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. 2018 Feb;17(2):180-186.
doi: 10.1038/nmat5045. Epub 2017 Dec 4.

Control of piezoelectricity in amino acids by supramolecular packing

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Control of piezoelectricity in amino acids by supramolecular packing

Sarah Guerin et al. Nat Mater. 2018 Feb.

Abstract

Piezoelectricity, the linear relationship between stress and induced electrical charge, has attracted recent interest due to its manifestation in biological molecules such as synthetic polypeptides or amino acid crystals, including gamma (γ) glycine. It has also been demonstrated in bone, collagen, elastin and the synthetic bone mineral hydroxyapatite. Piezoelectric coefficients exhibited by these biological materials are generally low, typically in the range of 0.1-10 pm V-1, limiting technological applications. Guided by quantum mechanical calculations we have measured a high shear piezoelectricity (178 pm V-1) in the amino acid crystal beta (β) glycine, which is of similar magnitude to barium titanate or lead zirconate titanate. Our calculations show that the high piezoelectric coefficients originate from an efficient packing of the molecules along certain crystallographic planes and directions. The highest predicted piezoelectric voltage constant for β-glycine crystals is 8 V mN-1, which is an order of magnitude larger than the voltage generated by any currently used ceramic or polymer.

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References

    1. Nat Nanotechnol. 2010 May;5(5):340-4 - PubMed
    1. ACS Nano. 2010 Feb 23;4(2):610-4 - PubMed
    1. Angew Chem Int Ed Engl. 2005 May 20;44(21):3226-9 - PubMed
    1. Science. 2017 Jul 21;357(6348):306-309 - PubMed
    1. IEEE Trans Ultrason Ferroelectr Freq Control. 2000;47(6):1277-90 - PubMed

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