BioFerroelectricity: Diphenylalanine Peptide Nanotubes Computational Modeling and Ferroelectric Properties at the Nanoscale

Piezoelectricity and ferroelectricity in biomaterials: Molecular modeling and piezoresponse force microscopy measurements

“…5,6,15,43 All amino acids contains their own dipole moment (usually directed from oxygen to nitrogen atoms in its molecular structure), which leads to the complex dipole-dipole interactions and dipole ordering during self-assembly and formation of larger biomolecular systems. Recently, Lemanov et al 55 have shown that several amino acids possess piezoelectric properties in the crystal form.…”

“…3,4 It is based on the complex dipolar properties and dipole-dipole interactions conjugated with hydrogen bonds network in biomolecular systems with different levels of self-assembly and hierarchy. It has been recently shown 5,6 that several biomolecular structures (both crystalline and composite) based on important biological molecules demonstrate properties similar to their inorganic counterparts, namely, sufficiently strong piezoelectricity and, moreover, apparent ferroelectric-like behavior. We will start from the definition of piezoelectricity and ferroelectricity in general and historical overview of these phenomena observed in biological materials.…”

“…Further generalization of the term bioferroelectricity can be found, for example, in voltage-controlled muscle movement, in the excitable biological membranes 27 and in the voltage-dependent ion channels. 5,13 Brain memory was thought to be based on a ferroelectric mechanism. 28 In the series of articles by Beresnev et al, 29 close similarity between biomembranes and ferroelectric liquid crystals (tilted layers of lipid and protein molecules alignment) was noted.…”

Local piezoresponse and polarization switching in nucleobase thymine microcrystals

“…For these calculations we used HyperChem 8.0 tools as described previously in a number of papers. 27,[34][35][36]59 Using this approach, we developed a simple molecular model for thymine molecular unit based on the reported unit cell of the crystal (consisting of four thymine molecules lying in one plane, Fig. 11).…”

Computer Aided Molecular Modeling of the Piezoelectric Properties of Ferroelectric Composites on the Base of Polyvinylidene Fluoride with Graphene and Graphene Oxide

“…Особый интерес представляют пьезо-сегнетоэлектрические полимеры, сочетающие графен (G) или оксид графена (GO) с поливинилиденфторидом (PVDF) или с поливинилиденфторид-трифторэтиленом (P(VDF-TrFE)) [4], так как включение основанных на графене наноструктур позволяет создавать множество новых наноматериалов [5]. В тоже время значительный интерес представляют и разнообразные пьезоактивные органические материалы и полимеры [6][7][8][9][10][11][12][13][14]. В частности, и сами такие сополимеры как PVDF или P(VDF-TrFE) имеют многочисленные применения в датчиках, преобразователях, наномоторах и т. д.…”