Direct Writing of Hydrophobic Sol-Gel Patterns


Solution-based fabrication methods have been widely used for depositing uniform functional coatings. These coatings can be utilized in a variety of applications such as optoelectronics, biomedical, and energy. However, such fabrication techniques are not appropriate for directly depositing patterned micro/nano-scale features, which are required in many contact-based applications such as in MEMS.

In this work we propose the direct writing of hydrophobic silica-based sol-gel patterns with sustained functionality and their subsequent tribological characterization. Such an approach may be an advantageous alternative to current lithography-based methods due to the relative ease of processing and low material waste. This investigation involves the abrasive wear and frictional analysis of patterned fluorinated silica sol-gel coatings that are directly printed onto glass substrates with a robotically controlled pneumatic nozzle system. Such work sheds light on the tribological properties of lithography-free processed hydrophobic patterns for applications spanning from micromotors to biomedical fluidic devices.

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  1. 1.

    T. Beystrum, R. Himoto, N. Jacksen, and M. Sutton, Infrared Technology and Applications XXX, Proc. SPIE 5406, 287 (2004).

    Article  Google Scholar 

  2. 2.

    J. Qiu, B. Weng, Z. Yuan, and Z. Shi, J. Appl. Phys. 113, 103102 (2013).

    Article  Google Scholar 

  3. 3.

    M.T. Rodrigo, F.J. Sanchez, M.C. Torquemada, V. Villamayor, G. Vergara, M. Verdu, L.J. Gomez, J. Diezhandino, R. Almazan, P. Rodriguez, J. Plaza, I. Catalan, M.T. Montojo, Infrared Physics & Technology 44, 281 (2003).

    CAS  Article  Google Scholar 

  4. 4.

    M. C. Torquemada, M. T. Rodrigo, G. Vergara, F. J. Sanchez, R. Almazan, M. Verdu, P. Rodriguez, V. Villamayor, L. J. Gomez, and M. T. Montojo, J. Appl. Phys. 93, 1778 (2003).

    CAS  Article  Google Scholar 

  5. 5.

    G. Vergara, R. Linares Herrero, R. Gutiérrez Álvarez, C. Fernández Montojo, L.J. Gómez, V. Villamayor, A. Baldasano Ramírez and M.T. Montojo, Infrared Technology and Applications XXXIX, Proc. SPIE 8704, 87041M (2013).

  6. 6.

    R. L. Petritz, Phys. Rev. 104, 1508 (1956).

    CAS  Article  Google Scholar 

  7. 7.

    S. Horn, D. Lohrmann, P. Norton, K. McCormack, and A. Hutchinson, Proc. SPIE 5783, 401 (2005).

    CAS  Article  Google Scholar 

  8. 8.

    S. Gorer, A. Albu-Yaron, and G. Hodes, Chem. Mater. 7, 1243 (1995).

    CAS  Article  Google Scholar 

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Correspondence to Derrick A. Banerjee.

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Banerjee, D.A., Sierros, K.A. Direct Writing of Hydrophobic Sol-Gel Patterns. MRS Online Proceedings Library 1804, 4 (2015).

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