1
|
Yu Y, Hu H, Dai Y, Li K. Modeling the light-powered self-rotation of a liquid crystal elastomer fiber-based engine. Phys Rev E 2024; 109:034701. [PMID: 38632774 DOI: 10.1103/physreve.109.034701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/08/2024] [Indexed: 04/19/2024]
Abstract
Self-oscillating systems possess the ability to convert ambient energy directly into mechanical work, and new types of self-oscillating systems are worth designing for practical applications in energy harvesters, engines and actuators. Taking inspiration from the four-stroke engine. A concept for a self-rotating engine is presented on the basis of photothermally responsive materials, consisting of a liquid crystal elastomer (LCE) fiber, a hinge and a turnplate, which can self-rotate under steady illumination. Based on the photo-thermal-mechanical model, a nonlinear theoretical model of the LCE-based engine under steady illumination is proposed to investigate its self-rotating behaviors. Numerical calculations reveal that the LCE-based engine experiences a supercritical Hopf bifurcation between the static regime and the self-rotation regime. The self-rotation of the LCE-based engine originates from the photothermally driven strain of the LCE fiber in illumination, and its continuous periodic motion is sustained by the correlation between photothermal energy and damping dissipation. The Hopf bifurcation conditions are also explored in detail, as well as the vital system parameters affecting self-rotation frequency. Compared to the abundant existing self-oscillating systems, this conceptual self-rotating LCE-based engine stands out due to its simple and lightweight structure, customizable dimensions and high speed, and it is expected to offer a broader range of design concepts applicable to soft robotics, energy harvesters, medical instruments, and so on.
Collapse
Affiliation(s)
- Yong Yu
- School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Haoyu Hu
- School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Yuntong Dai
- School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Kai Li
- School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| |
Collapse
|
2
|
Schultzke S, Scheuring N, Puylaert P, Lehmann M, Staubitz A. A Photomechanical Film in which Liquid Crystal Design Shifts the Absorption into the Visible Light Range. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302692. [PMID: 37661584 PMCID: PMC10602558 DOI: 10.1002/advs.202302692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/28/2023] [Indexed: 09/05/2023]
Abstract
Liquid crystalline polymer networks (LCN) with azobenzene monomers bend reversibly under UV-light irradiation, combining photomechanical and photothermal effects. However, the harmful nature of UV-light limits their use in biology and soft robotics. Although visible light-absorbing tetra-ortho-fluoro-substituted azobenzenes exist, liquid crystalline monomers have never been prepared. Previously, such azobenzenes were added as photoactive additives (up to 10%) to otherwise passive liquid crystalline polymer networks. In this work, a molecular design of a liquid crystalline, polymerizable azobenzene switchable by visible light is presented. The monomer assembles in a highly fluid nematic phase, but polymerizes in a layered smectic C phase. The films are produced solely from the monomer without additional liquid crystalline components and are actuated with visible light. Bending experiments in air and under water differentiate photomechanical and photothermal effects. Remarkably, a 60 µm splay aligned film maintains its deformation for hours, slowly reverting over days. Monomer liquid crystallinity is characterized using differential scanning calorimetry (DSC), wide-angle X-ray scattering (WAXS), and polarized optical microscopy (POM); polymer films are analyzed using WAXS and DSC on a homogeneously aligned film. The synthetic procedure is high yielding and polymer film fabrication is scalable, which enables the use of safe and efficient photomechanical LCNs in soft robotics, engineering and biology.
Collapse
Affiliation(s)
- Sven Schultzke
- University of BremenInstitute for Analytical and Organic ChemistryLeobener Straße 7D‐28359BremenGermany
- University of BremenMAPEX Center for Materials and ProcessesBibliothekstraße 1D‐28359BremenGermany
| | - Nikolai Scheuring
- University of WürzburgInstitute of Organic ChemistryAm HublandD‐97074WürzburgGermany
| | - Pim Puylaert
- University of BremenInstitute for Inorganic Chemistry and CrystallographyLeobener Straße 7D‐28359‐BremenGermany
| | - Matthias Lehmann
- University of WürzburgInstitute of Organic ChemistryAm HublandD‐97074WürzburgGermany
| | - Anne Staubitz
- University of BremenInstitute for Analytical and Organic ChemistryLeobener Straße 7D‐28359BremenGermany
- University of BremenMAPEX Center for Materials and ProcessesBibliothekstraße 1D‐28359BremenGermany
| |
Collapse
|
3
|
Takatoh K, Kobayashi M, Ito M. Optical Filters with Asymmetric Transmittance Depending on the Incident Angle, Produced Using Liquid Crystalline Ink (Louver LC Filters). MATERIALS (BASEL, SWITZERLAND) 2023; 16:5584. [PMID: 37629875 PMCID: PMC10456562 DOI: 10.3390/ma16165584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/07/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023]
Abstract
In many situations in everyday life, sunlight levels need to be reduced. Optical filters with asymmetric transmittance dependent on the incident angle would be useful for sunglasses and vehicle or architectural windows, among others. Herein, we realized the production of optical filters, called "louver filters", comprising HAN-type LC film produced using liquid crystalline ink with dichroic dyes. For the formation of the HAN-type LC film, the liquid crystalline ink was aligned on a rubbed polyimide layer and polymerized by UV irradiation. Two kinds of filters are proposed: one is a filter composed of HAN-type LC film and a polarizer, and the other is composed of two HAN-LC films with a half-wave plate between them. The dependence of the asymmetric transmittance on the incident angle was confirmed for these filters. The dependence changed depending on the pretilt angle of the alignment layers. Photographs taken with the optical filters displayed their effectiveness.
Collapse
Affiliation(s)
- Kohki Takatoh
- Department of Electrical Engineering, Faculty of Engineering, Sanyo-Onoda City University, 1-1-1 Daigaku-dori, Sanyo-Onoda 756-0884, Japan
| | - Mika Kobayashi
- Department of Electrical Engineering, Faculty of Engineering, Sanyo-Onoda City University, 1-1-1 Daigaku-dori, Sanyo-Onoda 756-0884, Japan
| | - Masahiro Ito
- Medical Engineering Course, Department of Medical Course, Faculty of Health and Medical Science, Teikyo Heisei University, 2-51-4 Higashi-ikebukuro, Toshima-ku, Tokyo 170-8445, Japan;
| |
Collapse
|
4
|
Li K, Zhang B, Cheng Q, Dai Y, Yu Y. Light-Fueled Synchronization of Two Coupled Liquid Crystal Elastomer Self-Oscillators. Polymers (Basel) 2023; 15:2886. [PMID: 37447528 DOI: 10.3390/polym15132886] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
The synchronization and group behaviors of self-excited coupled oscillators are common in nature and deserve to be explored, for self-excited motions have the advantages of actively collecting energy from the environment, being autonomous, making equipment portable, and so on. Based on light-powered self-excited oscillators composed of liquid crystal elastomer (LCE) bars, the synchronization of two self-excited coupled oscillators is theoretically studied. Numerical calculations show that self-excited oscillations of the system have two synchronization modes, in-phase mode and anti-phase mode, which are mainly determined by their interaction. The time histories of various quantities are calculated to elucidate the mechanism of self-excited oscillation and synchronization. For strong interactions, the system always develops into in-phase synchronization mode, while for weak interaction, the system will evolve into anti-phase synchronization mode. Furthermore, the effects of initial conditions, contraction coefficient, light intensity, and damping coefficient on the two synchronization modes of the self-excited oscillation are investigated extensively. The initial condition generally does not affect the synchronization mode and its amplitude. The amplitude of self-oscillation always increases with increasing contraction coefficient, gravitational acceleration, and light intensity, while it decreases with the increasing damping coefficient. This work will deepen people's understanding of the synchronization behaviors of self-excited coupled oscillators, and the theoretical framework could be extended to scenarios involving large-scale synchronization of the systems with numerous interacting oscillators.
Collapse
Affiliation(s)
- Kai Li
- Department of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Biao Zhang
- Department of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Quanbao Cheng
- Department of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Yuntong Dai
- Department of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| | - Yong Yu
- Department of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China
| |
Collapse
|
5
|
Zhao Y, Li Q, Liu Z, Alsaid Y, Shi P, Khalid Jawed M, He X. Sunlight-powered self-excited oscillators for sustainable autonomous soft robotics. Sci Robot 2023; 8:eadf4753. [PMID: 37075101 DOI: 10.1126/scirobotics.adf4753] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
As the field of soft robotics advances, full autonomy becomes highly sought after, especially if robot motion can be powered by environmental energy. This would present a self-sustained approach in terms of both energy supply and motion control. Now, autonomous movement can be realized by leveraging out-of-equilibrium oscillatory motion of stimuli-responsive polymers under a constant light source. It would be more advantageous if environmental energy could be scavenged to power robots. However, generating oscillation becomes challenging under the limited power density of available environmental energy sources. Here, we developed fully autonomous soft robots with self-sustainability based on self-excited oscillation. Aided by modeling, we have successfully reduced the required input power density to around one-Sun level through a liquid crystal elastomer (LCE)-based bilayer structure. The autonomous motion of the low-intensity LCE/elastomer bilayer oscillator "LiLBot" under low energy supply was achieved by high photothermal conversion, low modulus, and high material responsiveness simultaneously. The LiLBot features tunable peak-to-peak amplitudes from 4 to 72 degrees and frequencies from 0.3 to 11 hertz. The oscillation approach offers a strategy for designing autonomous, untethered, and sustainable small-scale soft robots, such as a sailboat, walker, roller, and synchronized flapping wings.
Collapse
Affiliation(s)
- Yusen Zhao
- Department of Material Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Qiaofeng Li
- Department of Mechanical and Aerospace Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Zixiao Liu
- Department of Material Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Yousif Alsaid
- Department of Material Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Pengju Shi
- Department of Material Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Mohammad Khalid Jawed
- Department of Mechanical and Aerospace Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Ximin He
- Department of Material Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095 USA
- California Nanosystems Institute, Los Angeles, CA 90095, USA
| |
Collapse
|
6
|
Jayoti D, Peeketi AR, Kumbhar PY, Swaminathan N, Annabattula RK. Geometry Controlled Oscillations in Liquid Crystal Polymer Films Triggered by Thermal Feedback. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18362-18371. [PMID: 36975405 DOI: 10.1021/acsami.3c02472] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Light-induced oscillatory behavior of liquid crystal polymer network (LCN) films has been demonstrated by several researchers in the past decade. Similarly, oscillations in LCN films under constant thermal stimulus have been reported recently, although the mechanism and the factors that govern the oscillatory behavior are not well understood. In this work, we study the dynamics of self-sustained oscillations exhibited by LCN films under a constant thermal stimulus through experiments and simulations. Geometrically asymmetric films such as a right triangle and an equilateral triangle are obtained from a twisted nematic square film. A multiphysics computational framework using the finite element method is developed to simulate the oscillatory behavior of the LCN films kept on a hot plate. The framework accounts for a coupling between heat transfer and mechanical deformations during the oscillations. Small temperature fluctuations (≈ 1 °C) coupled with gravity induced torque are shown to drive the oscillatory behavior at a specific plate temperature. We show for the first time that self-sustained oscillations can also be achieved in symmetric shapes, such as square films, by creating a thickness tapering between two opposite edges. The frequency of the oscillations is found to be in the range of 0.5 to 2.5 Hz for different geometries studied. The oscillation temperature depends on the mean thickness, size, and thickness profile of the films. As a possible application, we demonstrate a thermally actuated optical chopper using the oscillatory response of the films.
Collapse
Affiliation(s)
- Divya Jayoti
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Akhil Reddy Peeketi
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pramod Yallappa Kumbhar
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Narasimhan Swaminathan
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ratna Kumar Annabattula
- Center for Soft and Biological Matter, Indian Institute of Technology Madras, Chennai 600036, India
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| |
Collapse
|
7
|
Alipanah Z, Zakerhamidi MS, Movla H, Azizi B, Muševič I, Ranjkesh A. Light-Powered Liquid Crystal Polymer Network Actuator Using TiO 2 Nanoparticles as an Inorganic Ultraviolet-Light Absorber. ACS OMEGA 2023; 8:10555-10564. [PMID: 36969424 PMCID: PMC10034986 DOI: 10.1021/acsomega.3c00417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Recently, the design and fabrication of light-powered actuators have attracted immense attention because of the manufacturing of intelligent soft robots and innovative self-regulating devices. Accordingly, a liquid crystal polymer network (LCN) provides a promising platform due to its reversible and multistimulus-responsive shape-changing behaviors. In particular, doping nanoparticles with exclusive properties into the LCN can produce interesting results. In this work, we investigated a TiO2 nanoparticle-based LCN polymer light-powered actuator. TiO2 nanoparticles as an inorganic ultraviolet (UV)-light absorber can substantially affect the LCN polymer's oscillatory behavior. Our results demonstrate that the oscillation characteristics are directly influenced by the presence of nanoparticles, and we studied the influencing factors. The effectiveness of the elastic modulus, thermomechanical force, and curvature was investigated using different weight percentages of TiO2 nanoparticles. Our results show that, in the presence of TiO2 nanoparticles, the polymer chain order and inter-chain interactions in the polymer matrix as well as the structural deformation of relevant polymer surfaces are changed.
Collapse
Affiliation(s)
- Zhila Alipanah
- Faculty
of Physics, University of Tabriz, Tabriz 5166614761, Iran
| | - Mohammad Sadegh Zakerhamidi
- Faculty
of Physics, University of Tabriz, Tabriz 5166614761, Iran
- Photonics
Center of Excellence, University of Tabriz, Tabriz 5166614761, Iran
| | - Hossein Movla
- Faculty
of Physics, University of Tabriz, Tabriz 5166614761, Iran
| | - Batool Azizi
- Central
laboratory, University of Tabriz, Tabriz 5166614761, Iran
| | - Igor Muševič
- Condensed
Matter Department, J. Stefan Institute, Jamova 39, Ljubljana 1000, Slovenia
| | - Amid Ranjkesh
- Condensed
Matter Department, J. Stefan Institute, Jamova 39, Ljubljana 1000, Slovenia
| |
Collapse
|
8
|
Zhang BY, Luo HN, Zhang W, Liu Y. Research progress in self-oscillating polymer brushes. RSC Adv 2022; 12:1366-1374. [PMID: 35425176 PMCID: PMC8979042 DOI: 10.1039/d1ra07374e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/22/2021] [Indexed: 12/02/2022] Open
Abstract
Polymer brushes possess unique changes in physical and chemical properties when they are exposed to external stimuli and have a wide range of applications. Self-oscillating polymers are anchored on surfaces of certain materials and are coupled with some self-oscillating reactions (with the Belousov–Zhabotinsky (BZ) reaction as an example) to form self-oscillating polymer brushes. As an independent field of stimulus response functional surface research, the development of new intelligent bionic materials has good potential. This article reviews the oscillation mechanisms of self-oscillating polymer brushes and their classifications. First, the oscillation mechanisms of self-oscillating polymer brushes are introduced. Second, the research progress in self-oscillating polymers is discussed in terms of the type of self-oscillation reactions. Finally, possible future developments of self-oscillating polymer brushes are prospected. Polymer brushes possess unique changes in physical and chemical properties when they are exposed to external stimuli and have a wide range of applications.![]()
Collapse
Affiliation(s)
- Bao-Ying Zhang
- School of Chemical Engineering, China University of Mining and Technology Xuzhou Jiangsu 221116 China .,School of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University Zaozhuang Shandong 277160 China
| | - Hai-Nan Luo
- School of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University Zaozhuang Shandong 277160 China
| | - Wei Zhang
- School of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University Zaozhuang Shandong 277160 China
| | - Yang Liu
- School of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University Zaozhuang Shandong 277160 China
| |
Collapse
|
9
|
Vantomme G, Elands LCM, Gelebart AH, Meijer EW, Pogromsky AY, Nijmeijer H, Broer DJ. Coupled liquid crystalline oscillators in Huygens' synchrony. NATURE MATERIALS 2021; 20:1702-1706. [PMID: 33603183 PMCID: PMC7612044 DOI: 10.1038/s41563-021-00931-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 01/15/2021] [Indexed: 05/24/2023]
Abstract
In the flourishing field of soft robotics, strategies to embody communication and collective motion are scarce. Here we report the synchronized oscillations of thin plastic actuators by an approach reminiscent of the synchronized motion of pendula and metronomes. Two liquid crystalline network oscillators fuelled by light influence the movement of one another and display synchronized oscillations in-phase and anti-phase in a steady state. By observing entrainment between the asymmetric oscillators we demonstrate the existence of coupling between the two actuators. We qualitatively explain the origin of the synchronized motion using a theoretical model and numerical simulations, which suggest that the motion can be tuned by the mechanical properties of the coupling joint. We thus anticipate that the complex synchronization phenomena usually observed in rigid systems can also exist in soft polymeric materials. This enables the use of new stimuli, featuring an example of collective motion by photo-actuation.
Collapse
Affiliation(s)
- Ghislaine Vantomme
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands.
- Department of Chemical Engineering and Chemistry, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, Eindhoven, the Netherlands.
| | - Lars C M Elands
- Department of Mechanical Engineering, Dynamics and Control, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Anne Helene Gelebart
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
- Department of Chemical Engineering and Chemistry, Laboratory for Functional Organic Materials and Devices, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - E W Meijer
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
- Department of Chemical Engineering and Chemistry, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Alexander Y Pogromsky
- Department of Mechanical Engineering, Dynamics and Control, Eindhoven University of Technology, Eindhoven, the Netherlands
- Department of Control Systems and Industrial Robotics, Saint-Petersburg National Research University of Information Technologies Mechanics and Optics, Petersburg, Russia
| | - Henk Nijmeijer
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
- Department of Mechanical Engineering, Dynamics and Control, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Dirk J Broer
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands.
- Department of Chemical Engineering and Chemistry, Laboratory for Functional Organic Materials and Devices, Eindhoven University of Technology, Eindhoven, the Netherlands.
| |
Collapse
|
10
|
Perrot A, Moulin E, Giuseppone N. Extraction of mechanical work from stimuli-responsive molecular systems and materials. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2021.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
11
|
Sakaino H, Lamers BAG, Meskers SCJ, Meijer EW, Vantomme G. Photo‐controlled alignment and helical organization in main‐chain liquid crystalline alternating polymers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Hirotoshi Sakaino
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
- Electronic & Imaging Materials Research Laboratories Toray Industries, Inc. Otsu Japan
| | - Brigitte A. G. Lamers
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
| | - Stefan C. J. Meskers
- Institute for Complex Molecular Systems and Molecular Materials and Nanosystems Eindhoven University of Technology Eindhoven The Netherlands
| | - E. W. Meijer
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
| | - Ghislaine Vantomme
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Eindhoven The Netherlands
| |
Collapse
|
12
|
Pang J, Gao C, Shu L, Hu X, Li M. DFT calculations: Bridged-azo working with visible light. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
13
|
Kageyama Y, Ikegami T, Satonaga S, Obara K, Sato H, Takeda S. Light-Driven Flipping of Azobenzene Assemblies-Sparse Crystal Structures and Responsive Behaviour to Polarised Light. Chemistry 2020; 26:10759-10768. [PMID: 32190919 DOI: 10.1002/chem.202000701] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/12/2020] [Indexed: 12/30/2022]
Abstract
For creation of autonomous microrobots, which are able to move under conditions of a constant environment and a constant energy supply, a mechanism for maintenance of mechanical motion with a capacity for self-control is required. This requirement, known as self-organisation, represents the ability of a system to evade equilibrium through formation of a spatio-temporal pattern. Following our previous finding of a self-oscillatory flipping motion of an azobenzene-containing co-crystal, we present here regulation of the flipping motion by a light-receiving sensor molecule in relation to the alignment and role of azobenzene molecules in crystals. In the anisotropic structure, a specific azobenzene molecule acts as a reaction centre for the conversion of light to a mechanical function process, whereas the other molecules act as modulators for spatio-pattern regulation. The present results demonstrate that autonomously drivable molecular materials can exhibit information-responsive, self-sustainable motion by incorporating stimulus-responsive sensors.
Collapse
Affiliation(s)
- Yoshiyuki Kageyama
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Tomonori Ikegami
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-0810, Japan
| | - Shinnosuke Satonaga
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-0810, Japan
| | - Kazuma Obara
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-0810, Japan
| | | | - Sadamu Takeda
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| |
Collapse
|
14
|
Osypova A, Dübner M, Panzarasa G. Oscillating Reactions Meet Polymers at Interfaces. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2957. [PMID: 32630641 PMCID: PMC7372367 DOI: 10.3390/ma13132957] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 11/23/2022]
Abstract
Chemo-mechanical phenomena, including oscillations and peristaltic motions, are widespread in nature-just think of heartbeats-thanks to the ability of living organisms to convert directly chemical energy into mechanical work. Their imitation with artificial systems is still an open challenge. Chemical clocks and oscillators (such as the popular Belousov-Zhabotinsky (BZ) reaction) are reaction networks characterized by the emergence of peculiar spatiotemporal dynamics. Their application to polymers at interfaces (grafted chains, layer-by-layer assemblies, and polymer brushes) offers great opportunities for developing novel smart biomimetic materials. Despite the wide field of potential applications, limited research has been carried out so far. Here, we aim to showcase the state-of-the-art of this fascinating field of investigation, highlighting the potential for future developments and providing a personal outlook.
Collapse
Affiliation(s)
- Alina Osypova
- Innovative Sensor Technology IST AG, Stegrütistrasse 14, 9642 Ebnat-Kappel, Switzerland;
| | - Matthias Dübner
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland;
| | - Guido Panzarasa
- Laboratory of Soft and Living Materials, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| |
Collapse
|
15
|
Lan R, Sun J, Shen C, Huang R, Zhang Z, Zhang L, Wang L, Yang H. Near-Infrared Photodriven Self-Sustained Oscillation of Liquid-Crystalline Network Film with Predesignated Polydopamine Coating. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906319. [PMID: 32080919 DOI: 10.1002/adma.201906319] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/21/2020] [Indexed: 05/27/2023]
Abstract
Movement is one of the vital features of living systems, and remote control of bioinspired soft robotic systems in a precise, contactless and harmless way is extremely desirable but challenging. A near-infrared (NIR) photodriven polymeric oscillator is designed and fabricated by selectively coating a mussel-inspired polydopamine (PDA) polymer layer on the surface of splay-aligned liquid crystalline network (LCN) film. The oscillating motions of the LCN oscillators can be facilely manipulated by tuning light intensity and film thickness. More importantly, the programmability of the PDA coating enables the oscillating behaviors of LCN film to be predesignated and finely adjusted by coating the film with PDA locally and repeatedly. The self-oscillating movement mechanism can be attributed to the temperature oscillation at the PDA-coated LCN film since it is alternatively exposed and sheltered to the NIR-light irradiations. Owing to over 50% NIR irradiation in solar spectrum, PDA-coated film is found to oscillate upon exposure of focused sunlight, presenting great potential in fabrication of solar power generation devices. This provides a versatile strategy to fabricate NIR-light-actuated polymeric oscillators, providing inspirations in the development of biological soft robots and advanced biomimetic devices.
Collapse
Affiliation(s)
- Ruochen Lan
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Jian Sun
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Chen Shen
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Rui Huang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Zhongping Zhang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Lanying Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Ling Wang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Huai Yang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| |
Collapse
|
16
|
Pilz da Cunha M, Ambergen S, Debije MG, Homburg EFGA, den Toonder JMJ, Schenning APHJ. A Soft Transporter Robot Fueled by Light. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902842. [PMID: 32154076 PMCID: PMC7055549 DOI: 10.1002/advs.201902842] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/06/2019] [Indexed: 05/27/2023]
Abstract
Mobile organisms with ability for locomotion and transportation, such as humans and other animals, utilize orchestrated actuation to perform actions. Mimicking these functionalities in synthetic, light-responsive untethered soft-bodied devices remains a challenge. Inspired by multitasking and mobile biological systems, an untethered soft transporter robot with controlled multidirectional locomotion with the ability of picking up, transporting, and delivering cargo driven entirely by blue light is created. The soft robot design is an ensemble of light-responsive liquid crystalline polymers that can harness motion either collectively or individually to obtain a high degree of motion control for the execution of advanced tasks in a dry environment. Through orchestrated motion of the device's "legs", single displacement strides, which exceed 4 mm and can be taken in any direction, allow for locomotion around objects. Untethered cargo transportation is demonstrated by a pickup and release mechanism using the device's "arms". This strategy demonstrates the constructive harnessing of orchestrated motion in assemblies of established actuators, performing complex functions, mimicking constructive behavior seen in nature.
Collapse
Affiliation(s)
- Marina Pilz da Cunha
- Institute for Complex Molecular SystemsEindhoven University of TechnologyDen Dolech 25600 MBEindhovenThe Netherlands
- Laboratory of Stimuli‐Responsive Functional Materials & DevicesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Sebastiaan Ambergen
- Institute for Complex Molecular SystemsEindhoven University of TechnologyDen Dolech 25600 MBEindhovenThe Netherlands
- Department of Mechanical EngineeringEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Michael G. Debije
- Institute for Complex Molecular SystemsEindhoven University of TechnologyDen Dolech 25600 MBEindhovenThe Netherlands
- Laboratory of Stimuli‐Responsive Functional Materials & DevicesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Erik F. G. A. Homburg
- Institute for Complex Molecular SystemsEindhoven University of TechnologyDen Dolech 25600 MBEindhovenThe Netherlands
- Department of Mechanical EngineeringEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Jaap M. J. den Toonder
- Institute for Complex Molecular SystemsEindhoven University of TechnologyDen Dolech 25600 MBEindhovenThe Netherlands
- Department of Mechanical EngineeringEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Albert P. H. J. Schenning
- Institute for Complex Molecular SystemsEindhoven University of TechnologyDen Dolech 25600 MBEindhovenThe Netherlands
- Laboratory of Stimuli‐Responsive Functional Materials & DevicesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| |
Collapse
|
17
|
Rastogi P, Njuguna J, Kandasubramanian B. Exploration of elastomeric and polymeric liquid crystals with photothermal actuation: A review. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109287] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
18
|
Zhao Y, Xuan C, Qian X, Alsaid Y, Hua M, Jin L, He X. Soft phototactic swimmer based on self-sustained hydrogel oscillator. Sci Robot 2019; 4:4/33/eaax7112. [PMID: 33137784 DOI: 10.1126/scirobotics.aax7112] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/29/2019] [Indexed: 01/27/2023]
Abstract
Oscillations are widely found in living organisms to generate propulsion-based locomotion often driven by constant ambient conditions, such as phototactic movements. Such environment-powered and environment-directed locomotions may advance fully autonomous remotely steered robots. However, most man-made oscillations require nonconstant energy input and cannot perform environment-dictated movement. Here, we report a self-sustained soft oscillator that exhibits perpetual and untethered locomotion as a phototactic soft swimming robot, remotely fueled and steered by constant visible light. This particular out-of-equilibrium actuation arises from a self-shadowing-enabled negative feedback loop inherent in the dynamic light-material interactions, promoted by the fast and substantial volume change of the photoresponsive hydrogel. Our analytical model and governing equation unveil the oscillation mechanism and design principle with key parameters identified to tune the dynamics. On this autonomous oscillator platform, we establish a broadly applicable principle for converting a continuous input into a discontinuous output. The modular design can be customized to accommodate various forms of input energy and to generate diverse oscillatory behaviors. The hydrogel oscillator showcases agile life-like omnidirectional motion in the entire three-dimensional space with near-infinite degrees of freedom. The large force generated by the powerful and long-lasting oscillation can sufficiently overcome water damping and effectively self-propel away from a light source. Such a hydrogel oscillator-based all-soft swimming robot, named OsciBot, demonstrated high-speed and controllable phototactic locomotion. This autonomous robot is battery free, deployable, scalable, and integratable. Artificial phototaxis opens broad opportunities in maneuverable marine automated systems, miniaturized transportation, and solar sails.
Collapse
Affiliation(s)
- Yusen Zhao
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Chen Xuan
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xiaoshi Qian
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yousif Alsaid
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mutian Hua
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Lihua Jin
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ximin He
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA. .,California NanoSystems Institute, Los Angeles, CA 90095, USA
| |
Collapse
|
19
|
Kageyama Y. Light‐Powered Self‐Sustainable Macroscopic Motion for the Active Locomotion of Materials. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yoshiyuki Kageyama
- Department of ChemistryFaculty of Science, Hokkaido University Kita-10 Nishi-8, Kita-ku Sapporo 060-0810 JAPAN
| |
Collapse
|