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@ARTICLE{Yadavalli:155369,
      author       = {Yadavalli, Nataraja Sekhar and Korolkov, Denis and Moulin,
                      Jean-François and Krutyeva, Margarita and Santer, Svetlana},
      title        = {{P}robing {O}pto-{M}echanical {S}tresses within
                      {A}zobenzene-{C}ontaining {P}hotosensitive {P}olymer {F}ilms
                      by a {T}hin {M}etal {F}ilm {P}laced {A}bove},
      journal      = {ACS applied materials $\&$ interfaces},
      volume       = {6},
      number       = {14},
      issn         = {1944-8252},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2014-04538},
      pages        = {11333 - 11340},
      year         = {2014},
      abstract     = {Azo-modified photosensitive polymers offer the interesting
                      possibility to reshape bulk polymers and thin films by
                      UV-irradiation while being in the solid glassy state. The
                      polymer undergoes considerable mass transport under
                      irradiation with a light interference pattern resulting in
                      the formation of surface relief grating (SRG). The forces
                      inscribing this SRG pattern into a thin film are hard to
                      assess experimentally directly. In the current study, we are
                      proposing a method to probe opto-mechanical stresses within
                      polymer films by characterizing the mechanical response of
                      thin metal films (10 nm) deposited on the photosensitive
                      polymer. During irradiation, the metal film not only deforms
                      along with the SRG formation but ruptures in a regular and
                      complex manner. The morphology of the cracks differs
                      strongly depending on the electrical field distribution in
                      the interference pattern, even when the magnitude and the
                      kinetics of the strain are kept constant. This implies a
                      complex local distribution of the opto-mechanical stress
                      along the topography grating. In addition, the neutron
                      reflectivity measurements of the metal/polymer interface
                      indicate the penetration of a metal layer within the
                      polymer, resulting in a formation of a bonding layer that
                      confirms the transduction of light-induced stresses in the
                      polymer layer to a metal film.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1 / JCNS (München) ;
                      Jülich Centre for Neutron Science JCNS (München) ;
                      JCNS-FRM-II},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218},
      pnm          = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
                      (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)REFSANS-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000339472100066},
      pubmed       = {pmid:24995460},
      doi          = {10.1021/am501870t},
      url          = {https://juser.fz-juelich.de/record/155369},
}