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促进、抵触与十字路口:关于男性节育与男性气质的国际比较研究

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国际社会科学杂志（中文版） 2024年第1期41卷 135-141,9,16页

作者：王向贤张大川(译) 山东大学哲学与社会发展学院不详

问题的提出面对低生育率,许多政府的主导思想是努力提高至适当水平,而非“生生不息”。因此,在已生育理想子女数量后采用安全有效的长期避孕方式,是民众和政府的共同需求。自20世纪70年代起,就技术而言,男性结扎已发展成为最可靠的永久... 详细信息

问题的提出面对低生育率,许多政府的主导思想是努力提高至适当水平,而非“生生不息”。因此,在已生育理想子女数量后采用安全有效的长期避孕方式,是民众和政府的共同需求。自20世纪70年代起,就技术而言,男性结扎已发展成为最可靠的永久避孕方式,意外怀孕率只有1.5%o(World Health Organization 2011)。与女性结扎相比,男性结扎在实施难易度、避孕效果、术后并发症、避孕失败率等方面也明显占优势。然而,在目前全世界已婚或同居伴侣所用的全部现代避孕方式中,男性结扎只占5%(United Nations2012)。

关键词：避孕方式避孕效果意外怀孕男性气质避孕失败共同需求男性节育术后并发症

Theoretical investigation of hierarchical sub-wavelength photonic structures fabricated using high-order waveguide-mode interference lithograph

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Chinese Physics B 2017年第2期26卷 213-217页

作者： Ru wang xiangxian wang Hua Yang Yunping Qi School of Science Lanzhou University of Technology Lanzhou 730050 China College of Physics and Electronic Engineering Northwest Normal University Lanzhou 730070 China

This paper presents the theoretical investigation of hierarchical sub-wavelength photonic structures with various periods and numbers of layers, which were fabricated using a high-order waveguide-mode interference field. A 442-nm laser was used to excite high-order waveguide modes in an asymmetric metal-cladding dielectric waveguide structure. The dispersion curve of the waveguide modes was theoretically analyzed, and the distribution of the interference field of high-order waveguide modes was numerically simulated using the finite-element method. The various dependences of the characteristics of hierarchical sub-wavelength photonic structures on the thickness and refractive index of the photoresist and the waveguide mode were investigated in detail. These hierarchical sub-wavelength photonic structures have various periods and numbers of layers and can be fabricated by a simple and low-cost method.

关键词： sub-wavelength photonic structure finite-element method waveguide modes lithography

Plasmonic sensor with self-reference capability based on functional layer film composed of Au/Si gratings

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Chinese Physics B 2022年第1期31卷 293-298页

作者： Jiankai Zhu xiangxian wang Yunping Qi Jianli Yu School of Science Lanzhou University of TechnologyLanzhou 730050China College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China School of Electronic Engineering Chaohu UniversityChaohu 238000China

We propose a simple one-dimensional grating coupling system that can excite multiple surface plasmon resonances for refractive index(RI)sensing with self-reference characteristics in the near-infrared *** theoretical analysis and the finite-difference time-domain method,the plasmonic mechanism of the structure is discussed in *** results show that the excited resonances are independent of each other and have different fields of *** mode involving extensive interaction with the analyte environment achieves a high sensitivity of 1236 nm/RIU,and the figure of merit(FOM)can reach 145 ***,the mode that is insensitive to the analyte environment exhibits good self-reference ***,we discuss the case of exchanging the substrate material with the analyte *** simulation results show that this RI sensor can be widely deployed in unstable and complicated environments.

关键词： self-reference plasmonic sensor functional layer sensitivity

The Difficult Transition to the“New”Caring Fatherhood:An Examination of Paternity Leave

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Social Sciences in China 2020年第1期41卷 182-202页

作者： wang xiangxian Li Changjiang School of Politics and Public Administration Tianjin Normal University School of International Police Studies People’s Public Security University of China

Paternity leave,a social policy first implemented in China some twenty years ago,has a direct bearing on *** marks a preliminary attempt to promote the transition from fathers’lack of involvement to engagement founded on cultural recognition and economic and political *** intergenerational continuity of the absent father,the reproduction of this absence through the extended family,the limited fatherhood created by employers through a consensus about human feelings,and the way local governments are taking the lead in paternity leave,ahead of the central government,jointly build the mainstream model of the absent *** should indeed provide day-to-day care for their children,but only as helpers;this means that short-term paternity leave is an appropriate way for new fathers to take on their *** notion,however,not only fails to meet the new needs,responsibilities and rights of some fathers who wish to actively care for and bond with their children,but also further consolidates the gender division of labor(in which men are innately breadwinners and women homemakers),a division that is inextricably linked with people’s interests,ethics and emotions in contemporary *** low fertility in today’s world calls for a significant change in the gender division of *** embracing a caring role is not only a work right and an emotional right for fathers,but also heralds emerging civil rights and marks a new development in social *** this sense,the transition to care-giving fathers should not be that difficult.

关键词： paternity leave fatherhood childbirth gender division of labor

Refractive index sensing of double Fano resonance excited by nano-cube array coupled with multilayer all-dielectric film

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Chinese Physics B 2022年第2期31卷 372-379页

作者： xiangxian wang Jian Zhang Jiankai Zhu Zao Yi Jianli Yu School of Science Lanzhou University of TechnologyLanzhou 730050China Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and TechnologyMianyang 621010China School of Electronic Engineering Chaohu UniversityChaohu 238000China

We propose a hybrid structure of a nano-cube array coupled with multilayer full-dielectric thin films for refractive index *** this structure,discrete states generated by two-dimensional grating and continuous states generated by a photonic crystal were coupled at a specific wavelength to form two Fano *** transmission spectra and electric field distributions of the structure were obtained via the finite-difference time-domain *** obtained the optimal structural parameters after optimizing the geometrical *** the optimal parameters,the figure of merit(FOM)values of the two Fano resonances reached 1.7×10^(4)and 3.9×10^(3),*** results indicate that the proposed structure can achieve high FOM refractive index sensing,thus offering extensive application prospects in the biological and chemical fields.

关键词： Fano resonance refractive index nano-cube array all-dielectric film

Efficient manipulation of terahertz waves by multi-bit coding metasurfaces and further applications of such metasurfaces

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Chinese Physics B 2021年第2期30卷 336-343页

作者： Yunping Qi Baohe Zhang Jinghui Ding Ting Zhang xiangxian wang Zao Yi College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China School of Science Lanzhou University of TechnologyLanzhou 730050China Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and TechnologyMianyang 621900China

Benefiting from the unprecedented superiority of coding metasurfaces at manipulating electromagnetic waves in the microwave band,in this paper,we use the Pancharatnam-Berry(PB)phase concept to propose a high-efficiency reflectivetype coding metasurface that can arbitrarily manipulate the scattering pattern of terahertz waves and implement many novel *** optimizing the coding sequences,we demonstrate that the designed 1-,2-,and 3-bit coding metasurfaces with specific coding sequences have the strong ability to control reflected terahertz *** two proposed1-bit coding metasurfaces demonstrate that the reflected terahertz beam can be redirected and arbitrarily *** normally incident x-and y-polarized waves,a 10 d B radar cross-section(RCS)reduction can be achieved from 2.1 THz to5.2 THz using the designed 2-bit coding ***,two kinds of orbital angular momentum(OAM)vortex beams with different moduli are generated by a coding metasurface using different coding *** research provides a new degree of freedom for the sophisticated manipulation of terahertz waves,and contributes to the development of metasurfaces towards practical applications.

关键词： coding metasurface Pancharatnam-Berry phase multiple beams radar cross-section(RCS)reduction orbital angular momentum

Plasmonic Refractive Index Sensors Based on One-and Two-Dimensional Gold Grating on a Gold Film

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Photonic Sensors 2020年第4期10卷 375-386页

作者： Jiankai ZHU xiangxian wang Yuan WU Yingwen SU Tianxu JIA Hua YANG Liping ZHANG Yunping QI Xiaolei WEN School of Science Lanzhou University of TechnologyLanzhou 730050China College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China Center for Micro-and Nanoscale Research and Fabrication University of Science and Technology of ChinaHefei 230026China

In this paper,we propose two kinds of composite structures based on the one-and two-dimensional(1D&2D)gold grating on a gold film for plasmonic refractive index *** resonance modes and sensing characteristics of the composite structures are numerically simulated by the finite-difference time-domain *** composite structure of the 1D gold semi-cylinder grating and gold film is analyzed first,and the optimized parameters of the grating period are *** sensitivity and figure of merit(FOM)can reach 660 RIU/nm and 169 RIU-1,***,we replace the 1D grating with the 2D gold semi-sphere particles array and find that the 2D grating composite structure can excite strong surface plasmon resonance intensity in a wider period *** sensitivity and FOM of the improved composite structure can reach 985 RIU/nm and 298 RIU-1,*** last,the comparison results of the sensing performance of the two structures are *** proposed structures can be used for bio-chemical refractive index sensing.

关键词： Surface plasmon refractive index sensor grating

Independently tunable dual resonant dip refractive index sensor based on metal–insulator–metal waveguide with Q-shaped resonant cavity

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Chinese Physics B 2022年第3期31卷 316-322页

作者： Haowen Chen Yunping Qi Jinghui Ding Yujiao Yuan Zhenting Tian xiangxian wang College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China School of Science Lanzhou University of TechnologyLanzhou 730050China Engineering Research Center of Gansu Province for Intelligent Information Technology and Application Northwest Normal UniversityLanzhou 730070China

A plasmonic resonator system consisting of a metal–insulator–metal waveguide and a Q-shaped resonant cavity is proposed in this paper. The transmission properties of surface plasmon polaritons in this structure are investigated by using the finite difference in time domain(FDTD) method, and the simulation results contain two resonant dips. The physical mechanism is studied by the multimode interference coupled mode theory(MICMT), and the theoretical results are in highly consistent with the simulation results. Furthermore, the parameters of the Q-shaped cavity can be controlled to adjust the two dips, respectively. The refractive index sensor proposed in this paper, with a sensitivity of 1578 nm/RIU and figure of merit(FOM) of 175, performs better than most of the similar structures. Therefore, the results of the study are instructive for the design and application of high sensitivity nanoscale refractive index sensors.

关键词： surface plasmon polaritons refractive index sensors metal–insulator–metal(MIM)waveguide multi-mode interference coupling theory

A novel plasmonic refractive index sensor based on gold/silicon complementary grating structure

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Chinese Physics B 2021年第2期30卷 313-318页

作者： xiangxian wang Jiankai Zhu Yueqi Xu Yunping Qi Liping Zhang Hua Yang Zao Yi School of Science Lanzhou University of TechnologyLanzhou 730050China College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and TechnologyMianyang 621010China

A novel complementary grating structure is proposed for plasmonic refractive index sensing due to its strong resonance at near-infrared *** reflection spectra and the electric field distributions are obtained via the finite-difference time-domain *** simulation results show that multiple surface plasmon resonance modes can be excited in this novel ***,one of the resonance modes shows appreciable potential in refractive index sensing due to its wide range of action with the environment of the *** optimizing the grating geometric variables of the structure,the designed structure shows the stable sensing performance with a high refractive index sensitivity of 1642 nm per refractive index unit(nm/RIU)and the figure of merit of 409 RIU^(-1).The promising simulation results indicate that such a sensor has a broad application prospect in biochemistry.

关键词： plasmonic sensor gold silicon grating