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@ARTICLE{Zhao:858556,
      author       = {Zhao, Zhikai and Liu, Ran and Mayer, Dirk and Coppola,
                      Maristella and Sun, Lu and Kim, Youngsang and Wang, Chuankui
                      and Ni, Lifa and Chen, Xing and Wang, Maoning and Li,
                      Zongliang and Lee, Takhee and Xiang, Dong},
      title        = {{S}haping the {A}tomic-{S}cale {G}eometries of {E}lectrodes
                      to {C}ontrol {O}ptical and {E}lectrical {P}erformance of
                      {M}olecular {D}evices},
      journal      = {Small},
      volume       = {14},
      number       = {15},
      issn         = {1613-6810},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2018-07426},
      pages        = {1703815 -},
      year         = {2018},
      abstract     = {A straightforward method to generate both atomic‐scale
                      sharp and atomic‐scale planar electrodes is reported. The
                      atomic‐scale sharp electrodes are generated by precisely
                      stretching a suspended nanowire, while the atomic‐scale
                      planar electrodes are obtained via mechanically controllable
                      interelectrodes compression followed by a thermal‐driven
                      atom migration process. Notably, the gap size between the
                      electrodes can be precisely controlled at subangstrom
                      accuracy with this method. These two types of electrodes are
                      subsequently employed to investigate the properties of
                      single molecular junctions. It is found, for the first time,
                      that the conductance of the amine‐linked molecular
                      junctions can be enhanced $≈50\%$ as the atomic‐scale
                      sharp electrodes are used. However, the atomic‐scale
                      planar electrodes show great advantages to enhance the
                      sensitivity of Raman scattering upon the variation of
                      nanogap size. The underlying mechanisms for these two
                      interesting observations are clarified with the help of
                      density functional theory calculation and finite‐element
                      method simulation. These findings not only provide a
                      strategy to control the electron transport through the
                      molecule junction, but also pave a way to modulate the
                      optical response as well as to improve the stability of
                      single molecular devices via the rational design of
                      electrodes geometries.},
      cin          = {ICS-8},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-8-20110106},
      pnm          = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
      pid          = {G:(DE-HGF)POF3-523},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29542239},
      UT           = {WOS:000430186600008},
      doi          = {10.1002/smll.201703815},
      url          = {https://juser.fz-juelich.de/record/858556},
}