NANON-01A on the paper for Gold Nanomesh Conductors for Wearable Sensors

2020-8-17

Our device was introduced in a paper on interconnected hot-pressed gold nanomesh conductors for wearable sensors!

If you are interested, please visit the following site.

https://pubs.acs.org/doi/full/10.1021/acsanm.9b02514

(Abstract)

We report the reduction in the wire resistance of gold nanomesh electrodes caused by interconnecting mesh electrodes. The porous-structured electrodes show high resistance because of the high junction resistance between electrodes. For the wiring of wearable sensors, the resistance of conductive wiring needs to be minimal. Therefore, it is necessary to reduce the resistance of nanomesh conductors by interconnecting electrodes. We fabricated the interconnected nanomesh conductors in the following steps. We heat pressed electrospun poly(vinyl alcohol) (PVA) fiber sheets at 180 °C (near the melting point of PVA), and then deposited the gold layer. We attached the nanomesh conductors to a target substrate by dissolving the PVA layer with spraying water. The electrodes were electrically connected to each other, which decreased the wire resistance by 76% and the sheet resistance from 3.18 to 1.27 Ω/sq. Furthermore, the interconnected structures improved stretchability of nanomesh conductors from 25 to 80%. The decreased resistance helps operate wearable devices by maintaining the same electrical properties when the wire length is increased.

下述论文中报道了本公司的静电纺丝设备

『Interconnected Heat-Press-Treated Gold Nanomesh Conductors for Wearable Sensors』

感兴趣的朋友可以通过https://pubs.acs.org/doi/full/10.1021/acsanm.9b02514阅览.

＜概要＞

报告了由于网状电极的相互连接,金纳米网状电极的电线电阻降低的新闻。

按照下面的步骤，制造了相互连接的纳米网状物导体。

将电纺聚乙烯醇（PVA）纤维在180°C（接近PVA熔点）下加热压好，然后沉积于金层。通过喷雾水溶解PVA层，将纳米网状导体安装在目标基板上。电极之间通过电连接，线电阻降低了76%，片电阻从3.18Ω/sq降低到1.27Ω/sq。并且互连结构使纳米网导体的拉伸性能从25%提高到80%。

电阻减少的话，即使电线长度增加也会维持相同的电气特性，因此有助于操作可穿戴设备。

正在进行利用胶原蛋白、透明质酸来纺制纳米纤维的研究。

・使用芯鞘式喷头的方法

利用芯鞘喷头，然后使用以胶原蛋白和透明质酸为基础的水溶液做为芯材，用PVP等合成树脂水溶液做为鞘材，来纺制芯鞘式纳米纤维。

关于骨胶原，由于纱后的芯鞘式纤维用弱碱性水溶液浸泡处理，所以鞘侧会被除去，能取出的是只有凝胶化的胶原蛋白纳米纤维膜。

透明质酸的情况下，用弱酸性乙醇水溶液等进行浸渍处理，同样可以提取凝胶化的透明质酸的单独纤维。

引用：https ://www.nature.com/articles/s41598-018-24700-9

日本专利、专利公报、“水凝胶纤维的制造方法”专利第6521738号

・利用合成树脂的方法

制作胶原蛋白、透明质酸和合成树脂的混合溶液，可以得到一条复合纤维。

混合树脂多是使用PEO和PVA等生物相容性高的树脂。