A Highly Skin‐Conformal and Biodegradable Graphene‐Based Strain Sensor,Small Methods

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A Highly Skin‐Conformal and Biodegradable Graphene‐Based Strain Sensor
Small Methods ( IF 10.7 ) Pub Date : 2018-07-17 , DOI: 10.1002/smtd.201700374
Shu Wan ₁ , Zhihong Zhu ₁ , Kuibo Yin _{1,

2} , Shi Su _{1,

2} , Hengchang Bi _{1,

3} , Tao Xu ₁ , Hongtao Zhang ₁ , Zhihui Shi ₁ , Longbing He _{1,

2} , Litao Sun _{1,

2,

3}

Affiliation

For wearable sensors, realizing a strong and conformal contact with skin is essential to precisely detect human vital signals and enable human–machine interaction. Herein, a facile strategy is reported to fabricate a sensor with ultrahigh skin conformity by adopting a commercial make‐up accessory (nose film) as the substrate and graphene as the active materials. The wearable strain sensor can be pasted on human skin at the dermatoglyph level, and the commercial make‐up shows a high skin adhesion with a peel‐off strength of ≈29.4 N m⁻¹. The high adhesion as well as ultraconformity to skin results in a signal amplification of ≈14.2 times. Also, the sensor shows a similar stretchability (≈35%) to human skin (≈30%) in addition to maintaining an impressive performance with a high sensitivity and rapid response time. These characteristics are attractive for precisely monitoring human vital signals and in appliances with increased human–machine interaction. Besides, the sensor is biodegradable, being made from a nontoxic water‐soluble polymer. It is most likely that biodegradable materials will be increasingly attractive due to the potential environmental problem caused by traditional nonbiodegradable polymers.

中文翻译：

高度贴合皮肤且可生物降解的基于石墨烯的应变传感器

对于可穿戴传感器，实现与皮肤的牢固保形接触对于精确检测人的生命信号并实现人机交互至关重要。在此，据报道，一种简便的策略是通过采用商业化的化妆配件（鼻膜）作为基材，并采用石墨烯作为活性材料来制造具有超高皮肤贴合度的传感器。可穿戴式应变传感器可以粘贴在人体皮肤上，具有商业标志性外观，并具有高的皮肤附着力，剥离强度约为29.4 N m ^-1。高附着力以及对皮肤的超顺应性导致信号放大约14.2倍。此外，该传感器除了具有令人印象深刻的性能，高灵敏度和快速响应时间外，还显示出与人体皮肤（≈30％）相似的可拉伸性（≈35％）。这些特性对于精确监控人的生命信号以及在人机交互增加的设备中具有吸引力。此外，该传感器是可生物降解的，由无毒的水溶性聚合物制成。由于传统的不可生物降解的聚合物引起的潜在环境问题，可生物降解的材料极有可能会越来越具有吸引力。

更新日期：2018-07-17

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