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| 1 | High-average-power, high-repetition-rate tunable terahertz difference frequency generation with GaSe crystal pumped by 2 μm dual-wavelength intracavity KTP optical parametric oscillator显示文摘We have demonstrated a high-average-power,high-repetition-rate optical terahertz(THz)source based on difference frequency generation(DFG)in the GaSe crystal by using a near-degenerate 2μm intracavity KTP optical parametric oscillator as the pump source.The power of the 2μm dual-wavelength laser was up to 12.33 W with continuous tuning ranges of 1988.0–2196.2 nm/2278.4–2065.6 nm for two waves.Different GaSe cystal lengths have been experimentally investigated for the DFG THz source in order to optimize the THz output power,which was in good agreement with the theoretical analysis.Based on an 8 mm long GaSe crystal,the THz wave was continuously tuned from 0.21 to 3 THz.The maximum THz average power of 1.66μW was obtained at repetition rate of 10 kHz under 1.48 THz.The single pulse energy amounted to 166 pJ and the conversion efficiency from 2 μm laser to THz output was 1.68×10^(-6).The signal-to-noise ratio of the detected THz voltage was 23 dB.The acceptance angle of DFG in the GaSe crystal was measured to be 0.16°. | DEXIAN YAN YUYE WANG DEGANG XU PENGXIANG LIU CHAO YAN JIA SHI HONGXIANG LIU YIXIN HE LONGHUANG TANG JIANCHEN FENG JIANQIN GUO WEI SHI KAI ZHONG YUEN H.TSANG JIANQUAN YAO | 2017 | Photonics Research2017，5，2： | 5 |
| 2 | Hybrid integrated low-noise linear chirp frequency-modulated continuous-wave laser source based on self-injection to an external cavity显示文摘A hybrid integrated low-noise linear chirp frequency-modulated continuous-wave(FMCW)laser source with a wide frequency bandwidth is demonstrated.By employing two-dimensional thermal tuning,the laser source shows frequency modulation bandwidth of 10.3 GHz at 100 Hz chirped frequency and 5.6 GHz at 1 kHz chirped frequency.The intrinsic linewidth of 49.9 Hz with 42 GHz continuous frequency tuning bandwidth is measured under static operation.Furthermore,by pre-distortion linearization of the laser source,it can distinguish 3 m length difference at 45 km distance in the fiber length measurement experiment,demonstrating its application potential in ultra-long fiber sensing and FMCW light detection and ranging. | LIWEI TANG HONGXIANG JIA SHUAI SHAO SIGANG YANG HONGWEI CHEN MINGHUA CHEN | 2021 | Photonics Research2021，9，10： | 3 |
| 3 | Machining Deformation Prediction of Thin-Walled Part Based on Finite Element Analysis显示文摘For the problems of machining distortion and the low accepted product during milling process of aluminum alloy thin-walled part,this paper starts from the analysis of initial stress state in material preparation process,the change process of residual stress within aluminum alloy pre-stretching plate is researched,and the distribution law of residual stress is indirectly obtained by delamination measurement methods,so the effect of internal residual stress on machining distortion is considered before finite element simulation. Considering the coupling effects of residual stress,dynamic milling force and clamping force on machining distortion,a threedimensional dynamic finite element simulation model is established,and the whole cutting process is simulated from the blank material to finished product,a novel prediction method is proposed,which can availably predict the machining distortion accurately. The machining distortion state of the thin-walled part is achieved at different processing steps,the machining distortion of the thin-walled part is detected with three coordinate measuring machine tools,show that the simulation results are in good agreement with experimental data. | Hongxiang Wang Yabin Tang Zhanshan Liu Shi Gao | 2015 | Journal of Harbin Institute of Technology(New Series)2015，22，4： | 2 |
| 4 | A consistent return mapping algorithm for pressure-dependent elastoplastic Cosserat continua and modeling of strain localization 显示文摘 | LI Xikui TANG Hongxiang | 2005 | Computers and Structures2005，83，1： | 1 |
| 5 | A consistent return mappingalgorithm for pressure-dependent elastoplastic Cosseratcontinua and modeling of strain localization 显示文摘 | Li Xikui Tang Hongxiang | 2005 | Com-puters and Structures2005，83，1： | 1 |
| 6 | A consistent return mapping algorithm for pressure-dependent elastoplastic Cosserat continua and modeling of strain localization显示文摘 | Li Xikui Tang Hongxiang | 2005 | Computers & Structures2005，83，1： | 1 |
| 7 | A consistent return mapping algorithm for pressure-dependent elastoplastic Cosserat continua and modelling of strain localisation显示文摘 | Xikui Li Hongxiang Tang | 2004 | Computers and Structures2004，，1： | 1 |
| 8 | A novel fuzzy soft set approach in decision making based on grey relational analysis and Dempster-Shafer theory of evidence显示文摘 | Tang Hongxiang | 2015 | Applied Soft Computing2015，31，： | 1 |
| 9 | A consistent return mapping algorithm for ressure-dependent elastoplastic Cosserat continua and modeling of strain localisation显示文摘 | Xikui Li Hongxiang Tang | 2005 | Computers and Structures2005，83，： | 1 |
| 10 | Manipulations of micro/nanoparticles using gigahertz acoustic streaming tweezers显示文摘Contactless acoustic manipulation of micro/nanoscale particles has attracted considerable attention owing to its near independence of the physical and chemical properties of the targets,making it universally applicable to almost all biological systems.Thin-film bulk acoustic wave(BAW)resonators operating at gigahertz(GHz)frequencies have been demonstrated to generate localized high-speed microvortices through acoustic streaming effects.Benefitting from the strong drag forces of the high-speed vortices,BAW-enabled GHz acoustic streaming tweezers(AST)have been applied to the trapping and enrichment of particles ranging in size from micrometers to less than 100 nm.However,the behavior of particles in such 3D microvortex systems is still largely unknown.In this work,the particle behavior(trapping,enrichment,and separation)in GHz AST is studied by theoretical analyses,3D simulations,and microparticle tracking experiments.It is found that the particle motion in the vortices is determined mainly by the balance between the acoustic streaming drag force and the acoustic radiation force.This work can provide basic design principles for AST-based lab-on-a-chip systems for a variety of applications. | Hang Wu Zifan Tang Rui You Shuting Pan Wenpeng Liu Hongxiang Zhang Tiechuan Li Yang Yang Chongling Sun Wei Pang Xuexin Duan | 2022 | Nanotechnology and Precision Engineering2022，5，2： | 1 |
| 11 | Surface observations and material removal mechanisms in rotary ultrasonic machining of brittle material 显示文摘 | Lv Dongxi Wang Hongxiang Tang Yongjian | 2012 | Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture2012，226，9： | 1 |
| 12 | Improvement effects of vibration on cutting force in rotary ultrasonic machining of BK7 glass显示文摘 | Dongxi Lv Yanhua Huang Hongxiang Wang Yongjian Tang Xiangchao Wu | 2013 | Journal of Materials Processing Tech2013，，9： | 1 |
| 13 | Influences of vibration on surface formation in rotary ultrasonic machining of glass BK7显示文摘 | Dongxi Lv Hongxiang Wang Yongjian Tang Yanhua Huang Zhiping Li | 2013 | Precision Engineering2013，，： | 1 |
| 14 | A consistent return mapping algorithm for pressure-dependent elastoplastic Cosserat continua and modelling of strain localisation显示文摘 | Li Xikui Tang Hongxiang | 2005 | Computers & Structures2005，83，1： | 1 |
| 15 | In Situ Monitoring of Transmetallation in Electric Potential-Promoted Oxidative Coupling in a Single-Molecule Junction显示文摘To monitor and investigate chemical reactions in real time and in situ is a long-standing,challenging goal in chemistry.Herein,an electric potential-promoted oxidative coupling reaction of organoboron compounds without the addition of base is reported,and the transmetallation process involved is monitored in real time and in situ with the scanning tunneling microscopy break single-molecule junctions(STMBJ)technique.We found that the electric potential applied determined the transmetallation.At low-bias voltage,the first-step transmetallation process occurred and afforded Au─C-bonded aryl gold intermediates.The electronic properties of organoboron compounds have a strong influence on the transmetallation process,and electron-rich compounds facilitate this transformation.At high-bias voltage,the second-step transmetallation process took place,and the corresponding intermediate(highly reactive diaryl metal complex)was detected with the assistance of Pd(OAc)_(2).Our work demonstrates the applications of STMBJ on in situ monitoring and catalyzing of chemical reactions and provides a new methodology to fabricate singlemolecule devices. | Yunpeng Li Chengxi Zhao Rui Wang Ajun Tang Wenjing Hong Dahui Qu He Tian Hongxiang Li | 2023 | CCS Chemistry2023，5，1： | 0 |
| 16 | Defoliation in Flue-cured Tobacco and Its Reasons显示文摘The flue-cured tobacco G80 is not only one of the characteristic varieties in Changsha,but also indispensable raw materials for the series of Baisha cigarette. Defoliation during the late stage of growth seriously reduces the yield and quality of tobacco,and limits the popularization and application of G80. In this paper,in order to investigate the reasons for the defoliation of G80,the transverse section structure,cellulose content and differential proteins of leaf major veins were analyzed. The results revealed that the autolysis and collapse of parenchyma cells is the main cause of defoliation,and fungal infection is a factor inducing the autolysis of parenchyma cells. Application of bud suppression agent is one of the main ways to prevent fungal infection. The low cellulose content,low synthetic ability of xylan and pectin,the low removal ability of abnormal protein and low immune responsiveness are the inner reason for defoliation of flue-cured tobacco G80. | Chungui TANG Fan LI Hongwu YANG Pengfeng CHEN Li LI Jiamei LI Xinjian CHEN Hongxiang GUO Weiqun LIU | 2017 | Agricultural Biotechnology2017，6，3： | 0 |
| 17 | Rearranged 19-nor-7,8-seco-labdane diterpenoids and Diels-Alder cycloadducts from the Chinese liverwort Pallavicinia ambigua:Structural elucidation,photoinduced rearrangement,and cytotoxic activity显示文摘Two distinctive rearranged 19-nor-7,8-seco-labdane diterpenoids(1 and 2)with a novel tetracyclo[5.2.1.0^(2,5.)0^(4,10)]decane skeleton,a derivative of the open tetrahydrofuran ring(7),three dimeric compounds(8-10),and four revised homologs(3-6)were obtained from Chinese liverwort Pallavicinia ambigua.Their structures were identified via combined analysis of their spectroscopic data,single-crystal X-ray diffraction patterns,and ECD calculations.The light-driven conversion of compound 5 to compounds 1-4 demonstrated that photochemically induced postmodification involved in biosynthesis is an important way to diversify natural structures.A preliminary cytotoxicity assay revealed that compound 5 showed significant inhibition in the human prostate cancer(PC-3)cell line via an apoptotic pathway. | Chunyang Zhang Yuelan Li Zhaojun Chu Shuangzhi Yuan Yanan Qiao Jiaozhen Zhang Lin Li Yueqing Zhang Ruifeng Tian Yajie Tang Hongxiang Lou | 2024 | Chinese Chemical Letters2024，35，3： | 0 |
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