An optical readout technique has been developed for real-time monitoring of the profile of microcantilever arrays for sensing applications. The technique is based on the automated two-dimensional scanning of a laser beam by using voice-coil actuators. Cantilever profiles are obtained with subnanometer resolution and a processing speed of about ten cantilevers per second. The technique is applied for real-time monitoring of the adsorption of the alkylthiol mercaptohexanol in an aqueous environment by using an array of five microcantilevers. Molecular adsorption produces a cantilever strain that significantly differs from the Stoney’s model. Main strain changes are strongly located near the cantilever clamping.
REFERENCES
1.
N.
Lavrik
, M.
Sepaniak
, and P.
Datskos
, Rev. Sci. Instrum.
75
, 2229
(2004
).2.
R.
Raiteri
, M.
Grattarola M.
, H. J.
Butt
, and P.
Skládal
, Sens. Actuators B
79
, 115
(2001
).3.
L. A.
Pinnaduwage
, A.
Gehl
, D. L.
Hedden
, G.
Muralidharan
, T.
Thundat
, R. T.
Lareau
, T.
Sulchek
, L.
Manning
, B.
Rogers
, M.
Jones
, and J. D.
Adams
, Nature
425
, 474
(2003
).4.
R.
McKendry
, J.
Zhang
, Y.
Arntz
, T.
Strunz
, M.
Hegner
, H. P.
Lang
, M. K.
Baller
, U.
Certa
, E.
Meyer
, H.-J.
Güntherodt
and Ch.
Gerber
, Proc. Natl. Acad. Sci. U.S.A.
99
, 9783
(2002
).5.
L. B.
Sharos
, A.
Raman
, S.
Crittenden
, and R.
Reifenberger
, Appl. Phys. Lett.
84
, 4638
(2004
).6.
G.
Wu
, R. H.
Datar
, K. M.
Hansen
, T.
Thundat
, R. J.
Cote
, and A.
Majumdar
, Nat. Biotechnol.
19
, 856
(2001
).7.
M.
Álvarez
, L. G.
Carracosa
, M.
Moreno
, A.
Calle
, A.
Zaballos
, L. M.
Lechuga
, C.
Martínez-A
, and J.
Tamayo
, Langmuir
20
, 9663
(2004
).8.
B.
Ilic
, Y.
Yang
, and H. G.
Craighead
, Appl. Phys. Lett.
85
, 2604
(2004
).9.
C. A.
Savran
, T. P.
Burg
, J.
Fritz
, and S. R.
Manalis
, Appl. Phys. Lett.
83
, 1659
(2003
).10.
C. A.J.
Putman
, B. G.
De Grooth
, N. F.
Van Hulst
, and J.
Greve
, J. Appl. Phys.
72
, 6
(1992
).11.
S.
Jeon
and T.
Thundat
, Appl. Phys. Lett.
85
, 1083
(2004
).12.
M.
Helm
, J. J.
Servant
, F.
Saurenbach
, and R.
Berger
, Appl. Phys. Lett.
87
, 064101
(2005
).13.
H. P.
Lang
, R.
Berger
, C.
Andreoli
, J.
Brugger
, M.
Despont
, P.
Vettiger
, Ch.
Gerber
, J. K.
Gimzewski
, J. P.
Ramseyer
, E.
Meyer
, and H.-J.
Güntherodt
, Appl. Phys. Lett.
72
, 383
(1998
).14.
T.
Sulchek
, R. J.
Grow
, G. G.
Yaralioglu
, S. C.
Minne
, C. F.
Quate
, S. R.
Manalis
, A.
Kiraz
, A.
Aydine
, and A.
Atalar
, Appl. Phys. Lett.
78
, 1787
(2001
).15.
16.
17.
N.
Guyot
, Y.
Harmand
and A.
Mézin
, Int. J. Solids Struct.
41
, 5143
(2004
).18.
J. E.
Sader
, J. Appl. Phys.
89
, 2911
(2001
).19.
Y.
Zhang
, Q.
Ren
, and Y.
Zhao
, J. Phys. D
37
, 2140
(2004
).© 2005 American Institute of Physics.
2005
American Institute of Physics
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