A technique for controlling the tip–sample distance in near-field optical microscopes is presented. It consists of mechanically exciting a fiber tip inserted without any adhesive between the two prongs of a high -piezoelectric tuning fork. The detection of the shear forces is classically achieved by measuring the decrease of the dithering amplitude when the tip approaches the surface. This simple setup greatly simplifies tip replacement and its resonance frequency tuning.
REFERENCES
1.
E.
Betzig
, M.
Isaacson
, and A.
Lewis
, Appl. Phys. Lett.
51
, 2088
(1987
).2.
E.
Betzig
, P. L.
Finn
, and J. S.
Weiner
, Appl. Phys. Lett.
60
, 2484
(1992
).3.
R.
Toledo-Crow
, P. C.
Yang
, Y.
Chen
, and M.
Vaez-Iravani
, Appl. Phys. Lett.
60
, 2957
(1992
).4.
5.
6.
7.
8.
J.
Barenz
, O.
Hollricher
, and O.
Marti
, Rev. Sci. Instrum.
67
, 1912
(1996
).9.
A.
Dräbenstedt
, J.
Wrachtrup
, and C.
von Borczyskowski
, Appl. Phys. Lett.
68
, 3497
(1996
).10.
11.
12.
A. Bouhelier, S. Davy, F. Jeunet, E. Galette, V. Schwartz, M. Spajer, D. Courjon, C. Bainier, P. Blind, and P. Augereau, Mecatronics (Université de Franche-Comté, Besançon, France, 1996), Vol. 1, pp. 281–284.
13.
Y.
Chuang
, C.
Wang
, J.
Huang
, and C.
Pan
, Appl. Phys. Lett.
69
, 3312
(1996
).14.
15.
M.
Spajer
, O.
Bergossi
, and M.
Guignard
, Opt. Commun.
106
, 139
(1994
).16.
O.
Bergossi
, M.
Spajer
, and P.
Schiavone
, Ultramicroscopy
61
, 241
(1995
).
This content is only available via PDF.
© 1998 American Institute of Physics.
1998
American Institute of Physics
You do not currently have access to this content.
