We report the selective excitation of the flexural modes of microcantilevers in aqueous solutions, by applying the photothermal excitation technique. The experiments show that a particular vibration mode can be efficiently excited by focusing the intensity-modulated laser beam on regions of high curvature of the vibration shape. In addition, the resulting resonant peaks in liquid appear distorted by an amplitude component that decreases with the frequency. This distortion produces a shift of the resonance to lower frequencies. A theoretical model based on the transformation of optical energy into mechanical energy via an intermediate thermal stage is proposed to interpret the experimental results. The theory shows that the driven oscillation of the cantilever depends on the curvature of the eigenmode at the excitation position and the heating induced by the excitation laser, which decreases with the frequency. The results reported here set the basis for efficient excitation of high vibration modes in liquids and for optimized design of optically driven microresonators.
Skip Nav Destination
Article navigation
15 June 2006
Research Article|
June 21 2006
Photothermal excitation of microcantilevers in liquids
D. Ramos;
D. Ramos
BioNanoMechanics Laboratory
, National Centre for Microelectronics, IMM-CNM, CSIC, Isaac Newton 8 (PTM), Tres Cantos 28760, Madrid, Spain
Search for other works by this author on:
J. Tamayo;
J. Tamayo
a)
BioNanoMechanics Laboratory
, National Centre for Microelectronics, IMM-CNM, CSIC, Isaac Newton 8 (PTM), Tres Cantos 28760, Madrid, Spain
Search for other works by this author on:
J. Mertens;
J. Mertens
BioNanoMechanics Laboratory
, National Centre for Microelectronics, IMM-CNM, CSIC, Isaac Newton 8 (PTM), Tres Cantos 28760, Madrid, Spain
Search for other works by this author on:
M. Calleja
M. Calleja
BioNanoMechanics Laboratory
, National Centre for Microelectronics, IMM-CNM, CSIC, Isaac Newton 8 (PTM), Tres Cantos 28760, Madrid, Spain
Search for other works by this author on:
a)
Author to whom correspondence should be addressed; electronic mail: [email protected]
J. Appl. Phys. 99, 124904 (2006)
Article history
Received:
October 03 2005
Accepted:
March 28 2006
Citation
D. Ramos, J. Tamayo, J. Mertens, M. Calleja; Photothermal excitation of microcantilevers in liquids. J. Appl. Phys. 15 June 2006; 99 (12): 124904. https://doi.org/10.1063/1.2205409
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
A step-by-step guide to perform x-ray photoelectron spectroscopy
Grzegorz Greczynski, Lars Hultman
Scaling effects on the microstructure and thermomechanical response of through silicon vias (TSVs)
Shuhang Lyu, Thomas Beechem, et al.
Related Content
Dimension dependence of the thermomechanical noise of microcantilevers
J. Appl. Phys. (January 2006)
Low frequency photothermal excitation of AFM microcantilevers
J. Appl. Phys. (June 2023)
Real-time profile of microcantilevers for sensing applications
Appl. Phys. Lett. (November 2005)
High efficiency laser photothermal excitation of microcantilever vibrations in air and liquids
Rev. Sci. Instrum. (January 2011)
Standoff detection of explosive residues using photothermal microcantilevers
Appl. Phys. Lett. (April 2008)