Ecoflex is widely used in bioelectronics due to its outstanding properties of low modulus and large stretchability.For its use as an encapsulation layer in multi-channel wearable devices,a patterning procedure is esse...Ecoflex is widely used in bioelectronics due to its outstanding properties of low modulus and large stretchability.For its use as an encapsulation layer in multi-channel wearable devices,a patterning procedure is essential.However,conventional patterning strategies for Ecoflex,such as soft lithography,punching,and laser ablation,lack sufficient quality and process compatibility.To address this,we propose a process-compatible method of patterning Ecoflex by developing Photo-patternable Ecoflex(PPE).The PPE layer,used as an encapsulation layer,effectively dissipates strain energy at homogeneous interfaces,resulting in a 50%increase in electrical conductance under 250%strain.Using PPE,we fabricated intrinsically stretchable multi-sensors that monitor bio-signals like glucose,lactate,pH,and humidity in sweat.These sensors maintain durable sensitivity under strain up to 50%and for 1000 cycles at 20%strain.Finally,we mounted these stretchable multi-chemical sensors on an arm to monitor glucose and lactate levels in sweat.展开更多
基金supported by the Wearable Platform Materials Technology Center(WMC)funded by the National Research Foundation of Korea(NRF)grant by the Korea Government(MSIT)(NRF-2022R1A5A6000846,NRF-2021M3D1A2049869,NRF-2020M3H4A3106405)supported by Nano Material Technology Development Program(2021M3H4A1A04092879)through the National Research Foundation of Korea funded by the Ministry of Science and ICT.
文摘Ecoflex is widely used in bioelectronics due to its outstanding properties of low modulus and large stretchability.For its use as an encapsulation layer in multi-channel wearable devices,a patterning procedure is essential.However,conventional patterning strategies for Ecoflex,such as soft lithography,punching,and laser ablation,lack sufficient quality and process compatibility.To address this,we propose a process-compatible method of patterning Ecoflex by developing Photo-patternable Ecoflex(PPE).The PPE layer,used as an encapsulation layer,effectively dissipates strain energy at homogeneous interfaces,resulting in a 50%increase in electrical conductance under 250%strain.Using PPE,we fabricated intrinsically stretchable multi-sensors that monitor bio-signals like glucose,lactate,pH,and humidity in sweat.These sensors maintain durable sensitivity under strain up to 50%and for 1000 cycles at 20%strain.Finally,we mounted these stretchable multi-chemical sensors on an arm to monitor glucose and lactate levels in sweat.
