Roll-to-Roll (R2R) Fabrication of Micro Pillar Array for Biomimetic Functionalization of Surface



Jeon, Deok-Jin;Lee, Jun-Young;Yeo, Jong-Souk

  • 투고 : 2014.01.10
  • 심사 : 2014.01.27
  • 발행 : 2014.01.30


The roll-to-roll (R2R) fabrication method to make micro-scale pillar arrays for biomimetic functionalization of surfaces is presented. Inspired by the micro-structure of plants in nature, a surface with a synthetic micro-scale pillar array is fabricated via maskless photolithography. After the surface is SAM (self-assembled monolayer) coated with trichlorosilane in a vacuum desiccator, it displays a hydrophobic property even in R2R replicas of original substrate, whose properties are further characterized using various pitches and diameters. In order to perform a comparison between the original micro-pattern and its replicas, surface morphology was analyzed using scanning electron microscopy and wetting characteristics were measured via a contact angle measurement tool with a $10{\mu}L$ water droplet. Efficient roll-to-roll imprinting for a biomimetic functionalized surface has the potential for use in many fields ranging from water repelling and self-cleaning to microfluidic chips.


Roll-to-roll process;Hydrophobic;Self-cleaning surface;Micro-pattern


  1. Y. T. Cheng, D. E. Rodak, C. A. Wong, and C. A. Hayden, Nanotechnology 17, 1359 (2006).
  2. B. Bhushan, Phil. Trans. R. Soc. A 28, 1445-1486 (2009).
  3. D. Quere, Annu. Rev. Mater. Res. 38, 71-99 (2008).
  4. B. Bhushan, Y. C. Jung, and K. Koch, Phil. Trans. R. Soc. A 13, 1631-1672 (2009).
  5. A. Lafuma and D. Quere, Nature Materials 2, 457-460 (2003).
  6. R. N. Wenzel, Industrial and Engineering Chemistry 28, 988-994 (1936).
  7. A. B. D. Cassie and S. Baxter, Trans. Faraday Soc. 40, 546-551 (1944).
  8. K. Koch and H. J. Ensikat, Micron 39, 759-772 (2008).
  9. K. Koch, B. Bhushan, and W. Barthlott, Progress in Materials Science 54, 137-178 (2009).
  10. Y. H. Ko, M. S. Kim, and J. S. Yu, J. Korean Vac. Soc. 21, 205-211 (2012).
  11. C. Y. Lee, S. B. Yoon, G. E. Jang, and W. S. Yun, J. Korean Vac. Soc. 19, 300-306 (2010).


연구 과제 주관 기관 : NIPA (National IT Industry Promotion Agency)