FIG. 2.8 (a) Thermal expansion coefficient of monoatomic two-dimensional honeycomb lattices of graphene, silicene, germanene, and phosphorene and (b) strain-dependent phonon frequency of GaSe. Reproduced with permission from Ge et al., Phys. Rev. B 94 , 165433 (2016). Copyright 2016 American Physical Society; and Longuinhos and Ribeiro-Soares, Phys. Rev. Appl. 11 , 024012 (2019). Copyright 2019 American Physical Society. More about this image found in (a) Thermal expansion coefficient of monoatomic two-dimensional honeycomb l...

FIG. 2.9 (a) Energetics and density of states of BaTiO₃ (BTO) and PbTiO₃ (PTO), (b) energetics, buckling (Δ) and polarization (P) of 1T MoS₂, and (c) energetics, charge disproportionation, and octahedral distortion in Bi_2−xSr_xFeCrO₆. Reproduced with permission from Cohen, Nature 358 , 136–138 (1992). Copyright 1992 Nature Publishing Group; Chanana and Waghmare, Phys. Rev. Lett. 123 , 037601 (2019). Copyright 2019 American Physical Society; and Rout and Srinivasan, Phys. Rev. Lett. 123 , 107201 (2019). Copyright 2019 American Physical Society. More about this image found in (a) Energetics and density of states of BaTiO₃ (BTO) and PbTiO...

FIG. 4.4 Example of the use of energy cubes for a hand pushing a box across the floor. Reprinted with permission from Scherr et al., Phys. Rev. Phys. Educ. Res. 8 , 020115 (2012a). Copyright 2012 Author(s), licensed under a Creative Commons Attributions 3.0 Unported License. More about this image found in Example of the use of energy cubes for a hand pushing a box across the floo...