A New Generation of Non-Contact Printing

State of the art micro- and nanofabrication strongly depends on bulk wafer based photolithographic methods making manufacturing processes fast and efficient. However, the minimum feature size of these photolithographic processes is limited by the optical resolution of visible light which is in the range of 500nm.

Therefore, the present project intends the development of novel nano manufacturing methods by emerging beyond the paradigm of photo-optic methods.

Figure 1: Controlled fabrication of gold nanowires
Figure 2: Bitmap image of the Parthenon temple consisting of individual sub-micron pillars

Instead of using top-down manufacturing, which aims at the production of small structures by controlled removal of significant parts of bulk material (as done in photolithography), this project attempts the production of small structures by the assembly of even smaller objects, a process commonly called bottom-up approach. This will be achieved by on-demand printing of liquid-based nanoparticles to form 2D- and/or 3D structures.

In particular, electrostatic forces are used to manipulate nanoparticles in a carrier liquid. Multiple particle actuation methods ranging from traditional electrospraying of charged particles over the electroosmotic flow of ionic liquids and ultimately the dielectrophoretic actuation of non-charged, but polarizable objects are being investigated.

Concluding, the goal of this project is the development of novel non-contact deposition methods for ultra-small amounts of colloids while understanding the underlying physical and engineering principles.


Wichtiger Hinweis:
Diese Website wird in älteren Versionen von Netscape ohne graphische Elemente dargestellt. Die Funktionalität der Website ist aber trotzdem gewährleistet. Wenn Sie diese Website regelmässig benutzen, empfehlen wir Ihnen, auf Ihrem Computer einen aktuellen Browser zu installieren. Weitere Informationen finden Sie auf
folgender Seite.

Important Note:
The content in this site is accessible to any browser or Internet device, however, some graphics will display correctly only in the newer versions of Netscape. To get the most out of our site we suggest you upgrade to a newer browser.
More information

© 2014 ETH Zurich | Imprint | Disclaimer | 27 February 2012