An imperceptible plastic electronic wrap.
An imperceptible plastic electronic wrap.
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DOI：
10.1002/adma.201403093
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发表时间：
2015-01-07
影响因子：
29.4
通讯作者：
Bauer, Siegfried
中科院分区：
文献类型：
--
作者：
Drack, Michael;Graz, Ingrid;Sekitani, Tsuyoshi;Someya, Takao;Kaltenbrunner, Martin;Bauer, Siegfried
超薄箔暂时附着在可重复使用的支撑物上(图1a)。这允许通过采用卷对卷制造方案来扩展所有后续处理步骤。厚度在微米范围内的超薄聚对苯二甲酸乙二酯(PET)和聚萘二甲酸乙二酯(PEN)箔可在商业上以低成本卷装用于箔电容器[22，23](图1b)。制造完成后，只需将箔从临时支撑件上剥离即可。我们的超薄电子膜仅重3 g/m2，漂浮在肥皂膜上(图1c，支持信息中的视频S1)，并与印刷电路板等复杂的3D对象紧密兼容(图1d)，创造了一种电子塑料厨房套。将缠绕材料一步转移到软材料上，如预拉伸弹性体，可产生功能混合，为高性能刚性岛可拉伸互连电子系统铺平道路。安装在这种弹性体和超薄箔复合材料上的表面贴装器件(SMD)LED的条带可以经受扭曲和拉伸，而其功能不会受到损害(图1e)。我们首先演示了在印刷电路板(图2a)、食品(图2b)和人体皮肤(图S1，辅助信息)上使用不可察觉的电子膜作为灵敏和符合要求的温度传感器。100纳米厚的金、铜、铝和银薄膜被热蒸发到1.4微米厚的PET薄膜上。极小的弯曲半径使传感器箔能够紧紧缠绕在印刷电路板的电子元件上，并在设备运行期间监测温度的指数上升和饱和(图2a)。放置在冷冻鱼包装上的薄膜传感器以惊人的精度测量鱼的完整解冻时间(超过15小时)(图2b)。在熔化过程中，传感器箔上会形成一层薄薄的水膜，这反映在温度记录过程中的噪声略有增加。然而，这些苛刻的条件并不影响测量的可靠性。人体皮肤上精确的时空温度映射是诊断的重要工具。[18]我们的传感器连接在鼻子上，跟踪一杯热茶和随后一杯冷水引起的皮肤温度变化(图S1，辅助信息)。我们的方法不需要微结构技术，是一种不需要超高空间分辨率的精确温度记录的低成本解决方案。有关所用金属薄膜电阻率的校准和温度系数的详细信息，请参见《辅助信息》中的图2。集成电路上、食品包装上和皮肤上的薄膜传感器温度记录与红外摄像机记录(图2a、b和支持信息中的图S1)显示出惊人的一致性，并增强了传感器作为低成本解决方案的潜力，用于消费电子产品调查、食品质量监测和一次性医疗贴片。电子设备正从附带的电器演变为一种无形的形式，可作为眼镜、纺织品[1]和医疗假体佩戴，[2]直接附着在皮肤[3]或心脏[4]和大脑等内部器官上，[5]在生物和电子设备之间建立无缝连接。可生物降解的、暂时性的和可食用的电子产品为医疗保健、食品和环境质量监测提供了更多的应用机会。柔性、顺应性、重量和柔软性将成为下一代智能电子设备的关键指标。超灵活的…
The ultrathin foil is temporarily adhered to a reusable support (Figure 1a). This allows all subsequent processing steps to be scalable by adopting a roll-to-roll fabrication scheme. Ultrathin poly (ethylene terephthalate)(PET) and poly (ethylene naphthalate)(PEN) foils with thickness in the micrometer range are commercially available at low cost in rolls for foil capacitors [22, 23](Figure 1 b). After fabrication, the foil is simply peeled from the temporary support. Weighing only 3 g/m 2, our ultrathin electronic foils float on soap films (Figure 1 c, and Video S1 in the Supporting Information), and intimately conform to complex 3D objects like printed circuit boards (Figure 1 d), creating a form of electronic plastic kitchen wrap. A one-step transfer process of the wrap to a soft material, like a pre-stretched elastomer, results in a functional hybrid that paves the way for high-performance rigid-island–stretchable-interconnect electronic systems. Strips with surfacemounted device (SMD) LEDs mounted on such a composite of elastomer and ultrathin foil survive twisting and stretching without having their functionality impaired (Figure 1 e). We first demonstrate the use of imperceptible electronic films as sensitive and compliant temperature sensors on printed circuit boards (Figure 2a), food items (Figure 2 b) and human skin (Figure S1, Supporting Information). 100-nm-thick films of gold, copper, aluminum, and silver are thermally evaporated onto flat 1.4-µm-thick PET foils. The extremely small bending radius allows the sensor foil to wrap tightly around the electronic components of the printed circuit board and to monitor the exponential rise and the saturation of the temperature during device operation (Figure 2 a). Placed on a package of frozen fish, the thin-film sensors measure the complete defrosting period of the fish (more than 15 h) with remarkable accuracy (Figure 2 b). A thin water film forms on the sensor foil during melting, which is reflected in a small increase of noise during the temperature recording. These harsh conditions, however, do not impair the reliability of the measurement. Precise spatio-temporal temperature mapping on the human skin is an important tool for diagnostics.[18] Attached to the nose, our sensors follow on-skin temperature changes induced by drinking a cup of hot tea and subsequently a glass of cold water (Figure S1, Supporting Information). Our approach does not require microstructuring techniques and is a low-cost solution for accurate temperature recording where ultrahigh spatial resolution is not needed. Details of the calibration and the temperature coefficients of the resistivity of the thin metal films used are given in Figure S2 in the Supporting Information. The thin-film-sensor temperature recordings on the integrated electronic circuit, on the food package, and on-skin show remarkable agreement with infrared camera recordings (Figure 2 a, b and Figure S1 in the Supporting Information) and fortify the sensor’s potential as a low-cost solution for consumer electronics survey, food quality monitoring, and disposable patches in healthcare.Electronics is evolving from accompanying appliances to an imperceptible form, wearable as glasses, textiles [1] and medical prostheses,[2] directly adherent to the skin [3] or inner organs like the heart [4] and the brain,[5] establishing a seamless link between living beings and electronic devices. Biodegradable,[6, 7] transient [8] and edible [9–11] forms of electronics provide further opportunities for applications in healthcare, food, and environmental quality monitoring.[12–14] Flexibility, compliance, weight, and softness will turn out to be key metrics in next-generation smart electronic appliances. Ultraflexible …
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影响因子：
41.2
作者：
通讯作者：
--
影响因子：
1.6
作者：
Jablonski, M.;Bossuyt, F.;de Vries, H.
通讯作者：
de Vries, H.
影响因子：
56.9
作者：
Keplinger, Christoph;Sun, Jeong-Yun;Suo, Zhigang
通讯作者：
Suo, Zhigang
DOI：
10.1016/j.ijsolstr.2014.05.012
发表时间：
2014-09-01
影响因子：
3.6
作者：
Cheng, Huanyu;Zhang, Yihui;Huang, Yonggang
通讯作者：
Huang, Yonggang
影响因子：
3.9
作者：
Robinson, Adam P.;Minev, Ivan;Lacour, Stephanie P.
通讯作者：
Lacour, Stephanie P.