Date 2019-09-10 

■ Title:  Dynamic assembly of nanomaterials into filber 


 Speaker:  Prof. Won Jun LEE (DKU)


■ Date and time:  9/10(Tue) 16:00


■ Venue:  Applied Engineering Building (W1) 1st Floor, Multimedia Lecture Room


 Host :  Prof. Sang Ouk Kim 


 Abstract :   

State-of-the-art, high performance materials, based on nanomaterials, have an essentially static structural framework that fails irreversibly without any dynamic response. Re-engineering the constituents may allow a dynamic response to stimulus without irreversible loss of mechanical performance in structurally well-defined system. To enable this approach, molecular interactions must respond at the certain levels and timescales without losing their features at the nanoscale. Recent advances in the chemistry of complementary nanomaterials will provide the means to adjust the strength of the interactions. For optimal performance, the constituents will need to be redesigned from the bottom up; however, in many cases, existing materials can be adapted by integrating new, dynamically responsive links. Whilst we are not intending to follow an explicitly classical approach, it is worth noting that most tough and strong fiber systems integrate liquid crystalline materials with soft, dynamic molecular phases. Our strategy is to introduce strong dynamic (reversible) interactions in a variety of length scales and geometries, in order to explore new strategies for the fabrication of functional materials. In particular, this talk will highlight our recent works on chemical complementarity such as surface charge, polarizability, and surface functionalities to assemble into different dimensional forms.