Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences · 2018 · 19 citations · 32 references
EngineeringAstronomyMechanical EngineeringInstrumentationMicroelectromechanical SystemsSensorsGravitational WavesGravity MeasurementsGravity SurveyingGravity WavesMicroelectromechanical SensorsTide Measurement InstrumentsEarth Tide MeasurementsEarth TidesGravimetric MeasurementGravitational Field MeasurementGravitational Wave AstronomyGravitational Wave DetectionMeasurementPortable Instrument Design
A microelectromechanical system (MEMS) gravimeter has been manufactured with a sensitivity of 40 ppb in an integration time of 1 s. This sensor has been used to measure the Earth tides: the elastic deformation of the globe due to tidal forces. No such measurement has been demonstrated before now with a MEMS gravimeter. Since this measurement, the gravimeter has been miniaturized and tested in the field. Measurements of the free-air and Bouguer effects have been demonstrated by monitoring the change in gravitational acceleration measured while going up and down a lift shaft of 20.7 m, and up and down a local hill of 275 m. These tests demonstrate that the device has the potential to be a useful field-portable instrument. The development of an even smaller device is underway, with a total package size similar to that of a smartphone.This article is part of a discussion meeting issue 'The promises of gravitational-wave astronomy'.
32
Observation of Gravitational Waves from a Binary Black Hole Merger
B. P. Abbott, R. Abbott, T. D. Abbott et al. · Physical Review Letters · 2016 · 14.3K citations · Full text
Natural Sciences, Astronomy, Physics +15
Recent advances in nonlinear passive vibration isolators
R. A. Ibrahim · Journal of Sound and Vibration · 2008 · 1.2K citations
Measurement of the Earth tides with a MEMS gravimeter
Richard Middlemiss, Antonio Samarelli, Douglas J. Paul et al. · Nature · 2016 · 346 citations · Full text