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Research Papers

Material Dependence of the Contact Behavior of Oscillating Microprobes—Modeling and Experimental Evidence

[+] Author and Article Information
Sebastian Bohm

Technical Physics 1 Group;IMN MacroNano,
Technische Universität Ilmenau,
Max-Planck-Ring 12,
Ilmenau 98693, Germany
e-mail: sebastian.bohm@tu-ilmenau.de

Boris Goj

Micromechanical Systems Group;IMN MacroNano,
Technische Universität Ilmenau,
Max-Planck-Ring 12,
Ilmenau 98693, Germany
e-mail: boris.goj@tu-ilmenau.de

Lars Dittrich

Micromechanical Systems Group;IMN MacroNano,
Technische Universität Ilmenau,
Max-Planck-Ring 12,
Ilmenau 98693, Germany
e-mail: lars.dittrich@tu-ilmenau.de

Lothar Dressler

Micromechanical Systems Group;IMN MacroNano,
Technische Universität Ilmenau,
Max-Planck-Ring 12,
Ilmenau 98693, Germany
e-mail: lothar.dressler@tu-ilmenau.de

Martin Hoffmann

Micromechanical Systems Group;IMN MacroNano,
Technische Universität Ilmenau,
Max-Planck-Ring 12,
Ilmenau 98693, Germany
e-mail: martin.hoffmann@tu-ilmenau.de

1Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received September 16, 2016; final manuscript received December 13, 2016; published online March 2, 2017. Assoc. Editor: Don A. Lucca.

J. Micro Nano-Manuf 5(2), 021002 (Mar 02, 2017) (11 pages) Paper No: JMNM-16-1043; doi: 10.1115/1.4035619 History: Received September 16, 2016; Revised December 13, 2016

Oscillating microprobes avoid high stress and the sticking effect during contact between microprobe and measured surface. The full performance and application scope of oscillating microprobes can be explored and utilized once the reliable prediction of the microprobe contact behavior is understood. Here, an improved contact model considering adhesion forces, surface roughness, and viscoelastic damping for oscillating microprobes is presented and it is validated by exemplary measurements utilizing a uniaxially oscillating electrostatic microprobe. These results show that the nondestructive identification of material classes seems to be feasible by evaluating the phase shift between the sinusoidal signals of sensor and actuator, respectively.

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References

Figures

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Fig. 1

Operation principle of oscillating microprobes for different contact directions

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Fig. 2

Hysteresis in the total contact force indentation curves, F=FH+FDiss=43E*RKd3ed+β dαd˙ed, FH denotes the Hertzian contact force [16,21]

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Fig. 3

Geometric parameters of the Maugis theory according to Ref. [22]

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Fig. 4

Hertzian pressure distribution pH and pressure distribution pFT according to Eq. (6) as function of the radius r

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Fig. 5

(a) Geometric parameters for the description of the contact behavior and (b) exemplary curve progression of the total contact force curve FFT (d)

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Fig. 6

Design of the uniaxial microprobe

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Fig. 7

Sensor head with uniaxial microprobe

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Fig. 8

Sensor circuit of the uniaxial microprobe

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Fig. 9

Experimental setup for the contact measurements

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Fig. 10

Measured and calculated amplitude–frequency characteristic

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Fig. 11

Phase shift between the sensor voltage and the actuator voltage for different measurement object materials

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Fig. 12

Comparison of the simulated and the measured curves

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Fig. 13

Possible application fields of the uniaxial microprobe considering the measurement results

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