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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 | ?he Research of Optimal Robot in Complex Motion Planning for Environment显示文摘 | PIAO Songhao ZHONG Qiubo LIU Yaqi | 2011 | Chinese Journal of Electronics2011，20，4： | 2 |
| 3 | 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 |
| 4 | Imaging theory and resolution improvement of two-photon confocal microscopy显示文摘 | Tang Zhilie Yang Chuping Pei Hongjin Liang Ruisheng Liu Songhao | 2002 | Science in China Series A: Mathematics2002，，11： | 1 |
| 5 | 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 |
| 6 | Analytic solutions of self-similar pulse based on Ginzburg-Landau equation with constant coefficients显示文摘Based on the constant coefficients of Ginzburg-Landau equation that considers the influence of the doped fiber retarded time on the evolution of self-similar pulse,the parabolic asymptotic self-similar solutions were obtained by the symmetry reduc-tion algorithm. The parabolic asymptotic amplitude function,phase function,strict linear chirp function and the effective temporal pulse width of self-similar pulse are given in this paper. And these theoretical results are consistent with the numerical simulations. | FENG Jie XU WenCheng LI ShuXian LIU SongHao | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，3： | 1 |
| 7 | Two-dimensional entropy model for video shot partitioning显示文摘A shot presents a contiguous action recorded by an uninterrupted camera operation and frames within a shot keep spatio-temporal coherence. Segmenting a serial video stream file into meaningful shots is the first pass for the task of video analysis,content-based video understanding. In this paper,a novel scheme based on improved two-dimensional entropy is proposed to complete the partition of video shots. Firstly,shot transition candidates are detected using a two-pass algorithm: a coarse searching pass and a fine searching pass. Secondly,with the character of two-dimensional entropy of the image,correctly detected transition candidates are further classified into different transition types whereas those falsely detected shot breaks are distinguished and removed. Finally,the boundary of gradual transition can be precisely located by merging the characters of two-dimensional entropy of the image into the gradual transition. A large number of video sequences are used to test our system performance and promising results are obtained. | ZHU SongHao LIU YunCai | 2009 | Science in China(Series F)2009，52，2： | 1 |
| 8 | 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 |
| 9 | Research of Cooperative Behavior in Multi-Robots System显示文摘 | PIAO Songhao ZHONG Qiubo LIU Yaqi CAI Zesu | 2011 | Chinese Journal of Electronics2011，20，1： | 1 |
| 10 | Study of synthesizing process for nanosized silicon powder by laser显示文摘 | Songhao Liu Yanbiao Mei | 1995 | Applicational Laser1995，，1： | 1 |
| 11 | Ray traces in graded-index optical fibers显示文摘 | Wang An Liu Songhao | 1986 | Acta Optica Sinica1986，6，2： | 1 |
| 12 | 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 |
| 13 | Time-resolved Fluorescence Decay Study of Hematoporphyrin Derivative显示文摘Timefluorescence decays were first performed on hematoporphyrin derivative laser No.3 in buffer at different micelles concentration.The flu.orescence lifetime constants,measured with a time-correlated single photon counting system;could be fitted by two or three exponential components with different relative peak amplitudes depending on the observation wavelength^thus indicating the presence of different emitting molecular species and/or of molecular species in different aggregational states. | LIU Wenqing XIA Yuxing LIU Songhao RRamponi RCubeddu | 1991 | Chinese Physics Letters1991，8，1： | 0 |
| 14 | Soliton Compression Due to Cross-Phase-Modulation in the Normal Dispersive Optical Fibers显示文摘A new method is proposed to compress soliton pulses in the normal dispersive optical fibers through cross-phase-modulation of two pulses.The optimum fiber length for optimum compression is obtained for given values of the pulses and fiber parameters. | XU Wencheng LIU Junmin LIAO Changjun LIU Songhao | 1995 | Chinese Physics Letters1995，12，8： | 0 |
| 15 | 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 |
| 16 | Petrogenesis and Geodynamic Implications of Early Cretaceous(~130 Ma)Magmatism in the Baingoin Batholith,Central Tibet:Products of Subducting Slab Rollback显示文摘The Baingoin batholith is one of the largest granitic plutons in the North Lhasa terrane.Its petrogenesis and tectonic setting have been studied for decades,but remain controversial.Here we report data on geochronology,geochemistry and isotopes of Early Cretaceous granitoids within the Baingoin batholith,which provide more evidence to uncover its petrogenesis and regional geodynamic processes.The Early Cretaceous magmatism yields ages of 134.4–132.0 Ma and can be divided into I-type,S-type and highly fractionated granites.The I-and S-type granites exhibit medium SiO2,high K_(2)O/Na_(2)O with negativeεNd(t)andεHf(t)values,whereas,the albite granites have very high SiO_(2)(79.04%–80.40%),very low K_(2)O/N_(2)O,negativeεNd(t)and a large variation inεHf(t).Our new data indicate that these granitoids are derived from unbalanced melting in a heterogeneous source area.The granodiorites involved had a hybrid origin from partial melting of basalt-derived and Al-rich rocks in the crust,the porphyritic monzogranites being derived from partial melting of pelitic rocks.The albite granites crystallized from residual melt separated from K-rich magma within the‘mush’process and underwent fractionation of K-feldspar.We believe that the Early Cretaceous magmatism formed in an extensional setting produced by the initial and continuous rollback of a northward-subducting slab of the NTO. | LI Faqiao TANG Juxing WANG Nan LIU Zhibo SONG Yang ZHANG Jing MA Xudong FU Bin LI Haifeng HAN Songhao | 2022 | Acta Geologica Sinica(English Edition)2022，96，6： | 0 |
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