We present an ultrasonic device with the ability to locally remove deposited layers from a glass slide in a controlled and rapid manner. The cleaning takes place as the result of cavitating bubbles near the deposited layers and not due to acoustic streaming. The bubbles are ejected from air-filled cavities micromachined in a silicon surface, which, when vibrated ultrasonically at a frequency of 200 kHz, generate a stream of bubbles that travel to the layer deposited on an opposing glass slide. Depending on the pressure amplitude, the bubble clouds ejected from the micropits attain different shapes as a result of complex bubble interaction forces, leading to distinct shapes of the cleaned areas. We have determined the removal rates for several inorganic and organic materials and obtained an improved efficiency in cleaning when compared to conventional cleaning equipment. We also provide values of the force the bubbles are able to exert on an atomic force microscope tip.
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September 2012
Research Article|
August 21 2012
Localized removal of layers of metal, polymer, or biomaterial by ultrasound cavitation bubbles
David Fernandez Rivas;
David Fernandez Rivas
a)
1
Mesoscale Chemical Systems Group, MESA+ Research Institute
, University of Twente, ME147, P.O. Box 217, 7500AE Enschede, The Netherlands
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Bram Verhaagen;
Bram Verhaagen
2
Physics of Fluids Group, MIRA and MESA+ Research Institutes
, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
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James R. T. Seddon;
James R. T. Seddon
2
Physics of Fluids Group, MIRA and MESA+ Research Institutes
, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
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Aaldert G. Zijlstra;
Aaldert G. Zijlstra
2
Physics of Fluids Group, MIRA and MESA+ Research Institutes
, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
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Lei-Meng Jiang;
Lei-Meng Jiang
3
Department of Cario-, Endo- and Periodontology
, Academic Center for Dentistry, Amsterdam, The Netherlands
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Luc W. M. van der Sluis;
Luc W. M. van der Sluis
3
Department of Cario-, Endo- and Periodontology
, Academic Center for Dentistry, Amsterdam, The Netherlands
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Michel Versluis;
Michel Versluis
2
Physics of Fluids Group, MIRA and MESA+ Research Institutes
, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
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Detlef Lohse;
Detlef Lohse
2
Physics of Fluids Group, MIRA and MESA+ Research Institutes
, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
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Han J. G. E. Gardeniers
Han J. G. E. Gardeniers
1
Mesoscale Chemical Systems Group, MESA+ Research Institute
, University of Twente, ME147, P.O. Box 217, 7500AE Enschede, The Netherlands
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a)
Electronic mail: [email protected]. Telephone: +31 53 489 2594.
Biomicrofluidics 6, 034114 (2012)
Article history
Received:
May 21 2012
Accepted:
August 06 2012
Citation
David Fernandez Rivas, Bram Verhaagen, James R. T. Seddon, Aaldert G. Zijlstra, Lei-Meng Jiang, Luc W. M. van der Sluis, Michel Versluis, Detlef Lohse, Han J. G. E. Gardeniers; Localized removal of layers of metal, polymer, or biomaterial by ultrasound cavitation bubbles. Biomicrofluidics 1 September 2012; 6 (3): 034114. https://doi.org/10.1063/1.4747166
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