Photonics.com - April 2019
Tabletop Vibration Isolation Platform
INGLEWOOD, Calif., April 19, 2019 — The Negative-Stiffness tabletop vibration isolation platform from Minus K Technology Inc. is a thin, low-height model CT-1 passive isolator for low-frequency vibration isolation in critical micro- and nanomicroscopy applications.
The passive tabletop unit is 2¼ in. in height, delivering ½-Hz vertical natural frequency, and 2- to 2¼-Hz horizontal natural frequencies — considerably more low-hertz vibration isolation performance compared to air tables and active systems. Negative-Stiffness isolators employ a unique and completely mechanical concept in low-frequency vibration isolation. They do not require electricity or compressed air, and there are no motors, pumps, or chambers.
The transmissibility of the CT-1 is substantially improved over air and active isolation systems. When adjusted to ½-Hz vertical natural frequency, the CT-1 Negative-Stiffness isolator achieves approximately 93% isolation efficiency at 2 Hz; 99% at 5 Hz; and 99.7% at 10 Hz.