction with microscopes from Zeiss, Nikon, and Olympus or metrology tools from KLA Corporation and Applied Materials. Customized solutions have been delivered to research groups at Imperial College London, ETH Zurich, and corporate R&D centers of companies such as Intel and Samsung.
Applications span electron microscopy, scanning probe microscopy, microfabrication, interferometry, and precision assembly. Customers include academic departments at institutions like Harvard University, Princeton University, and University of Tokyo as well as industrial research labs at corporations such as IBM, TSMC, and Sony. The technology is used in cleanrooms governed by standards associated with organizations like SEMICON events and in national metrology institutes including Physikalisch-Technische Bundesanstalt and NIST for length and force calibration. It is also found in optical labs supporting projects affiliated with observatories such as Keck Observatory and space-science programs coordinated with European Space Agency facilities.
Minus K products advertise isolation beginning at sub-Hertz natural frequencies with specified transmissibility curves demonstrating high attenuation above resonance. Performance metrics are comparable with passive systems referenced in literature from IEEE conferences and standards discussed at meetings of the Optical Society (OSA). Specifications include payload ranges, lateral and vertical stiffness values, shock load limits, and resonant frequency tuning used in setups at institutions like Brookhaven National Laboratory and corporate qualification labs of Honeywell. Data sheets typically provide transmissibility graphs, settling times, and modeled responses used by engineers at National Institutes of Health and fabrication facilities in evaluating suitability.
Installation practices follow precision-instrument standards used in laboratories at University of California, San Diego and industrial sites managed by firms such as Siemens. Mounting procedures address leveling, payload distribution, and integration with equipment from suppliers like Keysight Technologies and Rohde & Schwarz. Maintenance is largely periodic inspection of mechanical components and recalibration of leveling, similar to care regimes at cleanrooms in facilities operated by ASML and testing labs at Bureau Veritas. For sensitive applications, installations are coordinated with vibration measurement using equipment from companies like Brüel & Kjær and labs employing instruments from Agilent Technologies.
Compared with active isolation systems developed by organizations including Honeywell and research groups at MIT Lincoln Laboratory, Minus K’s passive negative-stiffness approach offers simplicity, lower long-term maintenance, and immunity to electrical or control failures. Relative to pneumatic isolation systems used in conjunction with infrastructure supported by entities such as Airbus and Boeing, the negative-stiffness devices provide superior low-frequency performance without the need for compressed-air supplies. In contrast to magnetic or eddy-current isolation concepts explored at institutions like Los Alamos National Laboratory and corporations such as Magnetic Shield Corporation, the mechanical negative-stiffness technology emphasizes compactness and compatibility with vacuum and cleanroom environments favored by SEMATECH partners.
Category:Vibration isolation Category:Companies established in 1993