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Printing perovskite and graphene parallel structure-based optical-mechanical sensors for human-machine interaction

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Science China Technological Sciences 2025年

作者： Sisi CHEN Jiemin ZHANG Nan CHENG Wenbo LI Jing LIU Hongfei xie Jie ZHANG Yueying CHENG Xiaotong ZHAO Meng SU Yanlin SONG Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of Sciences (ICCAS) University of Chinese Academy of Sciences Weiyang College Tsinghua University Department of Cardiovascular Surgery First Medical Center PLA General Hospital AECC Beijing Institute of Aeronautical Materials Beijing Institute of Graphene Technology Beijing Engineering Research Centre of Graphene Application School of Integrated Circuit & Beijing National Research Center for Information Science and Technology (BNRist) Tsinghua University

Surgical robots are designed to provide enhanced precision and dexterity compared to manual surgical procedures,which mainly rely on multimodal sensing technologies for the surgeon to seamlessly operate the robotic arms and *** with single-mode sensors, optical and mechanical bi-modal sensors provide improved precision, enhanced safety,and robustness of human-machine interaction systems. Here, the template-guided and pneumatic printing technologies are combined to construct perovskite and graphene parallel structures with both optical and mechanical sensing capabilities. The printed uniformly crystallized perovskite microstructure exhibits fast and sensitive photoelectric response characteristics,enabling shadow recognition functionality. The combination of graphene and elastic rubber endows the great printability to prepare parallel structures near the perovskite arrays for force sensing capabilities. Thus, the printed perovskite and graphene structures possess non-contact optical sensing capabilities to detect hand position by recognizing shadows between the hand and the sensor, as well as contact mechanical sensing capabilities to detect touch force applied by the hand. It provides a synergistic platform for real-time and multidimensional feedback to improve human-machine interaction.

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新质生产力驱动下的箱包品牌及产品创新发展研究

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皮革科学与工程 2025年第1期35卷 114-119页

作者：王辉谢辉广州城市理工学院广东广州510800

在新质生产力的推动下,箱包行业的创新发展迎来了机遇。从新质生产力的定义与内涵出发,介绍了高效率、智能化、网络化以及可持续性等创新要素;从消费者需求变化、市场竞争态势和技术革新影响三个方面梳理了箱包品牌的市场现状;基于新质... 详细信息

在新质生产力的推动下,箱包行业的创新发展迎来了机遇。从新质生产力的定义与内涵出发,介绍了高效率、智能化、网络化以及可持续性等创新要素;从消费者需求变化、市场竞争态势和技术革新影响三个方面梳理了箱包品牌的市场现状;基于新质生产力的发展,提出了箱包品牌在材料、技术、用户体验和绿色可持续发展等关键领域的创新发展路径,为箱包行业未来的品牌创新发展提供了新的思路。

关键词：箱包新质生产力品牌产品市场可持续创新

Effect of mating status on the fecundity of a cricket, Teleogryllus emma

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Insect Science 2011年第3期18卷 320-324页

作者： lq-Quan Zhao Dao-Hong Zhu College of Forestry Central South University of Forestry & Technology Central South University of Forestry & Technology Changshe China Hunan First Normal University Central South University of Forestry & Technology Changshe China College of Life Science and Technology Central South University of Forestry & Technology Changshe China

Fecundity in some insects is affected by mating status. The effect of mating status on the fecundity and total egg production of Teleogryllus emma （Ohmachi et Matsumura）（Orthoptera： Gryllidae） was examined in this study. The results showed that the pre-oviposition period was shorter for amphigonic females than that for virgin females. However, no significant difference in pre-oviposition was found between amphigonic females and those that had mated with a male with either the phallodeum or testes extirpated. There is no difference in adult longevity between the above four groups. The fecundity and total egg production were much higher in amphigonic females than in those controlled under the three non-amphigonic treatments. The females of T. emma that mated with the testes-extirpated males produced more eggs （up to two-fold more） than both the virgin females and those that mated with the phallodeum-extirpated males, but there was no difference between them. The fecundity-enhancing substances transferred from male to female can stimulate the female to produce more eggs, but this stimulation has to occur in collaboration with sperm.

关键词： fecundity mating status pre-oviposition Teleogryllus emma total egg production

Grayanane Diterpenoids from Pieris formosa

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Chinese Chemical Letters 1998年第5期9卷 465-467页

作者： Wang, lq Ding, BY Zhao, WM Qin, GW Chinese Acad Sci Shanghai Inst Mat Med Shanghai 200031 Peoples R China Hangzhou Univ Coll Life Sci Hangzhou 310012 Peoples R China

Three grayanane diterpenoids 1-3 were isolated from Pieris formosa. 1 was identified as a new natural product and 2 and 3 as known grayanoside C and grayanotoxin XVIII on the basis of spectral analysis.

关键词： Pieris formosa grayanane diterpenoid pierisformosin A

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论产品责任中的产品自损

北京理工大学学报（社会科学版） 2025年第1期27卷 66-74页

作者：谢远扬刘岩中国政法大学民商经济法学院北京100088 北京市朝阳区人民法院北京100016

产品自损是否属于产品责任的赔偿范围,立法、司法和理论界各有不同的看法。基于产品瑕疵的产品自损和基于产品缺陷造成他人损害的损害赔偿责任,在责任性质、构成要件、责任形态等方面各有不同。在传统民法体系中,前者属于合同法中的瑕... 详细信息

产品自损是否属于产品责任的赔偿范围,立法、司法和理论界各有不同的看法。基于产品瑕疵的产品自损和基于产品缺陷造成他人损害的损害赔偿责任,在责任性质、构成要件、责任形态等方面各有不同。在传统民法体系中,前者属于合同法中的瑕疵担保责任,后者属于侵权法中的无过错产品责任,具有明确的区分。《侵权编解释》第19条特别规定将产品自损纳入产品责任的赔偿范围,突破了传统民法理论中合同责任和侵权责任的界分。为了避免体系内部的规范冲突,在实践中需要特别注意,在适用范围上,明确只有缺陷导致的产品自损才能通过侵权责任救济。在赔偿范围上,部分的履行利益能够纳入侵权责任的保护范围。在免责事由上,瑕疵检验期间并不能成为不承担侵权责任的理由。

关键词：产品自损产品责任瑕疵缺陷责任范围

基于DMD的阿达玛变换型近红外光谱仪快速处理系统设计与实现

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光谱学与光谱分析 2025年第1期45卷 133-138页

作者：王硕谢振坤魏志鹏长春理工大学高功率半导体激光国家重点实验室吉林长春130022 长春理工大学中山研究院广东中山528437

数字微镜器件(DMD)的近红外光谱仪,具有波长重复性好、分辨率高和抗振动性好等优点,广泛应用于食品安全和农业生产等领域的研究。随着DMD的微小型近红外光谱仪发展逐渐趋于成熟,仪器的成本和性能仍然是研发的关键。尽管大部分将重点放... 详细信息

数字微镜器件(DMD)的近红外光谱仪,具有波长重复性好、分辨率高和抗振动性好等优点,广泛应用于食品安全和农业生产等领域的研究。随着DMD的微小型近红外光谱仪发展逐渐趋于成熟,仪器的成本和性能仍然是研发的关键。尽管大部分将重点放在了软件开发和检测方法的研究,而仪器硬件的处理速度至关重要。只有确保光谱仪能够快速准确的采集并传输数据,才能有效实现光谱分析。在多数研究中,阿达玛矩阵的生成和解码工作通常由上位机完成,并通过FLASH存储的方式导入模板。这种方式可能会限制采集一幅完整光谱数据的时间效率。为了提高光谱采集速度和信噪比,提出一种高速驱动DMD和快速数据采集的方法,并基于DMD微小型近红外光谱仪设计一套硬件电路系统。采用现场可编辑门阵列(FPGA)和ARM的架构,创新性地实现了奇偶阿达玛模板的生成与解码过程在嵌入式系统底层执行,加快了光谱分析的速度并提高信噪比。通过与市面上DMD型光谱仪对比,研究结果显示,所研发的光谱仪完成单次光谱的采集时间仅需214 ms,相比商用DMD型光谱仪,采集效率提升了4倍。在同等3 s的采集时间内,所研发光谱仪的信噪比为4600,相比商用DMD型光谱仪,信噪比提升了1.5倍。通过所研发的光谱仪对油菜籽样品进行光谱扫描,分析了油菜籽的脂肪、蛋白质和水分的含量,并采用偏最小二乘回归(PLSR)建立了相应的模型。油菜籽脂肪含量的校正相关系数为0.9865、预测相关系数为0.9672;蛋白质含量的校正相关系数为0.9854、预测相关系数系数为0.9636;水分含量的校正相关系数为0.9875、预测相关系数为0.9614。模型评估的结果表明,该光谱仪能够满足油菜籽成分检测的需求,验证该光谱仪在商业领域具有重要的应用价值。

关键词：数字微镜器件近红外光谱仪阿达玛信噪比嵌入式油菜籽

一类伯努利微分方程的条件Hyers-Ulam稳定性分析

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应用数学 2025年第1期38卷 30-39页

作者：罗木春谢峰东华大学数学与统计学院上海201620

研究一类伯努利微分方程,在给定扰动阈值和初值条件下,建立了此类方程精确解和近似解间的比较定理,由此得到此类方程的条件Hyers-Ulam稳定的充分条件.并用例子证明其有效性.

关键词：条件Hyers-Ulam稳定 Hyers-Ulam常数比较定理伯努利微分方程

Tuning the porosity of {Co12IICo8III（μ3-OH）24（X）}11+ supramolecular frameworks by reaction time for D2/H2 separation

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Science China Chemistry 2025年

作者： Zhuozhou xie Zhu Zhuo Zi-Ang Nan Qing Li Xiufang Li Zi-Xiu Lu Linzhe Lü Jin Liu Luyao Liu Wenjing Wang Wei Wang Daqiang Yuan You-Gui Huang State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi InstitutesChinese Academy of Sciences State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical EngineeringXiamen University

Systematicly tuning the porosities of porous materials is crucial for targeted gas mixture separation,yet it remains a longstanding *** a common strategy,altering the phenylene ring count in the organic building units has been exploited to adjust pore apertures in metal organic frameworks （MOFs） and covalent organic frameworks （COFs）,resulting in only a stepwise pore size variation of approximately 2.8?.Unlike MOFs and COFs,the porosities for supramolecular assembly frameworks are highly dependent on the packings of the molecular building units in the *** above strategy cannot be applied to supramolecular assembly frameworks and other strategies are required to adjust pore apertures in supramolecular frameworks,especially to achieve porous materials with the optimal pore size for D2/H2separation （～3?）.Here,we successfully modulate the porosity of supramolecular frameworks of[CoII1+12CoIII8L12（μ3-OH）24（X）]1clusters （L=mono-deprotonated 1-iminoisoindole-3-amine,X=ClO?4or Cl?） by controlling the duration of self-assembly *** simply adjusting the reaction time,we obtain three[CoII12CoIII8L12（μ3-OH）24（X）]11+supramolecular frameworks:[CoII12CoIII8（μ3-OH）24（ClO4）L12)]·（Cl）4·（HCO2）7（1）,[CoII12CoIII8L12（μ3-OH）24（Cl）]·（ClOI4）4·（Cl）6·（HCO2）·（H2O）10（2）,and[CoI12CoIII8L12（μ3-OH）24（Cl）]·（Cl）11·（H2O）12（3）.The different stacking patterns of the[CoII12CoIII8L12（μ3-OH）24（X）]11+clusters in these frameworks lead to significantly varied stabilities and *** 1 exhibits permanent porosity with interconnected channels and maintains stability under harsh *** contrast,compound 2 is nearly nonporous,and compound 3 becomes unstable upon *** pores of compound 1 show higher affinity to D2than H2,and the pore aperture diameter of compound 1 （～3.06?） meets the optimal porosity for D2/***,compound 1 demonstrates moderate D2/H2separation at 77 K (retention time:～7 min/g for D2/H2/Ne （10/10/80 vol%） in a flow of 5 mL

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基于点云处理的仿人机器人楼梯障碍物识别与剔除方法

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工程科学学报 2025年第2期47卷 339-350页

作者：于乃功谢秋生李洪政北京工业大学信息科学技术学院北京100124 北京市计算智能与智能系统重点实验室北京100124 教育部数字社区工程研究中心北京100124

环境感知对于仿人机器人自主导航和运动规划具有重要研究意义,是实现仿人机器人在复杂环境中进行自主移动进而完成特定任务的基础.在特殊的楼梯场景中仿人机器人环境感知过程面临诸多挑战,楼梯障碍物会破坏阶梯平面特征,导致仿人机器人... 详细信息

环境感知对于仿人机器人自主导航和运动规划具有重要研究意义,是实现仿人机器人在复杂环境中进行自主移动进而完成特定任务的基础.在特殊的楼梯场景中仿人机器人环境感知过程面临诸多挑战,楼梯障碍物会破坏阶梯平面特征,导致仿人机器人获取不准确的楼梯参数而出现踏空、摔跤等问题.本文结合区域生长和平面构造方法识别和剔除楼梯障碍物点云,基于剔除障碍物后的楼梯进行三维参数估计.首先利用相邻点的投影之和最小原理准确完成对楼梯水平面的提取;其次根据区域生长算法判定楼梯障碍物聚类情况,构造平面并分析平面内点数以完成对障碍物点云的快速识别与剔除工作;最后对有障碍物楼梯与剔除障碍物楼梯进行楼梯三维感知实验.实验结果表明,本文剔除楼梯障碍物的平均精度为92.43%,且剔除后的楼梯参数感知误差仅为有障碍物时的0.5倍.总体表明所提算法能提高机器人在复杂楼梯环境中的楼梯参数估计精度,能够有效提高仿人机器人在复杂楼梯环境下的感知能力.

关键词：仿人机器人复杂环境感知楼梯区域生长参数估计