The multi-position calibration of the stiffness for atomic-force microscope cantilevers based on vibration

Zheng, Yelong; Song, Le; Hu, Gang; Cai, Xue Feng; Liu, Hongguang; Ma, Jan; Zhao, Meirong

doi:10.1088/0957-0233/26/5/055001

Cited by 17 publications

(15 citation statements)

References 21 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 effect of observation time could be ignored. All underlying instruments had been calibrated at China Metrology Institute [10].…”

Section: Afm Cantilever Stiffness Measurementmentioning

confidence: 99%

“…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%

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 drive shaft is very important in many fields, such as robotic design, force measurement system, and vessel [1][2][3][4][5]. It is an indispensable part of an automotive transmission system with the feature of high rotation speed, and less bracing transmits torque in the operation of a vehicle.…”

Section: Introductionmentioning

confidence: 99%

A novel torque sensor based on the angle of magnetization vector

Huang

Yang

Zhang

et al. 2018

J Wireless Com Network

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Torque is an important parameter of a mechanical power system, which reflects transmission efficiency, transmission reliability, and operating conditions of equipment. Torque monitoring is very important for real-time control and fault diagnosis of mechanical equipment. A torque measurement method based on the theory of magnetic effect is proposed for multipoint torque monitoring in shafting. A model of the deflection angle of the magnetization vector and torque is established based on the theory of magnetic equivalent. A non-contact signal extraction circuit based on hall sensor is designed, a torque loading experimental device is set up, and the torque calibration experiment is completed. The experimental results show that the sensitivity of the torque measurement system is 17.7 mV/Nm, and the maximum nonlinear error is 0.77% full scale. The deflection angle of the magnetization vector has a good linear relation with the torque, which can be measured indirectly by the deflection angle. This method has the advantages of a simple device, strong anti-interference ability, and non-contact measurement. Because it is not necessary to do special treatment to the elastic shaft, it is convenient to form a non-contact torque sensing node, which can realize real-time monitoring of multipoint torque of shafting.

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The multi-position calibration of the stiffness for atomic-force microscope cantilevers based on vibration

Cited by 17 publications

References 21 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

A novel torque sensor based on the angle of magnetization vector

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