Abstract
We study the torsion of a flexoelectric semiconductor rod with a rectangular cross section. The macroscopic theory of flexoelectric semiconductors is used. A one-dimensional model is established from the three-dimensional theory using double power series expansion of the coordinates within the cross section. The angle of twist of the rod and warping of the cross section are taken into consideration by retaining the proper lower-order terms in the expansion. Solutions of wave propagation in an unbounded rod and static torsion of a finite rod are presented, showing that electromechanical couplings exist when warping varies along the axis of the rod. The torsional wave is essentially nondispersive, but the warping wave is dispersive with a cutoff frequency. The mobile charges concentrate at the corners of the cross section. The electric potential and charge carrier distributions produced by mechanical loads are sensitive to the geometric and physical parameters of the system. The results are potentially useful for making flexotronic devices based on torsional modes.
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References
Wang, Z.L.: Piezotronics and Piezo-Phototronics. Springer, Berlin (2012)
Wang, Z.L., Wu, W.Z.: Piezotronics and piezo-phototronics-fundamentals and applications. Natl. Sci. Rev. 1, 62–90 (2014). https://doi.org/10.1093/nsr/nwt002
Liu, Y., Zhang, Y., Yang, Q., Niu, S.M., Wang, Z.L.: Fundamental theories of piezotronics and piezo-phototronics. Nano Energy 14, 257–275 (2015). https://doi.org/10.1016/j.nanoen.2014.11.051
Wang, Z.L., Wu, W.Z., Falconi, C.: Piezotronics and piezo-phototronics with third-generation semiconductors. MRS Bull. 43, 922–927 (2018). https://doi.org/10.1557/mrs.2018.263
Zhang, Y., Leng, Y., Willatzen, M., Huang, B.: Theory of piezotronics and piezo-phototronics. MRS Bull. 43, 928–935 (2018). https://doi.org/10.1557/mrs.2018.297
Wauer, J., Suherman, S.: Thickness vibrations of a piezo-semiconducting plate layer. Int. J. Eng. Sci. 35, 1387–1404 (1997). https://doi.org/10.1016/s0020-7225(97)00060-8
Jiao, F.Y., Wei, P.J., Zhou, Y.H., Zhou, X.L.: Wave propagation through a piezoelectric semiconductor slab sandwiched by two piezoelectric half-spaces. Eur. J. Mech. A. Solids 75, 70–81 (2019). https://doi.org/10.1016/j.euromechsol.2019.01.007
Jiao, F.Y., Wei, P.J., Zhou, Y.H., Zhou, X.L.: The dispersion and attenuation of the multi-physical fields coupled waves in a piezoelectric semiconductor. Ultrasonics 92, 68–78 (2019). https://doi.org/10.1016/j.ultras.2018.09.009
Sladek, J., Sladek, V., Pan, E., Wuensche, M.: Fracture analysis in piezoelectric semiconductors under a thermal load. Eng. Fract. Mech. 126, 27–39 (2014). https://doi.org/10.1016/j.engfracmech.2014.05.011
Tian, R., Liu, J.X., Pan, E., Wang, Y.S., Soh, A.K.: Some characteristics of elastic waves in a piezoelectric semiconductor plate. J. Appl. Phys. 126, 125701 (2019). https://doi.org/10.1063/1.5116662
Zhao, M.H., Pan, Y.B., Fan, C.Y., Xu, G.T.: Extended displacement discontinuity method for analysis of cracks in 2D piezoelectric semiconductors. Int. J. Solids Struct. 94–95, 50–59 (2016). https://doi.org/10.1016/j.ijsolstr.2016.05.009
Qin, G.S., Lu, C.S., Zhang, X., Zhao, M.H.: Electric current dependent fracture in GaN piezoelectric semiconductor ceramics. Materials 11, 2000 (2000). https://doi.org/10.3390/ma11102000
Afraneo, R., Lovat, G., Burghignoli, P., Falconi, C.: Piezo-semiconductive quasi-1D nanodevices with or without anti-symmetry. Adv. Mater. 24, 4719–4724 (2012). https://doi.org/10.1002/adma.201104588
Fan, S.Q., Liang, Y.X., Xie, J.M., Hu, Y.T.: Exact solutions to the electromechanical quantities inside a statically-bent circular ZnO nanowire by taking into account both the piezoelectric property and the semiconducting performance: part I-linearized analysis. Nano Energy 40, 82–87 (2017). https://doi.org/10.1016/j.nanoen.2017.07.049
Liang, Y.X., Fan, S.Q., Chen, X.D., Hu, Y.T.: Nonlinear effect of carrier drift on the performance of an n-type ZnO nanowire nanogenerator by coupling piezoelectric effect and semiconduction. Nanotechnology 9, 1917–1925 (2018). https://doi.org/10.3762/bjnano.9.183
Sharma, J.N., Sharma, K.K., Kumar, A.: Acousto-diffusive waves in a piezoelectric-semiconductor-piezoelectric sandwich structure. World J. Mech. 1, 247–255 (2011). https://doi.org/10.4236/wjm.2011.15031
Zhang, C.L., Luo, Y.X., Cheng, R.R., Wang, X.Y.: Electromechanical fields in piezoelectric semiconductor nanofibers under an axial force. MRS Adv. 2, 3421–3426 (2017). https://doi.org/10.1557/adv.2017.301
Yang, J.S.: Analysis of Piezoelectric Semiconductor Structures. Springer Nature, Cham (2020)
Yang, M.M., Kim, D.J., Alexe, M.: Flexo-photovoltaic effect. Science 360, 904–907 (2020). https://doi.org/10.1126/science.aan3256
Zou, H., Zhang, C., Xue, H., Wu, Z., Wang, Z.L.: Boosting the solar cell efficiency by flexophotovoltaic effect? ACS Nano 13, 12259–12267 (2019). https://doi.org/10.1021/acsnano.9b07222
Zhao, M.H., Liu, X., Fan, C.Y., Lu, C.S., Wang, B.B.: Theoretical analysis on the extension of a piezoelectric semi-conductor nanowire: effects of flexoelectricity and strain gradient. J. Appl. Phys. 127, 085707 (2020). https://doi.org/10.1063/1.5131388
Qu, Y.L., Jin, F., Yang, J.S.: Effects of mechanical fields on mobile charges in a composite beam of flexoelectric dielectrics and semiconductors. J. Appl. Phys. 127, 194502 (2020). https://doi.org/10.1063/5.0005124
Wang, L.F., Liu, S.H., Feng, X.L., Zhang, C.L., Zhu, L.P., Zhai, J.Y., Qin, Y., Wang, Z.L.: Flexoelectronics of centrosymmetric semiconductors. Nat. Nanotechnol. 15, 661–667 (2020). https://doi.org/10.1038/s41565-020-0700-y
Zhang, R., Liang, X., Shen, S.P.: A Timoshenko dielectric beam model with flexoelectric effect. Meccanica 51, 1181–1188 (2015). https://doi.org/10.1007/s11012-015-0290-1
Deng, Q., Kammoun, M., Erturk, A., Sharma, P.: Nanoscale flexoelectric energy harvesting. Int. J. Solids Struct. 51, 3218–3225 (2014). https://doi.org/10.1016/j.ijsolstr.2014.05.018
Hu, Y.T., Wang, J.N., Yang, F., Xue, H., Hu, H.P., Wang, J.: The effect of first-order strain gradient in micro piezoelectric-bimorph power harvester. IEEE Trans. Ultrason. Ferroelectr. Freq. Control 58, 849–852 (2011). https://doi.org/10.1109/tuffc.2011.1878
Zhou, Z.D., Yang, C.P., Su, Y.X., Huang, R., Lin, X.L.: Electromechanical coupling in piezoelectric nanobeams due to the flexoelectric effect. Smart Mater. Struct. 26, 095025 (2017). https://doi.org/10.1088/1361-665x/aa7936
Dhaba, A.E., Gabr, M.E.: Flexoelectric effect induced in an anisotropic bar with cubic symmetry under torsion. Math. Mech. Solids 25, 820–837 (2020). https://doi.org/10.1177/1081286519895569
Jordi, M.M.: Flexoelectricity in nanobeams under torsion. Bachelor thesis, UPC (2016). http://www.hdl.handle.net/2117/91478
Tagantsev, A.K.: Theory of flexoelectric effect in crystals. Sov. Phys. JETP 61, 1246–1254 (1985)
Tagantsev, A.K., Meunier, V., Sharma, P.: Novel electromechanical phenomena at the nanoscale: phenomenological theory and atomistic modeling. MRS Bull. 34, 643–647 (2009). https://doi.org/10.1557/mrs2009.175
Maranganti, R., Sharma, N.D., Sharma, P.: Electromechanical coupling in nonpiezoelectric materials due to nanoscale nonlocal size effects: Green’s function solutions and embedded inclusions. Phys. Rev. B (2006). https://doi.org/10.1103/physrevb.74.014110
Shen, S., Hu, S.: A theory of flexoelectricity with surface effect for elastic dielectrics. J. Mech. Phys. Solids 58, 665–677 (2010). https://doi.org/10.1016/j.jmps.2010.03.001
Xu, L., Shen, S.S.: Size-dependent piezoelectricity and elasticity due to the electric field-strain gradient coupling and strain gradient elasticity. Int. J. Appl. Mech. 05, 1350015 (2013). https://doi.org/10.1142/s1758825113500154
Pierret, R.F.: Semiconductor Device Fundamentals. Pearson, Uttar Pradesh (1996)
Sze, S.M.: Physics of Semiconductor Devices. Wiley, New York (1981)
Bleustein, J.L., Stanley, R.: A dynamical theory of torsion. Int. J. Solids Struct. 6, 569–586 (1970). https://doi.org/10.1016/0020-7683(70)90031-4
Dokmeci, M.C.: A theory of high frequency vibrations of piezoelectric crystal bars. Int. J. Solids Struct. 10, 401–409 (1974). https://doi.org/10.1016/0020-7683(74)90109-7
Mindlin, R.D.: Low frequency vibrations of elastic bars. Int. J. Solids Struct. 12, 27–49 (1976). https://doi.org/10.1016/0020-7683(76)90071-8
Chou, C.S., Yang, J.W., Huang, Y.C., Yang, H.J.: Analysis on vibrating piezoelectric beam gyroscope. Int. J. Appl. Electromagn. 2, 227–241 (1991)
Yang, J.S.: Equations for the extension and flexure of a piezoelectric beam with rectangular cross section and applications. Int. J. Appl. Electromagn. 9, 409–420 (1998). https://doi.org/10.3233/jaem-1998-121
Li, P., Jin, F., Ma, J.: One-dimensional dynamic equations of a piezoelectric semiconductor beam with a rectangular cross section and their application in static and dynamic characteristic analysis. Appl. Math. Mech. 39, 685–702 (2018). https://doi.org/10.1007/s10483-018-2325-6
Shu, L.L., Wei, X.Y., Pang, T., Yao, X., Wang, C.L.: Symmetry of flexoelectric coefficients in crystalline medium. J. Appl. Phys. 110(10), 53 (2011). https://doi.org/10.1063/1.3662196
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This work was supported by the National Natural Science Foundation of China (No. 12072253), 111 Project version 2.0, and the Fundamental Research Funds for the Central Universities (xzy022020016).
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Qu, Y., Jin, F. & Yang, J. Torsion of a flexoelectric semiconductor rod with a rectangular cross section. Arch Appl Mech 91, 2027–2038 (2021). https://doi.org/10.1007/s00419-020-01867-0
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DOI: https://doi.org/10.1007/s00419-020-01867-0