Smart band-aid: Multifunctional and wearable electronic device for self-powered motion monitoring and human-machine interaction

Sun, Qizeng; Wang, Li; Ren, Guozhang; Zhang, Linrong; Sheng, Huixiang; Zhu, Yameng; Wang, Hongchen; Lü, Gang; Yu, Hai‐Dong; Huang, Wei

doi:10.1016/j.nanoen.2021.106840

Cited by 50 publications

(33 citation statements)

References 46 publications

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“…8 Modification of the polymer surface morphology can increase the generated charge. 9–14 An increase can also be achieved by optimising the architectures of the devices, 15–19 doing chemical functionalization of the surfaces, 20 or adjusting the electronic and physicochemical properties of the contacting polymer materials. 21–27…”

Section: Introductionmentioning

confidence: 99%

Surface engineering of PDMS for improved triboelectrification

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Surface engineering of PDMS for improved triboelectrification

et al. 2023

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“…26−30 These flexible electronics could be also applied in various fields not limited to energy devices, such as wearable/ implantable health monitoring systems and human−machine interactions. 31,32 However, gel−gel transitions of PNIPAm hydrogels might fail to modulate ion migrations at high temperatures since a high temperature contributes to high mobility of ions. In PNIPAm hydrogels, LCST-induced polymeric movements would occur at confined microscale regions, which ensures rapid reversibility of gel−gel transitions.…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquid Cross-linked Poly(N-isopropylacrylamide) Hydrogel Electrolytes for Self-Protective Flexible Separator-Free Supercapacitors

Tan

Zhang

Xue

et al. 2023

Ind. Eng. Chem. Res.

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Thermoresponsive sol−gel transitions of poly(Nisopropylacrylamide) (PNIPAm) aqueous electrolytes have been explored to endow smart overheating self-protection for energy devices, but sol-state electrolytes are not suitable for flexible or wearable energy devices. It has remained challenging to explore PNIPAm hydrogels as smart electrolytes and separators in flexible energy devices. Herein, PNIPAm hydrogels cross-linked by ionic liquids were designed and prepared with gel−gel transitions for flexible supercapacitors, working both as the smart electrolyte and separator. The assembled supercapacitors exhibited desired specific capacitance and long-term stability at room temperature, and the capacitance suddenly dropped to almost zero at 60 °C to switch to self-protection of the supercapacitors. The reversible overheating protections were both obtained in both unbending and bending supercapacitors. The ionic liquid cross-linker played an important role to achieve effective overheating protections by confining more ions in the aggregated PNIPAm phase at high temperatures. Consequently, the ionic liquid cross-linked PNIPAm hydrogel electrolytes here demonstrated the advanced shutdown function of electrochemical performance compared with conventional thermoresponsive electrolytes. This work will inspire a more rational design of thermoresponsive hydrogel electrolytes in the perspective of polymers and aqueous electrolytes to achieve overheating protections.

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“…In an OECT, source and drain electrodes are connected by an organic semiconductor (channel layer), and the current passing from source to drain electrodes (also called drain current) is largely affected by the potential applied on the gate electrode. Thereby, the chemical and biological signals collected on the gate electrode can be converted to dramatically amplified electrical signals. − The regulating ability of the gate voltage to the drain current is defined as transconductance (∂ I D /∂ V G ), reflecting the signal-amplifying ability of an OECT. Improving the transconductance is crucial to the design and fabrication of high-performance OECTs.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Organic Electrochemical Transistor Based on Photo-annealed Plasmonic Gold Nanoparticle-Doped PEDOT:PSS

Zhang

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Organic electrochemical transistors (OECTs), particularly the ones based on PEDOT:PSS, are excellent candidates for chemical and biological sensing because of their unique advantages. Improving the sensitivity and stability of OECTs is crucially important for practical applications. Herein, the transconductance of OECT is improved by 8-fold to 14.9 mS by doping the PEDOT:PSS channel with plasmonic gold nanoparticles (AuNPs) using a solution-based process followed by photo annealing. In addition, the OECT also possesses high flexibility and cyclic stability. It is revealed that the doping of AuNPs increases the conductivity of PEDOT:PSS and the photo annealing improves the crystallinity of the PEDOT:PSS channel and the interaction between AuNPs and PEDOT:PSS. These changes lead to the increase in transconductance and cyclic stability. The prepared OECTs are also demonstrated to be effective in sensitive detection of glucose within a wide concentration range of 10 nM−1 mM. Our OECTs based on photo-annealed plasmonic AuNP-doped PEDOT:PSS may find great applications in chemical and biological sensing, and this strategy may be extended to prepare many other high-performance OECT-based devices.

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Smart band-aid: Multifunctional and wearable electronic device for self-powered motion monitoring and human-machine interaction

Cited by 50 publications

References 46 publications

Surface engineering of PDMS for improved triboelectrification

Surface engineering of PDMS for improved triboelectrification

Ionic Liquid Cross-linked Poly(N-isopropylacrylamide) Hydrogel Electrolytes for Self-Protective Flexible Separator-Free Supercapacitors

High-Performance Organic Electrochemical Transistor Based on Photo-annealed Plasmonic Gold Nanoparticle-Doped PEDOT:PSS

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