1
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Xu LF, Xu ZW, Lin JP, Wang LQ. Optimizing Photovoltaic Performance by Kinetic Quenching of Layered Heterojunctions. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2642-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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de Oliveira FC, Maia JM, Tavares FW. Asphaltenes at the water-oil interface using DPD/COSMO-SAC. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Pan L, Wang F, Cheng Y, Leow WR, Zhang YW, Wang M, Cai P, Ji B, Li D, Chen X. A supertough electro-tendon based on spider silk composites. Nat Commun 2020; 11:1332. [PMID: 32165612 PMCID: PMC7067870 DOI: 10.1038/s41467-020-14988-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 02/11/2020] [Indexed: 11/10/2022] Open
Abstract
Compared to transmission systems based on shafts and gears, tendon-driven systems offer a simpler and more dexterous way to transmit actuation force in robotic hands. However, current tendon fibers have low toughness and suffer from large friction, limiting the further development of tendon-driven robotic hands. Here, we report a super tough electro-tendon based on spider silk which has a toughness of 420 MJ/m3 and conductivity of 1,077 S/cm. The electro-tendon, mechanically toughened by single-wall carbon nanotubes (SWCNTs) and electrically enhanced by PEDOT:PSS, can withstand more than 40,000 bending-stretching cycles without changes in conductivity. Because the electro-tendon can simultaneously transmit signals and force from the sensing and actuating systems, we use it to replace the single functional tendon in humanoid robotic hand to perform grasping functions without additional wiring and circuit components. This material is expected to pave the way for the development of robots and various applications in advanced manufacturing and engineering.
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Affiliation(s)
- Liang Pan
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Fan Wang
- Biomechanics and Biomaterials Laboratory, Department of Applied Mechanics, Beijing Institute of Technology, Beijing, 100081, China
| | - Yuan Cheng
- Institute of High Performance Computing, Agency for Science Technology and Research (A*STAR), 1 Fusionopolis Way, Singapore, 138632, Singapore
| | - Wan Ru Leow
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yong-Wei Zhang
- Institute of High Performance Computing, Agency for Science Technology and Research (A*STAR), 1 Fusionopolis Way, Singapore, 138632, Singapore
| | - Ming Wang
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Pingqiang Cai
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Baohua Ji
- Institute of Applied Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Dechang Li
- Institute of Applied Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China.
| | - Xiaodong Chen
- Innovative Centre for Flexible Devices (iFLEX), School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
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Wang J, Cao C, Chen X, Ren S, Chen Y, Yu D, Chen X. Orientation and Dispersion Evolution of Carbon Nanotubes in Ultra High Molecular Weight Polyethylene Composites under Extensional-Shear Coupled Flow: A Dissipative Particle Dynamics Study. Polymers (Basel) 2019; 11:polym11010154. [PMID: 30960138 PMCID: PMC6401708 DOI: 10.3390/polym11010154] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 11/16/2022] Open
Abstract
The property of carbon nanotubes (CNTs)-based composites are significantly dependent on the orientation and dispersion evolution of CNTs in the polymer matrix. In this work, the dissipative particle dynamics (DPD) simulations are employed to discover the orientation and dispersion evolution of CNTs in ultra⁻high molecular weight polyethylene (UHMWPE) under extensional⁻shear coupled flow conditions for the first time. In this paper, we investigate the roles of the increasing extensional-shear coupled rate in morphology of CNTs/UHMWPE composites by varying CNTs concentration and observe that the system under consideration lies in the same evolution morphologies. When comparing our results for various morphologies, we notice that the orientation is affected more significantly by changing the extensional-shear coupled rates. A good alignment appears with an increase of extensional-shear coupled rates, which transform it into ordered morphology. In addition, a higher extensional-shear coupled rate does not necessarily contribute to better dispersion even though CNTs concentration varies, as shown by the mean square displacement (MSD) and the relative concentration distribution functions of CNTs in CNTs/UHMWPE composites.
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Affiliation(s)
- Junxia Wang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education and Key Laboratory of High Performance Polymer⁻based Composites of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Changlin Cao
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education and Key Laboratory of High Performance Polymer⁻based Composites of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xiaochuan Chen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education and Key Laboratory of High Performance Polymer⁻based Composites of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Shijie Ren
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Yu Chen
- Beijing Huateng Hightech Co.Ltd, Beijing 10084, China.
| | - Dingshan Yu
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education and Key Laboratory of High Performance Polymer⁻based Composites of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xudong Chen
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education and Key Laboratory of High Performance Polymer⁻based Composites of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
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Seaton MA. DL_MESO_DPD: development and use of mesoscale modelling software. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1524143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Gooneie A, Hufenus R. Hybrid Carbon Nanoparticles in Polymer Matrix for Efficient Connected Networks: Self-Assembly and Continuous Pathways. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00585] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Ali Gooneie
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Rudolf Hufenus
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
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Ketkaew R, Tantirungrotechai Y. Dissipative Particle Dynamics Study of SWCNT Reinforced Natural Rubber Composite System: An Important Role of Self-Avoiding Model on Mechanical Properties. MACROMOL THEOR SIMUL 2018. [DOI: 10.1002/mats.201700093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rangsiman Ketkaew
- Computational Chemistry Research Unit; Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathum Thani 12120 Thailand
| | - Yuthana Tantirungrotechai
- Computational Chemistry Research Unit; Department of Chemistry; Faculty of Science and Technology; Thammasat University; Pathum Thani 12120 Thailand
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Al-Qattan MN, Deb PK, Tekade RK. Molecular dynamics simulation strategies for designing carbon-nanotube-based targeted drug delivery. Drug Discov Today 2017; 23:235-250. [PMID: 29031623 DOI: 10.1016/j.drudis.2017.10.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/05/2017] [Accepted: 10/05/2017] [Indexed: 01/05/2023]
Abstract
The carbon nanotube (CNT)-based target-specific delivery of drugs, or other molecular cargo, has emerged as one of the most promising biomedical applications of nanotechnology. To achieve efficient CNT-based drug delivery, the interactions between the drug, CNT and biomolecular target need to be properly optimized. Recent advances in the computer-aided molecular design tools, in particular molecular dynamics (MD) simulation studies, offer an appropriate low-cost approach for such optimization. This review highlights the various potential MD approaches for the simulation of CNT interactions with cell membranes while emphasizing various methods of cellular internalization and toxicities of CNTs to build new strategies for designing rational CNT-based targeted drug delivery to circumvent the limitations associated with the various clinically available nonspecific therapeutic agents.
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Affiliation(s)
- Mohammed N Al-Qattan
- Faculty of Pharmacy, Philadelphia University-Jordan, P.O. Box (1), Philadelphia University (19392), Jordan
| | - Pran Kishore Deb
- Faculty of Pharmacy, Philadelphia University-Jordan, P.O. Box (1), Philadelphia University (19392), Jordan.
| | - Rakesh K Tekade
- National Institute of Pharmaceutical Education and Research (NIPER) Ahmedabad, (An Institute of National Importance, Government of India), Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Palaj, Opposite Air Force Station, Gandhinagar, Gujarat 382355, India
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Gooneie A, Holzer C. Reinforced local heterogeneities in interfacial tension distribution in polymer blends by incorporating carbon nanotubes. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Gooneie A, Sapkota J, Shirole A, Holzer C. Length controlled kinetics of self-assembly of bidisperse nanotubes/nanorods in polymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Park CH, Tocci E, Fontananova E, Bahattab MA, Aljlil SA, Drioli E. Mixed matrix membranes containing functionalized multiwalled carbon nanotubes: Mesoscale simulation and experimental approach for optimizing dispersion. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.04.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Choudhury CK, Carbone P, Roy S. Scalability of Coarse-Grained Potentials Generated from Iterative Boltzmann Inversion for Polymers: Case Study on Polycarbonates. MACROMOL THEOR SIMUL 2016. [DOI: 10.1002/mats.201500079] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Paola Carbone
- School of Chemical Engineering and Analytical Science; The University of Manchester; Manchester UK
| | - Sudip Roy
- Physical Chemistry Division; National Chemical Laboratory; Pune India
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Karatrantos A, Clarke N, Kröger M. Modeling of Polymer Structure and Conformations in Polymer Nanocomposites from Atomistic to Mesoscale: A Review. POLYM REV 2016. [DOI: 10.1080/15583724.2015.1090450] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Kumar M, Patil NG, Choudhury CK, Roy S, Ambade AV, Kumaraswamy G. Compact polar moieties induce lipid-water systems to form discontinuous reverse micellar phase. SOFT MATTER 2015; 11:5417-5424. [PMID: 26023767 DOI: 10.1039/c5sm00854a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The role of molecular interactions in governing lipid mesophase organization is of fundamental interest and has technological implications. Herein, we describe an unusual pathway for monoolein/water reorganization from a bicontinuous mesophase to a discontinuous reverse micellar assembly, directed by the inclusion of polar macromolecules. This pathway is very different from those reported earlier, wherein the Fd3m phase formed only upon addition of apolar oils. Experiments and molecular dynamics simulations indicate that hydrophilic ternary additives capable of inducing discontinuous phase formation must (i) interact strongly with the monoolein head group and (ii) have a compact molecular architecture. We present a detailed investigation that contrasts a monoolein-water system containing polyamidoamine (PAMAM) dendrons with one containing their linear analogs. The Fd3m phase forms only on the addition of PAMAM dendrons but not their linear analogs. Thus, the dendritic architecture of PAMAM plays an important role in determining lipid mesophase behavior. Both dendrons and their linear analogs interact strongly with monoolein through their amine groups. However, while linear polymers adsorb and spread on monoolein, dendrons form aggregates that interact with the lipid. Dendrons induce formation of an intermediate reverse hexagonal phase, which subsequently restructures into the Fd3m phase. Finally, we demonstrate that other additives with compact structures that are known to interact with monoolein, such as branched polyethylenimine and polyhedral silsesquioxane cages, also induce the formation of the Fd3m phase.
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Affiliation(s)
- Manoj Kumar
- Complex Fluids and Polymer Engineering, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India.
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Chakraborty S, Roy S. Structure of Nanorod Assembly in the Gyroid Phase of Diblock Copolymer. J Phys Chem B 2015; 119:6803-12. [DOI: 10.1021/acs.jpcb.5b01338] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Souvik Chakraborty
- Physical Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Sudip Roy
- Physical Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
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