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@ARTICLE{Barannik:857993,
      author       = {Barannik, Alexander A. and Cherpak, Nickolay T. and
                      Protsenko, Irina A. and Vitusevich, Svetlana A.},
      title        = {{M}illimeter-{W}ave {WGM} {R}esonator-{B}ased
                      {C}haracterization of {C}ontinuous and {N}oncontinuous
                      {U}ltrathin {C}u {F}ilms},
      journal      = {IEEE microwave and wireless components letters},
      volume       = {29},
      number       = {5},
      issn         = {1051-8207},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {FZJ-2018-06940},
      pages        = {363-365},
      year         = {2019},
      abstract     = {We analyze the experimental data on the evolution of the
                      microwave (MW) response of the whispering gallery mode (WGM)
                      resonator. The focus is on the thickness df variation of the
                      conducting endplates (CEPs) from df exceeding skin layer
                      thickness δs to dfłlδ s down to df = 0, i.e., with no
                      CEPs. The analysis was performed by comparing the numerical
                      simulation results obtained using COMSOL software with the
                      authors' experimental data on the response of the Ka-band
                      sapphire WGM resonator. The nonmonotonic change in the WGM
                      resonator response with decreasing thickness df is explained
                      using the metal-insulator percolation model proposed by
                      Krupka et al. We use a different resonator (quasi-optical)
                      technique and different mode polarization, namely, the HE14
                      1 δ mode. The artificially introduced discontinuity of the
                      ultrathin film, resulting in a sharp growth of the Q-factor
                      is analogous with the percolation material structure. The
                      revealed effect may be useful for the development of MW
                      devices with dynamically controlled properties of
                      metamaterials.},
      cin          = {ICS-8},
      ddc          = {620},
      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},
      UT           = {WOS:000467572600019},
      doi          = {10.1109/LMWC.2019.2902952},
      url          = {https://juser.fz-juelich.de/record/857993},
}