{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T14:02:35Z","timestamp":1775570555163,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2016,6,6]],"date-time":"2016-06-06T00:00:00Z","timestamp":1465171200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Methods to calculate fluid density and viscosity using a micro-cantilever and based on the resonance principle were put forward. Their measuring mechanisms were analyzed and the theoretical equations to calculate the density and viscosity were deduced. The fluid-solid coupling simulations were completed for the micro-cantilevers with different shapes. The sensing chips with micro-cantilevers were designed based on the simulation results and fabricated using the micro electromechanical systems (MEMS) technology. Finally, the MEMS resonant sensor was packaged with the sensing chip to measure the densities and viscosities of eight different fluids under the flexural and torsional vibrating modes separately. The relative errors of the measured densities from 600 kg\/m3 to 900 kg\/m3 and viscosities from 200 \u03bcPa\u00b7s to 1000 \u03bcPa\u00b7s were calculated and analyzed with different microcantilevers under various vibrating modes. The experimental results showed that the effects of the shape and vibrating mode of micro-cantilever on the measurement accuracies of fluid density and viscosity were analyzed in detail.<\/jats:p>","DOI":"10.3390\/s16060830","type":"journal-article","created":{"date-parts":[[2016,6,6]],"date-time":"2016-06-06T10:47:38Z","timestamp":1465210058000},"page":"830","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["A MEMS Resonant Sensor to Measure Fluid Density and Viscosity under Flexural and Torsional Vibrating Modes"],"prefix":"10.3390","volume":"16","author":[{"given":"Libo","family":"Zhao","sequence":"first","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]},{"given":"Yingjie","family":"Hu","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]},{"given":"Tongdong","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]},{"given":"Jianjun","family":"Ding","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]},{"given":"Xixiang","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]},{"given":"Yulong","family":"Zhao","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]},{"given":"Zhuangde","family":"Jiang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi\u2019an Jiaotong University, Xi\u2019an 710049, Shaanxi, China"}]}],"member":"1968","published-online":{"date-parts":[[2016,6,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Harrison, C., Ryu, S., Goodwin, A., Hsu, K., Donzier, E., Marty, F., and Mercier, B. 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