Woodruff School of Mechanical Engineering

Mechanical Engineering Seminar

Title:

Functional Nanolayers made from Colloidal Building Blocks

Speaker:

Dr. Andreas Fery

Affiliation:

Leibniz Institute of Polymer Research, Dresden, Germany

When:

Thursday, October 27, 2016 at 11:00:00 AM

Where:

Love Building, Room 109

Host:

Alexander Alexeev
alexander.alexeev@me.gatech.edu

Abstract

Colloidal particles are attractive building blocks for forming functional coatings. Already at the single particle level, even multiple functionalities like optical functionality or stimulus sensitivity can be established. At the same time, particle immobilization typically does not require sophisticated specific coupling chemistry, but in many cases, physisorption relying on unspecific interactions is sufficient. Finally, multi-layer formation and/or lateral patterning can unlock novel properties, which arise from synergistic functional, as well as local or long range coupling effects. I will illustrate this concept with examples from the area of stimulus responsive layers using microgel-or block-copolymer building blocks. The stimulus sensitivity of those can be used for controlling the interaction of cells with surfaces, allowing for novel concepts in switchable cell culture surfaces or anti-fouling. Here soft matter physics concepts are of vital importance for rational design and tailoring responsiveness and interactivity with biological systems. In the second part, I will discuss how non lithographic patterning of metallic colloidal particles can be used for controlling order of plasmonic particles on macroscopic areas. This opens new perspectives for investigating plasmonic coupling and even metamaterial effects.


Biography

Dr. Andreas Fery is Professor for Physical Chemistry of Polymeric Materials at Technical University Dresden and the Head of Leibniz Institute of Polymer Research in Dresden, Germany. His research interests include colloid- and interface science with a focus on responsive polymeric/hybrid coatings and supra-colloidal structures. In both areas, he is looking for novel assembly principles and functionalities. To reach this goal, he combines soft matter physics with advanced characterization techniques for nanomechanical / interaction properties of colloidal particles on the single particle level, synthesis of colloidal building blocks and template assisted self-assembly.