氧化鋅之類石墨烯週期結構頻溝效應分析

蘇雋夫

doi:10.6827/NFU.2013.00063

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氧化鋅之類石墨烯週期結構頻溝效應分析

Band Gaps of Periodic Graphene-like Structure of ZnO

蘇雋夫 , Masters　　Advisor：黃自貴　　

繁體中文 DOI： 10.6827/NFU.2013.00063

石墨烯；聲子晶體； FBAR ； Bloch’s ；壓電材料；有限元素法； Graphene ； Phononic crystals ； film bulk acoustic resonator ； Bloch’s ； finite element modeling

Abstract │ Reference (44) │ Times Cited (1) │ Altmetrics

Abstract 〈TOP〉

Parallel Abstract 〈TOP〉

This study constructs a phononic crystal acoustic wave device that adopts a graphene-like structure and is composed of piezoelectric zinc oxide (ZnO) material. We employed the finiteelement method to determine periodic boundary conditions. Following Bloch’s theorem, we analyzed the acoustic wave propagation of the proposed graphene-like structure in the 2D and 3D frequency domain to understand the band gap effect and oscillation behavior. We also investigated the band gap variation of changing chain structure diameters, bonding rod widths between the atoms columns and the change in the number of edges to develop better surface acoustic wave device.

Three-dimensional aspects of a film bulk acoustic resonator (FBAR) as the main concept of the ZnO piezoelectric layer to the upper and lower electrodes (Au). Explore the piezoelectric layer thickness for 10 ?m supercell 5N × 3M periodic graphene-like structure (N: X direction of the cycle; M: Y direction cycle), the introduction of a single defect, dual defects and line defect structure is subjected to electric pole technology, the high frequency defects ultra flat-belt will even increase in the number, can be seen in different forms defect location and defect will affect the modal frequencies.

On the other hand, further discussion contains a metal electrode layer mass loading effect (Au), discovered graphene-like structures with the metal thickness scales gradually reduced, the band gap of the band edge frequency range linearly toward change, projected to be more tiny metal thickness scales corresponding to the band gap range.

Reference ( 44 ) 〈TOP〉

[2] Novoselov, K.S., Geim, A.K., Morozov, S.V., Katsnelson, M.I., Grigorieva, I.V., Dubonos, S.V., and Firsov, A.A., 2005, “Two Dimensional Gas of Massless Dirac Fermions in Graphene,” Nature 438, pp. 197-200.
連結：
[3] Kohlschutter, V., and Haenni, P., 1918, “Zur Kenntnis des Graphitischen Kohlenstoffs und der Graphitsaure,” Z. Anorg. Allg. Chem., 105(1), pp. 121–144.
連結：
[5] Ruess, G., and Vogt, F., 1948, “Hochstlamellarer Kohlenstoff aus Graphitoxyhydroxyd,” Monatshefte fur Chemie 78(3-4), pp. 222–242.
連結：
[6] Geim, A.K., and Novoselov, K.S., 2007, “The rise of graphene,” Nature Materials 6(3), pp. 183–191.
連結：
[9] Berger, C., Song, Z., Li, T., Li, X., Ogbazghi, A.Y., Feng, R., Dai, Z., Marchenkov, A.N., Conrad, E.H., First, P.H., and De Heer, W.A., 2004, “Ultrathin Epitaxial Graphite: 2D Electron Gas Properties and a Route toward Graphene-based Nanoelectronics,” The Journal of Physical Chemistry B 108(52), pp. 19912-6.
連結：

Times Cited (1) 〈TOP〉

胡慎顯(2014)。類石墨烯結構之氧化鋅壓電元件設計與製作。虎尾科技大學機械設計工程研究所學位論文。2014。1-69。

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