5 years ago

Ultrasensitive Pressure Sensor Based on an Ultralight Sparkling Graphene Block

Ultrasensitive Pressure Sensor Based on an Ultralight Sparkling Graphene Block
Lingxiao Lv, Tong Xu, Liangti Qu, Panpan Zhang
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–1). Particularly, the SGB-based sensor reveals a record pressure sensitivity of 229.8 kPa–1, 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.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b07153

DOI: 10.1021/acsami.7b07153

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