New design for a small, highly sensitive gravimeter that can operate stably at room temperature
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(a) Schematic of the diamagnetic levitation gravimeter. (b) Schematic of oscillator displacement detection. The laser beam is focused by a lens. The copper wire is placed on the focal point, where displacement sensitivity in the Z direction is maximum. (c) The measured response curve of voltage to displacement in the Z direction of (b). Credit: Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.132.123601
A team of physicists and engineers affiliated with several institutions in China has developed a new kind of small, highly sensitive gravimeter that can operate stably at room temperature. In their project, reported in the journal Physical Review Letters, the group developed a dual magnet strategy that used a laser to measure changes in gravity.
