近期《自然-通讯》发表的一篇论文Transparent and flexible fingerprint sensor array with multiplexed detection of tactile pressure and skin temperature介绍了制造智能手机集成的指纹传感器阵列的新策略，这些阵列可以同步检测触觉压力和手指皮肤温度。在智能手机屏幕上的演示表明，它们可以让用户将手指放在屏幕的任何位置进行身份识别，而不需要使用激活按钮。
摘要：We developed a transparent and flexible, capacitive fingerprint sensor array with multiplexed, simultaneous detection of tactile pressure and finger skin temperature for mobile smart devices. In our approach, networks of hybrid nanostructures using ultra-long metal nanofibers and finer nanowires were formed as transparent, flexible electrodes of a multifunctional sensor array. These sensors exhibited excellent optoelectronic properties and outstanding reliability against mechanical bending. This fingerprint sensor array has a high resolution with good transparency. This sensor offers a capacitance variation ~17 times better than the variation for the same sensor pattern using conventional ITO electrodes. This sensor with the hybrid electrode also operates at high frequencies with negligible degradation in its performance against various noise signals from mobile devices. Furthermore, this fingerprint sensor array can be integrated with all transparent forms of tactile pressure sensors and skin temperature sensors, to enable the detection of a finger pressing on the display.
