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2018 International Flexible Electronics Technology Conference (IFETC)最新文献

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Printed Sensors for Building Management 用于建筑物管理的印刷传感器
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583970
Zhiyi Zhang, H. Ding, S. Alem, R. Griffin, Y. Tao, G. Xiao, A. Pardasani, Henry Xu, C. Arsenault, G. Newsham
A high density wireless environmental sensor network has great potential to provide enhanced control options to building automation systems to reduce energy consumption and thus GHG emissions. In this work, we have developed light sensors and temperature sensors with solar energy harvesting and wireless communication capability for the application. The hybrid sensors are built by integrating printed sensing elements with EnOcean’s technology that provides solar energy harvesting and wireless transmission functions. The light sensing and temperature sensing elements were printed on flexible PET films using organic photosensitive materials and particle-filled polymer inks developed by our team. The resulting hybrid sensors were tested and shown to meet design specifications. The light sensors have been installed in a full-scale office test bed for demonstrating efficient light control.
高密度无线环境传感器网络具有巨大的潜力,可以为楼宇自动化系统提供增强的控制选项,以减少能源消耗,从而减少温室气体排放。在这项工作中,我们开发了具有太阳能收集和无线通信能力的光传感器和温度传感器。混合传感器是通过将印刷传感元件与EnOcean的技术集成而成的,该技术提供太阳能收集和无线传输功能。光感和温度感元件是用我们团队开发的有机光敏材料和颗粒填充聚合物油墨印刷在柔性PET薄膜上的。测试结果表明,混合传感器符合设计要求。光传感器已安装在一个全尺寸的办公室测试台上,以演示有效的光控制。
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引用次数: 1
Inkjet-Printing of Methylammonium Lead Trihalide Perovskite-Based Flexible Optoelectronic Devices 三卤化铅甲基铵钙钛矿基柔性光电器件的喷墨打印
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583950
C. Trudeau, M. Bolduc, P. Beaupré, I. Ka, I. Asuo, S. Cloutier
In recent years, metal-organic methylammonium lead trihalide perovskite formulations have been extensively studied and employed as active materials in a range of photovoltaic and photodetector devices. Perovskite-based materials have gain popularity due to their unique optoelectronic properties which allow for simple device architecture to reach high energy harvesting efficiencies and responsivities over the whole visible light spectrum. These materials offer an advantage over conventional semiconductor materials and fabrication techniques as they do not require high temperatures or vacuum environments which are beneficial for fabricating devices on flexible, heat sensitive substrates.As the demand for low-cost and large-area flexible electronics increases, in part due to the rise of the internet of things (IoT), new routes in additive device fabrication techniques and advances inprintable materials are required. In this work, digital inkjet-printing in ambient atmosphere is proposed as a fabrication pathway for perovskite based flexible photodetectors in thin-film device architectures. The devices consisting of a printed methylammonium lead trihalide perovskite layer and a printed Spiro-OMeTAD hole transport layer fabricated on indium tin oxide (ITO) coated Polyethylene terephthalate (PET) flexible substrates are shown to have an average responsivity at 0 V bias of 7.7 μA/Win the range of 400 nm to 850 nm which is increased to 0.53 mA/Wand 1.17 mA/W when biases of 0.5 V and 1.0 V are applied, respectively.
近年来,金属-有机甲基铵三卤化铅钙钛矿配方作为活性材料被广泛研究并应用于一系列光伏和光电探测器器件中。钙钛矿基材料由于其独特的光电特性而受到欢迎,这些特性允许简单的器件架构在整个可见光光谱中达到高能量收集效率和响应性。这些材料提供了优于传统半导体材料和制造技术的优势,因为它们不需要高温或真空环境,这有利于在柔性热敏基板上制造器件。随着对低成本和大面积柔性电子产品的需求增加,部分原因是由于物联网(IoT)的兴起,增材设备制造技术的新路线和不可打印材料的进步是必要的。在这项工作中,提出了在环境气氛中数字喷墨印刷作为薄膜器件结构中基于钙钛矿的柔性光电探测器的制造途径。在氧化铟锡(ITO)包覆聚对苯二甲酸乙酯(PET)柔性衬底上制备的印刷三卤化铅甲基铵钙钛矿层和印刷Spiro-OMeTAD空穴传输层在400 ~ 850 nm范围内的平均响应率在0 V偏置下为7.7 μA/Win,在0.5 V和1.0 V偏置下分别增加到0.53 mA/W和1.17 mA/W。
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引用次数: 2
Deformable User Interfaces: Using Flexible Electronics for Human Computer Interaction 可变形用户界面:使用柔性电子技术进行人机交互
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583864
A. Girouard, Alexander Keith Eady
Deformable inputs offer users the ability to physically manipulate a device for system interaction. We combine flexible electronic technologies with human computer interaction to study how changing the form factor of digital devices can offer new interaction techniques to users. We introduce our research on deformable user interfaces by discussing bend gestures as a source of input, presenting our process to rapidly prototype flexible devices, and demonstrate three deformable user interfaces: bend passwords, bend for mobile games, and bend for vision impaired users. We show how flexible devices and deformable interactions can improve how we interact with our devices.
可变形输入为用户提供了物理操作设备进行系统交互的能力。我们将灵活的电子技术与人机交互相结合,研究改变数字设备的外形因素如何为用户提供新的交互技术。我们通过讨论弯曲手势作为输入源来介绍我们对可变形用户界面的研究,展示我们快速原型化柔性设备的过程,并演示三种可变形用户界面:弯曲密码,弯曲手机游戏和弯曲视力受损用户。我们展示了灵活的设备和可变形的交互如何改善我们与设备的交互方式。
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引用次数: 2
Toward Growable Robot : Exploring and Integrating Flexible – Biological Matter with Electronics 迈向可生长机器人:探索和整合柔性生物材料与电子学
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8584034
Pat Pataranutaporn, Jaime Sanchez de la Vega, Abhik Chowdhury, Audrey Ng, Galina Mihaleva
The direction of recent research suggests the convergence of digital and biological systems, where researchers designed and engineered technology that share many of the aspects of living organisms. We explore a step towards “growable robotics”, a type of robotic system that has the ability to self-grow either a part of or its whole body into a functional shape with minimal help from the external system. We propose the application of microbial cellulose, as a biological exoskeleton of the electrical system with renewable, self-healing, and shape changing properties. We demonstrate the process of creating the growable robot by prototyping a simple rover inspired by NASA folded origami mechanisms. Finally, we analyze the potential applications based on the properties of the material and suggest the future directions in growable and biological augmented robotics.
最近的研究方向表明,数字和生物系统的融合,研究人员设计和工程技术,共享许多方面的生物体。我们探索了“可生长机器人”的一步,这是一种机器人系统,它有能力在最小的外部系统帮助下,将其身体的一部分或整个自我生长成功能形状。我们建议应用微生物纤维素作为电力系统的生物外骨骼,具有可再生、自我修复和形状变化的特性。我们通过一个简单的漫游者原型来演示创造可生长机器人的过程,这个漫游者的灵感来自于美国宇航局的折叠折纸机制。最后,根据材料的性质分析了其潜在的应用前景,并提出了可生长和生物增强机器人技术的发展方向。
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引用次数: 17
R2R Gravure as an Additive Manufacturing Technology for the Fabrication of Large Area Flexible Displays and Inexpensive NFC Sensor Tags R2R凹印作为一种增材制造技术,用于制造大面积柔性显示器和廉价的NFC传感器标签
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583847
Gyoujin Cho
Over the last decade, roll-to-roll (R2R) printing has been pursued with the expectation of developing a commercially viable, high throughput technology to manufacture flexible, disposable and inexpensive printed electronics. However, in recent years, pessimism has emerged due to the barriers faced when attempting to fabricate and integrate thin film transistors
在过去的十年中,卷对卷(R2R)印刷一直在追求开发一种商业上可行的高通量技术,以制造柔性,一次性和廉价的印刷电子产品。然而,近年来,由于试图制造和集成薄膜晶体管时面临的障碍,悲观情绪出现了
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引用次数: 1
A printed physiological monitoring module in e-textile 电子纺织品中打印的生理监测模块
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583978
Po‐Chun Hsu, Chien-Lung Shen, Fen-Ling Chen, Hou-Sheng Huang, Wei-Chung Wang, T. Huang
The two crucial components of physiological monitoring e-textile are conductive fabric electrodes and monitoring controller and have been successfully replaced by the printed electrodes made of conductive ink and FPCB in this research. The novel design of the printed electronic embedded textile technology reaches the physiological monitoring e-textile to a higher tendency of the washable, flexible, stretchable and thin characteristic of the pure textile.
生理监测电子纺织品的两个关键部件是导电织物电极和监测控制器,在本研究中已成功地被导电油墨和FPCB制成的印刷电极所取代。新颖设计的印刷电子嵌入式纺织品技术,使生理监测电子纺织品向具有纯纺织品的耐洗、柔韧、可拉伸、轻薄等特点的更高方向发展。
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引用次数: 4
A Proposed Prototype for Cattle Monitoring System using RFID 一种基于射频识别技术的牛监测系统原型
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583969
C. Jebali, A. Kouki
In some situations, autonomous monitoring of cattle entering a trailer is highly required. However, experimenting in real environment has many difficulties and affects the accuracy of data repeatability as it is difficult to control the cattle behavior. In real environment, an RFID system is used to monitor the cattle entering and getting out of the trailer. This introduces some challenges in terms of interference caused by cattle movement inside a metallic frame. In this study we propose a prototype to emulate the real system in lab environment, so interference issues can be accurately studied and mitigated. Moreover, using the prototype insures quick experimentation with minimum cost, saving time, and eliminating animal exhaustion.
在某些情况下,高度需要对进入拖车的牛进行自动监控。然而,在真实环境下进行实验有很多困难,并且由于牛的行为难以控制,影响了数据可重复性的准确性。在真实环境中,使用RFID系统监控牛进出拖车。这就引入了一些由于牛在金属框架内运动而引起的干扰方面的挑战。在本研究中,我们提出了一个在实验室环境中模拟真实系统的原型,因此可以准确地研究和减轻干扰问题。此外,使用原型确保以最小的成本快速实验,节省时间,并消除动物疲劳。
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引用次数: 0
Printing Contractive Silver Conductive Inks Using Interface Interactions to Overcome Dewetting 利用界面相互作用克服脱湿的印刷收缩银导电油墨
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8584009
Kevin Ton, T. Chu, Zhiyi Zhang, Y. Tao
Surface energy incompatibility between ink and substrate is a significant obstacle for inkjet printing of electronic components, causing printed lines to dewet and break apart. In this work it was demonstrated that smooth, continuous silver lines could be printed via control of inksubstrate interactions, despite the tendency of the ink to dewet from the substrate. The silver lines were printed using drop-on-demand inkjet printing of silver nanoparticle ink onto un-crosslinked SU-8 coated polyethylene terephthalate (PET). The lines were subsequently heated to control dewetting and cause contraction from 60 μm to 18 μm. The SU-8 film underneath the silver line was dissolved and redistributed and formed a ridged concave structure that prevented the lines from bulging and breaking apart.
油墨与承印物之间的表面能不相容是电子元件喷墨印刷的一个重要障碍,它会导致印刷线条湿化和断裂。在这项工作中,它证明了平滑的,连续的银线可以通过控制油墨与基材的相互作用来印刷,尽管油墨有从基材上湿化的趋势。银线是使用银纳米颗粒墨水滴按需喷墨打印到非交联SU-8涂层的聚对苯二甲酸乙二醇酯(PET)上的。随后加热线条以控制脱湿,并使线条从60 μm收缩到18 μm。银线下面的SU-8薄膜被溶解并重新分布,形成一个脊状凹结构,防止银线膨胀和断裂。
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引用次数: 2
Fully Printed Flexible and Reconfigurable Antenna With Novel Phase Change VO2 Ink Based Switch 全印刷柔性和可重构天线与新型相变VO2墨水开关
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583904
M. Vaseem, Z. Su, Shuai Yang, A. Shamim
Vanadium dioxide (VO2) is identified as an attractive phase change material which can be used for switchable or reconfigurable RF components. At present, VO2 is deposited by expensive and complex thin film micro-fabrication techniques. With the surge in low cost, additively manufactured or printed components, it will be beneficial to print phase change materials or switches as well. However, these kinds of functional inks are not available commercially. In this work, we present, for the first time VO2 based ink that changes its conductive properties based on temperature. Precisely, it displays insulating properties at room temperature (resistance of ~1.2KΩ in the off-state), but becomes conductive when heated around 70°C (resistance of <10Ω in the on-state). Here, we demonstrate a fully printed thermally controlled reconfigurable antenna based on VO2 ink and a custom silver-organo-complex (SOC) ink supported on flexible kapton substrate. In a planar inversed F antenna (PIFA) configuration, when the switch is in the OFF state, the antenna operates at 3.5 GHz band for 5G communications, and when it is in the ON state, it operates at 2.4 GHz band suitable for WiFi, Bluetooth or Zigbee applications. The antenna performance is assessed in different bending conditions where it achieved a maximum gain of ~2 dBi at 3.2GHz with concave bending position.
二氧化钒(VO2)被认为是一种有吸引力的相变材料,可用于可切换或可重构的射频元件。目前,VO2是通过昂贵而复杂的薄膜微加工技术沉积的。随着低成本、增材制造或打印组件的激增,打印相变材料或开关也将是有益的。然而,这些类型的功能性油墨在商业上是不可用的。在这项工作中,我们首次提出了根据温度改变其导电性能的VO2基油墨。准确地说,它在室温下显示绝缘性能(关闭状态下电阻为~1.2KΩ),但在加热到70°C左右时变得导电(导通状态下电阻<10Ω)。在这里,我们展示了一种基于VO2墨水和基于柔性卡普顿衬底的定制银有机络合物(SOC)墨水的完全印刷热控可重构天线。在平面反F天线(PIFA)配置中,当开关处于OFF状态时,天线工作在3.5 GHz频段,适用于5G通信,当开关处于ON状态时,天线工作在2.4 GHz频段,适用于WiFi、蓝牙或Zigbee应用。在不同的弯曲条件下对天线的性能进行了评估,在3.2GHz的凹弯曲位置下,天线的最大增益达到了~2 dBi。
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引用次数: 5
Carbon Based Electrode for Wearable Biosignal Monitoring Patch 用于可穿戴生物信号监测贴片的碳基电极
Pub Date : 2018-08-01 DOI: 10.1109/IFETC.2018.8583893
Ha-Chul Jung, Dahye Kwon, Seung-A Lee, J. Ahn, A. Kim, Young-Jin Kim, Jinhee Moon
We fabricated a novel patch type flexible dry electrode for long-term bio signal monitoring by mixing carbon nanofibers (CNFs) in biocompatible-elastomer (MED6015). The CNFs are high conductivity, low price and easy dispersed in elastomer uniformly related with CNTs (Carbon nanotubes). The fabricated CNFs electrodes are coated with sticky elastomer (MG7-9850) to attach on skins without any other adhesive. The mixing ratio of CNFs and elastomer is diverse to compare electrical and mechanical characteristics. ECG (Electrocardiography) signal quality, sweat effects and motion effects are evaluated and the fabricated electrode was shown good quality of signals and tolerant from both effects. Also the electrode was shown to be biocompatible from biocompatibility test. These electrodes could be used for the long-term measurement of bio potential monitoring and wearable devices.
我们将碳纳米纤维(CNFs)混合在生物相容性弹性体(MED6015)中,制备了一种用于长期生物信号监测的新型贴片型柔性干电极。碳纳米管具有导电性好、价格低廉、易于分散于弹性体中等特点。制备的CNFs电极涂有粘性弹性体(m7 -9850),可以附着在皮肤上,不需要任何其他粘合剂。CNFs和弹性体的混合比例是不同的,以比较电学和力学特性。对心电图信号质量、汗液效应和运动效应进行了评价,结果表明该电极具有良好的信号质量和抗汗、运动效应的能力。生物相容性试验表明,该电极具有良好的生物相容性。这些电极可用于生物电位监测和可穿戴设备的长期测量。
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引用次数: 3
期刊
2018 International Flexible Electronics Technology Conference (IFETC)
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