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| 1 | Suppression of Raman Self-Frequency Shift of Soliton Propagation in Single Mode Optical Fiber显示文摘A novel idea is proposed to suppress the soliton self-frequency shift of femtosecond soliton pulse in dispersion-decreasing fibers.The expression of the soliton self-frequency shift as a function of the pulse width and the fiber dispersion parameter is derived.The numerical simulation is also given,and is in agreement with analytical results. | XU Wencheng GUO Qi LIAO Changjun LIU Songhao | 1995 | Chinese Physics Letters1995，12，2： | 3 |
| 2 | Reactive Effect of Low Intensity He-Ne Laser upon Damaged Ultrastructure of Human Erythrocyte Membrane in Fenton System by Atomic Force Microscopy显示文摘发现 modulating 的机制有低紧张 He-Ne 激光行动的红血球的 deform 能力,我们在人的红血球的超微结构上学习了低紧张 He-Ne 激光的效果膜。红血球在暴露他们到低紧张 He-Ne 激光前从 aFenton 反应系统与自由激进分子一起被对待。损坏红血球膜的超微结构被原子力量显微镜学检验。结果证明红血球膜变得很不平,膜的表面上的分子在与自由激进分子一起对待以后集合了进不同大小尺寸的粒子。在非照耀的组和 He-Ne 激光比较分子的粒子的会众的度照耀( 9 mW 和 18 mW )组织,我们发现在激光的分子的粒子的平均尺寸照耀组在非照耀的组是比那小的,显示低紧张激光让了修理功能到红血球膜的损坏由自由激进分子生产了。 | Yanhong CU Zhouyi GUO Yanping ZHAO Ying ZHENG Yanfang QIAO Jiye CAI Songhao LIU | 2007 | Acta Biochimica et Biophysica Sinica2007，39，7： | 2 |
| 3 | Pressure-induced robust emission in a zero-dimensional hybrid metal halide (C_(9)NH_(20))_(6)Pb_(3)Br_(12)显示文摘Zero-dimensional(0D)hybrid metal halides are under intensive investigation owing to their unique physical properties,such as the broadband emission from highly localized excitons that is promising for white-emitting lighting.However,fundamental understanding of emission variations and structure–property relationships is still limited.Here,by using pressure processing,we obtain robust exciton emission in 0D(C_(9)NH_(20))_(6)Pb_(3)Br_(12) at room temperature that can survive to 80 GPa,the recorded highest value among all the hybrid metal halides.In situ experimental characterization and first-principles calculations reveal that the pressure-induced emission is mainly caused by the largely suppressed phonon-assisted nonradiative pathway.Lattice compression leads to phonon hardening,which considerably weakens the exciton–phonon interaction and thus enhances the emission.The robust emission is attributed to the unique structure of separated spring-like[Pb_(3)Br_(12)]^(6−)trimers,which leads to the outstanding stability of the optically active inorganic units.Our findings not only reveal abnormally robust emission in a 0D metal halide,but also provide new insight into the design and optimization of local structures of trimers and oligomers in lowdimensional hybrid materials. | Mengting Chen Songhao Guo Kejun Bu Sujin Lee Hui Luo Yiming Wang Bingyan Liu Zhipeng Yan Hongliang Dong Wenge Yang Biwu Ma Xujie Lü | 2021 | Matter and Radiation at Extremes2021，6，5： | 1 |
| 4 | Pressure-induced Lifshitz transition in the type Ⅱ Dirac semimetal PtTe_2显示文摘Numerous exotic properties have been discovered in Dirac Semimetals(DSMs) and Weyl Semimetals(WSMs). In a given DSM/WSM, the Dirac/Weyl nodes usually coexist with other bulk states, making their respective contribution elusive. In this work, we distinguish the role of bulk states from the tilted Dirac nodes on the transport properties in DSMs. Specifically, we applied pressure to a type-II DSM material, PtTe2, and studied its pressure modified electronic and lattice structure systematically by using in situ transport measurements and X-ray diffraction(XRD). A pressure-induced transition at about 20 GPa is revealed in the transport properties, while the layered lattice structure is robust against pressure as illustrated in XRD measurement results.Density functional theory(DFT) calculations suggest that this is originated from the Lifshitz transition in the bulk states. Our findings provide evidence to identify the bulk states' influence on transport from the topologically-protected DSM states in the DSM material. | FengLiang Liu JiaHeng Li KeNan Zhang Shang Peng HuaQing Huang MingZhe Yan NaNa Li Qian Zhang SongHao Guo XuJie Lü Peng Cai LiFeng Yin ShuYun Zhou WenHui Duan Jian Shen WenGe Yang | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，4： | 1 |
| 5 | Regulating off-centering distortion maximizes photoluminescence in halide perovskites显示文摘Metal halide perovskites possess unique atomic and electronic configurations that endow them with high defect tolerance and enable high-performance photovoltaics and optoelectronics.Perovskite light-emitting diodes have achieved an external quantum efficiency of over 20%.Despite tremendous progress,fundamental questions remain,such as how structural distortion affects the optical properties.Addressing their relationships is considerably challenging due to the scarcity of effective diagnostic tools during structural and property tuning as well as the limited tunability achievable by conventional methods.Here,using pressure and chemical methods to regulate the metal off-centering distortion,we demonstrate the giant tunability of photoluminescence(PL)in both the intensity(>20 times)and wavelength(>180 nm/GPa)in the highly distorted halide perovskites[CH_(3)NH_(3)GeI_(3),HC(NH_(2))2GeI_(3),and Cs Ge I_(3)].Using advanced in situ high-pressure probes and first-principles calculations,we quantitatively reveal a universal relationship whereby regulating the level of off-centering distortion towards 0.2 leads to the best PL performance in the halide perovskites.By applying this principle,intense PL can still be induced by substituting CH_(3)NH_(3)^(+)with Cs^(+)to control the distortion in(CH_(3)NH_(3))_(1-x)Cs_(x)GeI_(3),where the chemical substitution plays a similar role as external pressure.The compression of a fully substituted sample of CsGe I_(3)further tunes the distortion to the optimal value at 0.7 GPa,which maximizes the emission with a10-fold enhancement.This work not only demonstrates a quantitative relationship between structural distortion and PL property of the halide perovskites but also illustrates the use of knowledge gained from high-pressure research to achieve the desired properties by ambient methods. | Xujie Lv Constantinos Stoumpos Qingyang Hu Xuedan Ma Dongzhou Zhang Songhao Guo Justin Hoffman Kejun Bu Xiaofeng Guo Yingqi Wang Cheng Ji Haijie Chen Hongwu Xu Quanxi Jia Wenge Yang Mercouri G.Kanatzidis Ho-Kwang Mao | 2021 | National Science Review2021，8，9： | 1 |
| 6 | Evolution of solitons of nonlinear Schr?dinger equation with variable parameters显示文摘 | Shuangchun Wen Wencheng Xu Qi Guo Songhao Liu | 1997 | Science in China Series A: Mathematics1997，，12： | 1 |
| 7 | A theoretical analysis on second harmonic generation for transverse and longitudinal slice collagen fiber显示文摘Microscopic imaging based on second-harmonic generation has been proving to be a powerful tool for biomedical studies, especially in that tissues with | Zhengfei Zhuang Xiaoyuan Deng Zhouyi Guo Songhao Liu MOE Key Laboratory of Laser Life Science, South China Normal University, Guangzhou 510631, China | 2009 | 生物物理学报2009，25，S1： | 0 |
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