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Matis BR, Liskey SW, Gangemi NT, Edmunds AD, Wilson WB, Houston BH, Baldwin JW, Photiadis DM. Unconventional acoustic wave propagation transitions induced by resonant scatterers in the high-density limit. Sci Rep 2024; 14:14872. [PMID: 38937552 DOI: 10.1038/s41598-024-63910-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 06/03/2024] [Indexed: 06/29/2024] Open
Abstract
Experiments on ultrasound propagation through a gel doped with resonant encapsulated microbubbles provided evidence for a discontinuous transition between wave propagation regimes at a critical excitation frequency. Such behavior is unlike that observed for soft materials doped with non-resonant air or through liquid foams, and disagrees with a simple mixture model for the effective sound speed. Here, we study the discontinuous transition by measuring the transition as a function of encapsulated microbubble volume fraction. The results show the transition always occurs in the strong-scattering limit (l/λ < 1, l and λ are the mean free path and wavelength, respectively), that at the critical frequency the effective phase velocity changes discontinuously to a constant value with increasing microbubble volume fraction, and the measured critical frequency shows a power law dependence on microbubble volume fraction. The results cannot be explained by multiple scattering theory, viscous effects, mode decoupling, or a critical density of states. It is hypothesized the transition depends upon the microbubble on-resonance effective properties, and we discuss the results within the context of percolation theory. The results shed light on the discontinuous transition's physics, and suggest soft materials can be engineered in this manner to achieve a broad range of physical properties with potential application in ultrasonic actuators and switches.
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Affiliation(s)
- Bernard R Matis
- Naval Research Laboratory, Code 7130, Washington, DC, 20375, USA.
| | - Steven W Liskey
- Naval Research Laboratory, Code 7130, Washington, DC, 20375, USA
| | | | - Aaron D Edmunds
- Naval Research Laboratory, Code 7130, Washington, DC, 20375, USA
| | - William B Wilson
- Naval Research Laboratory, Code 7130, Washington, DC, 20375, USA
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2
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Delory A, Kiefer DA, Lanoy M, Eddi A, Prada C, Lemoult F. Viscoelastic dynamics of a soft strip subject to a large deformation. SOFT MATTER 2024; 20:1983-1995. [PMID: 38284472 DOI: 10.1039/d3sm01485a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
To produce sounds, we adjust the tension of our vocal folds to shape their properties and control the pitch. This efficient mechanism offers inspiration for designing reconfigurable materials and adaptable soft robots. However, understanding how flexible structures respond to a significant static strain is not straightforward. This complexity also limits the precision of medical imaging when applied to tensioned organs like muscles, tendons, ligaments and blood vessels among others. In this article, we experimentally and theoretically explore the dynamics of a soft strip subject to a substantial static extension, up to 180%. Our observations reveal a few intriguing effects, such as the resilience of certain vibrational modes to a static deformation. These observations are supported by a model based on the incremental displacement theory. This has promising practical implications for characterizing soft materials but also for scenarios where external actions can be used to tune properties.
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Affiliation(s)
- Alexandre Delory
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 75005 Paris, France.
- Physique et Mécanique des Milieux Hétérogènes, CNRS, ESPCI Paris, Université PSL, Sorbonne Université, Université de Paris Cité, F-75005, Paris, France
| | - Daniel A Kiefer
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 75005 Paris, France.
| | - Maxime Lanoy
- Laboratoire d'Acoustique de l'Université du Mans (LAUM), UMR 6613, Institut d'Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université, 72085 Le Mans, France
| | - Antonin Eddi
- Physique et Mécanique des Milieux Hétérogènes, CNRS, ESPCI Paris, Université PSL, Sorbonne Université, Université de Paris Cité, F-75005, Paris, France
| | - Claire Prada
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 75005 Paris, France.
| | - Fabrice Lemoult
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 75005 Paris, France.
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3
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Myung N, Kang HW. Local dose-dense chemotherapy for triple-negative breast cancer via minimally invasive implantation of 3D printed devices. Asian J Pharm Sci 2024; 19:100884. [PMID: 38357526 PMCID: PMC10861843 DOI: 10.1016/j.ajps.2024.100884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/18/2023] [Accepted: 11/18/2023] [Indexed: 02/16/2024] Open
Abstract
Dose-dense chemotherapy is the preferred first-line therapy for triple-negative breast cancer (TNBC), a highly aggressive disease with a poor prognosis. This treatment uses the same drug doses as conventional chemotherapy but with shorter dosing intervals, allowing for promising clinical outcomes with intensive treatment. However, the frequent systemic administration used for this treatment results in systemic toxicity and low patient compliance, limiting therapeutic efficacy and clinical benefit. Here, we report local dose-dense chemotherapy to treat TNBC by implanting 3D printed devices with time-programmed pulsatile release profiles. The implantable device can control the time between drug releases based on its internal microstructure design, which can be used to control dose density. The device is made of biodegradable materials for clinical convenience and designed for minimally invasive implantation via a trocar. Dose density variation of local chemotherapy using programmable release enhances anti-cancer effects in vitro and in vivo. Under the same dose density conditions, device-based chemotherapy shows a higher anti-cancer effect and less toxic response than intratumoral injection. We demonstrate local chemotherapy utilizing the implantable device that simulates the drug dose, number of releases, and treatment duration of the dose-dense AC (doxorubicin and cyclophosphamide) regimen preferred for TNBC treatment. Dose density modulation inhibits tumor growth, metastasis, and the expression of drug resistance-related proteins, including p-glycoprotein and breast cancer resistance protein. To the best of our knowledge, local dose-dense chemotherapy has not been reported, and our strategy can be expected to be utilized as a novel alternative to conventional therapies and improve anti-cancer efficiency.
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Affiliation(s)
- Noehyun Myung
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun 44919, South Korea
| | - Hyun-Wook Kang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun 44919, South Korea
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4
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Wang S, Zhong H, Wang Z, Lv H, Jiang J, Pu J. Aldehyde modified nanocellulose-based fluorescent hydrogel toward multistage data security encryption. Int J Biol Macromol 2024; 256:128359. [PMID: 38029907 DOI: 10.1016/j.ijbiomac.2023.128359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023]
Abstract
In view of the insecurity of encode information storage based on fluorescence switch single-stage encryption, a fluorescent hydrogel for multistage data security encryption were proposed, named as polyvinyl alcohol/dialdehyde cellulose nanofibrils/carbon quantum dots hydrogel. Herein, the interpenetrating network was formed by chemically crosslinking between polyvinyl alcohol (PVA) and dialdehyde cellulose nanofibrils (DACNF). Additionally, nitrogen-doped carbon quantum dots (CDs) synthesized by one-step hydrothermal method were introduced into the above hydrogel system by hydrogen bonds. The resultant fluorescent hydrogels possessed high stretchability up to 530 %, good strength of 0.96 MPa, Fe3+-responsive fluorescence quenching, fluorescence recovery triggered by ascorbic acid and borax-triggered shape memory. Moreover, various complex 3D hydrogel geometries were fabricated by folding/assembling 2D fluorescent hydrogel sheets, extending data encryption capability from 2D plane to 3D space. More remarkably, the 3D data encryption-erasing process of fluorescent hydrogel was realized by the strategy of alternating treatment of Fe3+ solution and ascorbic acid solution. This work provided a facile and general strategy for constructing high security important information encryption and protection.
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Affiliation(s)
- Sijie Wang
- Academy of Advanced Carbon Conversion Technology, Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Huaqiao University, Xiamen 361021, China; Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Han Zhong
- Academy of Advanced Carbon Conversion Technology, Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Huaqiao University, Xiamen 361021, China
| | - Zhiguo Wang
- Academy of Advanced Carbon Conversion Technology, Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Huaqiao University, Xiamen 361021, China
| | - Haifeng Lv
- Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Jianchun Jiang
- Academy of Advanced Carbon Conversion Technology, Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion, Huaqiao University, Xiamen 361021, China.
| | - Junwen Pu
- Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.
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5
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Zhang Y, Lee G, Li S, Hu Z, Zhao K, Rogers JA. Advances in Bioresorbable Materials and Electronics. Chem Rev 2023; 123:11722-11773. [PMID: 37729090 DOI: 10.1021/acs.chemrev.3c00408] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Transient electronic systems represent an emerging class of technology that is defined by an ability to fully or partially dissolve, disintegrate, or otherwise disappear at controlled rates or triggered times through engineered chemical or physical processes after a required period of operation. This review highlights recent advances in materials chemistry that serve as the foundations for a subclass of transient electronics, bioresorbable electronics, that is characterized by an ability to resorb (or, equivalently, to absorb) in a biological environment. The primary use cases are in systems designed to insert into the human body, to provide sensing and/or therapeutic functions for timeframes aligned with natural biological processes. Mechanisms of bioresorption then harmlessly eliminate the devices, and their associated load on and risk to the patient, without the need of secondary removal surgeries. The core content focuses on the chemistry of the enabling electronic materials, spanning organic and inorganic compounds to hybrids and composites, along with their mechanisms of chemical reaction in biological environments. Following discussions highlight the use of these materials in bioresorbable electronic components, sensors, power supplies, and in integrated diagnostic and therapeutic systems formed using specialized methods for fabrication and assembly. A concluding section summarizes opportunities for future research.
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Affiliation(s)
- Yamin Zhang
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, Illinois 60208, United States
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois 60208, United States
| | - Geumbee Lee
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, Illinois 60208, United States
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois 60208, United States
| | - Shuo Li
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, Illinois 60208, United States
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois 60208, United States
| | - Ziying Hu
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, Illinois 60208, United States
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois 60208, United States
| | - Kaiyu Zhao
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - John A Rogers
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, Illinois 60208, United States
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Department of Mechanical Engineering, Biomedical Engineering, Chemistry, Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208, United States
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6
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ElDiwiny M, Terryn S, Verbruggen S, Vanderborght B. Nonlinear Multimaterial Architecture for Greater Soft Material's Toughness and Delaying Damage Propagation. Soft Robot 2023; 10:959-971. [PMID: 37172281 DOI: 10.1089/soro.2021.0205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023] Open
Abstract
Designing soft robots that have greater toughness and better resistance to damage propagation while at the same time retaining their properties of compliance is fundamentally important for soft robotics applications. This study's main contribution is proposing a framework for nonlinear multimaterial architectural design of soft structures to increase their toughness and delay damage propagation. What are the limits when combining significantly different materials in one structure that will delay crack propagation while significantly maintaining postdamage toughness? Through this study, we observed that there is a very dynamic interplay when combining significantly different materials in one structure; this interplay could weaken or strengthen the multimaterial structure's toughness. In biological evolutionary terms, the Pangolin, Seashell, and Arapaima have found their answer for deflecting the crack and maintaining strength in their bodies. How does nature put these multimaterial structures together? Our research led us to find that the multimaterial toughness limits depend largely on the following parameters: components' relative morphology, architecture, spatial distribution, surface areas, and Young's Modulus. We found that a linear geometry, when it comes to morphology and/or architecture relative to surface area in multimaterial design, significantly reduces total toughness and fails to delay crack propagation. In contrast, incorporating geometric nonlinearities in both morphology and architecture significantly maintains higher total toughness even after damage, and significantly delays crack propagation. We believe that this study can open the door to further research and ultimately to promising and wide applications in soft robotics.
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Affiliation(s)
- Marwa ElDiwiny
- Brubotics, Vrije Universiteit Brussel (VUB) and Imec, Brussels, Belgium
| | - Seppe Terryn
- Brubotics, Vrije Universiteit Brussel (VUB) and Imec, Brussels, Belgium
- Physical Chemistry and Polymer Science (FYSC), Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Svetlana Verbruggen
- Department of Mechanics of Materials and Constructions, Vrije Universiteit Brussel (VUB), Brussel, Belgium
| | - Bram Vanderborght
- Brubotics, Vrije Universiteit Brussel (VUB) and Imec, Brussels, Belgium
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7
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Hu L, Chee PL, Sugiarto S, Yu Y, Shi C, Yan R, Yao Z, Shi X, Zhi J, Kai D, Yu HD, Huang W. Hydrogel-Based Flexible Electronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2205326. [PMID: 36037508 DOI: 10.1002/adma.202205326] [Citation(s) in RCA: 79] [Impact Index Per Article: 79.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Flexible electronics is an emerging field of research involving multiple disciplines, which include but not limited to physics, chemistry, materials science, electronic engineering, and biology. However, the broad applications of flexible electronics are still restricted due to several limitations, including high Young's modulus, poor biocompatibility, and poor responsiveness. Innovative materials aiming for overcoming these drawbacks and boost its practical application is highly desirable. Hydrogel is a class of 3D crosslinked hydrated polymer networks, and its exceptional material properties render it as a promising candidate for the next generation of flexible electronics. Here, the latest methods of synthesizing advanced functional hydrogels and the state-of-art applications of hydrogel-based flexible electronics in various fields are reviewed. More importantly, the correlation between properties of the hydrogel and device performance is discussed here, to have better understanding of the development of flexible electronics by using environmentally responsive hydrogels. Last, perspectives on the current challenges and future directions in the development of hydrogel-based multifunctional flexible electronics are provided.
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Affiliation(s)
- Lixuan Hu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Pei Lin Chee
- Institute of Materials Research and Engineering (IMRE), A∗STAR, 2 Fusionopolis Way, Innovis, No. 08-03, Singapore, 138634, Singapore
| | - Sigit Sugiarto
- Institute of Materials Research and Engineering (IMRE), A∗STAR, 2 Fusionopolis Way, Innovis, No. 08-03, Singapore, 138634, Singapore
| | - Yong Yu
- Institute of Materials Research and Engineering (IMRE), A∗STAR, 2 Fusionopolis Way, Innovis, No. 08-03, Singapore, 138634, Singapore
| | - Chuanqian Shi
- School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, 200092, P. R. China
| | - Ren Yan
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Zhuoqi Yao
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Xuewen Shi
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Jiacai Zhi
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Dan Kai
- Institute of Materials Research and Engineering (IMRE), A∗STAR, 2 Fusionopolis Way, Innovis, No. 08-03, Singapore, 138634, Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), A∗STAR, 2 Fusionopolis Way, Innovis, No. 08-03, Singapore, 138634, Singapore
| | - Hai-Dong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, P. R. China
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8
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Zhang Y, Liu F, Zhang Y, Wang J, D’Andrea D, Walters JB, Li S, Yoon HJ, Wu M, Li S, Hu Z, Wang T, Choi J, Bailey K, Dempsey E, Zhao K, Lantsova A, Bouricha Y, Huang I, Guo H, Ni X, Wu Y, Lee G, Jiang F, Huang Y, Franz CK, Rogers JA. Self-powered, light-controlled, bioresorbable platforms for programmed drug delivery. Proc Natl Acad Sci U S A 2023; 120:e2217734120. [PMID: 36888661 PMCID: PMC10089205 DOI: 10.1073/pnas.2217734120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/06/2023] [Indexed: 03/09/2023] Open
Abstract
Degradable polymer matrices and porous scaffolds provide powerful mechanisms for passive, sustained release of drugs relevant to the treatment of a broad range of diseases and conditions. Growing interest is in active control of pharmacokinetics tailored to the needs of the patient via programmable engineering platforms that include power sources, delivery mechanisms, communication hardware, and associated electronics, most typically in forms that require surgical extraction after a period of use. Here we report a light-controlled, self-powered technology that bypasses key disadvantages of these systems, in an overall design that is bioresorbable. Programmability relies on the use of an external light source to illuminate an implanted, wavelength-sensitive phototransistor to trigger a short circuit in an electrochemical cell structure that includes a metal gate valve as its anode. Consequent electrochemical corrosion eliminates the gate, thereby opening an underlying reservoir to release a dose of drugs by passive diffusion into surrounding tissue. A wavelength-division multiplexing strategy allows release to be programmed from any one or any arbitrary combination of a collection of reservoirs built into an integrated device. Studies of various bioresorbable electrode materials define the key considerations and guide optimized choices in designs. In vivo demonstrations of programmed release of lidocaine adjacent the sciatic nerves in rat models illustrate the functionality in the context of pain management, an essential aspect of patient care that could benefit from the results presented here.
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Affiliation(s)
- Yamin Zhang
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Fei Liu
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
| | - Yuhe Zhang
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Jin Wang
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
| | - Dominic D’Andrea
- Regenerative Neurorehabilitation Laboratory, Shirley Ryan Ability Lab, Chicago, IL60611
| | - Jordan B. Walters
- Regenerative Neurorehabilitation Laboratory, Shirley Ryan Ability Lab, Chicago, IL60611
| | - Shupeng Li
- Department of Mechanical Engineering, Northwestern University, Evanston, IL60208
| | - Hong-Joon Yoon
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Electronic Engineering, Gachon University, Seongnam-si, Gyeonggi-do13120, Republic of Korea
| | - Mingzheng Wu
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Neurobiology, Northwestern University, Evanston, IL60208
| | - Shuo Li
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Ziying Hu
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Tong Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL60208
| | - Junhwan Choi
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Chemical Engineering, Dankook University, Yongin16890, Republic of Korea
| | | | - Elizabeth Dempsey
- Developmental Therapeutics Core, Northwestern University, Evanston, IL60208
| | - Kaiyu Zhao
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
| | - Anastasia Lantsova
- Department of Biomedical Engineering, Northwestern University, Evanston, IL60208
| | - Yasmine Bouricha
- Regenerative Neurorehabilitation Laboratory, Shirley Ryan Ability Lab, Chicago, IL60611
| | - Ivy Huang
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
| | - Hexia Guo
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
| | - Xinchen Ni
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Yunyun Wu
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Geumbee Lee
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
| | - Fuchang Jiang
- Department of Biomedical Engineering, Northwestern University, Evanston, IL60208
| | - Yonggang Huang
- Department of Mechanical Engineering, Northwestern University, Evanston, IL60208
| | - Colin K. Franz
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Regenerative Neurorehabilitation Laboratory, Shirley Ryan Ability Lab, Chicago, IL60611
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
- The Ken and Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
| | - John A. Rogers
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL60208
- Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, IL60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
- Department of Mechanical Engineering, Northwestern University, Evanston, IL60208
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
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9
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Controlled 5‐FU Release from P(NIPAM‐co‐VIm)‐g‐PEG Dual Responsive Hydrogels. ChemistrySelect 2023. [DOI: 10.1002/slct.202203522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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10
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Treherne JM, Miller AF. Novel hydrogels: are they poised to transform 3D cell-based assay systems in early drug discovery? Expert Opin Drug Discov 2023; 18:335-346. [PMID: 36722285 DOI: 10.1080/17460441.2023.2175813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Success in drug discovery remains unpredictable. However, more predictive and relevant disease models are becoming pivotal to demonstrating the clinical benefits of new drugs earlier in the lengthy drug discovery process. Novel hydrogel scaffolds are being developed to transform the relevance of such 3D cell-based in vitro assay systems. AREAS COVERED Most traditional hydrogels are still of unknown composition and suffer significant batch-to-batch variations, which lead to technical constraints. This article looks at how a new generation of novel synthetic hydrogels that are based on self-assembling peptides are poised to transform 3D cell-based assay systems by improving their relevance, reproducibility and scalability. EXPERT OPINION The emerging advantages of using these novel hydrogels for human 3D screening assays should enable the discovery of more cost-effective drugs, leading to improved patient benefits. Such a disruptive change could also reduce the considerable time lag from obtaining in vitro assay data to initiating clinical trials. There is now a sufficient body of data available in the literature to enable this ambition to become a reality by significantly improving the predictive validity of 3D cell-based assays in early drug discovery. Novel hydrogels are key to unlocking the full potential of these assay systems.
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Affiliation(s)
- J Mark Treherne
- Talisman Therapeutics Ltd, Jonas Webb Building and Cell Guidance Sysyems Ltd, Babraham Research Campus, Cambridge, UK
| | - Aline F Miller
- Manchester Institute of Biotechnology, School of Engineering, The University of Manchester, Oxford Road, Manchester, UK
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11
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Zhang L, Yan H, Zhou J, Zhao Z, Huang J, Chen L, Ru Y, Liu M. High-Performance Organohydrogel Artificial Muscle with Compartmentalized Anisotropic Actuation Under Microdomain Confinement. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2202193. [PMID: 36543760 DOI: 10.1002/adma.202202193] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Current hydrogel actuators mostly suffer from weak actuation strength and low responsive speed owing to their solvent diffusion-induced volume change mechanism. Here a skeletal muscle-inspired organohydrogel actuator is reported in which solvents are confined in hydrophobic microdomains. Organohydrogel actuator is driven by compartmentalized directional network deformation instead of volume change, avoiding the limitations that originate from solvent diffusion. Organohydrogel actuator has an actuation frequency of 0.11 Hz, 110 times that of traditional solvent diffusion-driven hydrogel actuators (<10-3 Hz), and can lift more than 85 times their own weight. This design achieves the combination of high responsive speed, high actuation strength, and large material size, proposing a strategy to fabricate hydrogel actuators comparable with skeletal muscle performance.
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Affiliation(s)
- Longhao Zhang
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Hao Yan
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - JiaJia Zhou
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Ziguang Zhao
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Jin Huang
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Lie Chen
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Yunfei Ru
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Mingjie Liu
- Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
- International Research Institute for Multidisciplinary Science, Beihang University, Beijing, 100191, P. R. China
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12
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Zhao H, Pan S, Natalia A, Wu X, Ong CAJ, Teo MCC, So JBY, Shao H. A hydrogel-based mechanical metamaterial for the interferometric profiling of extracellular vesicles in patient samples. Nat Biomed Eng 2023; 7:135-148. [PMID: 36303008 DOI: 10.1038/s41551-022-00954-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 09/15/2022] [Indexed: 11/09/2022]
Abstract
The utility of mechanical metamaterials for biomedical applications has seldom been explored. Here we show that a metamaterial that is mechanically responsive to antibody-mediated biorecognition can serve as an optical interferometric mask to molecularly profile extracellular vesicles in ascites fluid from patients with cancer. The metamaterial consists of a hydrogel responsive to temperature and redox activity functionalized with antibodies to surface biomarkers on extracellular vesicles, and is patterned into micrometric squares on a gold-coated glass substrate. Through plasmonic heating, the metamaterial is maintained in a transition state between a relaxed form and a buckled state. Binding of extracellular vesicles from the patient samples to the antibodies on the hydrogel causes it to undergo crosslinking, induced by free radicals generated via the activity of horseradish peroxidase conjugated to the antibodies. Hydrogel crosslinking causes the metamaterial to undergo fast chiral re-organization, inducing amplified changes in its mechanical deformation and diffraction patterns, which are detectable by a smartphone camera. The mechanical metamaterial may find broad utility in the sensitive optical immunodetection of biomolecules.
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Affiliation(s)
- Haitao Zhao
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, Singapore
| | - Sijun Pan
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, Singapore
| | - Auginia Natalia
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, Singapore.,Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore
| | - Xingjie Wu
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, Singapore
| | - Chin-Ann J Ong
- Division of Surgical Oncology, National Cancer Centre, Singapore, Singapore
| | - Melissa C C Teo
- Division of Surgical Oncology, National Cancer Centre, Singapore, Singapore
| | - Jimmy B Y So
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Division of Surgical Oncology, National University Cancer Institute, Singapore, Singapore
| | - Huilin Shao
- Institute for Health Innovation & Technology, National University of Singapore, Singapore, Singapore. .,Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore. .,Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. .,Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore.
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Kumar A, Rajamanickam R, Hazra J, Mahapatra NR, Ghosh P. Engineering the Nonmorphing Point of Actuation for Controlled Drug Release by Hydrogel Bilayer across the pH Spectrum. ACS APPLIED MATERIALS & INTERFACES 2022; 14:56321-56330. [PMID: 36475612 DOI: 10.1021/acsami.2c16658] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hydrogel-based pH-responsive bilayer actuators exhibit bidirectional actuation due to the differences in the concentration gradient developed across the thickness, the volume expansion due to swelling, and the mechanical stiffness of the layers involved. At a pH value (point), where the sum of these factors generates moments of equal magnitudes, the moments cancel each other and result in no net actuation. This pH point is termed here as a "nonmorphing point". In this work, we present a bilayer of chitosan (CS) and carboxymethyl cellulose (CMC) cross-linked with citric acid (CA) with tunable nonmorphing points across the pH spectrum by modulating the concentration and cross-linking density of the layers involved. The standard CS/CMC bilayer films took about 40 s to completely fold (clockwise) in 0.1 M HCl and 78 s to completely fold (anticlockwise) in 0.1 M NaOH. Generally, pH-responsive actuators are designed for targeted drug delivery to a specific site inside the body as they show bidirectional (clockwise/anticlockwise) actuation around a single nonmorphing point. The same pH-responsive system cannot be applied for drug release at another site with a different functioning pH. Thus, having a pH-responsive system with multiple nonmorphing points is highly desirable. Drug release experiments were performed with FITC and EtBr as model drugs loaded in CS and CMC layers. Moreover, the clockwise/anticlockwise actuation of the bilayer around the nonmorphing point can facilitate or inhibit the release of a drug. The clockwise actuation resulted in 55% FITC release and inhibited EtBr release to 4%; anticlockwise actuation resulted in 50% EtBr release and inhibited FITC release to 5%. We demonstrated morphing induced drug release by hydrogel bilayer films with tunable nonmorphing points across the pH spectrum.
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Affiliation(s)
- Amit Kumar
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - Raja Rajamanickam
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
| | - Joyita Hazra
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - Nitish R Mahapatra
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pijush Ghosh
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
- Center for Responsive Soft Matter, Indian Institute of Technology Madras, Chennai 600036, India
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Taneja H, Salodkar SM, Singh Parmar A, Chaudhary S. Hydrogel based 3D printing: Bio ink for tissue engineering. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Wychowaniec JK, Brougham DF. Emerging Magnetic Fabrication Technologies Provide Controllable Hierarchically-Structured Biomaterials and Stimulus Response for Biomedical Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202278. [PMID: 36228106 PMCID: PMC9731717 DOI: 10.1002/advs.202202278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Multifunctional nanocomposites which exhibit well-defined physical properties and encode spatiotemporally-controlled responses are emerging as components for advanced responsive systems. For biomedical applications magnetic nanocomposite materials have attracted significant attention due to their ability to respond to spatially and temporally varying magnetic fields. The current state-of-the-art in development and fabrication of magnetic hydrogels toward biomedical applications is described. There is accelerating progress in the field due to advances in manufacturing capabilities. Three categories can be identified: i) Magnetic hydrogelation, DC magnetic fields are used during solidification/gelation for aligning particles; ii) additive manufacturing of magnetic materials, 3D printing technologies are used to develop spatially-encoded magnetic properties, and more recently; iii) magnetic additive manufacturing, magnetic responses are applied during the printing process to develop increasingly complex structural arrangement that may recapitulate anisotropic tissue structure and function. The magnetic responsiveness of conventionally and additively manufactured magnetic hydrogels are described along with recent advances in soft magnetic robotics, and the categorization is related to final architecture and emergent properties. Future challenges and opportunities, including the anticipated role of combinatorial approaches in developing 4D-responsive functional materials for tackling long-standing problems in biomedicine including production of 3D-specified responsive cell scaffolds are discussed.
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Affiliation(s)
- Jacek K. Wychowaniec
- School of ChemistryUniversity College DublinBelfieldDublin 4Ireland
- AO Research Institute DavosClavadelerstrasse 8Davos7270Switzerland
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Yang J, Chen Y, Zhao L, Zhang J, Luo H. Constructions and Properties of Physically Cross-Linked Hydrogels Based on Natural Polymers. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2137525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Jueying Yang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Yu Chen
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
- Sports & Medicine Integration Research Center (SMIRC), Capital University of Physical Education and Sports, Beijing, China
| | - Lin Zhao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Jinghua Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Hang Luo
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
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Weaver E, Uddin S, Lamprou DA. Emerging technologies for combating pandemics. Expert Rev Med Devices 2022; 19:533-538. [PMID: 35983986 DOI: 10.1080/17434440.2022.2115355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Covid-19, alongside previous pandemics, has highlighted the need for the continued development of technologies that are at our disposal. Emerging technologies are those that show true promise in achieving such a goal and have begun to form sturdy independent research areas. Technological advances in healthcare must continually develop to ensure that the world is prepared for any future diseases that may ensue. As such, a strategic review into 39 manuscripts since 2019 has been conducted to determine the prominence of emerging technologies since the beginning of the Covid-19 pandemic. AREAS COVERED Relating to their use in a pandemic state, additive manufacturing (AM), biofabrication, microfluidics, biomedical microelectromechanical systems (BioMEMS), and artificial intelligence (AI) are described. Applications over the past 2-3 years, as well as future developments, are considered throughout. EXPERT OPINION All the technologies mentioned in this review are sure to develop further, having shown their importance and value during the covid-19 pandemic. As research continues within the area, their efficacy will increase to the point where it likely will become gold standard for pandemic control. Combining certain technologies mentioned has also proved to have had great success in improving the final results obtained.
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Affiliation(s)
- Edward Weaver
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Shahid Uddin
- Immunocore, 92 Park Drive, Milton, Abingdon, OX14 4RY, UK
| | - Dimitrios A Lamprou
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
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Multitasking smart hydrogels based on the combination of alginate and poly(3,4-ethylenedioxythiophene) properties: A review. Int J Biol Macromol 2022; 219:312-332. [PMID: 35934076 DOI: 10.1016/j.ijbiomac.2022.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/28/2022] [Accepted: 08/02/2022] [Indexed: 11/05/2022]
Abstract
Poly(3,4-ethylenedioxythiophene) (PEDOT), a very stable and biocompatible conducting polymer, and alginate (Alg), a natural water-soluble polysaccharide mainly found in the cell wall of various species of brown algae, exhibit very different but at the same complementary properties. In the last few years, the remarkable capacity of Alg to form hydrogels and the electro-responsive properties of PEDOT have been combined to form not only layered composites (PEDOT-Alg) but also interpenetrated multi-responsive PEDOT/Alg hydrogels. These materials have been found to display outstanding properties, such as electrical conductivity, piezoelectricity, biocompatibility, self-healing and re-usability properties, pH and thermoelectric responsiveness, among others. Consequently, a wide number of applications are being proposed for PEDOT-Alg composites and, especially, PEDOT/Alg hydrogels, which should be considered as a new kind of hybrid material because of the very different chemical nature of the two polymeric components. This review summarizes the applications of PEDOT-Alg and PEDOT/Alg in tissue interfaces and regeneration, drug delivery, sensors, microfluidics, energy storage and evaporators for desalination. Special attention has been given to the discussion of multi-tasking applications, while the new challenges to be tackled based on aspects not yet considered in either of the two polymers have also been highlighted.
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New Materials Based on Polyvinylpyrrolidone-Containing Copolymers with Ferromagnetic Fillers. MATERIALS 2022; 15:ma15155183. [PMID: 35897617 PMCID: PMC9331775 DOI: 10.3390/ma15155183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/20/2022] [Accepted: 07/22/2022] [Indexed: 01/27/2023]
Abstract
The article investigates the peculiarities of the effect of ferromagnetic fillers (FMFs) of various natures (Ni, Co, Fe, FeCo, SmCo5) on the formation of the structure and properties of 2-hydroxyethylmethacrylate (HEMA) with polyvinylpyrrolidone (PVP) copolymers. The composites were characterized using FTIR-spectroscopy, SEM, DMTA, magnetometry of vibrating samples, specific electrical resistivity studies, and mechanical and thermophysical studies. The formation of a grafted spatially crosslinked copolymer (pHEMA-gr-PVP) was confirmed and it was established that the FMF introduction of only 10 wt.% into the copolymer formulation increased the degree of crosslinking of the polymer network by three times. The surface hardness of composites increased by 20–25%. However, the water content decreased by 16–18% and lay within 42–43 wt.%, which is a relatively high number. The heat resistance of dry composites was characterized by Vicat softening temperature, which was 39–42 °C higher compared to the unfilled material. It was established that the obtained composites were characterized by a coercive force of 200 kA × m−1 and induction of a magnetic field at the poles of 4–5 mT and 10–15 mT, respectively. The introduction of FMF particles into pHEMA-gr-PVP copolymers, which, in the dry state, are dielectrics, provides them with electrical conductivity, which was evaluated by the specific volume resistance. Depending on the FMF nature and content, as well as their orientation in the magnetic field, the resistance of filled materials could be regulated within 102–106 Ohm·m. Therefore, the modification of HEMA with PVP copolymers by ferromagnetic fillers of various natures provides the possibility of obtaining materials with unique predicted properties and expands the fields of their use, for instance as magnetic sorbents for various applications, as well as the possibilities associated with their being electrically conductive materials that can respond by changing of electrical conductivity, depending on various factors.
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20
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Xu K, Li D, Shang E, Liu Y. A Heating-Assisted Direct Ink Writing Method for Preparation of PDMS Cellular Structure with High Manufacturing Fidelity. Polymers (Basel) 2022; 14:polym14071323. [PMID: 35406197 PMCID: PMC9002618 DOI: 10.3390/polym14071323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 01/27/2023] Open
Abstract
In response to the fact that most of the current research on silicone 3D printing suffers from structure collapse and dimensional mismatch, this paper proposes a heating-assisted direct writing printing method for commercial silicone rubber materials for preparing silicone foam with enhanced fidelity. In the experimental processes, the effects of substrate temperature, printing pressure, and printing speed on the filament width were investigated using a controlled variable method. The results showed the following: (1) the diameter of silicone rubber filaments was positively correlated with the printing pressure and substrate temperature, but negatively correlated with the printing speed; (2) the filament collapse of the large filament spaced foams was significantly improved by the addition of the thermal field, which, in turn, improved the mechanical properties and manufacturing stability of the silicon foams. The heating-assisted direct writing process in this paper can facilitate the development of the field of microelectronics and the direct printing of biomaterials.
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Affiliation(s)
- Kang Xu
- School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China; (K.X.); (D.L.); (E.S.)
- Jiangsu Key Lab of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi 214122, China
| | - Dongya Li
- School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China; (K.X.); (D.L.); (E.S.)
- Jiangsu Key Lab of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi 214122, China
| | - Erwei Shang
- School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China; (K.X.); (D.L.); (E.S.)
- Jiangsu Key Lab of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi 214122, China
| | - Yu Liu
- School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China; (K.X.); (D.L.); (E.S.)
- Jiangsu Key Lab of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi 214122, China
- Correspondence:
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Tian Y, Huang X, Cheng Y, Niu Y, Ma J, Zhao Y, Kou X, Ke Q. Applications of adhesives in textiles: A review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111089] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Balakrishnan G, Song J, Mou C, Bettinger CJ. Recent Progress in Materials Chemistry to Advance Flexible Bioelectronics in Medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106787. [PMID: 34751987 PMCID: PMC8917047 DOI: 10.1002/adma.202106787] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/15/2021] [Indexed: 05/09/2023]
Abstract
Designing bioelectronic devices that seamlessly integrate with the human body is a technological pursuit of great importance. Bioelectronic medical devices that reliably and chronically interface with the body can advance neuroscience, health monitoring, diagnostics, and therapeutics. Recent major efforts focus on investigating strategies to fabricate flexible, stretchable, and soft electronic devices, and advances in materials chemistry have emerged as fundamental to the creation of the next generation of bioelectronics. This review summarizes contemporary advances and forthcoming technical challenges related to three principal components of bioelectronic devices: i) substrates and structural materials, ii) barrier and encapsulation materials, and iii) conductive materials. Through notable illustrations from the literature, integration and device fabrication strategies and associated challenges for each material class are highlighted.
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Affiliation(s)
| | - Jiwoo Song
- Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Chenchen Mou
- Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
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Liu S, Wang W, Xu W, Liu L, Zhang W, Song K, Chen X. Continuous Three-Dimensional Printing of Architected Piezoelectric Sensors in Minutes. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9790307. [PMID: 35935134 PMCID: PMC9318352 DOI: 10.34133/2022/9790307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/11/2022] [Indexed: 11/06/2022]
Abstract
Additive manufacturing (AM), also known as three-dimensional (3D) printing, is thriving as an effective and robust method in fabricating architected piezoelectric structures, yet most of the commonly adopted printing techniques often face the inherent speed-accuracy trade-off, limiting their speed in manufacturing sophisticated parts containing micro-/nanoscale features. Herein, stabilized, photo-curable resins comprising chemically functionalized piezoelectric nanoparticles (PiezoNPs) were formulated, from which microscale architected 3D piezoelectric structures were printed continuously via micro continuous liquid interface production (μCLIP) at speeds of up to ~60 μm s-1, which are more than 10 times faster than the previously reported stereolithography-based works. The 3D-printed functionalized barium titanate (f-BTO) composites reveal a bulk piezoelectric charge constant d 33 of 27.70 pC N-1 with the 30 wt% f-BTO. Moreover, rationally designed lattice structures that manifested enhanced, tailorable piezoelectric sensing performance as well as mechanical flexibility were tested and explored in diverse flexible and wearable self-powered sensing applications, e.g., motion recognition and respiratory monitoring.
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Affiliation(s)
- Siying Liu
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
- School for Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ 85287, USA
| | - Wenbo Wang
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
| | - Weiheng Xu
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
| | - Luyang Liu
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
| | - Wenlong Zhang
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
| | - Kenan Song
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
| | - Xiangfan Chen
- School of Manufacturing Systems and Networks, Arizona State University, Mesa, AZ 85212, USA
- The Polytechnic School, Arizona State University, Mesa, AZ 85212, USA
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Crystallization of the Multi-Receptor Tyrosine Kinase Inhibitor Sorafenib for Controlled Long-Term Drug Delivery Following a Single Injection. Cell Mol Bioeng 2021; 14:471-486. [PMID: 34777605 DOI: 10.1007/s12195-021-00708-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 09/20/2021] [Indexed: 10/20/2022] Open
Abstract
Introduction A major challenge in cancer medicine is the safe and effective delivery of drugs to the right tissue at the right time. Despite being designed for greater target specificity, many drugs still result in side effects and lack of safety in patients following global dissemination. Therefore, to develop new, more effective formulations capable of improving specificity and reducing off-target effects, here we describe formulation of drug crystals, from even a very hydrophobic and otherwise difficult to solubilize small molecule chemical compound, capable of providing constant drug release for weeks following a single injection. Methods We chose to utilize the multi-tyrosine kinase inhibitor and multi-modal (anti-angiogenic and tumor cell cytotoxic) agent sorafenib, to combat aberrant angiogenesis and tumor growth which contribute to metastasis, ultimately responsible for poor patient outcomes. We tuned crystal size (surface area:volume ratios), imaged by SEM, to display controllability of drug delivery kinetics in in vitro drug release assays. Results Single and powder crystal X-ray diffraction (XRD) established that all crystals were the same polymorph and drug form. When utilized against an orthotopic triple negative breast cancer (TNBC) mouse model (4T1 in syngeneic BALB/c mice), we established anti-tumor activity from a single local, subcutaneous injection of crystalline sorafenib. Conclusion From our findings, we support that engineering crystalline drug delivery systems has implications in the treatment of cancer or other diseases where high enough constitutive drug levels are needed to maintain target saturation and inhibition while also preventing emergence of drug resistance, which is a consequence often seen with suboptimal dosing. Supplementary Information The online version contains supplementary material available at 10.1007/s12195-021-00708-6.
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Ragelle H, Rahimian S, Guzzi EA, Westenskow PD, Tibbitt MW, Schwach G, Langer R. Additive manufacturing in drug delivery: Innovative drug product design and opportunities for industrial application. Adv Drug Deliv Rev 2021; 178:113990. [PMID: 34600963 DOI: 10.1016/j.addr.2021.113990] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/21/2021] [Accepted: 09/21/2021] [Indexed: 02/06/2023]
Abstract
Additive manufacturing (AM) or 3D printing is enabling new directions in product design. The adoption of AM in various industrial sectors has led to major transformations. Similarly, AM presents new opportunities in the field of drug delivery, opening new avenues for improved patient care. In this review, we discuss AM as an innovative tool for drug product design. We provide a brief overview of the different AM processes and their respective impact on the design of drug delivery systems. We highlight several enabling features of AM, including unconventional release, customization, and miniaturization, and discuss several applications of AM for the fabrication of drug products. This includes products that have been approved or are in development. As the field matures, there are also several new challenges to broad implementation in the pharmaceutical landscape. We discuss several of these from the regulatory and industrial perspectives and provide an outlook for how these issues may be addressed. The introduction of AM into the field of drug delivery is an enabling technology and many new drug products can be created through productive collaboration of engineers, materials scientists, pharmaceutical scientists, and industrial partners.
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Sivaperuman Kalairaj M, Banerjee H, Senthil Kumar K, Lopez KG, Ren H. Thermo-Responsive Hydrogel-Based Soft Valves with Annular Actuation Calibration and Circumferential Gripping. Bioengineering (Basel) 2021; 8:127. [PMID: 34562949 PMCID: PMC8468597 DOI: 10.3390/bioengineering8090127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/31/2021] [Accepted: 09/11/2021] [Indexed: 11/24/2022] Open
Abstract
Valves are largely useful for treatment assistance devices, e.g., supporting fluid circulation movement in the human body. However, the valves presently used in biomedical applications still use materials that are rigid, non-compliant, and hard to integrate with human tissues. Here, we propose biologically-inspired, stimuli-responsive valves and evaluate N-Isopropylacrylamide hydrogels-based valve (NPHV) and PAAm-alginate hydrogels-based valve (PAHV) performances with different chemical syntheses for optimizing better valve action. Once heated at 40 ∘C, the NPHV outperforms the PAHV in annular actuation (NPHV: 1.93 mm displacement in 4 min; PAHV: 0.8 mm displacement in 30 min). In contrast, the PAHV exhibits a flow rate change of up to 20%, and a payload of 100% when the object is at 100 ∘C. The PAHV demonstrated a completely soft, stretchable circular gripper with a high load-to-weight ratio for diversified applications. These valves are fabricated with a simple one-pot method that, once further optimized, can offer transdisciplinary applications.
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Affiliation(s)
- Manivannan Sivaperuman Kalairaj
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Hritwick Banerjee
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Kirthika Senthil Kumar
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Keith Gerard Lopez
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
| | - Hongliang Ren
- Department of Biomedical Engineering, National University of Singapore, Singapore 117575, Singapore; (M.S.K.); (H.B.); (K.S.K.); (K.G.L.)
- Department of Electronic Engineering, The Chinese University of Hong Kong, Central Ave., Hong Kong, China
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27
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Hu X, Fu Y, Wu T, Qu S. Study of non-uniform axial magnetic field induced deformation of a soft cylindrical magneto-active actuator. SOFT MATTER 2021; 17:7498-7505. [PMID: 34338275 DOI: 10.1039/d1sm00757b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Magneto-active polymers (MAPs) can undergo rapid and noticeable deformation through external wireless magnetic stimulation, offering a possibility to develop potential applications such as in actuators, flexible micro-grippers, soft robots, etc. In this paper, a theoretical model is presented to depict the relationship between nonlinear deformation and the external mechanical load applied on cylindrical samples in the presence of magnetic fields generated by an electromagnet. The geometrical and electromagnetic properties of the electromagnet are explicitly modeled in COMSOL Multiphysics based on the measured data. Furthermore, a finite element model is constructed to obtain detailed information (such as strain field), which cannot be obtained in experiments. The theoretical and simulation results fit quite well with the experimental results, showing the accuracy of the model construction. The proposed designing approach and model provide guidelines for researchers to enrich the applications of MAPs.
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Affiliation(s)
- Xiaocheng Hu
- State Key Laboratory of Fluid Power & Mechatronic System, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Center for X-Mechanics, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China.
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28
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Abstract
Smart materials are a kind of functional materials which can sense and response to environmental conditions or stimuli from optical, electrical, magnetic mechanical, thermal, and chemical signals, etc. Patterning of smart materials is the key to achieving large-scale arrays of functional devices. Over the last decades, printing methods including inkjet printing, template-assisted printing, and 3D printing are extensively investigated and utilized in fabricating intelligent micro/nano devices, as printing strategies allow for constructing multidimensional and multimaterial architectures. Great strides in printable smart materials are opening new possibilities for functional devices to better serve human beings, such as wearable sensors, integrated optoelectronics, artificial neurons, and so on. However, there are still many challenges and drawbacks that need to be overcome in order to achieve the controllable modulation between smart materials and device performance. In this review, we give an overview on printable smart materials, printing strategies, and applications of printed functional devices. In addition, the advantages in actual practices of printing smart materials-based devices are discussed, and the current limitations and future opportunities are proposed. This review aims to summarize the recent progress and provide reference for novel smart materials and printing strategies as well as applications of intelligent devices.
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Affiliation(s)
- Meng Su
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street 2, 100190 Beijing, P. R. China.,University of Chinese Academy of Sciences, Yuquan Road no.19A, 100049 Beijing, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Zhongguancun North First Street 2, 100190 Beijing, P. R. China.,University of Chinese Academy of Sciences, Yuquan Road no.19A, 100049 Beijing, P. R. China
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29
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Zeng H, Wang Y, Jiang T, Xia H, Gu X, Chen H. Recent progress of biomimetic motions-from microscopic micro/nanomotors to macroscopic actuators and soft robotics. RSC Adv 2021; 11:27406-27419. [PMID: 35480677 PMCID: PMC9037800 DOI: 10.1039/d1ra05021d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/05/2021] [Indexed: 12/24/2022] Open
Abstract
Motion is a basic behavioral attribute of organisms, and it is a behavioral response of organisms to the external environment and internal state changes. Materials with switchable mechanical properties are widespread in living organisms and play crucial roles in the motion of organisms. Therefore, significant efforts have been made toward mimicking such architectures and motion behaviors by making full use of the properties of stimulus-responsive materials to design smart materials/machines with specific functions. In recent years, the biomimetic motions based on micro/nanomotors, actuators and soft robots constructed from smart response materials have been developed gradually. However, a comprehensive discussion on various categories of biomimetic motions in this field is still missing. This review aims to provide such a panoramic overview. From nano-to macroscales, we summarize various biomimetic motions based on micro/nanomotors, actuators and soft robotics. For each biomimetic motion, we discuss the driving modes and the key functions. The challenges and opportunities of biomimetic motions are also discussed. With rapidly increasing innovation, advanced, intelligent and multifunctional biomimetic motions based on micro/nanomotors, actuators and soft robotics will certainly bring profound impacts and changes for human life in the near future. Biomimetic motions are derived from the many different functional materials and/or intricate and highly organized structure of the biological material from the molecular to the nanoscale, microscale and macroscale.![]()
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Affiliation(s)
- Hongbo Zeng
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University Jiaxing 314001 China
| | - Yu Wang
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University Jiaxing 314001 China
| | - Tao Jiang
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University Jiaxing 314001 China
| | - Hongqin Xia
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University Jiaxing 314001 China
| | - Xue Gu
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University Jiaxing 314001 China
| | - Hongxu Chen
- Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University Jiaxing 314001 China .,Nanotechnology Research Institute (NRI), Jiaxing University Jiaxing 314001 China
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30
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Aoki D, Ajiro H. One-Shot Preparation of Thermoresponsive Comb Polyurethane Hydrogel for Both Excellent Toughness and Large Volume Switching. Macromol Rapid Commun 2021; 42:e2100128. [PMID: 33987865 DOI: 10.1002/marc.202100128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/21/2021] [Indexed: 12/26/2022]
Abstract
Thermoresponsive degradable polyurethane (PU) hydrogels are expected as the next-generation biomedical devices, although they have an important trade-off relationship between toughness and thermoresponsive properties. Tough and thermoresponsive comb PU hydrogels are prepared by one-shot poly-addition between hexamethylene diisocyanate, triethylene glycol tartrate ester, poly(ethylene glycol) 300 (PEG300), and glycerol. The swelling ratio change between 4 and 40 °C decreases as the proportion of PEG300 increases and is maintained at 600% switching within 30% PEG300. Moreover, the one-shot preparation of comb PU hydrogel with PEG300 improves toughness up to 100 times compared to the original comb PU hydrogel. Rheological analysis suggests that the bimodal toughening phenomenon for the proportion of PEG300 is due to the network structure and the hydrophobic aggregation domain. This simple toughening method using a heteronetwork based on the kinetic difference of step-growth PU is expected to apply to other chemical structures.
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Affiliation(s)
- Daisuke Aoki
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara, 630-0192, Japan
| | - Hiroharu Ajiro
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara, 630-0192, Japan
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31
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Sun W, Schaffer S, Dai K, Yao L, Feinberg A, Webster-Wood V. 3D Printing Hydrogel-Based Soft and Biohybrid Actuators: A Mini-Review on Fabrication Techniques, Applications, and Challenges. Front Robot AI 2021; 8:673533. [PMID: 33996931 PMCID: PMC8117231 DOI: 10.3389/frobt.2021.673533] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 04/14/2021] [Indexed: 12/16/2022] Open
Abstract
Stimuli-responsive hydrogels are candidate building blocks for soft robotic applications due to many of their unique properties, including tunable mechanical properties and biocompatibility. Over the past decade, there has been significant progress in developing soft and biohybrid actuators using naturally occurring and synthetic hydrogels to address the increasing demands for machines capable of interacting with fragile biological systems. Recent advancements in three-dimensional (3D) printing technology, either as a standalone manufacturing process or integrated with traditional fabrication techniques, have enabled the development of hydrogel-based actuators with on-demand geometry and actuation modalities. This mini-review surveys existing research efforts to inspire the development of novel fabrication techniques using hydrogel building blocks and identify potential future directions. In this article, existing 3D fabrication techniques for hydrogel actuators are first examined. Next, existing actuation mechanisms, including pneumatic, hydraulic, ionic, dehydration-rehydration, and cell-powered actuation, are reviewed with their benefits and limitations discussed. Subsequently, the applications of hydrogel-based actuators, including compliant handling of fragile items, micro-swimmers, wearable devices, and origami structures, are described. Finally, challenges in fabricating functional actuators using existing techniques are discussed.
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Affiliation(s)
- Wenhuan Sun
- Biohybrid and Organic Robotics Group, Department of Mechancial Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Saul Schaffer
- Biohybrid and Organic Robotics Group, Department of Mechancial Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Kevin Dai
- Biohybrid and Organic Robotics Group, Department of Mechancial Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Lining Yao
- Morphing Matter Lab, Human-Computer Interaction Institute, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Adam Feinberg
- Regenerative Biomaterials and Therapeutics Group, Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Victoria Webster-Wood
- Biohybrid and Organic Robotics Group, Department of Mechancial Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
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32
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Azar MG, Dodda JM, Bělský P, Šlouf M, Vavruňková V, Kadlec J, Remiš T. Tough and flexible conductive triple network hydrogels based on agarose/polyacrylamide/polyvinyl alcohol and
poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate. POLYM INT 2021. [DOI: 10.1002/pi.6232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mina Ghafouri Azar
- New Technologies – Research Centre (NTC) University of West Bohemia Pilsen Czech Republic
| | - Jagan Mohan Dodda
- New Technologies – Research Centre (NTC) University of West Bohemia Pilsen Czech Republic
| | - Petr Bělský
- New Technologies – Research Centre (NTC) University of West Bohemia Pilsen Czech Republic
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry CAS Prague Czech Republic
| | - Veronika Vavruňková
- New Technologies – Research Centre (NTC) University of West Bohemia Pilsen Czech Republic
| | - Jaroslav Kadlec
- New Technologies – Research Centre (NTC) University of West Bohemia Pilsen Czech Republic
| | - Tomáš Remiš
- New Technologies – Research Centre (NTC) University of West Bohemia Pilsen Czech Republic
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33
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Li H, Ma Y, Huang Y. Material innovation and mechanics design for substrates and encapsulation of flexible electronics: a review. MATERIALS HORIZONS 2021; 8:383-400. [PMID: 34821261 DOI: 10.1039/d0mh00483a] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Advances in materials and mechanics designs have led to the development of flexible electronics, which have important applications to human healthcare due to their good biocompatibility and conformal integration with biological tissue. Material innovation and mechanics design have played a key role in designing the substrates and encapsulations of flexible electronics for various bio-integrated systems. This review first introduces the inorganic materials and novel organic materials used for the substrates and encapsulation of flexible electronics, and summarizes their mechanics properties, permeability and optical transmission properties. The structural designs of the substrates are then introduced to ensure the reliability of flexible electronics, including the patterned and pre-strained designs to improve the stretchability, and the strain-isolation and -limiting substrates to reduce the deformation. Some emerging encapsulations are presented to protect the flexible electronics from degradation, environmental erosion or contamination, though they may slightly reduce the stretchability of flexible electronics.
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Affiliation(s)
- Haibo Li
- Department of Engineering Mechanics, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China.
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34
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Li J, Jia X, Yin L. Hydrogel: Diversity of Structures and Applications in Food Science. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2020.1858313] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jinlong Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, P.R. China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, P.R. China
| | - Xin Jia
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P.R. China
| | - Lijun Yin
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P.R. China
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35
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Rahmer J, Stehning C, Gleich B. Spatially selective remote magnetic actuation of identical helical micromachines. Sci Robot 2021; 2:2/3/eaal2845. [PMID: 33157862 DOI: 10.1126/scirobotics.aal2845] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 01/26/2017] [Indexed: 01/04/2023]
Abstract
Magnetic micromachines can be controlled remotely inside the human body by application of external magnetic fields, making them promising candidates for minimally invasive local therapy delivery. For many therapeutic scenarios, a large team of micromachines is required, but a convincing approach for controlling individual team members is currently missing. We present a method for selective control of identical helical micromachines based on their spatial position. The micromachines are operated by uniform rotating fields, whereas spatial selection is achieved by application of a strong field gradient that locks all machines except those located inside a small movable volume. We deliver experimental evidence of three-dimensional selective actuation with a spatial selectivity on the order of millimeters over a workspace large enough for clinical applications. Selective control of teams of helical micromachines may improve minimally invasive therapeutic approaches and may lead to more flexible local drug delivery systems or adaptive medical implants. As an example, we propose a concept for adaptive radiation treatment in cancer therapy based on selective switching of radioactive sources distributed inside a tumor.
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Affiliation(s)
- Jürgen Rahmer
- Philips GmbH Innovative Technologies, Research Laboratories, Röntgenstraße 24-26, 22335 Hamburg, Germany.
| | | | - Bernhard Gleich
- Philips GmbH Innovative Technologies, Research Laboratories, Röntgenstraße 24-26, 22335 Hamburg, Germany
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36
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Kong L, Gao Z, Li X, Gao G. An amylopectin-enabled skin-mounted hydrogel wearable sensor. J Mater Chem B 2021; 9:1082-1088. [DOI: 10.1039/d0tb02460k] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Self-adhesiveness is highly desirable for conformal and seamless wearable electronics.
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Affiliation(s)
- Lingshu Kong
- Polymeric and Soft Materials Laboratory
- School of Chemical Engineering, and Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun
- P. R. China
| | - Zijian Gao
- Polymeric and Soft Materials Laboratory
- School of Chemical Engineering, and Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun
- P. R. China
| | - Xinyao Li
- Polymeric and Soft Materials Laboratory
- School of Chemical Engineering, and Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun
- P. R. China
| | - Guanghui Gao
- Polymeric and Soft Materials Laboratory
- School of Chemical Engineering, and Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun
- P. R. China
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37
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Deshmukh K, Kovářík T, Khadheer Pasha S. State of the art recent progress in two dimensional MXenes based gas sensors and biosensors: A comprehensive review. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213514] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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38
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Kaynak M, Dirix P, Sakar MS. Addressable Acoustic Actuation of 3D Printed Soft Robotic Microsystems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001120. [PMID: 33101852 PMCID: PMC7578873 DOI: 10.1002/advs.202001120] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/30/2020] [Indexed: 05/30/2023]
Abstract
A design, manufacturing, and control methodology is presented for the transduction of ultrasound into frequency-selective actuation of multibody hydrogel mechanical systems. The modular design of compliant mechanisms is compatible with direct laser writing and the multiple degrees of freedom actuation scheme does not require incorporation of any specific material such as air bubbles. These features pave the way for the development of active scaffolds and soft robotic microsystems from biomaterials with tailored performance and functionality. Finite element analysis and computational fluid dynamics are used to quantitatively predict the performance of acoustically powered hydrogels immersed in fluid and guide the design process. The outcome is the remotely controlled operation of a repertoire of untethered biomanipulation tools including monolithic compound micromachinery with multiple pumps connected to various functional devices. The potential of the presented technology for minimally invasive diagnosis and targeted therapy is demonstrated by a soft microrobot that can on-demand collect, encapsulate, and process microscopic samples.
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Affiliation(s)
- Murat Kaynak
- Institute of Mechanical EngineeringEcole Polytechnique Fédérale de LausanneLausanneCH‐1015Switzerland
| | - Pietro Dirix
- Institute of Mechanical EngineeringEcole Polytechnique Fédérale de LausanneLausanneCH‐1015Switzerland
| | - Mahmut Selman Sakar
- Institute of Mechanical EngineeringEcole Polytechnique Fédérale de LausanneLausanneCH‐1015Switzerland
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39
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Wei T, Liu J, Li D, Chen S, Zhang Y, Li J, Fan L, Guan Z, Lo CM, Wang L, Man K, Sun D. Development of Magnet-Driven and Image-Guided Degradable Microrobots for the Precise Delivery of Engineered Stem Cells for Cancer Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1906908. [PMID: 32954642 DOI: 10.1002/smll.201906908] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Precise delivery of therapeutic cells to the desired site in vivo is an emerging and promising cellular therapy in precision medicine. This paper presents the development of a magnet-driven and image-guided degradable microrobot that can precisely deliver engineered stem cells for orthotopic liver tumor treatment. The microrobot employs a burr-like porous sphere structure and is made with a synthesized composite to fulfill degradability, mechanical strength, and magnetic actuation capability simultaneously. The cells can be spontaneously released from the microrobots on the basis of the optimized microrobot structure. The microrobot is actuated by a gradient magnetic field and guided by a unique photoacoustic imaging technology. In preclinical experiments on nude mice, microrobots carrying cells are injected via the portal vein and the released cells from the microrobots can inhibit the tumor growth greatly. This paper reveals for the first time of using degradable microrobots for precise delivery of therapeutic cells in vascular tissue and demonstrates its therapeutic effect in preclinical test.
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Affiliation(s)
- Tanyong Wei
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Jiang Liu
- Department of Surgery, The University of Hong Kong, Hong Kong SAR, 999077, China
| | - Dongfang Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Shuxun Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Yachao Zhang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Junyang Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Lei Fan
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Zhangyan Guan
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Chung-Mau Lo
- Department of Surgery, The University of Hong Kong, Hong Kong SAR, 999077, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Kwan Man
- Department of Surgery, The University of Hong Kong, Hong Kong SAR, 999077, China
| | - Dong Sun
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
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40
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Drozdov AD, Christiansen JD. Tension-compression asymmetry in the mechanical response of hydrogels. J Mech Behav Biomed Mater 2020; 110:103851. [PMID: 32957177 DOI: 10.1016/j.jmbbm.2020.103851] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/03/2020] [Accepted: 05/05/2020] [Indexed: 12/14/2022]
Abstract
Two factors play the key role in application of hydrogels as biomedical implants (for example, for replacement of damaged intervertebral discs and repair of spinal cord injuries): their stiffness and strength (measured in tensile tests) and mechanical integrity (estimated under uniaxial compression). Observations show a pronounced difference between the responses of hydrogels under tension and compression (the Young's moduli can differ by two orders of magnitude), which is conventionally referred to as the tension-compression asymmetry (TCA). A constitutive model is developed for the mechanical behavior of hydrogels, where TCA is described within the viscoplasticity theory (plastic flow is treated as sliding of junctions between chains with respect to their reference positions). The governing equations involve five material constants with transparent physical meaning. These quantities are found by fitting stress-strain diagrams under tension and compression on a number of pristine and nanocomposite hydrogels with various kinds of chemical and physical bonds between chains. Good agreement is demonstrated between the experimental data and results of simulation. The influence of volume fraction of nanoparticles, concentration of cross-links, and topology of a polymer network on material parameters is analyzed numerically.
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Affiliation(s)
- A D Drozdov
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, Aalborg, 9220, Denmark.
| | - J deC Christiansen
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, Aalborg, 9220, Denmark
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41
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Intravital three-dimensional bioprinting. Nat Biomed Eng 2020; 4:901-915. [DOI: 10.1038/s41551-020-0568-z] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 05/08/2020] [Indexed: 01/14/2023]
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42
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Mallakpour S, Abbasi M. Hydroxyapatite mineralization on chitosan-tragacanth gum/silica@silver nanocomposites and their antibacterial activity evaluation. Int J Biol Macromol 2020; 151:909-923. [DOI: 10.1016/j.ijbiomac.2020.02.167] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/13/2020] [Accepted: 02/15/2020] [Indexed: 01/09/2023]
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43
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Raman R, Langer R. Biohybrid Design Gets Personal: New Materials for Patient-Specific Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1901969. [PMID: 31271257 PMCID: PMC6942246 DOI: 10.1002/adma.201901969] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/15/2019] [Indexed: 05/08/2023]
Abstract
Precision medicine requires materials and devices that can sense and adapt to dynamic physiological and pathological conditions. This motivates the design and manufacture of biohybrid materials that mimic the responsive behaviors demonstrated by natural biological systems. Two parallel approaches to biohybrid design are presented-biomimetics and biointegration. Biohybrid hydrogels that mimic the form and function of natural materials, or that integrate living cells or bioactive moieties, can respond to a range of environmental stimuli in parallel, including heat, light, pH, hydration, enzymes, and electric, mechanical, and magnetic forces. A range of examples that illustrate the tremendous potential of this nascent discipline are presented, and ongoing technical challenges related to manufacturing, storage, transport, and external noninvasive control of these materials that will need to be overcome in the coming years are outlined. The ethical, educational, and regulatory challenges that will govern translation of biohybrid design into medical applications are also discussed. Personalized medical therapies that target the precise needs of patients are a critically needed and expanding market. Biohybrid design offers the unique ability to manufacture materials and devices that match the dynamic and patient-specific in vivo environment, promising to generate more effective and safe therapies that enable personalized care.
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Affiliation(s)
- Ritu Raman
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA, 02142, USA
| | - Robert Langer
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main St., Cambridge, MA, 02142, USA
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44
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Elder B, Neupane R, Tokita E, Ghosh U, Hales S, Kong YL. Nanomaterial Patterning in 3D Printing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907142. [PMID: 32129917 DOI: 10.1002/adma.201907142] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/18/2019] [Indexed: 05/17/2023]
Abstract
The synergistic integration of nanomaterials with 3D printing technologies can enable the creation of architecture and devices with an unprecedented level of functional integration. In particular, a multiscale 3D printing approach can seamlessly interweave nanomaterials with diverse classes of materials to impart, program, or modulate a wide range of functional properties in an otherwise passive 3D printed object. However, achieving such multiscale integration is challenging as it requires the ability to pattern, organize, or assemble nanomaterials in a 3D printing process. This review highlights the latest advances in the integration of nanomaterials with 3D printing, achieved by leveraging mechanical, electrical, magnetic, optical, or thermal phenomena. Ultimately, it is envisioned that such approaches can enable the creation of multifunctional constructs and devices that cannot be fabricated with conventional manufacturing approaches.
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Affiliation(s)
- Brian Elder
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Rajan Neupane
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Eric Tokita
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Udayan Ghosh
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Samuel Hales
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Yong Lin Kong
- Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
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45
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Zhang Z, Wang L, Yu H, Zhang F, Tang L, Feng Y, Feng W. Highly Transparent, Self-Healable, and Adhesive Organogels for Bio-Inspired Intelligent Ionic Skins. ACS APPLIED MATERIALS & INTERFACES 2020; 12:15657-15666. [PMID: 32141727 DOI: 10.1021/acsami.9b22707] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Development of intelligent adaptable materials with unprecedented sensitivity that can mimic the tactile sensing functions of natural skin is a major driving force in the realization of artificial intelligence. Herein, we judiciously designed and synthesized a series of lauryl acrylate-based polymeric organogels with high transparency, mechanical adaptability, self-healing properties, and adhesive capability. Moreover, a robust capacitive sensor with high sensitivity (0.293 kPa-1) was developed by sandwiching the prepared soft, adaptable organogels between two tough conductive hydrogels and then used to monitor various human motions such as finger stretching, wrist bending, and throat movement during chewing. Interestingly, the resulting capacitive sensor could also function as prosthetic skin on a pneumatic soft artificial hand, enabling intelligent haptic perception. The research disclosed herein is expected to provide insights into the rational design of artificial human-like skins with unprecedented functionalities.
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Affiliation(s)
- Zhixing Zhang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
| | - Ling Wang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
| | - Huitao Yu
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
| | - Fei Zhang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
| | - Lin Tang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
| | - Yiyu Feng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin 300350, P. R. China
- Key Laboratory of Materials Processing and Mold, Ministry of Education, Zhengzhou University, Zhengzhou 450002, P. R. China
| | - Wei Feng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300350, P. R. China
- Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin 300350, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300350, P. R. China
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46
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Guzzi EA, Tibbitt MW. Additive Manufacturing of Precision Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1901994. [PMID: 31423679 DOI: 10.1002/adma.201901994] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/27/2019] [Indexed: 06/10/2023]
Abstract
Biomaterials play a critical role in modern medicine as surgical guides, implants for tissue repair, and as drug delivery systems. The emerging paradigm of precision medicine exploits individual patient information to tailor clinical therapy. While the main focus of precision medicine to date is the design of improved pharmaceutical treatments based on "-omics" data, the concept extends to all forms of customized medical care. This includes the design of precision biomaterials that are tailored to meet specific patient needs. Additive manufacturing (AM) enables free-form manufacturing and mass customization, and is a critical enabling technology for the clinical implementation of precision biomaterials. Materials scientists and engineers can contribute to the realization of precision biomaterials by developing new AM technologies, synthesizing advanced (bio)materials for AM, and improving medical-image-based digital design. As the field matures, AM is poised to provide patient-specific tissue and organ substitutes, reproducible microtissues for drug screening and disease modeling, personalized drug delivery systems, as well as customized medical devices.
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Affiliation(s)
- Elia A Guzzi
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, 8092, Zürich, Switzerland
| | - Mark W Tibbitt
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, 8092, Zürich, Switzerland
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47
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48
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Xu P, Xu H, Yang Y, Wang X, An W, Hu Y, Xu S. A nonswellable gradient hydrogel with tunable mechanical properties. J Mater Chem B 2020; 8:2702-2708. [DOI: 10.1039/d0tb00296h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A bone-like nonswellable gradient hydrogel with adjustable mechanical properties was prepared by an acid-heat treatment of polyamide-based hydrogels.
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Affiliation(s)
- Pingping Xu
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
| | - Huaxiu Xu
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
| | - Yang Yang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
| | - Xionglei Wang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
| | - Wenli An
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
| | - Yan Hu
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
| | - Shimei Xu
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan)
- College of Chemistry
- Sichuan University
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49
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Raman R, Hua T, Gwynne D, Collins J, Tamang S, Zhou J, Esfandiary T, Soares V, Pajovic S, Hayward A, Langer R, Traverso G. Light-degradable hydrogels as dynamic triggers for gastrointestinal applications. SCIENCE ADVANCES 2020; 6:eaay0065. [PMID: 32010768 PMCID: PMC6968934 DOI: 10.1126/sciadv.aay0065] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 11/14/2019] [Indexed: 05/21/2023]
Abstract
Triggerable materials capable of being degraded by selective stimuli stand to transform our capacity to precisely control biomedical device activity and performance while reducing the need for invasive interventions. Here, we describe the development of a modular and tunable light-triggerable hydrogel system capable of interfacing with implantable devices. We apply these materials to two applications in the gastrointestinal (GI) tract: a bariatric balloon and an esophageal stent. We demonstrate biocompatibility and on-demand triggering of the material in vitro, ex vivo, and in vivo. Moreover, we characterize performance of the system in a porcine large animal model with an accompanying ingestible LED. Light-triggerable hydrogels have the potential to be applied broadly throughout the GI tract and other anatomic areas. By demonstrating the first use of light-degradable hydrogels in vivo, we provide biomedical engineers and clinicians with a previously unavailable, safe, dynamically deliverable, and precise tool to design dynamically actuated implantable devices.
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Affiliation(s)
- Ritu Raman
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tiffany Hua
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Declan Gwynne
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Joy Collins
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Siddartha Tamang
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jianlin Zhou
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tina Esfandiary
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Vance Soares
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Simo Pajovic
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Alison Hayward
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert Langer
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Giovanni Traverso
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Gastroenterology, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
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50
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Lei J, Zhou Z, Liu Z. Side Chains and the Insufficient Lubrication of Water in Polyacrylamide Hydrogel-A New Insight. Polymers (Basel) 2019; 11:E1845. [PMID: 31717453 PMCID: PMC6918331 DOI: 10.3390/polym11111845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 11/18/2022] Open
Abstract
Existing theories cannot predict the mechanical property changes of polyacrylamide hydrogels with different water content because of the absence of side chains. In this study, polyacrylamide hydrogels are prepared and tested to investigate the side chain effect on their mechanical properties. First, the comparison between the effective chain density and total chain density provides proof of the large amount of side chains in the polymer network of PAAm hydrogel. We propose a practical chain density fraction to measure the side chain fraction. Then, the abnormal Young's moduli-polymer volume fraction relationship reveals that side chains affect the mechanical properties of hydrogel through the insufficient lubrication of water. Water confined in narrow space within a molecular-level size can bear shear force to provide extra deformation resistance. A constitutive mode considering the effect of the insufficient lubrication of water is proposed. Combining this constitutive model with experimental results, we find that this insufficient lubrication of water exists even in equilibrium PAAm hydrogel. Molecular dynamics simulations reveal that this insufficient lubrication of water comes from the constraint of polymer chains. It also demonstrates that when there is insufficient lubrication, the rearrangement of water molecules leads to the persistent energy dissipation in the Mullins effect of PAAm hydrogel.
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Affiliation(s)
| | | | - Zishun Liu
- International Center for Applied Mechanics, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China; (J.L.); (Z.Z.)
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