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Research Papers

Band Gaps of a Two-Dimensional Periodic Graphenelike Structure

[+] Author and Article Information
Zi-Gui Huang

Associate Professor
e-mail: zghuang0119@nfu.edu.tw

Chun-Fu Su

Department of Mechanical Design Engineering
National Formosa University,
No. 64, Wenhua Rd. Huwei Township,
Yun-lin County 632, Taiwan

1Corresponding author.

Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received April 28, 2012; final manuscript received November 28, 2012; published online June 6, 2013. Assoc. Editor: Mahmoud Hussein.

J. Vib. Acoust 135(4), 041002 (Jun 06, 2013) (8 pages) Paper No: VIB-12-1122; doi: 10.1115/1.4023822 History: Received April 28, 2012; Revised November 08, 2012

This study constructs a new phononic crystal acoustic wave device that adopts a graphenelike structure and is composed of piezoelectric zinc oxide (ZnO) material. We employed the finite-element method to determine periodic boundary conditions. Following Bloch's theorem, we analyzed the acoustic wave propagation of the proposed graphenelike structure in the frequency domain to understand the band gap effect and oscillation behavior. We also investigated the band gap variation and modal distortion tendencies of the piezoelectric ZnO material in the two-dimensional graphenelike structure under the condition of changing chain structure diameters and bonding rod widths between the atoms columns to develop an optimal acoustic wave device.

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References

Figures

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Fig. 1

(a) The periodic two-dimensional graphenelike structure; (b) the Brillouin region of the rectangular lattice

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Fig. 2

Diagram of the two-dimensional graphenelike structure

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Fig. 3

The boundary settings of the two-dimensional graphenelike structure

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Fig. 4

The error of the element number to the modal value

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Fig. 5

The convergence tendency of the element number of the two-dimensional graphenelike structure

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Fig. 6

Dispersion relationship with chain atom diameter = 0.4 mm

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Fig. 7

Dispersion relationship with chain atom diameter = 0.5 mm

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Fig. 8

Dispersion relationship with chain atom diameter = 0.6 mm

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Fig. 9

Dispersion relationship with chain atom diameter = 0.7 mm

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Fig. 10

Dispersion relationship with chain atom diameter = 0.8 mm

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Fig. 11

Dispersion relationship with chain atom diameter = 0.9 mm

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Fig. 12

Dispersion relationship with chain atom diameter = 1.0 mm

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Fig. 13

Band gap distribution of the two-dimensional graphenelike structure in various sizes of chain atom diameter d

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Fig. 14

Distribution of the normalized band gap width

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Fig. 15

Band gap distribution of the two-dimensional graphenelike structure in various sizes of bonding rod width W

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Fig. 16

The enlarge plot of dispersion relationship (Fig. 9) with chain atom diameter = 0.7 mm

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Fig. 17

The corresponding oscillation structure of L1 in Fig. 16

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Fig. 18

The corresponding oscillation structure of L2 in Fig. 16

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Fig. 19

The corresponding oscillation structure of L3 in Fig. 16

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Fig. 20

The corresponding oscillation structure of L4 in Fig. 16

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