A piezoelectrically actuated linear rheometer for determining the properties of viscoelastic biomaterials with a thin fluid film coating

Author

Parsons, J.W. ; Coger, R.N.

Author_Institution

Dept. of Mech. Eng., North Carolina Univ., Charlotte, NC, USA

Volume

2

fYear

1999

fDate

36434

Abstract

A new type of rheometer, capable of determining the viscoelastic properties of hydrated biomaterials, has been designed. The key features of the design are its ability to test small sample volumes and to retain the presence of a hydrating layer. The rheometer uses a piezoelectric actuator and sensor to induce an oscillatory stress in the gel and to measure the corresponding strain. The efficacy of the design is confirmed using experimental results and a finite element model

Keywords

atomic force microscopy; biomedical materials; biorheology; elastic moduli measurement; finite element analysis; gels; piezoelectric actuators; strain measurement; viscoelasticity; AFM cantilever; PVDF cantilever; biogels; design efficacy; finite element model; hydrated biomaterials; linear rheometer; loss moduli; oscillatory stress; piezoelectric actuator/sensor; piezoelectrically actuated; small sample volumes; storage moduli; thin fluid film coating; viscoelastic biomaterial properties; Attenuation; Elasticity; Equations; Finite element methods; Frequency; Material storage; Stress; Testing; Viscosity; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint

Conference_Location

Atlanta, GA

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.803988

Filename

803988