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| 1 | Structure optimization of connection frames based on frequency sensitivity in macro-micro motion platforms显示文摘High-performance connection frames are of great significance for ultra-high acceleration and ultra-precision positioning in macro-micro motion platforms. This paper first takes the connection frame as a research object,builds a finite element model(FEM) of the natural frequency of the frame, and then verifies the correctness of this model. The frequency sensitivity method is then used to perturb the structural parameters of the FEM of the connection frame, and the sensitivities of the first-order natural frequency and mass of the corresponding structural parameters are obtained by calculation and analysis. The design variables are also determined. The natural frequency is used as the optimization objective, and the design parameters and mass of the connection frame are constrained. The structural parameters of the connecting frame are obtained through optimization, and the model is built and verified by experiments. The results show that the first-order natural frequency of the connecting frame is effectively improved by the frequency sensitivity method, avoids resonance between the connecting frame and the voice coil motor, and realizes the lightweight design of the connection frame. This research provides a reliable basis for the stable operation and ultra-precision positioning of ultra-high acceleration macro-motion platforms. | Lufan Zhang Xueli Li Haihong Zhang Haixin Li Hu Li Jun Wu | 2019 | Nanotechnology and Precision Engineering2019，2，1： | 1 |
| 2 | The distributed Brillouin sen- sor system based on offset locking two DFB lasers 显示文摘 | LI Ytm BAO Xiaoyi ZOU Lufan | 2008 | Applied Optics2008，47，2： | 1 |
| 3 | LSM14B coordinates protein component expression in the P-body and controls oocyte maturation显示文摘The generation of mature and healthy oocytes is the most critical event in the entire female reproductive process,and the mechanisms regulating this process remain to be studied.Here,we demonstrate that Smith-like(LSM)family member 14B(LSM14B)regulates oocyte maturation,and the loss of LSM14B in mouse ovaries leads to abnormal oocyte MII arrest and female infertility.Next,we find the aberrant transcriptional activation,indicated by abnormal non-surrounded nucleolus and surrounded nucleolus oocyte proportions,and abnormal chromosome assembly and segregation in Lsm14b-deficient mouse oocytes.The global transcriptome analysis suggests that many transcripts involved in cytoplasmic processing body(P-body)function are altered in Lsm14b-deficient mouse oocytes.Deletion of Lsm14b results in the expression and/or localization changes of P-body components(such as LSM14A,DCP1A,and 4E-T).Notably,DDX6,a key component of the P-body,is downregulated and accumulates in the nuclei in Lsm14b-deficient mouse oocytes.Taken together,our data suggest that LSM14B links mouse oocyte maturation to female fertility through the regulation of the P-body. | Huiru Zhang Tao Zhang Xiang Wan Chang Chen Shu Wang Dongdong Qin Lufan Li Luping Yu Xin Wu | 2024 | Journal of Genetics and Genomics2024，51，1： | 0 |
| 4 | Self-powered lead-free quantum dot plasmonic phototransistor with multi-wavelength response显示文摘Because they possess excellent visible light absorption properties, lead-free colloidal copper-based chalcogenide quantum dots(QDs) have emerged in photoelectronic fields. By means of localized surface plasmonic resonance(LSPR), the absorption properties of QDs can be enhanced. In this paper, we fabricate a lead-free CuInSe2 QD field effect phototransistor(FEpT) by utilizing the LSPR enhancement of Au nanoparticles(NPs). The plasmonic FEpT demonstrates responsivity up to 2.7 μA· W^(-1) and a specific detectivity of 7 × 10~3 Jones at zero bias under illumination by a 532 nm laser, values that are enhanced by approximately 200% more than devices without Au NPs. Particularly, the FEpT exhibits a multi-wavelength response, which is photoresponsive to 405, 532,and 808 nm irradiations, and presents stability and reproducibility in the progress of ON–OFF cycles.Furthermore, the enhancement induced by Au NP LSPR can be interpreted by finite-difference time domain simulations. The low-cost solution-based process and excellent device performance strongly underscore leadfree CuInSe2 QDs as a promising material for self-powered photoelectronic applications, which can be further enhanced by Au NP LSPR. | YU YU YATING ZHANG LUFAN JIN ZHILIANG CHEN YIFAN LI QINGYAN LI MINGXUAN CAO YONGLI CHE HAITAO DAI JUNBO YANG JIANQUAN YAO | 2019 | Photonics Research2019，7，2： | 0 |
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