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Keywords:

  • amino acids;
  • nonpolar crystals;
  • pyroelectricity;
  • surface polarity;
  • thin films
Thumbnail image of graphical abstract

Surface pyroelectricity: Centrosymmetric crystals of α-glycine display an anomalous quadrupole-like pyroelectric current. This observation implies the formation of water–glycine hybrid polar layers at the (010) faces of the α-glycine crystals (see picture).