Fluid load augmented micro balance

  • Keshava Praveena Neriya Hegade
  • Muthukumaran PackirisamyEmail author
  • Rama Bhat
Technical Paper


Micro-cantilever based micro weighing balance was studied using polydimethylsiloxane micro-cantilever beam and water droplet. In this system, micro-cantilever beam acts as spring balance while the droplet acts as weight. Initially, tip defection of cantilever beam under the body load provided by water droplets of sizes 4, 5, 6 and 7 μl were found experimentally. For this study, droplets were placed at dimensionless length ξ = 0.8 from the clamped end. Fluid load augmentation was studied by studying the tip deflection of the beam with droplet under flow velocities between 0.75 and 1.5 m/s. A mini wind tunnel is used to provide fluid load with wind flow occurring along the length of the beam. Experimental results show an increase in tip deflection with flow velocity, suggesting the phenomena of fluid load augmentation. In addition to experimental results, this paper presents details on modelling of natural frequency of the micro-cantilever beam with added mass using Rayleigh’s energy method.



The financial supports from NSERC and CuRC research grants of M. Packirisamy and NSERC Grant of R. B. Bhat are acknowledged

Compliance with ethical standards

Conflict of interests

The authors declare no conflict of interests.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Optical Bio-Microsystems Laboratory, Department of Mechanical and Industrial EngineeringConcordia UniversityMontrealCanada

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