Non-invasive surface electromyography(sEMG)electrodes have vast potential in fields such as healthcare,human-computer interaction,and entertainment,providing diverse information related to electromyographic ***-invasi...
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Non-invasive surface electromyography(sEMG)electrodes have vast potential in fields such as healthcare,human-computer interaction,and entertainment,providing diverse information related to electromyographic ***-invasive sEMG electrodes reduce user risks but gather sEMG signals of lower quality compared to invasive ***,various advanced electrode materials have been developed for detecting physiological electrical signals,but the majority of them are single channel ***,we report 64-channel three-dimensional(3D)Ti_(3)C_(2)MXene/CNT composite electrodes fabricated using bonding-driven self-assembly *** electrodes are characterized by low skin-electrode contact impedance and a high signal-to-noise ratio(SNR)for collection of EMG *** electrode arrays exhibit remarkable flexibility,conforming seamlessly to the skin’s ***,the skin-electrode contact impedance of 3D Ti_(3)C_(2)MXene/CNT electrodes decreases by 10-fold compared to Ag/AgCl gel electrodes at a frequency of 100 ***,when collecting sEMG signals from the arm,the prepared Ti_(3)C_(2)MXene/CNT electrodes exhibit lower baseline noise and higher SNR compared to Ag/AgCl gel ***,Ti_(3)C_(2)MXene/CNT electrodes can collect sEMG signals of different hand gestures,while maintaining a high SNR(∼25 dB).By combining machine learning,sEMG signals from different gestures can be identified with a recognition rate exceeding 90%.The exceptional performance and scalability of these 3D Ti_(3)C_(2)MXene/CNT electrodes indicate a promising future for shaping electronic skin and wearable device technologies.
Micro-LED has attracted more attention due to its unique photoelectric properties, such as high brightness, high energy efficiency, high stability and other characteristics, which facilitate its widespread application...
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Micro-LED displays have garnered widespread attention due to their high resolution, high brightness, and long lifespan. However, the heterogeneous integration and the reliability of Micro-LEDs pose significant challen...
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Thermally activated delayedfluorescence(TADF)molecules are regarded as promis-ing materials for realizing high-performance organic light-emitting diodes(OLEDs).The connecting groups between donor(D)and acceptor(A)units...
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Thermally activated delayedfluorescence(TADF)molecules are regarded as promis-ing materials for realizing high-performance organic light-emitting diodes(OLEDs).The connecting groups between donor(D)and acceptor(A)units in D–A type TADF molecules could affect the charge transfer and luminescence performance of TADF materials in aggregated *** this work,we design and synthesize four TADF molecules using planar and twisted linkers to connect the aza-azulene donor(D)and triazine acceptor(A).Compared with planar linkers,the twisted ones(Az-NP-T and Az-NN-T)can enhance A–A aggregation interaction between adjacent molecules to balance hole and electron *** a result,highly efficient and stable deep-red top-emission OLEDs with a high electroluminescence efficiency of 57.3%and an impressive long operational lifetime(LT_(95)∼30,000 h,initial luminance of 1000 cd m^(-2))are *** study provides a new strategy for designing more effi-cient and stable electroluminescent devices through linker aggregation engineering in donor–acceptor molecules.
Organic electrochemical transistors(OECTs)have emerged as one type of promising building block for neuromorphic systems owing to their capability of mimicking the morphology and functions of biological neurons and ***...
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Organic electrochemical transistors(OECTs)have emerged as one type of promising building block for neuromorphic systems owing to their capability of mimicking the morphology and functions of biological neurons and ***,numerous kinds of OECTs have been developed,while self-healing performance has been neglected in most reported *** this work,the OECTs using self-healing polymer electrolytes as dielectric layers are *** important synaptic behaviors are simulated in the OECTs by doping the channel layers with ions from the *** from the dynamic hydrogen bonds in the self-healing polymer electrolytes,the OECTs can successfully maintain their electrical performance and the ability of emulating synaptic behaviors after self-healing compared with the initial *** significantly,the sublinear spatial summation function is demonstrated in the OECTs and their potential in flexible electronics is also *** results suggest that our devices are expected to be a vital component in the development of future wearable and bioimplantable neuromorphic systems.
Low-temperature silicon nitride(SiNx)films deposited by plasma-enhanced chemical vapor deposition(PECVD)have huge application potential in the flexible ***,the applicability of SiNx largely depends on the film’s gene...
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Low-temperature silicon nitride(SiNx)films deposited by plasma-enhanced chemical vapor deposition(PECVD)have huge application potential in the flexible ***,the applicability of SiNx largely depends on the film’s general properties,including flexibility,deposition rate,residual stress,elastic modulus,fracture strain,dielectric constant,refraction index,*** optimization towards specific application by conventional experiment design needs lots of work due to the interaction of muti quality and process ***,an efficient global optimization approach for the process technology was proposed based on the Taguchi orthogonal experiment method considering muti-factor *** of all,the Taguchi orthogonal experiment design and analysis was used to rank the influences of main process parameters on the quality characteristics,including radio frequency(RF)power,pressure,silane flow rate,ammonia flow rate and nitrogen flow ***,the global optimization approach was carried out utilizing the multi-response optimizer considering the combination target of film formation rate,residual stress,dielectric constant,elastic modulus,fracture strain,refractive ***,the optimal solution of the SiNx film was finally obtained and verified.
Metasurfaces have facilitated numerous innovative applications in the scope of nonlinear ***,dynamically tuning the nonlinear response at the pixel level is very *** work proposed a novel method to electrically manipu...
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Metasurfaces have facilitated numerous innovative applications in the scope of nonlinear ***,dynamically tuning the nonlinear response at the pixel level is very *** work proposed a novel method to electrically manipulate the local amplitude and phase of third-harmonics generation(THG)by integrating the giant nonlinear responses resulting from intersubband transitions of multiple quantum wells(MQW)with plasmonic *** demonstrated method may pave the way to realize nonlinear optical elements with versatile functionalities by electrically tuning and promoting the advancements of innovative applications such as lidar,3D displays,optical encryption,optical computing,and so on.
The neutral layer (NL) strategy is a key technique for improving the bendability of flexible electronic devices. In this study, by considering a three-layer structure as an example, the results obtained by finite elem...
The neutral layer (NL) strategy is a key technique for improving the bendability of flexible electronic devices. In this study, by considering a three-layer structure as an example, the results obtained by finite element analysis (FEA) showed that the NL gradually moved to the top surface of the film as the film thickness and Young’s modulus increased, which are similar to the results produced by theoretical calculations. Subsequently, we optimized the thickness of a single NL structure and the failure bending radius of an indium tin oxide (ITO) electrode was reduced by 50% after optimization. In order to address the problems that affect the design of a single NL, we used optical clear adhesive (OCA) to generate multiple NLs. The FEA method was again applied to the structure and the results showed that decreasing the elastic modulus of the OCA and film thickness could reduce the maximum strain in the film. Finally, the effects of the OCA parameters on the protection of a multiple-layer ITO electrode structure were verified in bending experiments, which showed that the strain on ITO could be reduced from 5.6% to almost 0 in the two-electrode structure. The proposed strategies for designing single and multiple NLs can provide some guidance to facilitate optimizing the electronic infrastructure of flexible devices.
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