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A Magnetic-Driven Multi-motion Robot with Position/Orientation Sensing Capability

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Research 2024年第1期2023卷 675-685页

作者： Liwen zhang Song Zhao Xinzhao Zhou Xueshan Jing Yu Zhou Yan Wang Yantong Zhu Xiaolin Liu Zehui Zhao deyuan zhang Lin Feng huawei chen School of Mechanical Engineering and Automation Beihang UniversityBeijingChina Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijingChina

Miniature magnetic-driven robots with multimode motions and high-precision pose sensing capacity(position and orientation)are greatly demanded in in situ manipulation in narrow opaque enclosed *** magnetic robots have been carried out,whereas their deformations normally remain in single mode,and the lack of the robot’s real-time status leads to its beyond-sight remagnetization and manipulation being *** function integration of pose sensing and multimode motion is still of ***,a multimotion thin-film robot is created in a novel multilayer structure with a magneticdriven layer covered by a heating-sensing conductive *** a heating-sensing layer not only can segmentally and on-demand heat the magnetic-driven layer for in situ magnetization reprogramming and multimode motions but also can precisely detect the robot’s pose(position and orientation)from its electrical-resistance effect by creating a small deformation under preset magnetic fields.

关键词： robot Robot motion

Bioinspired Functional Surfaces for Medical Devices

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Chinese Journal of Mechanical Engineering 2022年第3期35卷 37-50页

作者： Liwen zhang Guang Liu Yurun Guo Yan Wang deyuan zhang huawei chen School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijing 100191China

Medical devices are a major component of precision medicine and play a key role in medical treatment,particularly with the rapid development of minimally invasive surgery and wearable *** tissue contact properties strongly affect device performance and patient health(e.g.,heat coagulation and slipperiness on surgical graspers).However,the design and optimization of these device surfaces are still indistinct and have no supporting *** such conditions,natural surfaces with various unique functions can provide *** review summarizes the current progress in natural functional surfaces for medical devices,including ultra-slipperiness and strong wet *** underlying mechanisms of these surfaces are attributed to their coupling effects and featured micronano *** on various medical requirements,adaptable designs and fabrication methods have been ***,various medical device surfaces have been validated to achieve enhanced contact *** on these studies,a more promising future for medical devices can be achieved for enhanced precision medicine and human health.

关键词： Bioinspired functional surfaces Medical devices Wet attachment Interfacial liquid Micro-nano structures Wearable devices

Applications of bioinspired approaches and challenges inmedical devices

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Bio-Design and Manufacturing 2021年第1期4卷 146-148页

作者： huawei chen Yi zhang Liwen zhang Xilun Ding deyuan zhang School of Mechanical Engineering and Automation Beihang UniversityBeijingChina Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijingChina

Urgent requirements of medical devices Precision medicine has gradually become a development strategy in many countries and attracted worldwide attention in recent years due to the increasing concerns in public *** the definition of precision medicine has less or more difference from the viewpoints of different fields,the demands on the properties of medical devices or medical materials involving biocompatibility and anti-thrombosis are gradually growingmuch more diverse and much more urgent than ever[1].This trend brings up many new research topics about materials,mechanical systems and sensors to develop advanced medical *** to design and on-demand fabricate the bio-materials,bio-interface and bio-systems to meet the urgent demands of medical devices is still a challenge for us.

关键词： interface urgent viewpoint

The Prey Capture Mechanism of Micro Structure on the Sarracenia Judith Hindle Inner Surface

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Journal of Bionic Engineering 2018年第1期15卷 34-41页

作者： Yang Gan Huawel chen Tong Ran pengfei zhang deyuan zhang School of Mechanical Engineering and Automation Beihang University Beijing 1 O0191 China

Low friction surface has attracted considerable attention due to its potential application in various fields. As a typical carnivorous plant, Sarracenia Judith Hindle possesses unique slippery surface to capture prey especially in wet environment. In order to make clear the low friction mechanism, structural characterization was carried out and unique inclined micro-thorn structure was found on the inner wall surface. Micro-droplets harvest on the surface of the micro-thorn was discovered via the observation in wet environment. Friction force measurement was conducted by sliding the ants＇ footpad on the inner surface and polymer replica surfaces, which demonstrated that the friction force decreases on those surfaces in wet environment or inward direction. Further analysis manifested that the slippery inner surface grown with hierarchical micro-thorn structure leads to the friction decrease, and that is the fundamental mechanism for prey capture and retention in the pitcher of carnivorous plant Sarracenia Judith Hindle.

关键词： prey capture hierarchical microstructure Sarracenia low friction surface anisotropic structure

Biomimetic Drag Reduction Study on Herringbone Riblets of Bird Feather

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Journal of Bionic Engineering 2013年第3期10卷 341-349页

作者： huawei chen Fugang Rao Xiaopeng Shang deyuan zhang Ichiro Hagiwara School of Mechanical Engineering and Automation Beihang University Beijing 100191 P. R. China Department of Mechanical Science and Engineering Tokyo Institute of Technology Tokyo 152-8550 Japan

Birds have gradually formed various excellent structures such as streamlined shape and hollow shaft of feather to improve their flying performance by millions of years of natural selection. As typical property of bird feather, herringbone riblets align along the shaft of each feather, which is caused by perfect link of barbs, especially for the primary and secondary feathers of wings. Such herringbone riblets of feather are assumed to have great impact on drag reduction. In this paper, microstructures of secondary feathers of adult pigeons are investigated by SEM, and their structural parameters are statistically obtained. Based on quantitative analysis of feather structure, novel biomimetic herringbone riblets with narrow smooth edge are proposed to reduce surface drag. In comparison with traditional microgroove riblets and other drag reduction structures, the drag reduction rate of the proposed biomimetic herringbone riblets is experimentally clarified up to 16%, much higher than others. Moreover, the drag reduction mechanism of herringbone riblets are also confirmed and exploited by CFD.

关键词： biomimetic surface drag reduction herringbone riblets bird feather

Bioinspired Unidirectional Liquid Transport Micro-nano Structures:A Review

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Journal of Bionic Engineering 2021年第1期18卷 1-29页

作者： Liwen zhang Guang Liu huawei chen Xiaolin Liu Tong Ran Yi zhang Yang Gan deyuan zhang School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijing 100191China

Unidirectional liquid transport without any need of external energy has drawn worldwide attention for its potential applications in various fields such as microfluidics,biomedicine and mechanical *** nature,numerous creatures have evolved such extraordinary unidirectional liquid transport ability such as spider sik,Sarracenia's trichomes,and Nepenthes alata's peristome,*** review summarizes the current progresses of natural unidirectional liquid transport on 1-Dimensional(1D)linear structure and 2-Dimensional(2D)surface *** driving force of unidirectional liquid transport which is determined by unique structure exist distinct differences in *** fundamental understanding of 1D and 2D unidirectionaliquid transport especially about hierarchical structural characteristics and their transport mechanism were concentrated,and various bioinspired fabrication methods are also *** applications of bioinspired directional liquid transport are demonstrated especially in fields of microfluidies,biomedical devices and anti-icing *** newly developed smart materials,various liquid transport regulation strategies are also summarized for the control of transport speed,direction guiding,***,we provide new insights and future perspectives of the directional transport materials.

关键词： bioinspiration unidirectional liquid transport microfluidics smart materials Nepenthes alata Sarracenia trichomes

Bio-inspired drag reduction surface from sharkskin

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Biosurface and Biotribology 2018年第2期4卷 39-45页

作者： Dengke chen Yang Liu huawei chen deyuan zhang School of Mechanical Engineering and Automation Beihang UniversityHaidian DistrictBeijingPeople's Republic of China

Nature evolution provides nature surface treasures with special and fascinating surface function to inspiredesign,such as the drag reduction of *** this overview,the morphology and mechanism of the sharkskinexplained from different aspects,and various methods of fabricating surfaces with sharkskin morphology areillustrated in details,and then the applications in different fluid engineering are demonstrated in *** overviewwill improve the comprehension of the morphology and mechanisms of sharkskin,and methods of fabricating thesurface with morphology,and the recent applications in engineering.

关键词： surface details mechanism

High-precision bio-replication of synthetic drag reduction shark skin

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Chinese Science Bulletin 2011年第9期56卷 938-944页

作者： zhang deyuan LI YuanYue HAN Xin LI Xiang chen huawei Bionic and Micro/Nano/Bio Manufacturing Technology Research Center Beihang University Beijing 100191 China School of Agricultural and Food Engineering Shandong University of Technology Zibo 255049 China

Nano-long chains were grafted over the replicated micro-grooves of shark skin in a novel attempt to replicate bio-synthetic drag reduction structure with high precision through synthetic bio-replication. Pre-treated shark skin was used as casting template to prepare a flexible female die of silicone rubber by soft die formation. A waterborne epoxy resin was then used to graft long-chains of drag reduction agent and prepare a synthetic drag reduction shark skin with nano-long chain drag reduction interface and lifelike micro-grooves. Replication precision analysis shows that this technology could replicate the complicated three-dimensional morphology of a biological drag reduction surface with high precision. Drag reduction experiments show that the material had an excellent synthetic drag reduction effect, with a maximal drag reduction rate of up to 24.6% over the velocities tested.

关键词：生物合成减阻剂鲨鱼皮高精度复制水性环氧树脂铸造模具精度分析

Reconfigurable Vortex-like Paramagnetic Nanoparticle Swarm with Upstream Motility and High Body-length Ratio Velocity

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Research 2023年第4期2023卷 361-377页

作者： Luyao Wang Han Gao Hongyan Sun Yiming Ji Li Song Lina Jia Chutian Wang Chan Li deyuan zhang Ye Xu huawei chen Lin Feng School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijing 100191China Center of Soft Matter Physics and Its Applications Beihang UniversityBeijing 100191China.

Drug delivery systems with high-targeted doses can minimize excipients,reduce side effects,and improve *** blood circulation is a complex circulatory system,and the motion control of microrobots in the static flow field in vitro is completely different from in *** to achieve precise counterflow motion for targeted drug delivery without vascular blockage and immune rejection is the biggest challenge for micro-nano ***,we propose a control method that enables vortex-like paramagnetic nanoparticle swarm(VPNS)to move upstream against the *** mimicking the clustering motion of wild herring schools and the rolling of leukocytes,VPNS are incredibly stable even when subjected to high-intensity jet impacts in the blood environment,can travel upstream,anchor at the target location,and dissipate when the magnetic field is withdrawn,which greatly reduces the risk of *** can also upstream along the vessel wall without an additional energy source and has a marked targeted therapeutic effect on subcutaneous tumors.

关键词： magnetic Velocity upstream