Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology , Beijng 100081, P. R. China.
ACS Appl Mater Interfaces. 2017 Jul 12;9(27):22885-22892. doi: 10.1021/acsami.7b07153. Epub 2017 Jun 30.
Herein, we develop a supersensitive pressure sensor based on a fully air-bubbled ultralight graphene block through a simple sparkling strategy. The obtained sparkling graphene block (SGB) exhibits excellent elasticity even at 95% compressive strain and rebounds a steel ball with an ultrafast recovery speed (∼1085 mm s). Particularly, the SGB-based sensor reveals a record pressure sensitivity of 229.8 kPa, much higher than other graphene materials, because of the highly cavity-branched internal structure. Impressively, the pressure sensor can detect the extremely gentle pressures even beyond the real human skin and hence are promising for ultrasensitive sensing applications.
在此，我们通过一种简单的火花策略，开发了一种基于完全气泡化的超轻石墨烯块的超高灵敏压力传感器。所得到的火花化石墨烯块（SGB）表现出优异的弹性，即使在 95%的压缩应变下也能回弹，并且具有超快的恢复速度（约 1085 毫米/秒）。特别地，基于 SGB 的传感器显示出创纪录的 229.8 kPa 的压力灵敏度，远高于其他石墨烯材料，这是由于其高度分支的内部结构。令人印象深刻的是，该压力传感器甚至可以检测到超出真实人体皮肤的极其微弱的压力，因此有望用于超灵敏传感应用。
