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1D-2D nanohybrid-based textile strain sensor to boost multiscale deformative motion sensing performance

Nano Research 2022年第9期15卷 8398-8409页

作者： Xiaoting Li Keng Huat Koh Jiaqi Xue Chun Ho So Na Xiao Chung Tin King Wai Chiu Lai Department of Biomedical engineering City University of Hong KongKowloon TongHong KongChina

The development of strain sensors with both superior sensitivity(gauge factor(GF)>100)and broad strain-sensing range(>50%strain)is still a grand ***,which demonstrate significant structural deformation under microscale motion,are required to offer high *** connection of materials upon large-scale motion is demanded to widen strainsensing ***,it is hard to achieve both features ***,we design a crepe roll structure-inspired textile yarn-based strain sensor with one-dimensional(1D)-two-dimensional(2D)nanohybrid strain-sensing sheath,which possesses superior *** ultrastretchable strain sensor exhibits a wide and stable strain-sensing range from microscale to large-scale(0.01%–125%),and superior sensitivity(GF of 139.6 and 198.8 at 0.01%and 125%,respectively)*** strain sensor is structurally constructed by a superelastic 1D-structured core elastomer polyurethane yarn(PUY),a novel high conductive crepe roll-structured(CRS)1D-2D nanohybrid multilayer sheath which assembled by 1D nanomaterials silver nanowires(AgNWs)working as bridges to connect adjacent layers and 2D nanomaterials graphene nanoplates(GNPs)offering brittle lamellar structure,and a thin polydopamine(PDA)wrapping layer providing protection in exterior *** the stretching/deformation process,microcracks originate and propagate in the GNPs lamellar structure enable resistance to change significantly,while AgNWs bridge adjacent GNPs to accommodate applied stress partially and boost *** 1D crepe roll structure-inspired strain sensor demonstrates multifunctionality in multiscale deformative motion detection,such as respiratory motions of Sprague–Dawleyw rat,flexible digital display,and proprioception of multi-joint finger bending and antagonistic flexion/extension motions of its flexible continuum body.

关键词： crepe roll-inspired multifunctional yarn strain sensor one-dimensional silver nanowires/two-dimensional graphene nanoplates(1D AgNWs/2D GNPs)nanohybrid multi-scale motion detection e-textiles tactile sensing proprioception of the endoscopic robot

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基于石墨烯的心电图监测运动胸罩的开发研究

基于石墨烯的心电图监测运动胸罩的开发研究

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作者： Mahmuda Akter Shathi 浙江理工大学

学位级别：硕士

This examination approach has been utilized to improve and research the electrical conductivity of graphene-based textiles by utilizing the exhaust dyeing method for electrocardiogram（eCG）*** outcomes demonstrated that the dyeing of graphene oxide（GO）is a novel procedure towards consider advancement for the large-scale manufacturing and cost-viability of wearable sensors such as sports *** this examination work,we showed a simple and reliable strategy that conforms to a commercially available dyeing method for sports *** the wake of dyeing,the reduction of graphene oxide and poly（3,4-ethylenedioxythiophene）（PeDOT:PSS）.The conductive manufactured electrodes indicated low impedance higher contract with the human skin and demonstrated that the textile subtract coated with reduced graphene oxide（rGO）and PeDOT:PSS could be utilized to monitor high-quality electrocardiograms for heart rate and pulse detection during wear the sports *** though this exploration work depends on the advancement of graphene-based composites with conductive polymer PeDOT:PSS for profoundly flexible and wearable eCG,Pulse *** pressure *** two sensors were created on textile knitted and woven fabrics,which is embedded into a sports bra and utilizing two distinctive manufacture strategies,exhaust ***-dry-cure techniques,for eCG,Pulse rate and pressure monitor from the human *** knitted and woven fabric structures of Nylon-Lycra and cotton fabric were created with rGO and PeDOT:PSS polymer utilizing distinctive commercially accessible strategies exhaust dyeing and pad-dry-cure procedures,*** Nylon-Lycra and cotton fabric was started by using the exhaust dyeing of graphene *** electrical conductivity and eCG monitoring of the as coated fabric was improved with expending the number of dyeing cycles and the number of dips 2-3 cycles of rGO and PeDOT:PSS *** exhaust dyeing procedure is the most convenient and widely utilized m

关键词： Graphene Conductive polymers e-textiles exhaust Dyeing Pad-Dry-Cure Sensors electrocardiograph Pulse rate

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