http://www.imechanica.org/node/3705 Comments for "Simple strategies to produce perfect long range order in self-assembly" en http://www.imechanica.org/node/3705 <p> In a recent rapid communication (see attached paper), using principles of pattern formation, we expose some simple stategies to reliably produce perfect long range order in self-assembling systems. Most self-assembling systems exhibit short ranged order. This imperfection is detrimental to several practical applications. It is almost <strong>always</strong> possible to produce perfect patterns in small domain sizes but self-assembly over a larger areal span results in defects. </p> <p> <a href="http://www.imechanica.org/user/49">Wei Lu</a>, <a href="http://www.imechanica.org/user/2">Zhigang Suo</a> and others have done extensive work on this including coming up with approaches where electromagnetic fields may be used to create desired patterns (provided atoms of the self-assembling system respond to such fields). In the present work, we present an alternative approach which utilizes symmetry principles and nonlinear stablity analysis. We illustrate our central premise based on a paradigmatic self-assembly model developed by Zhigang Suo and Wei Lu for monolayer self-assembly. However, the general strategy should be applicable to many other self-assembling systems which are governed by different nonlinear PDEs. For example, we are currently applying this work for designing perfect long range order in Stranski-Krastanov quantum dot growth process (to be published). </p> <p> I and my co-authors would welcome feedback from the community </p> <br class="clear" /> http://www.imechanica.org/node/3705#comments research self-assembly Tue, 19 Aug 2008 17:10:06 -0400 Pradeep Sharma 3705 at http://www.imechanica.org