共查询到20条相似文献,搜索用时 15 毫秒
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Jaehong Lee Byron Llerena Zambrano Janghoon Woo Kukro Yoon Taeyoon Lee 《Advanced materials (Deerfield Beach, Fla.)》2020,32(5):1902532
Research on wearable electronic devices that can be directly integrated into daily textiles or clothes has been explosively grown holding great potential for various practical wearable applications. These wearable electronic devices strongly demand 1D electronic devices that are light–weight, weavable, highly flexible, stretchable, and adaptable to comport to frequent deformations during usage in daily life. To this end, the development of 1D electrodes with high stretchability and electrical performance is fundamentally essential. Herein, the recent process of 1D stretchable electrodes for wearable and textile electronics is described, focusing on representative conductive materials, fabrication techniques for 1D stretchable electrodes with high performance, and designs and applications of various 1D stretchable electronic devices. To conclude, discussions are presented regarding limitations and perspectives of current materials and devices in terms of performance and scientific understanding that should be considered for further advances. 相似文献
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Transparent,stretchable, and rapid-response humidity sensor for body-attachable wearable electronics
Tran Quang Trung Le Thai Duy Subramanian Ramasundaram Nae-Eung Lee 《Nano Research》2017,10(6):2021-2033
Stretchable and conformal humidity sensors that can be attached to the human body for continuously monitoring the humidity of the environment around the human body or the moisture level of the human skin can play an important role in electronic skin and personal healthcare applications.However,most stretchable humidity sensors are based on the geometric engineering of non-stretchable components and only a few detailed studies are available on stretchable humidity sensors under applied mechanical deformations.In this paper,we propose a transparent,stretchable humidity sensor with a simple fabrication process,having intrinsically stretchable components that provide high stretchability,sensitivity,and stability along with fast response and relaxation time.Composed of reduced graphene oxide-polyurethane composites and an elastomeric conductive electrode,this device exhibits impressive response and relaxation time as fast as 3.5 and 7 s,respectively.The responsivity and the response and relaxation time of the device in the presence of humidity remain almost unchanged under stretching up to a strain of 60% and after 10,000 stretching cycles at a 40% strain.Further,these stretchable humidity sensors can be easily and conformally attached to a finger for monitoring the humidity levels of the environment around the human body,wet objects,or human skin. 相似文献
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Negatively Strain‐Dependent Electrical Resistance of Magnetically Arranged Nickel Composites: Application to Highly Stretchable Electrodes and Stretchable Lighting Devices 下载免费PDF全文
Sangwoo Kim Junghwan Byun Seongdae Choi Donghyun Kim Taehoon Kim Seungjun Chung Yongtaek Hong 《Advanced materials (Deerfield Beach, Fla.)》2014,26(19):3094-3099
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Stretchable Electrodes: Negatively Strain‐Dependent Electrical Resistance of Magnetically Arranged Nickel Composites: Application to Highly Stretchable Electrodes and Stretchable Lighting Devices (Adv. Mater. 19/2014) 下载免费PDF全文
Sangwoo Kim Junghwan Byun Seongdae Choi Donghyun Kim Taehoon Kim Seungjun Chung Yongtaek Hong 《Advanced materials (Deerfield Beach, Fla.)》2014,26(19):2965-2965
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Yang Yang Su Ding Teppei Araki Jinting Jiu Tohru Sugahara Jun Wang Jan Vanfleteren Tsuyoshi Sekitani Katsuaki Suganuma 《Nano Research》2016,9(2):401-414
Silver nanowires (AgNWs) have emerged as a promising nanomaterial for next generation stretchable electronics. However, until now, the fabrication of AgNWbased components has been hampered by complex and time-consuming steps. Here, we introduce a facile, fast, and one-step methodology for the fabrication of highly conductive and stretchable AgNW/polyurethane (PU) composite electrodes based on a high-intensity pulsed light (HIPL) technique. HIPL simultaneously improved wire–wire junction conductivity and wire–substrate adhesion at room temperature and in air within 50 μs, omitting the complex transfer–curing–implanting process. Owing to the localized deformation of PU at interfaces with AgNWs, embedding of the nanowires was rapidly carried out without substantial substrate damage. The resulting electrode retained a low sheet resistance (high electrical conductivity) of <10 Ω/sq even under 100% strain, or after 1,000 continuous stretching–relaxation cycles, with a peak strain of 60%. The fabricated electrode has found immediate application as a sensor for motion detection. Furthermore, based on our electrode, a light emitting diode (LED) driven by integrated stretchable AgNW conductors has been fabricated. In conclusion, our present fabrication approach is fast, simple, scalable, and costefficient, making it a good candidate for a future roll-to-roll process. 相似文献
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Zihang Yang Zirui Zhai Zeming Song Yingzhu Wu Jiahao Liang Yingfa Shan Jinren Zheng Haichao Liang Hanqing Jiang 《Advanced materials (Deerfield Beach, Fla.)》2020,32(10):1907495
Due to the intrinsic properties of fabrics, fabric-based wearable systems have certain advantages over elastomeric material-based stretchable electronics. Here, a method to produce highly stretchable, conductive, washable, and solderable fibers that consist of elastic polyurethane (PU) fibers and conductive Cu fibers, which are used as interconnects for wearable electronics, is reported. The 3D helical shape results from stress relaxation of the prestretched PU fiber and the plasticity of the Cu fiber, which provides a predictable way to manipulate the morphology of the 3D fibers. The present fibers have superior mechanical and electrical properties to many other conductive fibers fabricated through different approaches. The 3D helical fibers can be readily integrated with fabrics and other functional components to build fabric-based wearable systems. 相似文献
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Matija Varga Andreas Mehmann Josip Marjanovic Jonas Reber Christian Vogt Klaas Paul Pruessmann Gerhard Tröster 《Advanced materials (Deerfield Beach, Fla.)》2017,29(44)
Stretchable conductors based on eutectic gallium–indium (eGaIn) alloy are patterned on a polychloroprene substrate (neoprene foam) using stencil printing. By tuning the amount of eGaIn on the neoprene substrate, different strain‐sensitivity of electrical resistance is achieved. Conductors with a layer of eGaIn, which adsorbs to the walls of 60–100 µm wide neoprene cells, change their electrical resistance for 5% at 100% strain. When the amount of eGaIn is increased, the cells are filled with eGaIn and the strain‐sensitivity of the electrical resistance rises to 300% at 100% strain. The developed conductors are patterned as stretchable on‐body coils for receiving magnetic signals in a clinical magnetic resonance imaging setup. First images with a stretchable coil are acquired on an orange and compared to the images that are recorded using a rigid copper coil of the same size. 相似文献
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可拉伸超疏水材料能大幅度提升疏水材料的力学性能,在未来科技产品中应用潜力极大。可拉伸超疏水材料制备方法分为弹性材料的使用、可拉伸结构的设计、弹性材料与可拉伸结构的结合。本文分析了各类制备方法的原理及优缺点,总结了提高可拉伸超疏水材料耐久性的有效措施,阐述了可拉伸超疏水材料在柔性传感器、新兴电子设备、医疗防护、液相混合物纯化、微液滴控制领域的应用原理及特点。现有可拉伸超疏水材料尚面临耐久性能不足、制备成本高、工艺复杂等问题,研究应聚焦于材料体系的进一步开发、拉伸原理的完善以及新技术新工艺的引入。未来的发展方向是轻薄、柔性、绿色环保、智能化和精细化。 相似文献
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Benjamin C.‐K. Tee Jeffrey B.‐H. Tok Zhenan Bao 《Advanced materials (Deerfield Beach, Fla.)》2013,25(42):5997-6038
Human skin is a remarkable organ. It consists of an integrated, stretchable network of sensors that relay information about tactile and thermal stimuli to the brain, allowing us to maneuver within our environment safely and effectively. Interest in large‐area networks of electronic devices inspired by human skin is motivated by the promise of creating autonomous intelligent robots and biomimetic prosthetics, among other applications. The development of electronic networks comprised of flexible, stretchable, and robust devices that are compatible with large‐area implementation and integrated with multiple functionalities is a testament to the progress in developing an electronic skin (e‐skin) akin to human skin. E‐skins are already capable of providing augmented performance over their organic counterpart, both in superior spatial resolution and thermal sensitivity. They could be further improved through the incorporation of additional functionalities (e.g., chemical and biological sensing) and desired properties (e.g., biodegradability and self‐powering). Continued rapid progress in this area is promising for the development of a fully integrated e‐skin in the near future. 相似文献
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A Stretchable Graphitic Carbon/Si Anode Enabled by Conformal Coating of a Self‐Healing Elastic Polymer 下载免费PDF全文
Yongming Sun Jeffrey Lopez Hyun‐Wook Lee Nian Liu Guangyuan Zheng Chun‐Lan Wu Jie Sun Wei Liu Jong Won Chung Zhenan Bao Yi Cui 《Advanced materials (Deerfield Beach, Fla.)》2016,28(12):2455-2461
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EGaIn‐Assisted Room‐Temperature Sintering of Silver Nanoparticles for Stretchable,Inkjet‐Printed,Thin‐Film Electronics 下载免费PDF全文
Mahmoud Tavakoli Mohammad H. Malakooti Hugo Paisana Yunsik Ohm Daniel Green Marques Pedro Alhais Lopes Ana P. Piedade Anibal T. de Almeida Carmel Majidi 《Advanced materials (Deerfield Beach, Fla.)》2018,30(29)
Coating inkjet‐printed traces of silver nanoparticle (AgNP) ink with a thin layer of eutectic gallium indium (EGaIn) increases the electrical conductivity by six‐orders of magnitude and significantly improves tolerance to tensile strain. This enhancement is achieved through a room‐temperature “sintering” process in which the liquid‐phase EGaIn alloy binds the AgNP particles (≈100 nm diameter) to form a continuous conductive trace. Ultrathin and hydrographically transferrable electronics are produced by printing traces with a composition of AgNP‐Ga‐In on a 5 µm‐thick temporary tattoo paper. The printed circuit is flexible enough to remain functional when deformed and can support strains above 80% with modest electromechanical coupling (gauge factor ≈1). These mechanically robust thin‐film circuits are well suited for transfer to highly curved and nondevelopable 3D surfaces as well as skin and other soft deformable substrates. In contrast to other stretchable tattoo‐like electronics, the low‐cost processing steps introduced here eliminate the need for cleanroom fabrication and instead requires only a commercial desktop printer. Most significantly, it enables functionalities like “electronic tattoos” and 3D hydrographic transfer that have not been previously reported with EGaIn or EGaIn‐based biphasic electronics. 相似文献
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Thermochromic material is a kind of smart material whose color will vary as the result of the phase transition caused by the temperature change. The characteristics of thermochromic materials are the memory functions to the temperature, having great potential applications in aerospace, military, anti-counterfeiting technology, construction and other fields. In recent years, many kinds of thermochromic materials have been prepared by different methods and their discoloration mechanisms are various according to published literatures. In this paper, the classification, discoloration mechanism, preparation methods, application fields and development trend of thermochromic materials are reviewed. 相似文献
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Stretchable Electronics: EGaIn‐Assisted Room‐Temperature Sintering of Silver Nanoparticles for Stretchable,Inkjet‐Printed,Thin‐Film Electronics (Adv. Mater. 29/2018) 下载免费PDF全文
Mahmoud Tavakoli Mohammad H. Malakooti Hugo Paisana Yunsik Ohm Daniel Green Marques Pedro Alhais Lopes Ana P. Piedade Anibal T. de Almeida Carmel Majidi 《Advanced materials (Deerfield Beach, Fla.)》2018,30(29)
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Hao Liu Moxiao Li Cheng Ouyang Tian Jian Lu Fei Li Feng Xu 《Small (Weinheim an der Bergstrasse, Germany)》2018,14(36)
The ever‐growing overlap between stretchable electronic devices and wearable healthcare applications is igniting the discovery of novel biocompatible and skin‐like materials for human‐friendly stretchable electronics fabrication. Amongst all potential candidates, hydrogels with excellent biocompatibility and mechanical features close to human tissues are constituting a promising troop for realizing healthcare‐oriented electronic functionalities. In this work, based on biocompatible and stretchable hydrogels, a simple paradigm to prototype stretchable electronics with an embedded three‐dimensional (3D) helical conductive layout is proposed. Thanks to the 3D helical structure, the hydrogel electronics present satisfactory mechanical and electrical robustness under stretch. In addition, reusability of stretchable electronics is realized with the proposed scenario benefiting from the swelling property of hydrogel. Although losing water would induce structure shrinkage of the hydrogel network and further undermine the function of hydrogel in various applications, the worn‐out hydrogel electronics can be reused by simply casting it in water. Through such a rehydration procedure, the dehydrated hydrogel can absorb water from the surrounding and then the hydrogel electronics can achieve resilience in mechanical stretchability and electronic functionality. Also, the ability to reflect pressure and strain changes has revealed the hydrogel electronics to be promising for advanced wearable sensing applications. 相似文献