CIOMP OpenIR中国科学院长春光学精密机械与物理研究所http://ir.ciomp.ac.cn:802024-03-19T09:30:35Z2024-03-19T09:30:35ZResearch on Design Simulation and Experiment of Separation Mechanism for Micro-Nano SatellitesX. Y. ZhaoC. J. ZhaoJ. L. LiY. L. GuanS. B. Chen and L. Zhanghttp://ir.ciomp.ac.cn:80/handle/181722/673132023-07-21T06:57:42Z2023-07-21T06:57:42Z题名: Research on Design Simulation and Experiment of Separation Mechanism for Micro-Nano Satellites
作者: X. Y. Zhao; C. J. Zhao; J. L. Li; Y. L. Guan; S. B. Chen and L. Zhang
摘要: The separation mechanism is a critical device that transports and releases satellites during launch and on-orbit. However, as satellites become smaller and more compact, the traditional belt-locking device or pyrotechnic release and separation device cannot meet the micro-nano satellite's separation requirements. A novel separation mechanism kinematic system was designed, analyzed, and experimentally verified to achieve non-interference and non-pyrotechnic separation of the satellites from the launch vehicle while maintaining the initial separation attitude. First, an overall structural strategy for the kinematics system was proposed based on the MF (product code of the satellite) satellite's structural properties. The structural characteristics of the separation mechanism were also confirmed by the principle of energy conservation. Then, a finite element model and a dynamic model of the kinematic coupling system between the MF satellite and the separation mechanism during launch and deployment were constructed, along with an analysis of the mechanical characteristics and a kinematic simulation. Finally, the mechanical characteristics and dependability of the separation mechanism were verified using a ground vibration test and a separation test. The prototype test results demonstrate that the separation process is essentially identical to the numerical simulation results and that the MF satellite can be deployed successfully without interference, with the MF satellite's initial separation attitude fully satisfying the designed technical indexes.2023-07-21T06:57:42ZSingle polarization narrow linewidth hybrid laser based on selective polarization mode feedbackX. C. LuoC. ChenY. Q. NingJ. W. ZhangJ. Q. ChenX. ZhangL. LiH. WuY. L. ZhouL. Qin and L. J. Wanghttp://ir.ciomp.ac.cn:80/handle/181722/673122023-07-21T06:52:01Z2023-07-21T06:52:01Z题名: Single polarization narrow linewidth hybrid laser based on selective polarization mode feedback
作者: X. C. Luo; C. Chen; Y. Q. Ning; J. W. Zhang; J. Q. Chen; X. Zhang; L. Li; H. Wu; Y. L. Zhou; L. Qin and L. J. Wang
摘要: We demonstrate a single polarization, narrow linewidth hybrid laser by using a semiconductor gain chip and a birefringence silica-on-silicon waveguide Bragg grating. The hybrid laser shows good linewidth and single polarization characteristics with the selective polarization mode feedback of high birefringence grating. The temperature phase modulation on the characteristics of the potentially lasing modes is displayed. In addition, the performances of different mode power, side mode suppress ratio, spectrum and linewidth during temperature tuning are characterized. We based on the rate equation method and the chirp factor reduction theory analysis the variation of laser linewidth with power and lasing wavelength. The best linewidth achieves 4.36 kHz and the best polarization extinction ratio is 38.6 dB. The output power in fiber is 6.58 mW.2023-07-21T06:52:01ZPublisher s Note:“Generation of integer and fractional perfect vortex beams using all-dielectric geometrical phase metasurfaces” Appl. Phys. Lett. 120 201701 (2022)K. X. ChengZ. X. LiuZ. D. HuG. Y. CaoJ. J. Wu and J. C. Wanghttp://ir.ciomp.ac.cn:80/handle/181722/673112023-07-21T06:42:34Z2023-07-21T06:42:34Z题名: Publisher s Note:“Generation of integer and fractional perfect vortex beams using all-dielectric geometrical phase metasurfaces” Appl. Phys. Lett. 120 201701 (2022)
作者: K. X. Cheng; Z. X. Liu; Z. D. Hu; G. Y. Cao; J. J. Wu and J. C. Wang2023-07-21T06:42:34ZPhotoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2(BO3)4 phosphorsX. FanX. SunC. LiuW. TianM. LiY. Luo and C. Wuhttp://ir.ciomp.ac.cn:80/handle/181722/673082023-07-21T06:32:28Z2023-07-21T06:32:28Z题名: Photoluminescence properties excellent thermal stability and energy transfer in Ce3+ and Tb3+ co-doped Sr3Gd2(BO3)4 phosphors
作者: X. Fan; X. Sun; C. Liu; W. Tian; M. Li; Y. Luo and C. Wu
摘要: Sr3Gd2(BO3)4: Ce3+, Sr3Gd2(BO3)4: Tb3+ and Sr3Gd2(BO3)4: Ce3+, Tb3+ phosphors were synthesized through conventional high temperature solid state reaction method. Phase purity, crystal structure, photoluminescence properties, and lifetime of the samples were analyzed in detailed. Sr3Gd2(BO3)4: Ce3+ showed a bright blue broad emission band, which was attributed to 4f 5d transitions of the Ce3+ ions, and it exhibited two broad excitation ranged from 200 nm to 400 nm. For all Sr3Gd2(BO3)4: Tb3+ samples, under ultraviolet excitation bands of 240 nm, four emissions peaked at 490 nm, 544 nm, 585 nm and 623 nm appeared, due to the 5D4 7FJ (J = 6, 5, 4, 3) transitions of Tb3+ ions. For the Sr3Gd2(BO3)4: Ce3+, Tb3+ phosphors, the lifetime of the samples were analyzed, which showed the presence of energy transfer between the Ce3+ and Tb3+. The energy transfer efficiency from Ce3+ ions to Tb3+ ions reached 98.37%. When the temperature reached 443 K, the luminescence intensity reached 88% of the initial value. Finally, a white LED was fabricated by using a 365 nm near ultraviolet LED chip combined with BaMgAl10O17: Eu2+ (blue), Sr3Gd0.91(BO3)4: 0.09Ce3+, 1.0 Tb3+ (green), and CaAlSiN3: Eu2+ (red) phosphors. The color coordinates was (0.40, 0.42); correlated color temperature was 3721 K; color rendering index was 91.1. The results showed that the Sr3Gd2(BO3)4: Ce3+, Tb3+ green phosphors were suitable for white LEDs. 2021 Elsevier B.V.2023-07-21T06:32:28ZEvaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometerY. ZhengH. Z. CheY. P. WangX. G. XiaX. Q. HuX. C. ZhangJ. ZhuJ. B. ZhuH. J. ZhaoL. LiK. Gui and X. Y. Zhanghttp://ir.ciomp.ac.cn:80/handle/181722/673022023-07-21T06:06:43Z2023-07-21T06:06:43Z题名: Evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer
作者: Y. Zheng; H. Z. Che; Y. P. Wang; X. G. Xia; X. Q. Hu; X. C. Zhang; J. Zhu; J. B. Zhu; H. J. Zhao; L. Li; K. Gui and X. Y. Zhang
摘要: An evaluation of aerosol microphysical, optical and radiative properties measured with a multiwavelength photometer named CW193 was performed in this study. The instrument has a highly integrated design, smart control performance and is composed of three parts (the optical head, robotic drive platform and stents system). Based on synchronous measurements, the CW193 products were validated using reference data from the AERONET CE318 photometer. The results show that the raw digital counts from CW193 agree well with the counts from AERONET (R > 0.989), with daily average triplets of around 1.2 % to 3.0 % for the ultraviolet band and less than 2.0 % for the visible and infrared bands. Good aerosol optical depth agreement (R > 0.997, 100 % within expected error) and root mean square error (RMSE) values ranging from 0.006 (for the 870 nm band) to 0.016 (for the 440 nm band) were obtained, with the relative mean bias (RMB) ranging from 0.922 to 1.112 and the aerosol optical depth bias within +/- 0.04. The maximum deviation of the peak value for fine-mode particles varied from about 8.9 % to 77.6 %, whereas the variation for coarse-mode particles was about 13.1 % to 29.1 %. The deviation vari ations of the single scattering albedo were approximately 0.1 %-1.8 %, 0.6 %-1.9 %, 0.1 %-2.6 % and 0.8 %-3.5 % for the 440, 675, 870 and 1020 nm bands, respectively. For the aerosol direct radiative forcing, deviations of approximately 4.8 %-12.3 % were obtained at the earth's surface and 5.4 %-15.9 % for the top of the atmosphere. In addition, the water vapor retrievals showed satisfactory accuracy, characterized by a high R value (similar to 0.997), a small RMSE (similar to 0.020) and a good expected error distribution (100 % within expected error). The water vapor RMB was about 0.979, and the biases mostly varied within +/- 0.04, whereas the mean values were concentrated within +/- 0.02.2023-07-21T06:06:43ZGenome-Wide Identification, Evolution and Expression Analysis of the Glutathione S-Transferase Supergene Family in EuphorbiaceaeQ. DuanG. R. LiY. P. QuD. X. YinC. L. Zhang and Y. S. Chenhttp://ir.ciomp.ac.cn:80/handle/181722/673012023-07-17T08:34:45Z2023-07-17T08:34:45Z题名: Genome-Wide Identification, Evolution and Expression Analysis of the Glutathione S-Transferase Supergene Family in Euphorbiaceae
作者: Q. Duan; G. R. Li; Y. P. Qu; D. X. Yin; C. L. Zhang and Y. S. Chen
摘要: Euphorbiaceae, a family of plants mainly grown in the tropics and subtropics, is also widely distributed all over the world and is well known for being rich in rubber, oil, medicinal materials, starch, wood and other economically important plant products. Glutathione S-transferases (GSTs) constitute a family of proteins encoded by a large supergene family and are widely expressed in animals, bacteria, fungi and plants, but with few reports of them in Euphorbiaceae plants. These proteins participate in and regulate the detoxification and oxidative stress response of heterogeneous organisms, resistance to stress, growth and development, signal transduction and other related processes. In this study, we identified and analyzed the whole genomes of four species of Euphorbiaceae, namely Ricinus communis, Jatropha curcas, Hevea brasiliensis, and Manihot esculenta, which have high economic and practical value. A total of 244 GST genes were identified. Based on their sequence characteristics and conserved domain types, the GST supergene family in Euphorbiaceae was classified into 10 subfamilies. The GST supergene families of Euphorbiaceae and Arabidopsis have been found to be highly conserved in evolution, and tandem repeats and translocations in these genes have made the greatest contributions to gene amplification here and have experienced strong purification selection. An evolutionary analysis showed that Euphorbiaceae GST genes have also evolved into new subtribes (GSTO, EF1BG, MAPEG), which may play a specific role in Euphorbiaceae. An analysis of expression patterns of the GST supergene family in Euphorbiaceae revealed the functions of these GSTs in different tissues, including resistance to stress and participation in herbicide detoxification. In addition, an interaction analysis was performed to determine the GST gene regulatory mechanism. The results of this study have laid a foundation for further analysis of the functions of the GST supergene family in Euphorbiaceae, especially in stress and herbicide detoxification. The results have also provided new ideas for the study of the regulatory mechanism of the GST supergene family, and have provided a reference for follow-up genetics and breeding work.2023-07-17T08:34:45ZOne-dimensional sp carbon: Synthesis, properties, and modificationsC. F. LvX. G. Yang and C. X. Shanhttp://ir.ciomp.ac.cn:80/handle/181722/673002023-07-17T08:29:05Z2023-07-17T08:29:05Z题名: One-dimensional sp carbon: Synthesis, properties, and modifications
作者: C. F. Lv; X. G. Yang and C. X. Shan
摘要: Carbyne, as the truly one-dimensional carbon allotrope with sp-hybridization, has attracted significant interest in recent years, showing potential applications in next-generation molecular devices due to its ultimate one-atom thinness. Various excellent properties of carbyne have been predicted, however, free-standing carbyne sample is extremely unstable and the corresponding experimental researches and modifications are under-developed compared to other known carbon allotropes. The synthesis of carbyne has been slowly developed for the past decades. Recently, there have been several breakthroughs in in-situ synthesis and measurement of carbyne related materials, as well as the preparation of ultra-long carbon chains toward infinite carbyne. These progresses have aroused widespread discussion in the academic community. In this review, the latest approaches in the synthesis of sp carbon are summarized. We then discuss its extraordinary properties, including mechanical, electronic, magnetic, and optical properties, especially focusing on the regulations of these properties. Finally, we provide a perspective on the development of carbyne.2023-07-17T08:29:05ZLuminescent enhancement of cyan BaSi2O2N2:Eu2+ phosphor by addition of Ho3+S. HeL. L. ZhangX. Q. LiuD. S. SunH. WuH. J. WuG. H. PanZ. D. Hao and J. H. Zhanghttp://ir.ciomp.ac.cn:80/handle/181722/672992023-07-17T08:26:21Z2023-07-17T08:26:21Z题名: Luminescent enhancement of cyan BaSi2O2N2:Eu2+ phosphor by addition of Ho3+
作者: S. He; L. L. Zhang; X. Q. Liu; D. S. Sun; H. Wu; H. J. Wu; G. H. Pan; Z. D. Hao and J. H. Zhang
摘要: Efficient cyan phosphors are needed for filling the cyan cavity in the spectra of phosphor converted white light-emitting diodes (pc-WLEDs). In this paper, we reported a strategy to enhance the emission of cyan BaSi2O2N2:Eu2+ phosphor by adding Ho3+ to promote conversion from Eu3+ to Eu2+. External quantum efficiency reached up to 68.9%, excited by 405 nm, based on the observation of emission intensity decrease of Eu3+ and absorption enhancement of Eu2+ with addition of Ho3+. Using the luminescence-enhanced cyan phosphor, commercial yellow, and red phosphors, full-color WLEDs with high color rendering at various color temperatures were packaged on blue LED chips. A WLED with ultra-high color rendering index (CRI = 98) and high luminous efficiency (95 lm/W) at correlated color temperature of 5112 K was achieved.2023-07-17T08:26:21ZGrowth, first-principles simulations and near-infrared optical properties of rare earth (Nd3+, Er3+)-doped CeF3 crystals for laser applicationsW. L. YangX. L. JiangZ. LengH. S. LiuC. LiZ. M. ShiK. K. HuangF. M. ZengC. LiH. Lin and Z. M. Suhttp://ir.ciomp.ac.cn:80/handle/181722/672982023-07-17T08:23:02Z2023-07-17T08:23:02Z题名: Growth, first-principles simulations and near-infrared optical properties of rare earth (Nd3+, Er3+)-doped CeF3 crystals for laser applications
作者: W. L. Yang; X. L. Jiang; Z. Leng; H. S. Liu; C. Li; Z. M. Shi; K. K. Huang; F. M. Zeng; C. Li; H. Lin and Z. M. Su
摘要: Nd3+:CeF3 and Er3+:CeF3 crystals with different doping concentrations were successfully grown by the Bridgman method. The physicochemical parameters, such as crystal structure and phonon vibration energy were obtained by XRD and Raman tests. The results show that rare earth (Nd3+ or Er3+) does not change the hexagonal phase structure of the crystal, and the doping of rare earth ions does not change the maximum phonon frequency. The measured results are 388 and 392 cm(- 1), respectively, which are similar to CeF3 single crystal and half of common oxide crystal. According to the first principle, the difference charge density of the two crystals can be intuitively obtained. The calculated band gap values of the two crystals are 2.91 and 4.37 eV, respectively, which are similar to the results of absorption spectrum measurement. The NIR luminescence performance of Nd3+:CeF3 crystal was tested by 808 nm pump. When the doping concentration reached 2 at%, the emission intensity was the strongest at 1064 nm (F-4(3/2)-> I-4(11/2)). The luminescence properties of Er3+:CeF3 crystal at 1550 nm (I-4(13/2)-> I-4(15/2)) were tested by 980 nm pump. The emission intensity keeps the highest when the doping concentration reaches 3 at%. The concentration quenching and the dipole-dipole interaction in crystals are studied using energy transfer theory, and the J-O strength parameters of crystals are calculated. The results show that Nd3+:CeF3 and Er3+:CeF3 crystals have excellent properties and excellent near-infrared luminescence performance, which has great potential in laser applications.2023-07-17T08:23:02ZFormation evolution and characterization of nanoporous structures on the Ti6Al4V surface induced by nanosecond pulse laser irradiationC. WangH. HuangZ. Y. ZhangL. ZhangJ. W. Yan and L. Q. Renhttp://ir.ciomp.ac.cn:80/handle/181722/672972023-07-17T08:18:16Z2023-07-17T08:18:16Z题名: Formation evolution and characterization of nanoporous structures on the Ti6Al4V surface induced by nanosecond pulse laser irradiation
作者: C. Wang; H. Huang; Z. Y. Zhang; L. Zhang; J. W. Yan and L. Q. Ren
摘要: Manipulating materials at nanoscale is challenging but rewarding. Nanostructures exhibit some unique properties distinguished from macroscopic bulk materials, so fabrication of nanostructures on the mate-rial surface is beneficial to broaden their functional applications. In this study, by nanosecond pulse laser irradiation in nitrogen atmosphere, it was found that unique nanoporous structures could be formed on the Ti6Al4V surface. The effects of laser parameters including the laser power, overlap rate, scanning speed, and repetition frequency on the formation and evolution of the nanoporous structures were sys-tematically investigated. By changing the laser parameters, the nanoporous structures with various porosities could be easily achieved on the Ti6Al4V surface. According to the structural evolution and chemical composition, the formation mechanism of the nanoporous structures was discussed. Furthermore, by characterizing the micro-mechanical properties and wettability, it was found that the surface with nanoporous structures exhibited similar surface hardness but improved tribological perfor-mances compared to the original Ti6Al4V surface, and the surface wettability could be tuned. This study provides a simple method for fabricating nanoporous structures on the Ti6Al4V surface, which would broaden its functional applications.(c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).2023-07-17T08:18:16Z