Publications [#263351] of Stefan Zauscher

Papers Published

1. Ahn, SJ; Lee, WK; Zauscher, S, Fabrication of stimulus-responsive polymeric nanostructures by proximal probes, Materials Research Society Symposium Proceedings, vol. 735 (July, 2003), pp. 111-116, Boston, MA, United States
   (last updated on 2023/06/01)

   Abstract:
   The triggered control of interfacial properties on the nanometer scale holds significant promise for actuation in bio-nanotechnology applications where polymeric actuators may manipulate the transport, separation, and detection of biomolecules. To fabricate patterned, stimulus-responsive polymer brushes we have developed several methods that combine surface initiated polymerization (SIP) with dip-pen nanolithography (DPN). Surface-confined, stimulus-responsive polymer brush nanopatterns were fabricated by amplification of DPN patterned, self-assembled monolayers of 16-mercaptohexadecanoic acid on gold surfaces by SIP of N-isopropylacrylamide (NIPAAm). While free radical polymerization yielded only short polymer brushes (DP<50), atom transfer free radical polymerization (ATRP) produced thick, uniform polymer brushes. For free radical polymerization the thickness of the polymer brush layer is a function of the lateral feature size and the initiator density and is maximal at pattern boundaries.

   Keywords:
   Polymers;Free radical polymerization;Nanotechnology;Surfaces;Self assembly;Gold;