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Adjustable stiffness of individual piezoelectric nanofibers by electron beam polarization
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10.1063/1.3660226
/content/aip/journal/apl/99/19/10.1063/1.3660226
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/19/10.1063/1.3660226
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) The method of the electron beam induced polarization of an individual PZT nanofiber.

Image of FIG. 2.
FIG. 2.

(Color online) (a) The SEM image of an individual PZT nanofiber deposited on the micro scale islands. (b) The SEM image of a single PZT nanofiber fixed and lifted by a tungsten tip, and the inset in (b) shows the experiment set up to induce the vibration of PZT nanofibers. (c) The SEM image of a PZT nanofiber oscillating under an applied electric field. (d) The upper plot is the 1st harmonic resonant frequencies (f 1) for fibers of various lengths. The lower plot is the calculated Young’s modulus (Y) of PZT nanofibers with various lengths.

Image of FIG. 3.
FIG. 3.

(Color online) (a) The 1st harmonic resonant frequencies (f 1) shift during 30 min of electron beam exposure. (b) The corresponding Young’s modulus (Y) and the fitted curve to a power function. (c) The plot shows the two resonant modes after the 30 min exposure, and the inset in (c) shows the vibration direction according to the polarized direction. (d) Two different resonant modes due to polarization. The left figure shows the vibrations in the vertical resonant mode. The right figure shows the same sample vibrating in the horizontal resonant mode.

Image of FIG. 4.
FIG. 4.

(Color online) The plot of calculated Young’s modulus as a function of electron beam exposure time. The dotted lines indicate the beginning of a new session after allowing the system to rest overnight with no exposure.

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/content/aip/journal/apl/99/19/10.1063/1.3660226
2011-11-07
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Adjustable stiffness of individual piezoelectric nanofibers by electron beam polarization
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/19/10.1063/1.3660226
10.1063/1.3660226
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