Electrowetting

  • Reference work entry
  • First Online:
Encyclopedia of Nanotechnology

Synonyms

Digital microfluidics; Droplet microfluidics; Electrocapillarity; Electrostatic actuation of droplets; Electrowetting-on-dielectric (EWOD)

Definition

Making a surface more wetting to a liquid by applying voltages.

Introduction

When a material (typically solid) and a liquid are in contact, the application of an electric potential between them may cause the wettability of the material to increase, which is exhibited by a decrease of the observed contact angle. This phenomenon is called electrowetting – a term reminiscent of the more traditional electrocapillarity. In recent years, the development of various electrode and material configurations for technological applications – mostly in the rapidly expanding field of microfluidics – has given rise to additional terms such as electrowetting-on-dielectric (EWOD). Because technologies relying on the actuation of liquids by applied electrical potentials are still new, the terms used to describe such systems can be difficult to...

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 2,499.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book
USD 549.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free ship** worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Lippmann, G.: Relations entre les phenomenes electriques et capillaries. Ann. Chim. Phys. 5, 494–549 (1875)

    Google Scholar 

  2. Beni, G., Hackwood, S.: Electro-wetting displays. Appl. Phys. Lett. 38, 207–209 (1981)

    Article  Google Scholar 

  3. Prins, M.W.J., Welters, W.J.J., Weekamp, J.W.: Fluid control in multichannel structures by electrocapillary pressure. Science 291, 277–280 (2001)

    Article  Google Scholar 

  4. Lee, J., Kim, C.-J.: Surface-tension-driven microactuation based on continuous electrowetting. J. Microelectromech. Syst. 9, 171–180 (2000)

    Article  Google Scholar 

  5. Minnema, L., Barneveld, H.A., Rinkel, P.D.: An investigation into the mechanism of water treeing in polyethylene high-voltage cables. IEEE Trans. Electr. Insul. EI-15(6), 461–472 (1980)

    Article  Google Scholar 

  6. Berge, B.: Electrocapillarity and wetting of insulator films by water. C. R. Acad. Sci. Ser. II 317, 157–163 (1993)

    Google Scholar 

  7. Moon, M., Cho, S.K., Garrell, R.L., Kim, C.-J.: Low voltage electrowetting-on-dielectric. J. Appl. Phys. 92, 4080–4087 (2002)

    Article  Google Scholar 

  8. Lee, J.: Microactuation by continuous electrowetting and electrowetting: theory, fabrication, and demonstration. Ph.D. thesis, University of California, Los Angeles (2000)

    Google Scholar 

  9. Lee, J., Moon, H., Fowler, J., Schoellhammer, T., Kim, C.-J.: Electrowetting and electrowetting-on-dielectric for microscale liquid handling. Sens. Actuators A95, 259–268 (2002)

    Article  Google Scholar 

  10. Nelson, W.C., Kim, C.-J.: Droplet actuation by electrowetting-on-dielectric (EWOD): a review. J. Adhes. Sci. Technol. (2012). (In print)

    Google Scholar 

  11. Jones, T.B.: On the relationship of dielectrophoresis and electrowetting. Langmuir 18, 4437–4443 (2002)

    Article  Google Scholar 

  12. Kang, K.H.: How electrostatic fields change contact angle in electrowetting. Langmuir 18, 10318–10322 (2002)

    Article  Google Scholar 

  13. Mugele, F., Buehrle, J.: Equilibrium drop surface profiles in electric fields. J. Phys. Condens. Matter 19, 375112–375132 (2007)

    Article  Google Scholar 

  14. Verheijen, H.J.J., Prins, M.W.J.: Reversible electrowetting and trap** of charge: model and experiments. Langmuir 15, 6616–6620 (1999)

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to C. J. Kim .

Editor information

Editors and Affiliations

Copyright information

© 2016 Springer Science+Business Media Dordrecht

About this entry

Cite this entry

Kim, C.J. (2016). Electrowetting. In: Bhushan, B. (eds) Encyclopedia of Nanotechnology. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-9780-1_305

Download citation

Publish with us

Policies and ethics

Navigation