Saad Jamshed Abbasi, Simone Rossi, Paolo Lippi, Piero Maria Orsini, Riccardo Bracci, Manuel G. Catalano, Matteo Bianchi
{"title":"A Mechatronic Device for a Standardized Execution of the Muscle Shortening Maneuver","authors":"Saad Jamshed Abbasi, Simone Rossi, Paolo Lippi, Piero Maria Orsini, Riccardo Bracci, Manuel G. Catalano, Matteo Bianchi","doi":"10.1007/s42235-025-00669-w","DOIUrl":"10.1007/s42235-025-00669-w","url":null,"abstract":"<div><p>Muscle Shortening Maneuver (MSM) is a rehabilitation technique successfully applied to several pathological conditions. The concept is to passively elongate and shorten the target muscle group of the affected limb. As a result, the functionality (muscle strength and range of motion) of that limb is improved. The existing system induces these oscillations manually or without any feedback control, which can compromise the effectiveness and standardization of MSM. In this paper, we present a mechatronic system that can precisely deliver motion oscillations to the upper limb for a controllable execution of MSM. First, we collected the parameters (frequency and amplitude of the oscillations) from a system where a motor was heuristically used by a well-experienced therapist to induce the oscillations (without any feedback control). Based on these specifications, we chose the motor and rebuilt the experimental setup, implementing a sliding mode control with a sliding perturbation observer. With our system, the operator can choose a given frequency and amplitude of the oscillations within the range we experimentally observed. We tested our system with ten participants of different anthropometry. We found that our system can accurately reproduce oscillations in the frequency range 0.8 to 1.2 Hz and amplitude range 2 to 6 cm, with a maximum percentage normalized root mean square error around 7%.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 3","pages":"1085 - 1095"},"PeriodicalIF":5.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and Implementation of a Miniature Stingray-inspired Robot","authors":"Xiongqian Wu, Silin Chen, Qianqian Chen, Wei Wang, Jiawei Dong, Haifei Zhu, Yisheng Guan, Tao Zhang","doi":"10.1007/s42235-025-00668-x","DOIUrl":"10.1007/s42235-025-00668-x","url":null,"abstract":"<div><p>As marine resources gain increasing significance, the development of high-performance propulsion systems has become a critical area focus in underwater robotics research. Drawing inspiration from the unique symmetrical morphology and highly agile oscillatory propulsion of stingrays, a compact stingray-inspired robot has been developed. This robot integrates multiple functional components, including a head, an oscillating guide rod mechanism, a flexible undulatory fin propulsion mechanism, a hybrid-material drive shaft, a control system, an energy supply unit, and a tail. Driven by three motors, the hybrid-material drive shaft facilitates efficient power transmission to each undulatory propulsion unit at varying angles, ensuring consistent and stable propulsion. The robot demonstrates advanced maneuverability, capable of performing 360° rotations and S-shaped trajectories on the water surface. Furthermore, its flexible drive shaft enables three-dimensional underwater locomotion through precise control of bending angles. With a compact design measuring 270 mm in length, 270 mm in width, and 45 mm in height, and weighing only 346 g, the stingray-inspired robot achieves a maximum swimming speed of 0.617 body lengths per second (BL/s). This stingray-inspired robot holds significant potential for applications in underwater environmental monitoring, covert military reconnaissance, and aquaculture.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 3","pages":"1049 - 1059"},"PeriodicalIF":5.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bio-inspired Fog Harvesting Fabric Materials: Principle, Fabrication, Engineering Applications and Challenges","authors":"Xueke Yang, Sha Li, Xiaobo Wang, Xiaoming Qian, Songnan Zhang","doi":"10.1007/s42235-025-00667-y","DOIUrl":"10.1007/s42235-025-00667-y","url":null,"abstract":"<div><p>The shortage of freshwater has become a global challenge, exacerbated by global warming and the rapid growth of the world’s population. Researchers across various fields have made numerous attempts to efficiently collect freshwater for human use. These efforts include seawater desalination through reverse osmosis or distillation, sewage treatment technologies, and atmospheric water harvesting. However, after thoroughly exploring traditional freshwater harvesting methods, it has become clear that bio-inspired fog harvesting technology offers new prospects due to its unique advantages of efficiency and sustainability. This paper systematically introduces the current principles of fog harvesting and wettability mechanism found in nature. It reviews the research status of combining bionic fog harvesting materials with textile science from two distinct dimensions. Additionally, it describes the practical applications of fog harvesting materials in agriculture, industry, and domestic water use, analyzes their prospects and feasibility in engineering projects, discusses potential challenges in practical applications, and envisions future trends and directions for the development of these materials.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 3","pages":"1014 - 1038"},"PeriodicalIF":5.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42235-025-00667-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wencke Krings, Tamina Riesel, Thomas M. Kaiser, Alexander Daasch, Ellen Schulz-Kornas, Stanislav N. Gorb
{"title":"The Influence of the Collective Effect of Tooth–tooth Interaction on the Feeding Efficiency of Gastropods: A Biomimetic Approach","authors":"Wencke Krings, Tamina Riesel, Thomas M. Kaiser, Alexander Daasch, Ellen Schulz-Kornas, Stanislav N. Gorb","doi":"10.1007/s42235-025-00666-z","DOIUrl":"10.1007/s42235-025-00666-z","url":null,"abstract":"<div><p>The radula is a crucial adaptation for food-processing in molluscs. A deeper understanding of the interaction between the radula and the preferred food is lacking, complicating the inference of the precise ecological roles of radular structures. This study presents the first experimental set-up that allows to study the influence of the radular morphology, specifically the degree of tooth-tooth interlocking (so-called <i>collective effect</i>), on the feeding efficiency. For this purpose, physical 3D models of the teeth were designed using CAD software and 3D printing technique. The feeding efficiencies with models of different degree of interlocking were determined by tensile tests, pulling the models trough agar gels with different viscosities. The forces generated by the models and the masses of the removed gel fragments were determined. We found, that radular models with a high degree of tooth–tooth interlocking performed best as they were able to remove most agar. We additionally broke the teeth and determined, that the teeth with the highest degree of interlocking could resist to highest force. Overall, the study highlights the complex interplay between radular morphology and its ecological function, suggesting that even minor morphological alterations can significantly impact the efficiency and effectiveness of food gathering. Understanding these interactions cannot only shed light on the ecological adaptations of molluscs, but provide further insights into development of more effective grinding, scraping, and cleaning technical devices.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 3","pages":"1364 - 1380"},"PeriodicalIF":5.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42235-025-00666-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiachun Zhang, Tingwei Huo, Yuanming Ji, Haozhen Zhan, Shixun Fu, Jianming Wu, Xipeng Wang, Keju Ji
{"title":"Biomimetic Manipulation of Smooth Solid Surfaces for Vacuum High-Temperature and Vibration Environments","authors":"Jiachun Zhang, Tingwei Huo, Yuanming Ji, Haozhen Zhan, Shixun Fu, Jianming Wu, Xipeng Wang, Keju Ji","doi":"10.1007/s42235-024-00645-w","DOIUrl":"10.1007/s42235-024-00645-w","url":null,"abstract":"<div><p>In the fields of optoelectronics and semiconductors, reliable fixation and handling of brittle materials (glass, wafer, etc.) in high-temperature, vacuum, and vibration environments face particular technical challenges. These challenges include the inability of suction cups in a vacuum, the residue of chemical adhesives, and the easy damage of mechanical clamping. In this paper, fluorine-based bionic adhesive pads (FBAPs) obtained using molding technology to imitate gecko micropillar arrays are presented. FBAPs inhibit the substantial decay of adhesive properties at high temperatures and provide stable and reliable performance in vacuum and vibration environments. The results demonstrated that the decayed force values of the normal and tangential strength of the FBAP were only 9.01% and 5.82% of the planar samples when warmed up to 300 °C from 25 °C, respectively. In a vacuum, all FBAPs exhibit less than 20% adhesion attenuation, and in a vibrational environment, they can withstand accelerations of at least 4.27 g. The design of the microstructure arrays enables the realization of efficient and non-destructive separation through mechanical rotation or blowing. It provides a bionic material basis for the fixation of brittle materials on smooth surfaces under complex environments and for transportation automation.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 2","pages":"755 - 766"},"PeriodicalIF":4.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi Xiong, Haojie Liu, Bingxing Chen, Yanjie Chen, Ligang Yao, Zongxing Lu
{"title":"Whole-Body Hybrid Torque-Position Control for Balancing with a New Wheeled Bipedal Robot","authors":"Yi Xiong, Haojie Liu, Bingxing Chen, Yanjie Chen, Ligang Yao, Zongxing Lu","doi":"10.1007/s42235-025-00657-0","DOIUrl":"10.1007/s42235-025-00657-0","url":null,"abstract":"<div><p>The wheeled bipedal robots have great application potential in environments with a mixture of structured and unstructured terrain. However, wheeled bipedal robots have problems such as poor balance ability and low movement level on rough roads. In this paper, a novel and low-cost wheeled bipedal robot with an asymmetrical five-link mechanism is proposed, and the kinematics of the legs and the dynamics of the Wheeled Inverted Pendulum (WIP) are modeled. The primary balance controller of the wheeled bipedal robot is built based on the Linear Quadratic Regulator (LQR) and the compensation method of the virtual pitch angle adjusting the Center of Mass (CoM) position, then the whole-body hybrid torque-position control is established by combining attitude and leg controllers. The stability of the robot’s attitude control and motion is verified with simulations and prototype experiments, which confirm the robot’s ability to pass through complex terrain and resist external interference. The feasibility and reliability of the proposed control model are verified.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 2","pages":"626 - 641"},"PeriodicalIF":4.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yitao Zhang, Yiqing Yuan, Haiyang Duan, Pengcheng Zhu, Yanchao Mao
{"title":"Bionic Hydrogel-based Stretchable Devices for Bioelectronics Applications","authors":"Yitao Zhang, Yiqing Yuan, Haiyang Duan, Pengcheng Zhu, Yanchao Mao","doi":"10.1007/s42235-025-00670-3","DOIUrl":"10.1007/s42235-025-00670-3","url":null,"abstract":"<div><p>Bionic hydrogels offer significant advantages over conventional counterparts, boasting superior properties like enhanced adhesion, stretchability, conductivity, biocompatibility and versatile functionalities. Their physicochemical resemblance to biological tissues makes bionic hydrogels ideal interfaces for bioelectronic devices. In contrast, conventional hydrogels often exhibit inadequate performance, such as easy detachment, lack of good skin compliance, and inadequate conductivity, failing to meet the rigorous demands of bioelectronic applications. Bionic hydrogels, inspired by biological designs, exhibit exceptional physicochemical characteristics that fulfill diverse criteria for bioelectronic applications, driving the advancement of bioelectronic devices. This review first introduces a variety of materials used in the fabrication of bionic hydrogels, including natural polymers, synthetic polymers, and other materials. Then different mechanisms of hydrogel bionics, are categorized into material bionics, structural bionics, and functional bionics based on their bionic approaches. Subsequently, various applications of bionic hydrogels in the field of bioelectronics were introduced, including physiological signal monitoring, tissue engineering, and human-machine interactions. Lastly, the current development and future prospects of bionic hydrogels in bioelectronic devices are summarized. Hopefully, this comprehensive review could inspire advancements in bionic hydrogels for applications in bioelectronic devices.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 3","pages":"982 - 1013"},"PeriodicalIF":5.8,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42235-025-00670-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Antibacterial Properties of Carbon Fiber/Polyether Ether Ketone Artificial Bone Composites Modified by Black Phosphorus Coating Assisted by Wet Chemical Nitration Surface Treatment","authors":"Luxiao Sang, Hao Li, Runze Shi, Wen Qin, Tong Xing, Shengnan Qin, Aoqun Jian","doi":"10.1007/s42235-025-00662-3","DOIUrl":"10.1007/s42235-025-00662-3","url":null,"abstract":"<div><p>The poor surface antibacterial properties are one of the important factors limiting the application of Carbon Fibers Reinforced Polyetheretherketone (CFR-P) composites as artificial bone replace materials. Some of the Two-Dimensional (2D) nanomaterials with unique lamellar structures and biological properties have been demonstrated to have excellent antibacterial properties. Antibacterial properties can be improved by feasible chemical strategies for preparing 2D nanomaterials coating on the surface of CFR-P. In this work, Black Phosphorus (BP) coating was prepared on the originally chemically inert CFR-P surface based on wet chemical pretreatment. The physical and chemical properties, including surface microstructure, chemical composition and state, roughness and hydrophilicity were characterized. The antibacterial ratios against <i>Staphylococcus aureus</i> (<i>S. aureus</i>), <i>Escherichia coli</i> (<i>E. coli</i>), and <i>Streptococcus mutans</i> (<i>S. mutans</i>) were evaluated. The results indicated that hydrophilicity of BP coating on CFR-P was significantly higher compared to that of the pure CFR-P. Wet chemical pretreatment using mixed acid reagents (concentrated sulfuric acid and concentrated nitric acid) introduced hydroxyl, carboxyl and nitro groups on CFR-P. The BP coating exhibited the antibacterial rate of over 98% against both <i>S. aureus</i> and <i>E. coli</i>. In addition, the antibacterial rate of BP coating against the main pathogenic bacteria of dental caries, <i>Streptococcus mutans</i>, reached 45%.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 2","pages":"838 - 850"},"PeriodicalIF":4.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dolphin-Inspired Skin Microvibrations Offer a Novel Pressure-Dominated Drag Reduction Mechanism","authors":"Dongyue Wang, Hao Liu","doi":"10.1007/s42235-024-00638-9","DOIUrl":"10.1007/s42235-024-00638-9","url":null,"abstract":"<div><p>The cutaneous ridges on dolphin skin have long been believed to effectively reduce friction drag, thereby contributing to overall drag reduction. However, since these skin ridges are oriented perpendicular to the swimming direction, they also generate additional pressure drag, raising questions about the impact of the shape-induced pressure forces on swimming. Inspired by the microvibrations observed on dolphin skin, we hypothesize that the microstructure on dolphin skin is not static but dynamically oscillates in the form of Longitudinal Micro-Ultrasonic Waves (LMUWs). To explore this, we carried out a series of Computational Fluid Dynamics (CFD) simulations based on Large Eddy Simulation (LES) model to investigate the impact of pressure drag on the total drag acting on an oscillating skin surface under realistic turbulent flow conditions. The results indicate that the dynamic skin oscillations induce a new dynamic Stokes boundary layer, which has the potential to convert pressure drag into a negative force, thereby reducing total drag under the influence of traveling LMUW excitations. Furthermore, a relative velocity <i>ξ</i>, defined as the difference between the wave speed <i>c</i> and the external flow speed <i>U</i>, is introduced to evaluate the drag-reduction effect dominated by pressure. The findings reveal that pressure drag remains negative when <i>ξ</i> > 0. As <i>ξ</i> increases, the thrust effect induced by negative pressure becomes increasingly significant, ultimately counteracting friction drag and eliminating total drag. This pressure-dominated drag reduction mechanism thus demonstrates a novel strategy for the drag reduction technology and the potential of unveiling the mysteries behind dolphin swimming.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 2","pages":"793 - 804"},"PeriodicalIF":4.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42235-024-00638-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luis Santamaría, Laura Suarez Fernandez, Manuel Garcia-Diaz, José González Pérez, Mónica Galdo
{"title":"Bioinspired Trailing Edge Serrations for Vertical Axis Wind Turbine Blades in Urban Environments: Performance Effects","authors":"Luis Santamaría, Laura Suarez Fernandez, Manuel Garcia-Diaz, José González Pérez, Mónica Galdo","doi":"10.1007/s42235-025-00660-5","DOIUrl":"10.1007/s42235-025-00660-5","url":null,"abstract":"<div><p>Biomimetics has recently emerged as an interesting approach to enhance renewable energy technologies. In this work, bioinspired Trailing Edge Serrations (TES) were evaluated on a typical Vertical Axis Wind Turbine (VAWT) airfoil, the DU06-W200. As noise reduction benefits of these mechanisms are already well-established, this study focuses on their impact on airfoil and VAWT performance. A saw-tooth geometry was chosen based on VAWT specifications and existing research, followed by a detailed assessment through wind tunnel tests using a newly developed aerodynamic balance. For a broad spectrum of attack angles and Reynolds numbers, lift, drag, and pitching moments were carefully measured. The results show that TES enhance the lift-to-drag ratio, especially in stalled conditions, and postpone stall at negative angles, expanding the effective performance range. A notable increase in pitching moment also is also observed, relevant for blade-strut joint design. Additionally, the impact on turbine performance was estimated using an analytical model, demonstrating excellent accuracy when compared against previous experimental results. TES offer a modest 2% improvement in peak performance, though they slightly narrow the optimal tip-speed ratio zone. Despite this, the potential noise reduction and performance gains make TES a valuable addition to VAWT designs, especially in urban settings.</p></div>","PeriodicalId":614,"journal":{"name":"Journal of Bionic Engineering","volume":"22 2","pages":"822 - 837"},"PeriodicalIF":4.9,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42235-025-00660-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}