skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Selective directed self-assembly of coexisting morphologies using block copolymer blends

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms12366· OSTI ID:1303021

Directed self-assembly (DSA) of block copolymers is an emergent technique for nano-lithography, but is limited in the range of structures possible in a single fabrication step. We expand on traditional DSA chemical patterning. Moreover, a blend of lamellar- and cylinder-forming block copolymers assembles on specially designed surface chemical line gratings, leading to the simultaneous formation of coexisting ordered morphologies in separate areas of the substrate. The competing energetics of polymer chain distortions and chemical mismatch with the substrate grating bias the system towards either line/space or dot array patterns, depending on the pitch and linewidth of the prepattern. This contrasts with typical DSA, wherein assembly of a single-component block copolymer on chemical templates generates patterns of either lines/spaces (lamellar) or hexagonal dot arrays (cylinders). In our approach, the chemical template encodes desired local spatial arrangements of coexisting design motifs, self-assembled from a single, sophisticated resist.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1303021
Report Number(s):
BNL-112517-2016-JA; KC0403020
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 39 works
Citation information provided by
Web of Science

References (35)

Phase Behavior of Pure Diblocks and Binary Diblock Blends of Poly(ethylene)−Poly(ethylethylene) journal January 1996
Guiding Polymers to Perfection:  Macroscopic Alignment of Nanoscale Domains journal February 2004
Millisecond Ordering of Block Copolymer Films via Photothermal Gradients journal February 2015
Polymers confined between two parallel plane walls journal January 2004
Graphoepitaxy of Self-Assembled Block Copolymers on Two-Dimensional Periodic Patterned Templates journal August 2008
Templating Three-Dimensional Self-Assembled Structures in Bilayer Block Copolymer Films journal June 2012
Sacrificial-Post Templating Method for Block Copolymer Self-Assembly journal July 2013
Directed Self-Assembly of Block Copolymers for Nanolithography: Fabrication of Isolated Features and Essential Integrated Circuit Geometries journal October 2007
Directed self-assembly of block copolymers in the extreme: guiding microdomains from the small to the large journal January 2013
Enabling complex nanoscale pattern customization using directed self-assembly journal December 2014
Design rules for self-assembled block copolymer patterns using tiled templates journal February 2014
Assembly of Sub-10-nm Block Copolymer Patterns with Mixed Morphology and Period Using Electron Irradiation and Solvent Annealing journal November 2011
Self-Assembled Phases of Block Copolymer Blend Thin Films journal October 2014
Templated Self-Assembly of Block Copolymers: Top-Down Helps Bottom-Up journal October 2006
Density Multiplication and Improved Lithography by Directed Block Copolymer Assembly journal August 2008
Immiscibility of large and small symmetric diblock copolymers journal August 1995
Structural study of mixtures of styrene isoprene two- and three-block copolymers journal March 1982
Ordered Structure in Blends of Block Copolymers.2.Self-Assembly for Immiscible Lamella-Forming Copolymers journal November 1994
Dimensions and Shapes of Block Copolymer Domains Assembled on Lithographically Defined Chemically Patterned Substrates journal January 2007
Orientational Order in Block Copolymer Films Zone Annealed below the Order−Disorder Transition Temperature journal September 2007
Ordered Structure in Blends of Block Copolymers. 3. Self-Assembly in Blends of Sphere- or Cylinder-Forming Copolymers journal July 1994
Long-Range Order and Orientation of Cylinder-Forming Block Copolymers on Chemically Nanopatterned Striped Surfaces journal May 2006
Complex self-assembled patterns using sparse commensurate templates with locally varying motifs journal March 2010
One-Component Approximation for Binary Diblock Copolymer Blends journal October 1995
Effects of Lateral Confinement on Order in Spherical Domain Block Copolymer Thin Films journal September 2003
Controlling interfacial interactions for directed self assembly of block copolymers
  • Stein, Gila E.; Mahadevapuram, Nikhila; Mitra, Indranil
  • Journal of Polymer Science Part B: Polymer Physics, Vol. 53, Issue 2, p. 96-102 https://doi.org/10.1002/polb.23502
journal May 2014
Selective Area Control of Self-Assembled Pattern Architecture Using a Lithographically Patternable Block Copolymer journal June 2009
Evolution of block-copolymer order through a moving thermal zone journal January 2010
Phase Behavior in Thin Films of Cylinder-Forming Block Copolymers journal June 2002
Dynamics of pattern coarsening in a two-dimensional smectic system journal July 2002
Formation of superlattices via blending of block copolymers journal January 2000
Stretching and compression of a macromolecule under different modes of mechanical manupulations journal May 2009
Python for Scientific Computing journal January 2007
Matplotlib: A 2D Graphics Environment journal January 2007
Polymer Self-Assembly as a Novel Extension to Optical Lithography journal October 2007

Cited By (3)

Non-native three-dimensional block copolymer morphologies journal December 2016
Photothermally Directed Assembly of Block Copolymers journal December 2019
Simultaneous fabrication of line and dot dual nanopatterns using miktoarm block copolymer with photocleavable linker journal November 2017