Improving environmental noise suppression for micronewton force sensing based on electrostatic by injecting air damping

Zheng, Yelong; Song, Le; Hu, Gang; Zhao, Meirong; Tian, Yanling; Zhang, Zihui

doi:10.1063/1.4871551

Cited by 26 publications

(13 citation statements)

References 18 publications

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“…The gold-painting cantilever and electrode make up a parallel plate capacitor. Based on the principle of virtual work, [18][19][20] electrostatic force F e would be generated supplied by DC voltage, U s , by Eq. (2):…”

Section: Principle Of the Optical Lever Calibrationmentioning

confidence: 99%

Measurement of interaction between water droplets and curved super-hydrophobic substrates in the air

et al. 2018

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Reversible switch between underwater superaerophilicity and superaerophobicity on the superhydrophobic nanowire-haired mesh for controlling underwater bubble wettability AIP Advances 8, 045001 (2018); https://doi.org/10.1063/1.5018864The effect of surface wettability on the performance of a piezoelectric membrane pump AIP Advances 8, 045010 (2018) The interaction force is very important in the study of the contact process of droplets and super-hydrophobic substrates. Accurate interaction force measurement in the air has far-reaching impact on industrial production and biomimetic field. However, limited by the evaporation of small droplets, interaction force can only be measured in the liquid by AFM and other devices. A millimetric cantilever was used to make it possible to measure the interaction between droplets and super-hydrophobic substrates in the air. The optical lever was calibrated with the electrostatic force. The super-hydrophobic substrates were fabricated using nano particles and copper grids. We finally acquired the interaction force and wetting time between the droplet and super-hydrophobic substrates with different grid fractions and similar contact angle. The results showed that the interaction force decreased with the increase of the grid fraction. These would open a new way of understanding the mechanism of hydrophobic. © 2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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Section: Principle Of the Optical Lever Calibrationmentioning

confidence: 99%

Measurement of interaction between water droplets and curved super-hydrophobic substrates in the air

et al. 2018

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“…The measurement of micro/nanoforces is of great importance in both science and engineering [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. It is useful in the fields of precision instruments, biology [16,17], magnetic field distributions [18], distance measurement [19], and tribological properties of materials [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…In this study, the stiffness of AFM cantilever is calibrated by an electrostatic system [2,9] using the force-displacement curve. In general, for microforce measurements, the signal would be drowned in noise and cannot be measured accurately.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Electrostatic Force System Based on Newton Interpolation Method

et al. 2018

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The measurements of micro/nanoforces are of great importance in both science and engineering. We developed a traceable system for micro/nanoforces based on electrostatic force using two electrodes. Noises (creep, ground vibration, and airflow) are one of the limitations for force resolution. The forces are distorted by noise and cannot be measured accurately. Although ABA method can be used to eliminate linear creep, it is invalid for nonlinear noise. In this paper, a new method known as the Newton interpolation method (NIM) has been adopted in capacitance gradient and the calibration of cantilever stiffness to reduce the effect of nonlinear noise. The results show that the capacitance gradient, with a relative standard deviation of 0.004%, is stable and has good repeatability. The stiffness of cantilever was measured using electrostatic force. The typical value of stiffness ranged from 5.1 to 48 N/m. The relative standard deviation was small, i.e., less than 0.6% owing to Newton interpolation method. These results show that our system is very stable and repeatable. This research may assist in the designing of force measurement systems based on electrostatic force.

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“…The small force measurement is very important with development of the technology [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. It involves precision instrument, MEMS [1,2], biology [12,13], magnetic field distributions [14,15], and tribological properties of material [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…Improving the environment is one way to reduce the effect of noise. Song introduced air damping to improve environmental noise suppression [11]. In this paper, we introduce the differential method force measurement (DFM) to reduce the effect of noise.…”

Section: Introductionmentioning

confidence: 99%

The Differential Method for Force Measurement Based on Electrostatic Force

et al. 2017

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The small force measurement is very important with development of the technology. The electrostatic force is adopted, in which a pair of coaxial cylindrical capacitors generate the electrostatic force when a voltage is applied across the inner and outer electrodes. However, the measured force will be covered by noise (creep, ground vibration, and air flow) and could not be measured accurately. In this paper, we introduce the differential method to reduce the effect of noise. Two identical parallelogram mechanisms (PM) serve as the mechanical spring. One of the PM serves as the reference and another serves as the force sensor. The common signal will be offset, and the difference signal will serve as output. In this way, the effect of the creep will be reduced. The measurement system of the electrostatic force was characterized by applying mechanical forces of known magnitude via loading weights of calibrated masses. The uncertainty from voltage, laser interferometer, and capacitance gradient was estimated. For the measured force, the relative uncertainty is less than 4% (kp=2).

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Improving environmental noise suppression for micronewton force sensing based on electrostatic by injecting air damping

Cited by 26 publications

References 18 publications

Measurement of interaction between water droplets and curved super-hydrophobic substrates in the air

Measurement of interaction between water droplets and curved super-hydrophobic substrates in the air

Optimization of Electrostatic Force System Based on Newton Interpolation Method

The Differential Method for Force Measurement Based on Electrostatic Force

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