南京大学材料科学与工程系何程

xiayutian

何程，男，博士，南京大学现代工程与应用科学学院副研究员、副教授。在包括Nat. Phys. 、Nat. Commun. 、PNAS 、Nat. Mater. 、PRL 等国际高水平期刊上发表论文30 余篇，引用1000 余次，部分研究成果取得了广泛的学术影响。担任PPL, Nat. Commun. 等多个国际一流期刊审稿人。主持国家重点研发计划青年项目(原青年973)1项，国家自然科学基金项目2项。参与项目包括国家自然科学基金重大项目、重点项目，国家重大研发计划量子调控专项等。


何程        副研究员        
办公室地址：        唐仲英楼A207
Email： chenghe@nju.edu.cn

研究方向：
1、光、声子拓扑态；2、非互易光学；3、超构材料&变换光学；4、介电体超晶格。

个人简介：
2013-迄今 南京大学材料科学与工程系副研究员
2011-2013 美国西北大学机械工程系博士后
2006-2011 南京大学材料科学与工程系材料科学与工程专业博士
2004-2005 深圳三星视界有限公式 研究开发一科研究员
2000-2004 南京大学材料科学与工程系材料物理专业学士

科研成果
文章及专利:
1.Cheng He, Xiao-Chen Sun, Xiao-Ping Liu, Ming-Hui Lu, Yulin Chen, Liang Feng and Yan-Feng Chen, “Photonic topological insulator with broken time-reversal symmetry.” Proc. Natl. Acad. Sci.,113, 4924 (2016).
2.Cheng He, Zheng Li, Xu Ni, Xiao-Chen Sun, Si-Yuan Yu, Ming-Hui Lu, Xiao-Ping Liu and Yan-Feng Chen，Topological phononic states of underwater sound based on coupled ring resonators. Appl. Phys. Lett.108, 031904 (2016).
3.Yin Poo*,Cheng He*, Chao Xiao, Ming-Hui Lu, Rui-Xin Wu & Yan-Feng Chen, Manipulating one-way space wave and its refraction by time-reversal and parity symmetry breaking.Scientific Reports6, 29380 (2016). (*These authors contributed equally to this work.)
4.Cheng He, Liang Lin, Xiao-Ping Liu, Ming-Hui Lu, Yan-Feng Chen, Topological photonic states. International Journal of Modern Physics B28, 1441001 (2014). (invited review article)
5.Cheng He, Xiao-Chen Sun，Zhen Zhang, Chang-Sheng Yuan, Ming-Hui Lu, Yan-Feng Chen, Cheng Sun, Nonreciprocal resonant transmission/reflection based on a one-dimensional photonic crystal adjacent to the magneto-optical metal film. Optics Express21, 28933 (2013).
6.Cheng He, Xiao-Liu Zhang, Ming-Hui Lu, Liang Feng, and Yan-Feng Chen, “One-way cloak based on nonreciprocal photonic crystal.” Appl. Phys. Lett.99, 151112 (2011).
7.Cheng He, Ming-Hui Lu, Xin Heng, Liang Feng, and Yan-Feng Chen, “Parity-time electromagnetic diodes in a two-dimensional nonreciprocal photonic crystal.” Phys. Rev. B83, 075117 (2011).
8.Cheng He, Xiao-Lin Chen, Ming-Hui Lu, Xue-Feng Li, Wei-Wei Wan, Xiao-Shi Qian, Ruo-Cheng Yin, Yan-Feng Chen, “Tunable one-way cross-waveguide splitter based on gyromagnetic photonic crystal.” Appl. Phys. Lett.96, 111111 (2010).
9.Cheng He, Xiao-Lin Chen, Ming-Hui Lu, Xue-Feng Li, Wei-Wei Wan, Xiao-Shi Qian, Ruo-Cheng Yin，Yan-Feng Chen, “Left-handed and right-handed one-way edge modes in a gyromagnetic photonic crystal.” J. Appl. Phys. 107, 123117 (2010)
10.Cheng He, Ming-Hui Lu, Ruo-Cheng Yin, Tian Fan, and Yan-Feng Chen, “Chiral properties in a two-dimensional chiral polaritonic photonic crystal.” J. Appl. Phys.108, 073103 (2010).
11.Cheng He, Ming-Hui Lu, Wei-Wei Wan, Xue-Feng Li, and Yan-Feng Chen, “Influence of boundary conditions on the one-way edge modes in two-dimensional magneto-optical photonic crystals.” Solid State Commun.150, 1976 (2010).
12.Xue-Feng Li, Xu Ni, Liang Feng, Ming-Hui Lu, Cheng He, and Yan-Feng Chen, ”Tunable unidirectional sound propagation through a sonic-crystal-based acoustic diode.” Phys. Rev. Lett. 106, 084301 (2011). (cover feature)
13.Xu Ni, Cheng He, Xiao-Chen Sun, Xiao-ping Liu, Ming-Hui Lu, and Yan-Feng Chen, “Topologically protected one-way edge mode in networks of acoustic resonators with circulating air flow.” New Journal of Physics17, 5 (2015).
14.Si-Yuan Yu, Xu Ni, Ye-Long Xu, Cheng He, Priyanka Nayar, Ming-Hui Lu, Yan-Feng Chen, “Extraordinary acoustic transmission in a Helmholtz resonance cavity-constructed acoustic grating.” Chin. Phys. Lett.33, 044302 (2016)
15.Kun Jiang, Cheng He, Xiao-Ping Liu, Ming-Hui Lu, Bo Cui, and Yan-Feng Chen, “Circular-polarization-dependent mode hybridization and slow light in vertically coupled planar chiral and achiral plasmonic nanostructures.” J. Opt. Soc. Am. B32, 2088-2095 (2015)
16.Si-Yuan Yu, Qing Wang, Li-Yang Zheng, Cheng He, Xiao-Ping Liu, Ming-Hui Lu, and Yan-Feng Chen, “Acoustic phase-reconstruction near the Dirac point of a triangular phononic crystal.” Appl. Phys. Lett.106, 151906 (2015)
17.Ze-Guo Chen, Xu Ni, Ying Wu, Cheng He, Xiao-Chen Sun, Li-Yang Zheng, Ming-Hui Lu & Yan-Feng Chen,“Accidental degeneracy of double Dirac cones in a phononic crystal.” Scientific Reports4, 4613 (2014).
18.Yongjun Bao, Cheng He, Fan Zhou, Colin Stuart, and Chen Sun, “A realistic design of three-dimensional full cloak at terahertz frequencies.” Appl. Phys. Lett.101, 031910 (2012).
19.Ruo-Cheng Yin, Cheng He, Ming-Hui Lu, Yan-Qing Lu, and Yan-Feng Chen, “Polaritons in an artificial ionic-type crystal made of two-dimensional periodically inversed multi-domain ferroelectric crystals.” J. Appl. Phys.109, 064110 (2011).
20.Chang-Sheng Yuan, Han Tang, Cheng He, Xiao-Lin Chen, Xu Ni, Ming-Hui Lu, Yan-Feng Chen, Nai-Ben Ming, “Resonant optical transmission through a one-dimensional photonic crystal adjacent to a thin metal film.” Physica B406, 1983 (2011).
21.Ruo-Cheng Yin, Si-Yuan Yu, Cheng He, Ming-Hui Lu, and Yan-Feng Chen, “Bulk acoustic wave delay line in acoustic superlattice.” Appl. Phys. Lett.97, 092905 (2010).
22.尹若成，何程，陈延峰，卢明辉，陆延青，祝世宁，朱永元，闵乃本，一种基于介电体超晶格产生高频声波的方法，2009.09，中国，200910029984

coco2017

南京大学固体微结构物理国家重点实验室、现代工程与应用科学学院、人工微结构科学与技术协同创新中心的何程、陈延峰研究团队，在理论上设计和实验研制出三维声拓扑绝缘体，观测到了其中无能隙的二维狄拉克型表面色散和无能隙的一维拓扑棱态。该工作揭示出拓扑声子在三维微结构材料中边界局域的、单向的和无反射损耗的传播特性，为利用人工设计的对称性和三维声子晶体研制拓扑声学和自旋声学器件发展了新的原理。相关工作以"Acoustic analogues of three-dimensional topological insulators"为题于2020年5月9日在线发表在期刊《Nature Communications》（《自然·通讯》）杂志上。(https://www.nature.com/articles/s41467-020-16131-w )

       信息处理和存储技术的发展对集成器件的性能提出了更高的要求。在传统的集成器件中，由于加工过程中不可避免的缺陷和杂质，使得波在传输过程中存在着背向散射损耗，因而降低了器件的传输距离和效率。拓扑材料以其独特的缺陷免疫和背散射抑制特性为克服这一困难提供了方案。拓扑物理的研究始于电子系统，而近十余年来，研究人员将其推广到了光、声、机械等经典波领域，并且成功实现了多种类型的光/声拓扑态。比如背散射抑制和抗辐射损耗的光/声波导，任意形状的高效率、低阈值的拓扑激光等等。最近，三维声/光拓扑绝缘体备受关注。相比于二维系统，三维系统多出了一个空间自由度，具有更多的结构类型和对称操作可供选择与调控。此外，根据拓扑材料"体-边对应关系"，在三维拓扑绝缘体中，不仅可以得到拓扑保护的二维表面态（一阶声拓扑绝缘体），用于实现一些如折射、成像等一维波导无法实现的拓扑现象和功能；也可以得到更低维度的一维棱态（二阶）和零维角态（三阶）。这为多维度调控声波传播提供了新的可能。
       研究团队在前期二维声拓扑绝缘体取得突破后[Nat. Phys. 12, 1124 (2016)]，一直致力于三维声拓扑绝缘体的设计和研制。然而，实现三维声拓扑绝缘体的条件甚为苛刻，需要同时满足以下三个条件：1）在三维构建声人工自旋；2）破缺对称性以形成三维全带隙；3）改变层间和面内"原子"间的耦合以实现能带反转。前期的研究表明，仅通过二维结构的堆叠而构建三维拓扑声子晶体，可实现一些其它类型的三维声拓扑材料[Nat. Commun. 9, 4555 (2018)；Phys. Rev. Lett. 123, 195503 (2019)]，却很难同时满足上述三个条件，得到具有完全线性（狄拉克锥形）表面色散的三维声拓扑绝缘体。经过三年多的努力，研究团队摸索了一条"提高对称性—破缺对称性—再提高—再破缺"的设计方案和技术路线，精准地控制三维声拓扑能带结构，从而取得了突破。