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Tendril-Based Climbing Plants to Model, Simulate and Create Bio-Inspired Robotic Systems

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Journal of Bionic Engineering 2015年第2期12卷 250-262页

作者： Renato Vidoni tanja Mimmo Camilla Pandolfi Faculty of Science and Technology Free University of Bolzano Piazza universith 3 91 O0 Bolzano Italy European Space Agency-Advanced Concepts Team Estec Noordwjik Netherlands

Bioinspiration can be considered one of the keys for future smart and versatile robotic systems. Plants could be an im- portant source of ideas despite the fact that they have not yet been deeply observed and considered. In this paper, climbing tendril-bearer plants that, by means of irritable filiform organs called tendrils, search for a support, grasp it and climb to gain height, have been used to study and develop an effective climbing robot. The study aimed first to evaluate the main movements and behaviors of the tendril from a biomimetic point of view. The tendril complexity was then simplified, a robotic model was developed and a kinematic simulator was designed and implemented to visualize and evaluate the chosen system. Finally, based on the biological, technical and numerical evaluations, the main tendril behaviors were replicated by proof of concept devices made of smart materials to move towards a practical realization and to replicate the simulated results. The designed proof of concept prototypes showed food repeatability and feasibility.

关键词： climbing plants robotic tendril kinematic model Shape-Memory-Alloy (SMA) grasping

Synthesis of iron（ll） complexes with asymmetric N2O2 coordinating Schiff base-like ligands and their spin crossover properties

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Frontiers of Chemical Science and Engineering 2018年第3期12卷 400-408页

作者： Wolfgang Bauer tanja Ossiander Birgit Weber Department of Chemistry University of Bayreuth 95440 Bayreuth Germany

The synthesis of new Schiff base-like ligands with asymmetric substituents pattern and their iron complexes with pyridine as axial ligand is described. Two of the ligands and one of the iron（II） complexes were characterized by single crystal X-ray structure analysis. One of the the iron（II） complexes shows spin crossover behavior while the others remain in the high spin state. The influence of the reduced symmetry of the ligand on the properties of the complexes is discussed.

关键词： iron Schiffbase-like ligands magnetism spin crossover X-ray structures

Initial Processes of Hydrogen Adsorption on Si（100） Surface

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Communications in Theoretical Physics 2004年第5X期42卷 795-797页

作者： mali WANGJian-Guang WEIShu-Yi WANGGuang-Hou NationalLaboratoryofSolidStateMicrostructuresandDepartmentofPhysics NanjingUniversityNanjing210093China CollegeofPhysics&InformationEngineer HenanNormalUniversityXinxiang453002China

The adsorption of one monolayer H atoms on an ideal Si(100) surface is studied by using the self-consistent tight binding linear muffin-tin orbital method. Energies of adsorption systems of H atoms on different sites are *** is found that the adsorbed H atoms are more favorable on B1 site (bridge site) with a distance 0.056 nm above the Si surface. There does not exist reaction barrier at the Si surface. The layer projected density states are calculated and compared with those of the clean surface. The charge transfers are also investigated.

关键词：氢硅化学吸收作用半导体电学性质

Fully-inorganic strontium incorporated CsPbI_(2)Br perovskite solar cells with promoted efficiency and stability

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Journal of Energy Chemistry 2021年第11期30卷 451-458,I0010页

作者： Jyoti V.Patil Sawanta S.mali Chang Kook Hong Optoelectronic Convergence Research Center School of Advanced Chemical EngineeringChonnam National UniversityGwangju 61186South Korea Polymer Energy Materials Laboratory School of Advanced Chemical EngineeringChonnam National UniversityGwangju 61186South Korea

In the present investigation, we fabricated strontium (Sr2+) incorporated CsPbI2Br-based inorganic perovskite solar cells in ambient conditions. The morphology, crystallinity, absorption, elemental composition and photoluminescence analysis of the bare CsPbI2Br and CsPb1-xSrxI2Br perovskite thin films were studied systematically to investigate the role of Sr2+ incorporation. It is observed that the surface morphology of the CsPbI2Br perovskite thin film has been improved by partial substitution of Pb2+ by Sr2+ which facilitates photoactive black phase-stabilization and defect passivation. The champion device having CsPb0.98Sr0.02I2Br composition exhibited a power conversion efficiency (PCE) of 16.61% which is much higher than the bare device (13.65%). Furthermore, our CsPb0.98Sr0.02I2Br-based devices maintain > 85% of its initial efficiency over 100 h in ambient conditions.

关键词： All-inorganic perovskites Strontium incorporation Deposition method Phase stability Promoted efficiency

Social Effect of Environmental Pollution on Valley-cities in Western China

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Chinese Geographical Science 2009年第1期19卷 8-16页

作者： QU Tao ZHANG Yun LIU Ran DONG mali Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beij＇ing 100101 China Beijing Normal University Beijing 100875 China

Accompanied with the acceleration of urbanization and industrialization,the large and medium-scale valley-cities in the western China are facing environmental problems at respective levels in common. The urban environmental pollution causes economic losses,and also brings out negative effects on urban society. Based on the social investigation method,this paper aims to study the harms to urban society brought by environmental pollution. After the investigation to the inhabitants of six typical valley-cities:Lanzhou,Xining,Chongqing,Baiyin,Luzhou and Zigong,we found that the urban environmental pollution has resulted in negative influences with different levels on residents' physical,psychological,work,recreations,studies and social activities. The problem of environmental pollution has become a serious restriction to sustainable development of cities mentioned above. Herewith,it has become urgent to strengthen the government regulations for controlling urban environmental pollution.

关键词： valley-city environmental pollution social effect western China

First-Principles Studies for the Electronic Structures of Diluted Magnetic Semiconductors （Ga, Fe）As

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Communications in Theoretical Physics 2003年第4X期40卷 499-502页

作者： WEIShu-Yi WANGTian-Xing YANGZong-Xian mali DepartmentofPhysics HenanNormalUniversityXinxiang453002China

First-principles LMTO-ASA band calculations are performed for Ga1-xFezAs (x = 1, 1/4, 1/8) by assuming supercell structures. It is found that the antiferromagnetic (AFM) state is stable for x = 1/4. For x = 1/8, ferromagnetic (FM) state is more stable than AFM state, and no stable magnetic state exists for x = 1. In both the cases the magnetic moments of As and Ga atoms are parallel to those of the nearest Fe atoms due to the p-d hybridization. Fhrther, the band structure shows rather localized Fe 3d state in the gap, and the parallel polarization is confined rather in the vicinity of Fe site.

关键词：电子带计算薄磁性半导体铁磁性镓砷铁计算方法电子结构铁磁结构

Review of fiber superluminescent pulse amplifications

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High Power Laser Science and Engineering 2016年第3期4卷 106-112页

作者： Haitao Zhang Xinglai Shen He Hao Qinghua Li mali Gong Center for Photonics and Electronics State Key Laboratory of Precision Measurement and Instruments Department of Precision Instruments Tsinghua University

High coherence of the laser is indispensable light sources in modern long or short-distance imaging systems, because the high coherence leads to coherent artifacts such as speckle that corrupt image formation. To deliver low coherence pulses in fiber amplifiers, we utilize the superluminescent pulsed light with broad bandwidth, nonlongitudinal mode structure and chaotic mode phase as the seed source of the cascaded fiber amplifiers. The influence of fiber superluminescent pulse amplification(SPA) on the limitations of the performance is analyzed. A review of our research results for SPA in the fibers are present, including the nonlinear theories of this low coherent light sources, i.e., self-focusing(SF), stimulated Raman scattering(SRS) and self-phase modulation(SPM) effects, and the experiment results of the nanosecond pulses with peak power as high as 4.8 MW and pulse energy as much as 55 mJ. To improve the brightness of SPA light in the future work, we introduce our novel evaluation term and a more reasonable criterion, which is denoted by a new parameter of brightness factor for active large mode area fiber designs. A core-doped active large pitch fiber with a core diameter of 190 μm and a mode-field diameter of 180 μm is designed by this method. The designed fiber allows near diffracted limited beam quality operation, and it can achieve 100 mJ pulse energy and 540 W average power by analyzing the mode coupling effects induced by heat.

关键词： superluminescent pulse amplification fiber amplification incoherent nonlinear effects very large mode field

Artemisinin and artemisinin derivatives as anti-fibrotic therapeutics

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Acta Pharmaceutica Sinica B 2021年第2期11卷 322-339页

作者： David Dolivo Pamela Weathers tanja Dominko Department of Surgery Northwestern University-Feinberg School of MedicineChicagoIL 60611USA Department of Biology and Biotechnology Worcester Polytechnic InstituteWorcesterMA 01609USA

Fibrosis is a pathological reparative process that can occur in most organs and is responsible for nearly half of deaths in the developed *** considerable research,few therapies have proven effective and been approved clinically for treatment of *** compounds are best known as antimalarial therapeutics,but they also demonstrate antiparasitic,antibacterial,anticancer,and antifibrotic *** we summarize literature describing anti-fibrotic effects of artemisinin compounds in in vivo and in vitro models of tissue fibrosis,and we describe the likely mechanisms by which artemisinin compounds appear to inhibit cellular and tissue processes that lead to *** consider alternative routes of administration of artemisinin for treatment of internal organ fibrosis,we also discuss the potential for more direct oral delivery of Artemisia plant material to enhance bioavailability and efficacy of artemisinin compared to administration of purified artemisinin drugs at comparable *** is our hope that greater understanding of the broad anti-fibrotic effects of artemisinin drugs will enable and promote their use as therapeutics for treatment of fibrotic diseases.

关键词： Fibrosis Artemisia Artemisinin Artesunate Fibroblast Myofibroblast Scar TGF-β

H∞ control of networked periodic piecewise systems under asynchronous switching with input delay

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Science China(Information Sciences) 2023年第4期66卷 293-294页

作者： Zuolin DENG Panshuo LI mali XING Bin ZHANG School of Automation Guangdong University of Technology Guangdong Provincial Key Laboratory of Intelligent Decision and Cooperative Control

Dear editor, Periodic piecewise systems broadly exist in engineering applications, and different control problems of various periodic piecewise systems have been studied [1–3]. With the development of the network technology, the network-induced delay gives rise to instability and performance degradation of systems, and many effective solutions have been proposed to solve it [4]. However, for networked systems with the switched property,

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