Journal
NANOTECHNOLOGY
Volume 26, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/26/5/055301
Keywords
directed self-assembly; gold nanorods; block copolymer; thin films
Funding
- IBM
- NSF [ECCS-1127731]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1127731] Funding Source: National Science Foundation
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We present a facile strategy for the directed self-assembly of gold nanorods (AuNRs) in patterned block copolymer (BCP) thin films. Parallel arrangement of AuNRs relative to the geometric confinement generated by selective removal of one block domain was achieved. Deposition of AuNRs with aspect ratios from 3.3 to 5.8 was accomplished and the alignment of the NRs within the channels was controlled primarily by capillary forces and the channel geometry. Ordered AuNR assembly in the BCP pattern can be achieved at high surface coverages, > 30%, though the surface coverage depends on the aspect ratio of the NRs. Larger NRs align in the channels more readily, but pack at slightly lower densities.
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