Reverse-offset printing(ROP)enables microscale patterning on flexible substrates,making it ideal for fabricating interdigital capacitive(IDC)sensors for atopic dermatitis(AD)monitoring.AD,characterized by skin dryness...Reverse-offset printing(ROP)enables microscale patterning on flexible substrates,making it ideal for fabricating interdigital capacitive(IDC)sensors for atopic dermatitis(AD)monitoring.AD,characterized by skin dryness and inflammation,demands precise hydration tracking.Tailoring IDC electrode gaps to 50µm concentrates the electric field within the stratum corneum(SC),enhancing sensitivity beyond the capabilities of traditional screen printing.Finite element modelling and ROP were employed to assess the impact of electrode geometry and encapsulation thickness on sensor performance.Findings indicate that 50µm electrodes with encapsulation layers under 10µm maintain high sensitivity and consistent operation.A clinical case study demonstrated the 50µm sensor’s ability to distinguish lesional from non-lesional skin.These results inform the optimization of encapsulation-performance balance and advance the design of wearable,high-resolution IDC sensors for continuous skin hydration monitoring in personalized dermatological care.展开更多
文摘Reverse-offset printing(ROP)enables microscale patterning on flexible substrates,making it ideal for fabricating interdigital capacitive(IDC)sensors for atopic dermatitis(AD)monitoring.AD,characterized by skin dryness and inflammation,demands precise hydration tracking.Tailoring IDC electrode gaps to 50µm concentrates the electric field within the stratum corneum(SC),enhancing sensitivity beyond the capabilities of traditional screen printing.Finite element modelling and ROP were employed to assess the impact of electrode geometry and encapsulation thickness on sensor performance.Findings indicate that 50µm electrodes with encapsulation layers under 10µm maintain high sensitivity and consistent operation.A clinical case study demonstrated the 50µm sensor’s ability to distinguish lesional from non-lesional skin.These results inform the optimization of encapsulation-performance balance and advance the design of wearable,high-resolution IDC sensors for continuous skin hydration monitoring in personalized dermatological care.
