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Permanent Polarity and Piezoelectricity of Electrospun a-Helical Poly(a-Amino Acid) Fibers

机译:电纺α-螺旋聚(α-氨基酸)纤维的永久极性和压电性

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摘要

Electrospinning is a versatile and cost-effective method for the fabrication of polymeric fibers with sub-micrometer dia-meter.[1] Although several patents and recent publications have discussed the production of piezoelectric fibers via electrospinning, to date, a direct evidence of poled molecular dipoles and their correlation to fiber piezoelectricity have not been demonstrated.[2,3] Here we show for the first time that electrospinning can be used as a one-step method to produce polar polymer fibers with electric dipoles permanently poled in the direction of the fiber axis, resulting in high non-linear optical (NLO) activity and thermally stable piezoelectricity.
机译:电纺丝是一种用于制造亚微米直径聚合物纤维的通用且经济高效的方法。[1]尽管有几项专利和最新出版物讨论了通过静电纺丝生产压电纤维的方法,但迄今为止,尚未证明极化分子偶极子及其与纤维压电性的直接关系。[2,3]在这里,我们首次证明电纺丝可以用作一步法生产极性聚合物纤维,该聚合物具有在纤维轴方向永久极化的电偶极子,从而产生高非线性光学(NLO)活性和热稳定的压电性。

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  • 来源
    《Advanced Materials》 |2011年第34期|p.3954-3958|共5页
  • 作者单位

    Department of Materials Science & Engineering The Johns Hopkins University 3400 N. Charles St., Baltimore, MD 21218, USA Applied Physics Laboratory The Johns Hopkins University 11100 Johns Hopkins Road, Laurel, MD 20723, USA;

    Department of Materials Science & Engineering The Johns Hopkins University 3400 N. Charles St., Baltimore, MD 21218, USA;

    Department of Materials Science & Engineering The Johns Hopkins University 3400 N. Charles St., Baltimore, MD 21218, USA;

    Department of Mechanical Engineering Pohang University of Science and Technology San 31 Hyojadong Nam-ku, Pohang, Cyungbuk 790-784, Republic of Korea;

    Department of Mechanical Engineering Pohang University of Science and Technology San 31 Hyojadong Nam-ku, Pohang, Cyungbuk 790-784, Republic of Korea;

    Integrated Imaging Center The Johns Hopkins University 3400 N. Charles St., Baltimore, MD 21218, USA;

    Department of Electrical & Computer Engineering Department of Mechanical Engineering The Johns Hopkins University 3400 N. Charles St., Baltimore, MD 21218, USA;

    Department of Materials Science & Engineering The Johns Hopkins University 3400 N. Charles St., Baltimore, MD 21218, USA;

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