張向東

1998年5月至2002年4月，在香港科技大學物理系作訪問學者，從事博士后研究。

2002年8月，任北京師範大學物理系教授、博士生導師。

2011年9月，任北京理工大學物理學院教授。

科研領域

多年來一直致力於光子晶體和低維納米結構的物理特性及其應用研究，並作出了多項創新成果。

主要貢獻

首次在光子准晶中觀察到了負折射現象，並在國際上率先利用二維光子晶體超稜鏡實現了對兩種極化波的同時聚集成像。通過嚴格數值模擬首先在聲子晶體中觀察到負折射現象，並發現了自旋子的負折射。在無序動力學中率先從理論上揭示出准一維到三維的動力學交叉行為，后被實驗所證實。發展出了在強局域化中分析弱局域化的統一理論。提出了利用帶邊場"工程"光子帶隙的辦法，並被實驗證實。在12重准晶中發現了大的絕對光子帶隙，率先在鐵磁藕合雙結中發現超過90%的巨隧穿磁電阻。已在國內外核心期刊上發表論文60餘篇，其中有34篇發表在Phys.Rev.Lett、Appl.Phys.Lett.和Phys.Rev.三個期刊上。論文被SCI引用近500次，其中被他人引用超過350次，單篇他人最高引用達到100次。

科研方向

（1）光子晶體及其無序系統中的物理特性研究。

（2）波在左手材料中傳播反常特性研究。

（3）介觀物理研究（主要側重與自旋相關的散射、輸運和光學特性）。

科研項目

主持國家自然科學基金波在光子晶體中傳播的反常特性及其應用研究(No.10674017)。

主持教育部《新世紀優秀人才支持計劃》基金人工周期結構中波傳播物理特性研究。

主持國家自然科學基金光子晶體中磁場可控導波(No.10374009)。

主持教育部優秀青年教師基金長波傳播反常特性研究。

主持高等學校博士學科點專項科研基金光子晶體及其無序系統中波傳導物理特性研究。

主持並完成國家教委留學回國基金波在有序和無序介質中傳播。

參加國家973人工帶隙材料的物理機制、製備及應用研究(No.2001CB610402)。

代表性工作

Xiangdong Zhang, Negative refraction of spintronics and spin beam splitter, Appl. Phys. Lett. 88, 052114 (2006).

Jing Wang, Xiangdong Zhang et. al., Tunable Casimir forces by means of the external magnetic field, Phys. Rev. A. 73，042103 (2006).

Z. Feng, Xiangdong Zhang, ., Experimental demonstration of non-near-field image governed by negative refraction law, Phys. Rev. B. 73， 075118 (2006).Z. Feng, Xiangdong Zhang, ., Negative Refraction and Imaging by Twelve-Fold-Symmetry Quasicrystals, Phys. Rev. Lett. 94，247402 (2005).

Xiangdong Zhang, Acoustic resonant transmission through acoustic gratings with very narrow slits: Multiple-scattering numerical simulations, Phys. Rev. B71，241102 (2005) (Rapid Communication).

Xiangdong Zhang, Tunable non-near-field focus and imaging of unpolarized electromagnetic wave, Phys. Rev. B71, 235103 (2005).

Xiangdong Zhang, Effect of interface and disorder on the far-field image in a two-dimensional photonic-crystal-based flat lens, Phys. Rev. B71, 165116 (2005).

Xiangdong Zhang and Lie-Ming Li, Creating all-angle negative refraction by using insertion, Appl. Phys. Lett. 86, 121103 (2005).

Xiangdong Zhang, Subwavelength far-field resolution in a square two-dimensional photonic crystal, Phys. Rev. E71, 037601 (2005).

C. Qiu, Xiangdong Zhang and Z. Liu, Left-handed behavior and non-near-field imaging effect of acoustic wave in two-dimensional sonic crystal, Phys. Rev. B71, 054302 (2005).

Xiangdong Zhang, Absolute negative refraction andimaging of unpolarized electromagnetic waves by two-dimensional photonic crystals, Phys. Rev. B70, 205102 (2004).

Xiangdong Zhang, Image resolution depending on slab thickness and object distance in a two-dimensional photonic-crystal-based superlens, Phys. Rev. B70, 195110 (2004).

Q. Chu, Xiangdong Zhang, and Z-Q. Zhang, Calculation of enhanced scattering peaks in disordered thin slabs with internal reflections, Phys. Rev. B70, 125110 (2004).

Xiangdong Zhang and Z.Y.Liu, Negative refraction of acoustic waves in two-dimensional phononic crystals, Appl. Phys. Lett. 8 5, 341(2004).

S.K.Cheung, Xiangdong Zhang, Z-Q Zhang ., Impact of weak localization in the time domain, Phys. Rev. Lett. 9 2, 173902 (2004).

K-C Kwan, Xiangdong Zhang, Zhaoqing Zhang and C.T Chan, Effects due to disorder on photonic crystal-based waveguides, Appl. Phys. Lett. 82, 4 414 (2003).

P. Xie, Z-Q Zhang and Xiangdong Zhang, Gap solitons and soliton trains in finite-sized two-dimensional periodic and quasiperiodic photonic crystals, Phys. Rev. E63, 026607(2003).

Xiangdong Zhang, Zhao-Qing Zhang, Wave transport through thin slabs of random media with internal reflection: Ballistic to diffusive transition, Phys. Rev.E66, 016622(2002).

Xiangdong Zhang , Zhao-Qing Zhang: Coherent backscattering of light in a strong localization regime, Phys. Rev. B65, 155208(2002).

Xiangdong Zhang, Zhao-Qing Zhang, Non-Rayleigh distribution of reflected speckle intensities from localized states inside the gap of disordered photonic crystals, Phys. Rev. B65, 245115(2002).

Xiangdong Zhang, Zhao-Qing Zhang and C.T.Chan, Absolute photonic band gaps in 12-fold symmetric photonic quasicrystals, Phys. Rev. B63, 081105(2001)( Rapid Communication ).

Xiangdong Zhang, Lie-Ming Li, Zhao-Qing Zhang and C.T.Chan, The study of surface states in two-dimensional metallodielectric photonic crystals studied by a multiple-scattering method, Phys. Rev. B63, 125114(2001).

Yun Lai, Xiangdong Zhang and Zhaoqing Zhang, Engineering acoustic band gaps, Appl. Phys. Lett. 79, 3224(2001).

Zhi-Yuan Li, Xiangdong Zhang, and Zhao-Qing Zhang，Disordered photonic crystals understood by a perturbation formalism, Phys. Rev. B61, 15738(2000).

Xiangdong Zhang, Zhao-Qing Zhang, Lie-Ming Li, C.Jin, D. Zhang, B. Man, and B. Cheng，Enlarging a photonic band gap by using insertion, Phys. Rev. B61, 1892(2000).

Xiangdong Zhang and Zhao-Qing Zhang，Creating a gap without symmetry breaking in two-dimensional photonic crystals, Phys. Rev. B61, 9847(2000).

L-M Li, Z-Q Zhang, and Xiangdong Zhang, Transmission and absorption properties of two-dimensional metallic photonic-band-gap materials, Phys. Rev. B58, 15589(1998).

Xiangdong Zhang, Bozang Li, Wushou Zhang and Fu-Cho Pu, Magnetoresistance and exchange coupling in the ferromagnetic tunnel junction with ferromagnetic layers of finite thichness, Phys. Rev. B57, 1090(1998).

Xiangdong Zhang, Bozang Li, Gang Sun and Fu-Cho Pu, Spin polarized tunneling and magnetoresistance in ferromagnet/insulator (semiconductor) single and double tunnel junctions subjected to an electric field, Phys. Rev. B57, 5484(1997).

Xiangdong Zhang, Bozang Li and Fu-Cho Pu: Magnetic Excitation in the Hubbard-Hirsch Model, Phys. Rev. B54, 44 (1996).

已培養博士研究生20餘名，碩士研究生10多名，目前他們在高校、科研機構、銀行、公司等行業的多種崗位上工作。

講授了多門本科生和研究生課程，《力學》《高等量子力學》《基礎物理》《數理與工程》《物理前沿選講》等。