Shearing with solvent vapor annealing on block copolymer thin films for templates with macroscopically aligned nanodomains. (14th August 2020)

• Record Type: Journal Article
• Authors: Kang, Heejung; Kim, Kyungtae; Sohn, Byeong-Hyeok
• Is Part Of: Nanotechnology. Volume 31:Number 45(2020)
• Publication Date: 2020-08-14
• Subjects: shearing -- solvent vapor annealing -- block copolymers -- nanoscale templates -- aligned nanodomains; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/aba8bf
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: A template with macroscopically aligned nanopatterns can be an effective vehicle for arranging nanoscale particles or rods in a particular orientation to achieve their anisotropic properties. A room-temperature process is also desirable for nanoscale patterning of heat-sensitive functional molecules such as organic fluorophores. Here, large-area orientation of nanodomains of block copolymers is demonstrated by simultaneous shearing and solvent vapor annealing at room temperature. The shear-aligned nanodomains are applied to a chemical template for nanoscale patterning of green fluorescent molecules. In addition, the grooved nanochannels obtained from the macroscopically aligned nanodomains work as a physical template for guiding Au nanorods to end-to-end assemblies which exhibit the polarization-dependent plasmonic extinction.