Review
Engineering, Mechanical
Gianluca Rizzello
Summary: This paper provides an overview of cooperative actuator and sensor systems based on dielectric elastomer (DE) transducers. DEs, made of a flexible capacitor and a compliant electrode, can function as actuators or sensors. The unique features of DE technology, such as large deformation, high compliance, flexibility, energy efficiency, and low cost, make it attractive for mechatronic systems. By arranging several DEs in an array-like configuration, new applications and features can be achieved through synergistic operations. The paper reviews recent advances, discusses applications, and explores challenges and perspectives for future development of cooperative DE systems.
Article
Computer Science, Information Systems
Yawu Wang, Yue Zhang, Jundong Wu, Peng Huang, Pan Zhang
Summary: The paper proposes a tracking control method for DEAs based on the inverse dynamic compensation method. Experimental results show that the proposed method is effective and excellent.
INFORMATION SCIENCES
(2022)
Article
Automation & Control Systems
Yue Wang, Xiuyu Zhang, Zhi Li, Xinkai Chen, Chun-Yi Su
Summary: This article proposes a butterfly-like hysteresis model and a neural network based adaptive implicit inverse control scheme for describing and controlling butterfly-like hysteresis. The effectiveness of the proposed modeling and control methods is validated experimentally.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Mechanical
Yaguang Guo, Liwu Liu, Yanju Liu, Jinsong Leng
Summary: Dielectric elastomers, as a typical electroactive polymer, can be used in actuators, sensors, and soft robots. This study presents an antagonistic cone dielectric elastomer actuator with a large deformation range, and derives a theoretical model to design geometric parameters and explain the deformation mechanism. The theoretical model is shown to be suitable for predicting the actuator's performance through comparison with experimental results.
EXTREME MECHANICS LETTERS
(2021)
Article
Instruments & Instrumentation
T. Martinez, J. Chavanne, A. Walter, Y. Civet, Y. Perriard
Summary: This paper proposes an improvement of a dielectric elastomer actuator by implementing a constraint on the radial displacement, which increases the stability of the device.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Automation & Control Systems
Zhi Li, Zikang Li, Hongzhi Xu, Xiuyu Zhang, Chun-Yi Su
Summary: Differential equation-based hysteresis models are efficient approaches for predicting hysteresis effects. This article proposes a butterfly fractional-order backlash-like hysteresis model to describe butterfly hysteresis behavior, by developing a twist mechanism and integrating a fractional-order expression. The model also considers the buckling threshold characteristic of the elastomer membrane in dielectric elastomer actuators.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Jin Li, Yao Zhang, TuanDung Nguyen, Lijie Sun, DanhQuang Tran
Summary: With their large deformability and high energy density, Dielectric elastomers (DEs) have attracted interest in the field of soft robotics. However, the dynamic performance and energy efficiency of DE actuators are affected by the dissipation mechanisms. This study presents a modeling approach to describe and predict the influence of these mechanisms on the dynamic behavior.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Hong Wang, Liang Yang, Xining Zhang, Marcelo H. Ang
Summary: This study determined the prestretching indexes of dielectric elastomers through measuring tensile properties and discussed the actuation displacement and output force of the conical dielectric elastomer actuator with different prestretching index and preloading conditions. The study proposed three indexes to calculate the strain energy density of the actuator and found that a large prestretching ratio could cause instability in the dielectric elastomers. The Gent model was identified as better reflecting the nonlinear deformation behavior of the actuator.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Instruments & Instrumentation
Xiuyu Zhang, Hongzhi Xu, Zikang Li, Feng Shu, Zhi Li
Summary: Butterfly hysteresis behaviors are more complex than single-loop hysteresis behaviors, and existing models are unable to accurately predict butterfly hysteresis. Introducing new butterfly hysteresis operators and neural networks can improve the accuracy of modeling.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Mechanics
Marzie Majidi, Masoud Asgari
Summary: This study focuses on the electromechanical behavior of fiber-reinforced tubular dielectric elastomer actuators (TDEAs) and analyzes the induced coupled bending-twisting deformation through numerical and analytical methods. The presented model is validated and used to explore the behavior of the TDEA under different loading and boundary conditions. The results show that fiber orientation has a significant effect on the stability of the TDEA, and coupled deformations in different directions are confirmed.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Physics, Applied
Ardi Wiranata, Makoto Kanno, Naoki Chiya, Hozuma Okabe, Tatsuhiro Horii, Toshinori Fujie, Naoki Hosoya, Shingo Maeda
Summary: To increase safety and reduce costs, DEAs should operate at low voltages. One strategy to achieve this is by reducing the thickness of the dielectric elastomer membrane. This research demonstrates DEAs with nanometric uniform thickness that can operate at low voltages and high frequencies.
APPLIED PHYSICS EXPRESS
(2022)
Article
Automation & Control Systems
Xiuyu Zhang, Yuehang Liu, Xinkai Chen, Zhi Li, Chun-Yi Su
Summary: This article proposes an adaptive pseudoinverse control scheme based on fuzzy logic system (FLS) and barrier Lyapunov function (BLF) for a class of state-constrained hysteretic nonlinear systems. The hysteresis nonlinearity in the actuators is considered and mitigated by the proposed pseudoinverse control algorithms. The all-state-constrained control problem of the Preisach hysteresis model is overcome with the aid of an FLS, BLFs, and the proposed hysteresis pseudoinverse algorithms.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Engineering, Electrical & Electronic
Keishi Naito, Yohei Miwa, Ryoma Ando, Kisaragi Yashiro, Shoichi Kutsumizu
Summary: The DIC elastomer showed stable dielectric properties and high blocking stress, making it a sustainable and high-performance DEA. The Young's modulus of DIC was influenced by the electric field but had no effect on the blocking stress, demonstrating its resilience and self-healing capabilities.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Multidisciplinary
Hongbo Fu, Yong Jiang, Jian Lv, Yao Huang, Zipeng Gai, Ying Liu, Pooi See Lee, Hong Xu, Daming Wu
Summary: This study presents a reusable multilayer dielectric elastomer actuators (DEAs) with detachable and reconfigurable structure. Scalable compliant electrodes were prepared using continuous spatial confining forced network assembly (CSNA) method, and combined with vacuum lamination (VL) approach to achieve good attachability and detachability with VHB dielectric elastomer. The fabricated electrodes can work continuously over 10,000 cycles at 40% strained stretching, and maintain a smooth surface for constructing multilayer DEAs. Additionally, the electrodes can also be recovered and reused for building new actuators due to the detachable configuration. A detachable multilayer spring roll DEA was demonstrated as a lower limb assistive device, achieving approximately 3.1 degrees of flexion and extension movement of knee models under a voltage of 7 kV.
Article
Materials Science, Multidisciplinary
Yuanbo Zhu, Nian Liu, Zheqi Chen, Honghui He, Zhenwei Wang, Zeming Gu, Yuewei Chen, Jie Mao, Yingwu Luo, Yong He
Summary: Insects with small and light bodies can inspire the design of soft robots for various applications. However, creating insect-scale robots with fast mobility, good robustness, and impact-perception capability remains a challenge in engineering.
ACS MATERIALS LETTERS
(2023)
Article
Biochemical Research Methods
Aleix Lafita, Pengfei Tian, Robert B. Best, Alex Bateman
Article
Multidisciplinary Sciences
Pengfei Tian, Annette Steward, Renuka Kudva, Ting Su, Patrick J. Shilling, Adrian A. Nickson, Jeffrey J. Hollins, Roland Beckmann, Gunnar von Heijne, Jane Clarke, Robert B. Best
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
Article
Health Care Sciences & Services
Angelina Isabella Mellentin, Bent Nielsen, Anette Sogaard Nielsen, Fei Yu, Anna Mejldal, Dorthe Gruner Nielsen, Elsebeth Stenager
JMIR MHEALTH AND UHEALTH
(2019)
Article
Biochemistry & Molecular Biology
Aleix Lafita, Pengfei Tian, Robert B. Best, Alex Bateman
CURRENT OPINION IN STRUCTURAL BIOLOGY
(2019)
Article
Multidisciplinary Sciences
Grant Kemp, Ola B. Nilsson, Pengfei Tian, Robert B. Best, Gunnar von Heijne
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Biochemical Research Methods
Pengfei Tian, Robert B. Best
PLOS COMPUTATIONAL BIOLOGY
(2020)
Article
Mechanics
Weiping Qiu, Jianbo Wang, Wangyu Liu, Zhenhong Xie, Pengfei Tian, Weigui Xie
Summary: In this paper, a novel tire curing equipment (VIMD) is designed to improve the traditional vulcanization process for automobile tires. By increasing the number of drum tiles and adopting the structural design method of arranging the link mechanisms cross-symmetrically, the VIMD achieves excellent dimensional accuracy and structural stability.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Biology
Florian Wruck, Pengfei Tian, Renuka Kudva, Robert B. Best, Gunnar von Heijne, Sander J. Tans, Alexandros Katranidis
Summary: The study by Wruck et al. investigates the folding of the small zinc-finger domain ADR1a inside and at the vestibule of the ribosomal tunnel, using optical tweezers, single-molecule FRET, and molecular dynamics simulations. They find that the ribosomal tunnel accelerates folding while stabilizing the folded state like chaperonins. This study provides insights into the role of the ribosomal tunnel in the folding dynamics of nascent polypeptides.
COMMUNICATIONS BIOLOGY
(2021)
Article
Biology
Tomas Laursen, Hiu Yue Monatrice Lam, Kasper Kildegaard Sorensen, Pengfei Tian, Cecilie Cetti Hansen, Jay T. Groves, Knud Jorgen Jensen, Sune M. Christensen
Summary: Laursen et al. investigated the role of membrane anchoring for the organization and efficiency of P450-driven plant metabolism. They reported an original experimental design to monitor interactions between anchoring segments of membrane-bound enzymes at the single molecule level, using the cytochrome P450 oxidoreductase (POR) transmembrane segment as a model, and proposed that membrane anchoring has played a key role in the evolution of P450-based metabolic pathways in plants.
COMMUNICATIONS BIOLOGY
(2021)
Editorial Material
Biochemistry & Molecular Biology
Xiakun Chu, Yong Wang, Pengfei Tian, Wenfei Li, Davide Mercadante
FRONTIERS IN MOLECULAR BIOSCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Pengfei Tian, Adrien Lemaire, Fabien Senechal, Olivier Habrylo, Viviane Antonietti, Pascal Sonnet, Valerie Lefebvre, Frederikke Isa Marin, Robert B. Best, Jerome Pelloux, Davide Mercadante
Summary: Efficiently designing functional proteins with higher thermal stability is still challenging, especially for highly diverse sequence variants. However, optimizing sequence design based on evolutionary fitness can help improve protein stability. In this study, we used a generative evolution fitness model to design artificial sequences for a proteinaceous inhibitor of pectin methylesterase enzymes. The majority of the designs were functional, and some even showed improved thermal stability. This method has the potential to expand the sequence space of functional proteins with valuable traits for industrial applications and scientific research.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Business
Fei Yu, Ralf Stolzenberg, Alexander Brem
Summary: Traditionally, prototypes were developed by designers and engineers to visualize concepts and test features, with less involvement from other disciplines. However, in today's new product development, interdisciplinary approaches are necessary to solve complex problems. Unfortunately, there is limited evidence on the value of interdisciplinary approaches in prototyping practice. This study aims to investigate the values and impacts of both mono-disciplinary and interdisciplinary approaches in prototyping practice through a workshop. It is found that while technical skills are essential, soft skills such as communication and process management can significantly enhance prototype performance. Fixation effects are observed in both mono-disciplinary and interdisciplinary groups.
JOURNAL OF ENGINEERING AND TECHNOLOGY MANAGEMENT
(2023)
Article
Management
Nan Wang, Victor Tiberius, Xiangxiang Chen, Alexander Brem, Fei Yu
Summary: By analyzing a sample of over 163,000 ideas from the Xiaomi MIUI community, the study found that user status, user initiative contribution, and community recognition have significantly positive effects on idea preselection, while user response contribution has no influence. Additionally, the characteristics of idea presentation have an inverted U-curve relationship with idea adoption, and community absorptive capacity has a moderate effect on this curvilinear relationship.
TECHNOLOGY ANALYSIS & STRATEGIC MANAGEMENT
(2021)
Proceedings Paper
Education & Educational Research
Fei Yu, Md Saifuddin Khalid
PROCEEDINGS OF THE 18TH EUROPEAN CONFERENCE ON E-LEARNING (ECEL 2019)
(2019)
Meeting Abstract
Biochemistry & Molecular Biology
Aleix Lafita, Pengfei Tian, Robert Best, Alex Bateman