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Byunggeon Park
Graduate School of Mechanical Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Korea

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Short Biography

Byung-geon Park received his B.S and M.S. degree in mechanical engineering from Pusan National University. He is Ph.D course student in mechanical engineering from Pusan National University and works at Korea Institute of Industrial Technology. His research interests include nano/micro-fabrication, electrophoretic deposition, and sensors.

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Journal article
Published: 08 March 2021 in Polymers
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Highly flexible and compressible porous polyurethane (PU) structures have effectively been applied in capacitive pressure sensors because of the good elastic properties of the PU structures. However, PU porous structure-based pressure sensors have been limited in practical applications owing to their low durability during pressure cycling. Herein, we report a flexible pressure sensor based on a three-dimensional porous structure with notable durability at a compressive pressure of 500 kPa facilitated by the use of a shape memory polymer (SMP). The SMP porous structure was fabricated using a sugar templating process and capillary effect. The use of the SMP resulted in the maintenance of the sensing performance for 100 cycles at 500 kPa; the SMP can restore its original shape within 30 s of heating at 80 °C. The pressure sensor based on the SMP exhibited a higher sensitivity of 0.0223 kPa−1 than a typical PU-based sensor and displayed excellent sensing performance in terms of stability, response time, and hysteresis. Additionally, the proposed sensor was used to detect shoe insole pressures in real time and exhibited remarkable durability and motion differentiation.

ACS Style

Byunggeon Park; Young Jung; Jong Ko; Jinhyoung Park; Hanchul Cho. Self-Restoring Capacitive Pressure Sensor Based on Three-Dimensional Porous Structure and Shape Memory Polymer. Polymers 2021, 13, 824 .

AMA Style

Byunggeon Park, Young Jung, Jong Ko, Jinhyoung Park, Hanchul Cho. Self-Restoring Capacitive Pressure Sensor Based on Three-Dimensional Porous Structure and Shape Memory Polymer. Polymers. 2021; 13 (5):824.

Chicago/Turabian Style

Byunggeon Park; Young Jung; Jong Ko; Jinhyoung Park; Hanchul Cho. 2021. "Self-Restoring Capacitive Pressure Sensor Based on Three-Dimensional Porous Structure and Shape Memory Polymer." Polymers 13, no. 5: 824.

Journal article
Published: 24 June 2020 in Polymers
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In recent times, polymer-based flexible pressure sensors have been attracting a lot of attention because of their various applications. A highly sensitive and flexible sensor is suggested, capable of being attached to the human body, based on a three-dimensional dielectric elastomeric structure of polydimethylsiloxane (PDMS) and microsphere composite. This sensor has maximal porosity due to macropores created by sacrificial layer grains and micropores generated by microspheres pre-mixed with PDMS, allowing it to operate at a wider pressure range (~150 kPa) while maintaining a sensitivity (of 0.124 kPa−1 in a range of 0~ 15 kPa) better than in previous studies. The maximized pores can cause deformation in the structure, allowing for the detection of small changes in pressure. In addition to exhibiting a fast rise time (~167 ms) and fall time (~117 ms), as well as excellent reproducibility, the fabricated pressure sensor exhibits reliability in its response to repeated mechanical stimuli (2.5 kPa, 1,000 cycles). As an application, we develop a wearable device for monitoring repeated tiny motions, such as the pulse on the human neck and swallowing at the Adam’s apple. This sensory device is also used to detect movements in the index finger and to monitor an insole system in real-time.

ACS Style

Young Jung; Wookjin Lee; Kyungkuk Jung; Byunggeon Park; Jinhyoung Park; Jongsoo Ko; Hanchul Cho. A Highly Sensitive and Flexible Capacitive Pressure Sensor Based on a Porous Three-Dimensional PDMS/Microsphere Composite. Polymers 2020, 12, 1412 .

AMA Style

Young Jung, Wookjin Lee, Kyungkuk Jung, Byunggeon Park, Jinhyoung Park, Jongsoo Ko, Hanchul Cho. A Highly Sensitive and Flexible Capacitive Pressure Sensor Based on a Porous Three-Dimensional PDMS/Microsphere Composite. Polymers. 2020; 12 (6):1412.

Chicago/Turabian Style

Young Jung; Wookjin Lee; Kyungkuk Jung; Byunggeon Park; Jinhyoung Park; Jongsoo Ko; Hanchul Cho. 2020. "A Highly Sensitive and Flexible Capacitive Pressure Sensor Based on a Porous Three-Dimensional PDMS/Microsphere Composite." Polymers 12, no. 6: 1412.