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@ARTICLE{Meinhardt:612827,
      author       = {Meinhardt, Alexander and Qi, Peng and Maximov, Ivan and
                      Keller, Thomas F.},
      title        = {{A} {P}athway {T}oward {S}ub-10 nm {S}urface
                      {N}anostructures {U}tilizing {B}lock {C}opolymer
                      {C}rystallization {C}ontrol},
      journal      = {Advanced materials interfaces},
      volume       = {12},
      number       = {6},
      issn         = {2196-7350},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {PUBDB-2024-05481},
      pages        = {2400661},
      year         = {2025},
      abstract     = {It is elucidated how crystallization can be used to create
                      lateral surface nanostructures in a size regime toward
                      sub-10 nm using molecular self-assembly of short chain
                      crystallizable block copolymers (BCP) and assist in
                      overcoming the high-χ barrier for microphase separation. In
                      this work, an amphiphilic double-crystalline
                      polyethylene-b-polyethylene oxide (PE-b-PEO) block
                      co-oligomer is used. A crystallization mechanism of the
                      short-chain BCP in combination with neutral wetting of the
                      functionalized substrate surface that permits to form
                      edge-on, extended chain crystal lamellae with enhanced
                      thermodynamic stability. In situ atomic force microscopy
                      (AFM) analysis along with surface energy considerations
                      suggest that upon cooling from the polymer melt, the
                      PE-b-PEO first forms a segregated horizontal lamellar
                      morphology. AFM analysis indicates that the PEO
                      crystallization triggers a morphological transition
                      involving a rotation of the forming extended chain crystals
                      in edge-on orientation. Exposing their crystal side facets
                      to the top surface permits to minimize their interfacial
                      energy and form vertical nanostructures. Moreover, the
                      edge-on lamellae can be macroscopically aligned by directed
                      self-assembly (DSA), one necessity for various
                      nanotechnological applications. It is believed that the
                      observed mechanism to form stable edge-on lamellae can be
                      transferred to other crystallizable short chain BCPs,
                      providing potential pathways for sub-10 nm nanotechnology.},
      cin          = {FS-NL},
      ddc          = {600},
      cid          = {I:(DE-H253)FS-NL-20120731},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / NEP - Nanoscience Foundries and Fine
                      Analysis - Europe|PILOT (101007417) / HIRS-0018 -
                      Helmholtz-Lund International School - Intelligent
                      instrumentation for exploring matter at different time and
                      length scales (HELIOS) $(2020_HIRS-0018)$},
      pid          = {G:(DE-HGF)POF4-632 / G:(EU-Grant)101007417 /
                      $G:(DE-HGF)2020_HIRS-0018$},
      experiment   = {EXP:(DE-H253)Nanolab-04-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001419065800001},
      doi          = {10.1002/admi.202400661},
      url          = {https://bib-pubdb1.desy.de/record/612827},
}