Transparent and flexible fingerprint sensor array with multiplexed detection of tactile pressure and skin temperature.

Transparent and flexible fingerprint sensor array with multiplexed detection of tactile pressure and skin temperature.
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DOI:
10.1038/s41467-018-04906-1
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发表时间:
2018-07-03
影响因子:
16.6
通讯作者:
Park JU
Park JU
中科院分区:
综合性期刊1区
文献类型:
--
作者:
An BW;Heo S;Ji S;Bien F;Park JU

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我们开发了一种透明和灵活的,电容式指纹传感器阵列与多路复用,同时检测触觉压力和手指皮肤温度的移动的智能设备。在我们的方法中,使用超长金属纳米纤维和更细的纳米线的混合纳米结构的网络形成为多功能传感器阵列的透明,柔性电极。这些传感器具有出色的光电性能和出色的抗机械弯曲的可靠性。该指纹传感器阵列具有高分辨率和良好的透明度。该传感器提供的电容变化比使用传统ITO电极的相同传感器图案的变化好约17倍。该具有混合电极的传感器也在高频下工作,其性能对来自移动的设备的各种噪声信号的退化可以忽略不计。此外,该指纹传感器阵列可以与所有透明形式的触觉压力传感器和皮肤温度传感器集成,以使得能够检测手指按压在显示器上。下一代移动的安全设备需要可以直接集成到显示器中的指纹传感器。在这里,Park等人展示了一种高度透明的多功能电容式指纹传感器阵列,可以同时检测触觉压力和手指皮肤温度。
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. Next-generation mobile security devices require fingerprint sensors that can be incorporated directly into the display. Here, Park et al. demonstrate a highly transparent, multifunctional capacitive fingerprint sensor array that simultaneously detects tactile pressure and finger skin temperature.
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