Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.; Department of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.; Electronics Laboratory, Swiss Federal Institute of Technology, Zurich 8092, Switzerland.
Sci Adv. 2016 Aug 3;2(8):e1600418. doi: 10.1126/sciadv.1600418. eCollection 2016 Aug.
Recent advances in materials, mechanics, and electronic device design are rapidly establishing the foundations for health monitoring technologies that have "skin-like" properties, with options in chronic (weeks) integration with the epidermis. The resulting capabilities in physiological sensing greatly exceed those possible with conventional hard electronic systems, such as those found in wrist-mounted wearables, because of the intimate skin interface. However, most examples of such emerging classes of devices require batteries and/or hard-wired connections to enable operation. The work reported here introduces active optoelectronic systems that function without batteries and in an entirely wireless mode, with examples in thin, stretchable platforms designed for multiwavelength optical characterization of the skin. Magnetic inductive coupling and near-field communication (NFC) schemes deliver power to multicolored light-emitting diodes and extract digital data from integrated photodetectors in ways that are compatible with standard NFC-enabled platforms, such as smartphones and tablet computers. Examples in the monitoring of heart rate and temporal dynamics of arterial blood flow, in quantifying tissue oxygenation and ultraviolet dosimetry, and in performing four-color spectroscopic evaluation of the skin demonstrate the versatility of these concepts. The results have potential relevance in both hospital care and at-home diagnostics.
近年来，材料、力学和电子设备设计方面的进展正在迅速为具有“类皮肤”特性的健康监测技术奠定基础，这些技术可以在表皮上进行慢性（数周）集成。由于与皮肤的紧密界面，这种生理感应的能力大大超过了传统的硬性电子系统（如腕戴式可穿戴设备中的系统）所能实现的能力。然而，这类新兴设备的大多数示例都需要电池和/或硬连线连接才能运行。这里报告的工作介绍了无需电池且完全无线工作的有源光电系统，其示例是为了对皮肤进行多波长光学特性进行设计的薄型、可拉伸平台。磁感应耦合和近场通信（NFC）方案以与智能手机和平板电脑等标准 NFC 兼容平台兼容的方式向多色发光二极管供电，并从集成光电探测器中提取数字数据。在监测心率和动脉血流的时间动态、量化组织氧合和紫外线剂量以及对皮肤进行四色光谱评估方面的示例证明了这些概念的多功能性。这些结果在医院护理和家庭诊断中都具有潜在的相关性。
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