Frederick Seitz Materials Research Laboratory, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Biointerphases. 2012 Dec;7(1-4):52. doi: 10.1007/s13758-012-0052-8. Epub 2012 Aug 23.
We present the design and use of an ultrathin, stretchable sensor system capable of conformal lamination onto the skin, for precision measurement and spatial mapping of levels of hydration. This device, which we refer to as a class of 'epidermal electronics' due to its 'skin-like' construction and mode of intimate integration with the body, contains miniaturized arrays of impedance-measurement electrodes arranged in a differential configuration to compensate for common-mode disturbances. Experimental results obtained with different frequencies and sensor geometries demonstrate excellent precision and accuracy, as benchmarked against conventional, commercial devices. The reversible, non-invasive soft contact of this device with the skin makes its operation appealing for applications ranging from skin care, to athletic monitoring to health/wellness assessment.
我们提出了一种超薄、可拉伸的传感器系统的设计和使用方法，该系统能够贴合皮肤，用于精确测量和空间映射皮肤的水分水平。由于其“类皮肤”的结构和与身体紧密集成的方式，我们将这种设备称为“表皮电子学”的一类，其中包含排列成差分配置的微型阻抗测量电极阵列，以补偿共模干扰。使用不同频率和传感器几何形状获得的实验结果证明了其具有出色的精度和准确性，可以与传统的商业设备相媲美。该设备与皮肤的可逆、非侵入性软接触使其在从皮肤护理到运动监测再到健康/健康评估等应用中具有吸引力。
