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Measurement of the Earth Tides with a Diamagnetic-Levitated Micro-Oscillator at Room Temperature.
Leng, Yingchun; Chen, Yiming; Li, Rui; Wang, Lihua; Wang, Hao; Wang, Lei; Xie, Han; Duan, Chang-Kui; Huang, Pu; Du, Jiangfeng.
Afiliación
  • Leng Y; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
  • Chen Y; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
  • Li R; CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.
  • Wang L; CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.
  • Wang H; Hefei National Laboratory, Hefei 230088, China.
  • Wang L; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
  • Xie H; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
  • Duan CK; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
  • Huang P; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
  • Du J; CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.
Phys Rev Lett ; 132(12): 123601, 2024 Mar 22.
Article en En | MEDLINE | ID: mdl-38579231
ABSTRACT
The precise measurement of the gravity of Earth plays a pivotal role in various fundamental research and application fields. Although a few gravimeters have been reported to achieve this goal, miniaturization of high-precision gravimetry remains a challenge. In this work, we have proposed and demonstrated a miniaturized gravimetry operating at room temperature based on a diamagnetic levitated micro-oscillator with a proof mass of only 215 mg. Compared with the latest reported miniaturized gravimeters based on microelectromechanical systems, the performance of our gravimetry has substantial improvements in that an acceleration sensitivity of 15 µGal/sqrt[Hz] and a drift as low as 61 µGal per day have been reached. Based on this diamagnetic levitation gravimetry, we observed Earth tides, and the correlation coefficient between the experimental data and theoretical data reached 0.97. Some moderate foreseeable improvements can develop this diamagnetic levitation gravimetry into a chip size device, making it suitable for mobile platforms such as drones. Our advancement in gravimetry is expected to facilitate a multitude of applications, including underground density surveying and the forecasting of natural hazards.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos