Details

Autor(en) / Beteiligte

• Lee, Bo-Yeon
• Kim, Jiyoon
• Kim, Hyungjin
• Kim, Chiwoo
• Lee, Sin-Doo

Titel

Low-cost flexible pressure sensor based on dielectric elastomer film with micro-pores

Ist Teil von

• Sensors and actuators. A. Physical., 2016-04, Vol.240, p.103-109

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •A pressure sensor based on a porous elastomer film exhibits the relatively high sensitivity in the low pressure region and the fast response.•Uniform dispersion of micro-pores was achieved using a simple and low-cost method through the phase separation between the elastomer medium and water.•A flexible pressure sensor is applicable for ultra-sensitive e-skin and highly sensitive touch screen devices. We developed a low-cost flexible pressure sensor based on an elastomer film with uniformly distributed micro-pores as a dielectric layer. The dispersion of the micro-pores in the elastomer film results from the phase separation between a prepolymer material and deionized water to the elastomer, followed by the subsequent evaporation of the solvent within the polymer matrix after polymerization. Owing to the enhanced deformability by the pore structures, the relatively high sensitivity of 1.18kPa−1 in the low pressure (<0.02kPa) as well as the fast response time of 150ms was achieved. The sensitivity was found to primarily vary with the porosity of the elastomer film. Due to the highly elastic and flexible features of the porous film fabricated in a simple way, our pressure sensor is applicable for advanced touch panels with more human-friendly interfaces and skin sensors that allow the detection of a small change in pressure.