Viscoelastic mechanical behavior of soft microcantilever-based force sensors

I. Kuan Lin; Yen Ming Liao; Yan Liu; Kuang Shun Ou; Kuo Shen Chen; Xin Zhang

doi:10.1063/1.3056114

Viscoelastic mechanical behavior of soft microcantilever-based force sensors

I. Kuan Lin
, Yen Ming Liao
, Yan Liu
, Kuang Shun Ou
, Kuo Shen Chen
, Xin Zhang

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

Polydimethylsiloxane (PDMS) microcantilevers have been used as force sensors for studying cellular mechanics by converting their displacements to cellular mechanical forces. However, PDMS is an inherently viscoelastic material and its elastic modulus changes with loading rates and elapsed time. Therefore, the traditional approach to calculating cellular mechanical forces based on elastic mechanics can result in errors. This letter reports a more in-depth method for viscoelastic characterization, modeling, and analysis associated with the bending behavior of the PDMS microcantilevers. A viscoelastic force conversion model was developed and validated by proof-of-principle bending tests.

Original language	English
Article number	251907
Journal	Applied Physics Letters
Volume	93
Issue number	25
DOIs	https://doi.org/10.1063/1.3056114
Publication status	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3056114

Cite this

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title = "Viscoelastic mechanical behavior of soft microcantilever-based force sensors",

abstract = "Polydimethylsiloxane (PDMS) microcantilevers have been used as force sensors for studying cellular mechanics by converting their displacements to cellular mechanical forces. However, PDMS is an inherently viscoelastic material and its elastic modulus changes with loading rates and elapsed time. Therefore, the traditional approach to calculating cellular mechanical forces based on elastic mechanics can result in errors. This letter reports a more in-depth method for viscoelastic characterization, modeling, and analysis associated with the bending behavior of the PDMS microcantilevers. A viscoelastic force conversion model was developed and validated by proof-of-principle bending tests.",

author = "Lin, \{I. Kuan\} and Liao, \{Yen Ming\} and Yan Liu and Ou, \{Kuang Shun\} and Chen, \{Kuo Shen\} and Xin Zhang",

note = "Funding Information: We acknowledge partial support from the National Science Foundation under Grant Nos. CMMI 0239163, CMMI-0700688, and CMMI-0826191. Dr. K.-S. Chen would like to acknowledge the support from NSC96-2628-E-006-006-MY3.",

year = "2008",

doi = "10.1063/1.3056114",

language = "English",

volume = "93",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Viscoelastic mechanical behavior of soft microcantilever-based force sensors

AU - Lin, I. Kuan

AU - Liao, Yen Ming

AU - Liu, Yan

AU - Ou, Kuang Shun

AU - Chen, Kuo Shen

AU - Zhang, Xin

N1 - Funding Information: We acknowledge partial support from the National Science Foundation under Grant Nos. CMMI 0239163, CMMI-0700688, and CMMI-0826191. Dr. K.-S. Chen would like to acknowledge the support from NSC96-2628-E-006-006-MY3.

PY - 2008

Y1 - 2008

N2 - Polydimethylsiloxane (PDMS) microcantilevers have been used as force sensors for studying cellular mechanics by converting their displacements to cellular mechanical forces. However, PDMS is an inherently viscoelastic material and its elastic modulus changes with loading rates and elapsed time. Therefore, the traditional approach to calculating cellular mechanical forces based on elastic mechanics can result in errors. This letter reports a more in-depth method for viscoelastic characterization, modeling, and analysis associated with the bending behavior of the PDMS microcantilevers. A viscoelastic force conversion model was developed and validated by proof-of-principle bending tests.

AB - Polydimethylsiloxane (PDMS) microcantilevers have been used as force sensors for studying cellular mechanics by converting their displacements to cellular mechanical forces. However, PDMS is an inherently viscoelastic material and its elastic modulus changes with loading rates and elapsed time. Therefore, the traditional approach to calculating cellular mechanical forces based on elastic mechanics can result in errors. This letter reports a more in-depth method for viscoelastic characterization, modeling, and analysis associated with the bending behavior of the PDMS microcantilevers. A viscoelastic force conversion model was developed and validated by proof-of-principle bending tests.

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ER -

Viscoelastic mechanical behavior of soft microcantilever-based force sensors

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