Epidermal Electronics with Advanced Capabilities in Near-Field Communication
Epidermal Electronics with Advanced Capabilities in Near-Field Communication
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DOI：
10.1002/smll.201402495
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发表时间：
2015-02-25
期刊：
影响因子：
13.3
通讯作者：
Rogers, John A.
中科院分区：
文献类型：
--
作者：
Kim, Jeonghyun;Banks, Anthony;Rogers, John A.
我们展示了近场通信（NFC）电子产品的材料，力学设计和集成策略，这些电子产品具有可伸缩结构，超低模量和适应大应变变形的能力。这些属性允许与皮肤的无缝、适形接触，以及与任何标准的、支持NFC的智能手机的无线接口的同时能力，即使在极端变形下以及在正常日常活动之后/期间。这些系统的耦合机械和电磁响应的详细实验研究和理论建模建立了对其行为的基本理解。这些材料和设备架构具有在其他类型的射频（RF）电子系统中使用以及在身体的其他器官上使用的潜力。提供近场通信（NFC）功能的设备越来越多地出现在银行，[1-3]医疗，[1，2，4-7]军事，[5，6，8]运输[1，5，6]和娱乐行业的应用中。[1]事实上，最近的预测表明，到2014年底，将有超过1.5亿台移动的设备（即智能手机、笔记本电脑等）支持与各种NFC组件的接口，这些组件目前采用硬塑料或软塑料封装，设计用于独立形式或安装在各种物体上的贴纸。[1-3更近的实施例包括腕带、[4]手镯[7]和带，作为可穿戴设备的初始步骤。[8，10]在这里，我们报告了允许NFC设备以可拉伸的形式呈现的材料和机械设计，其物理特性类似于表皮的物理特性，直接与皮肤自然和不可渗透地整合。[10]薄的NFC芯片连接到低模量弹性体基板上的可伸缩射频（RF）天线，以产生安装在皮肤上的“表皮”系统，就像临时转移纹身一样。[10-16]谐振频率和机械性能的实验测量
We demonstrate materials, mechanics designs and integration strategies for near field communication (NFC) enabled electronics with ultrathin construction, ultralow modulus, and ability to accommodate large strain deformation. These attributes allow seamless, conformal contact with the skin and simultaneous capabilities for wireless interfaces to any standard, NFC enabled smartphone, even under extreme deformations and after/during normal daily activities. Detailed experimental studies and theoretical modeling of the coupled mechanical and electromagnetic responses of these systems establish foundational understanding of their behavior. These materials and device architectures have potential for utility in other types of radio frequency (RF) electronic systems and for use on other organs of the body. Devices that offer capabilities in near field communication (NFC) appear increasingly in applications that span the banking,[1–3] medical,[1, 2, 4–7] military,[5, 6, 8] transportation [1, 5, 6] and entertainment industries.[1] In fact, recent projections suggest that by the end of 2014, more than 150 million mobile devices (ie smartphones, laptops, etc) will support ability to interface to various NFC components, currently available in hard or flexible plastic packages and designed for use in free-standing forms or as stickers for mounting onto various objects.[1–3, 5–9] More recent embodiments include wristbands,[4] bracelets [7] and tapes, as initial steps to wearable devices.[8, 10] Here, we report materials and mechanics designs that allow NFC devices to be rendered in stretchable, ultrathin formats with physical properties that resemble those of the epidermis, for natural and impercetible integration directly with the skin.[10] Thin NFC die connect to stretchable radio frequency (RF) antennas on low modulus elastomer substrates, to yield,‘epidermal’systems that mount on the skin like temporary transfer tattoos.[10–16] Experimental measurements of the resonant frequency and mechanical