Abstract
Epidermal electronic sensors (EESs) possess great advantages in the real-time and enduring monitoring of human vital information compared to the traditional medical device for intimately making contact with human skin. Skin strain is a significant and effective routine to monitor motion, heart rate, wrist pulse, and skin growth in wound healing. In this paper, a novel skin sensor combined with a ternary conductive nanocomposite (Carbon black (CB)/Decamethylcyclopentasiloxane (D5)/Silbione) and a two-stage serpentine connector is designed and fabricated to monitor skin strain. The ultrasoft (~2 kPa) and adhesive properties of the ternary conductive nanocomposite ensure the capacity of the EES to intimately couple with human skin in order to improve accuracy with a relative error of 3.39% at strain 50% as well as a large strain range (0~50%) and gauge factor (GF ~2.5). The millimeter scale EES (~5 mm × 1 mm × 100 μm), based on the micro-nano fabrication technique, consisted of a two-stage serpentine connector and screen print of the ternary conductive nanocomposite. EESs with high comprehensive performance (electrical and mechanical properties) are fabricated to confirm the analytical results and monitor the motion of a human hand. The good agreement between experimental and analytical results paves the way for bettering monitoring of skin growth during wound healing in order to avoid necrosis and scarring. This EES in monitoring the motion of a human exhibit presents a promising application for assisting prosthetic movement.
Highlights
Epidermal electronic sensors (EESs) have many practical applications [1,2,3,4,5,6] in the real-time and continuous monitoring of human vital information, which demonstrates their huge advantages, such as being ultrasoft, stretchable and ultrathin, over traditional medical sensors
EESs for monitoring skin strains [14,15], including motion [16,17], heart and breath rate [18,19,20], facial expression [21] and wrist pulse [22] are developed to replace wearable sensing devices, for which the features relevant to the comfort of long-term wear are difficult to take into account [23]
Order to improve of the ternary conductive nanocomposite showed that increasing the weight percentage of the carbon black (CB)
Summary
Epidermal electronic sensors (EESs) have many practical applications [1,2,3,4,5,6] in the real-time and continuous monitoring of human vital information, which demonstrates their huge advantages, such as being ultrasoft, stretchable and ultrathin, over traditional medical sensors. EESs for monitoring skin strains [14,15], including motion [16,17], heart and breath rate [18,19,20], facial expression [21] and wrist pulse [22] are developed to replace wearable sensing devices, for which the features relevant to the comfort of long-term wear are difficult to take into account [23]. Huang et al [32] used a helix electrohydrodynamic printing technique (HE-Printing) in combination with in-surface self-organized buckling to fabricate a hyper-stretchable self-powered sensor with high stretchability (>300%). These sensors are perishable and unstable, and have a low accuracy due to their large size (~5 cm) [29]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
