Determination of Young's modulus of epoxy coated polyethylene micro-cantilever using phase-shift shadow moiré method

Lim, Jiunn Hsuh; Ratnam, Mani Maran; Azid, Ishak Abdul; Devarajan, Mutharasu

doi:10.1016/j.optlaseng.2011.06.005

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…Recently, we described the possibility of calculating E of polymer films made by layer‐by‐layer deposition of polyelectrolytes (≤20 nm thickness) on the micromechanical cantilever sensor (MCS) . The swelling of polymer films in a solvent vapor environment was transduced into a measurable bending of MCS .…”

Section: Introductionmentioning

confidence: 99%

Young's modulus of plasma‐polymerized allylamine films using micromechanical cantilever sensor and laser‐based surface acoustic wave techniques

Toda

Miyake

Chu

et al. 2018

Plasma Processes & Polymers

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Mechanical properties of ultra‐thin organic films are fundamentally important in coating applications. Micromechanical cantilever sensor (MCS) and laser‐based surface acoustic wave (LA‐SAW) techniques were both used to measure Young's moduli (E) of plasma polymerized films at different humidities (H). For plasma polymerized allylamine (ppAA) films deposited at 5 W and 90 W, E of 1400 ± 350 MPa and 110 ± 20 MPa at H between 10 and 40%, and 1070 ± 250 MPa and 32 ± 10 MPa at H between 70 and 80% were measured. The LA‐SAW technique revealed E lower than 60% of that measured by MCS. The difference suggested either an enhanced swelling at the air interface or a gradient of cross‐linking density.

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Section: Introductionmentioning

confidence: 99%

Young's modulus of plasma‐polymerized allylamine films using micromechanical cantilever sensor and laser‐based surface acoustic wave techniques

Toda

Miyake

Chu

et al. 2018

Plasma Processes & Polymers

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“…Phase-shift shadow Moiré optical methods have also been employed to recover Young's moduli of composite systems composed of various epoxy coated polyethylene terephthalate (PET) micro-cantilevers [10].…”

Section: Introductionmentioning

confidence: 99%

Identification of the mechanical moduli of flexible thermoplastic thin films using reflected ultrasonic waves: Inverse problem

et al. 2017

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A method for the identification of the mechanical moduli and density of flexible, supple thermoplastic thin films placed on elastic substrates using ultrasonic waves has been developed. The composite medium immersed in a fluid host medium (water) was excited using a 50MHz transducer operating at normal incidence in reflection mode. Inverse problems involving experimental data pertaining to elastic wave propagation in the thin films on their substrates and theoretical fluid-solid interaction models for stratified media using elasticity theory were solved. Two configurations having different interface boundary conditions (BC) were modeled, transverse slip for the sliding contact interface in the case where the thin films were placed on the substrate without bonding; a bonded interface condition. The inverse problem for the recovery of the mechanical parameters were solved for the thin films under the bonded and slip BCs. Substrates made of different elastic materials having different geometries were also evaluated and their advantages discussed.

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“…Many methods are used for measurements of mechanical properties such as nano-indentation, [1][2][3][4][5][6] X-ray diffraction, 7,8) laser acoustic wave propagation, [9][10][11][12] and cantilevers. [13][14][15][16][17][18] Furthermore it is known that thin films may have mechanical properties, as Young's modulus and thermal expansion, which are different from the bulk value of the same material. 19) Furthermore mechanical properties depend on the film thickness, film preparation methods and environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Effective Young's Modulus Measurement of Thin Film Using Micromechanical Cantilever Sensors

Itakura¹,

Toda²,

Miyake³

et al. 2013

Jpn. J. Appl. Phys.

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Determination of mechanical properties of thin films, such as the Young's modulus, is of fundamental importance when the films are used for coating or for materials of microelectromechanical systems (MEMS). We show a simple method to calculate the effective Young's modulus of thin films by comparing lateral and vertical expansions. The stress of the film due to expansion in the lateral direction was measured using micromechanical cantilever sensor (MCS) techniques which allow for a calculation of the lateral expansion ratio of the film. The vertical expansion was measured using ellipsometry, surface plasmon resonance (SPR) and other film thickness meters. There is no limitation by the method for a measurement of Young's modulus, even if soft and thin polymer film. We detected the influence of humidity on effective Young's modulus of a polymer material by the method, as an example.

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Determination of Young's modulus of epoxy coated polyethylene micro-cantilever using phase-shift shadow moiré method

Cited by 11 publications

References 21 publications

Young's modulus of plasma‐polymerized allylamine films using micromechanical cantilever sensor and laser‐based surface acoustic wave techniques

Young's modulus of plasma‐polymerized allylamine films using micromechanical cantilever sensor and laser‐based surface acoustic wave techniques

Identification of the mechanical moduli of flexible thermoplastic thin films using reflected ultrasonic waves: Inverse problem

Effective Young's Modulus Measurement of Thin Film Using Micromechanical Cantilever Sensors

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