Cantilever sensors consisting of only a piezoelectric layer express both bending and torsional modes near ∼25 kHz that persist with reasonable Q-values (∼15) in liquids of high viscosity (>100 cP). Responses of both bending and torsional modes in liquids (1−1019 cP) were measured simultaneously. The bending mode response was more sensitive to mass-change effects than the torsional mode, and the response in liquids <70 cP matched theoretical values within 0.9%. At 1019 cP the bending mode response was within 10.4% of theory. The bending and torsional modes in PEMC can potentially be used simultaneously for bio-chemical sensing in very viscous samples.
REFERENCES
1.
C.
Ziegler
, Anal. Bioanal. Chem.
379
, 946
(2004
).2.
K. M.
Goeders
, J. S.
Colton
, and L. A.
Bottomley
, Chem. Rev.
108
, 522
(2008
).3.
K.
Rijal
, and R.
Mutharasan
, Anal. Chem.
79
, 7392
(2007
).4.
K.
Rijal
, and R.
Mutharasan
, Langmuir
23
, 6856
(2007
).5.
J. E.
Sader
, J. Appl. Phys.
84
, 64
(1998
).6.
C. A.
Van Eysden
, and J. E.
Sader
, J. Appl. Phys.
101
, 044908
(2007
).7.
M. T.
Clark
, J. E.
Sader
, J. P.
Cleveland
, and M. R.
Paul
, Phys. Rev. E
81
, 046306
(2010
).8.
T. L.
Wilson
, G. A.
Campbell
, and R.
Mutharasan
, Sens. Actuators, A
138
, 44
(2007
).9.
N.
McLoughlin
, S. L.
Lee
, and G.
Hahner
, Appl. Phys. Lett.
89
, 184106
(2006
).10.
A.
Agoston
, F.
Keplinger
, and B.
Jakoby
, Sens. Actuators, A
123
, 82
(2005
).11.
N.
Ahmed
, D. F.
Nino
, and V. T.
Moy
, Rev. Sci. Instrum.
72
, 2731
(2001
).12.
C.
Bergaud
, and L.
Nicu
, Rev. Sci. Instrum.
71
, 2487
(2000
).13.
C.
Castille
, I.
Dufour
, and C.
Lucat
, Appl. Phys. Lett.
96
, 154102
(2010
).14.
N.
Mullin
, and J.
Hobbs
, Appl. Phys. Lett.
92
, 053103
(2008
).15.
H.
Sharma
, R.
Lakshmanan
, B. N.
Johnson
, and R.
Mutharasan
, Sens. Actuators B.
153
(1
), 64
(2010
).16.
J. W.
Weaver
, S. P.
Timoshenko
, and D. H.
Young
, Vibration Problems in Engineering
, 5th ed. (Wiley and Sons
, New York
, 1990
).17.
A. W.
McFarland
, M. A.
Poggi
, L. A.
Bottomley
, and J. S.
Colton
, J. Micromech. Microeng.
15
, 785
(2005
).18.
C. P.
Green
, and J. E.
Sader
, J. Appl. Phys.
92
, 6262
(2002
).19.
C. A.
Van Eysden
, and J. E.
Sader
, J. Appl. Phys.
100
, 114916
(2006
).20.
E. W.
Flick
, Industrial Solvents Handbook
, 5th ed. (William Andrew Publishing/Noyes
, Park Ridge
, 1998
).21.
B. N.
Johnson
, and R.
Mutharasan
, Rev. Sci. Instrum.
81
, 125108
(2010
).© 2011 American Institute of Physics.
2011
American Institute of Physics
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