Abstract In aqueous rechargeable zinc–manganese dioxide batteries (ZMBs), some irreversible side reactions, such as Mn 2+ dissolution, often lead to capacity fading over cycling. These reactions play a crucial role in the and cycle performance of battery. The implementation bionic electrode microskin (EMS) composed collagen hydrolysate convert into reversible is reported. proposed EMS effectively adsorbs confines ions around cathode through van der Waals forces, hydrogen bonds, and/or ionic...

Abstract Graphene-oxide (GO) has been recognized as an excellent lubrication material owing to its two-dimensional structure and weak interlayer interactions. However, the functional groups of GO that can contribute anti-friction, anti-wear, superlubricity are yet be elucidated. Hence, further improvement in GO-family materials tribology fields is impeded. In this study, macroscale with a coefficient friction less than 0.01 achieved by exploiting high adhesive force between amino within...

Graphene-family materials have been investigated by researchers as promising additives for various lubrication systems due to their unique physical-chemical properties. It has proven that graphene-family can lead enhanced and wear-resistance performance, which potential reduce the energy losses carbon emissions, wear of machines industrial applications. Experimental, theoretical, simulation studies performed investigate tribological behaviors additives. The properties materials, including...

In aqueous rechargeable zinc-ion batteries (ARZIBs), electrolytes tend to initiate structure changes of metal oxides and conductive agents the electrode, which leads rapid capacity degradation. this work, we report an artificial cathode–electrolyte interface (CEI) composed paraffin that provides a trade-off between Zn2+ intercalation kinetics stability cathode materials. Such paraffin-based CEI can either suppress Mn2+ dissolution hence stabilize MnO2, or prevent water contact with graphite...

Realizing macroscopic superlubricity in the presence of external electric fields (EEFs) at steel interfaces is still challenging. In this work, with a coefficient friction value approximately 0.008 was realized under EEFs lubrication LiPF6-based ionic liquids interfaces. The roles cations and anions realization were studied. Based on experimental results, behavior Li(PEG)PF6 attributed to strong hydration effect Li+ complete reactions that contributed formation boundary film appropriate...

The p38 mitogen-activated protein kinases (MAPKs) are associated with insect immunity, tissue repair, and the insecticidal activity of Bacillus thuringiensis (Bt). Here, a MAPK family gene (Sep38β) was identified from Spodoptera exigua. Among developmental stages, transcription level Sep38β highest in egg, followed by that prepupa pupa. expression peaked Malpighian tubules hemolymph fifth instar larvae. Knockdown or injection SB203580 (a inhibitor) significantly downregulated SeDUOX reactive...

This work studied the influence of voltage parameters on friction and superlubricity performances LiPF6-based ionic liquids (ILs). The results show that direction magnitude greatly affected ILs macroscale can be achieved with a stimulation −0.1 V. surface analysis experiment indicate influences coefficient (COF) by determining types substances in tribochemical film formed ball, while COF affecting adsorption behavior Li(PEG)+ ions ball. At V, cation group FeOOH-containing contribute to...

Hybrid metallic nanowire-embedded, highly conductive poly(3,4-ethylenedioxy thiophene):polystyrenesulfonate (PEDOT:PSS) with synergetic properties is indispensable for enhancing the performances of polymer-based electronic devices. Here, we report embedment silver nanowires (AgNWs), diameter ∼100 nm and a high concentration (500 mg/mL) dispersed in either ethanol or isopropanol, PEDOT:PSS compare effects nanowire-dispersing solvents as well its thicker on overall particularly charge transfer...

This work studied the lubrication performances of polyalkylene glycols, which are insulating oils, at steel interface under external electric fields. The results show that fields greatly affect and there is an optimal voltage (-1.0 V) for improvement in friction reduction performance. surface analysis experiment indicate glycol adsorption film amount FexOy FeOOH tribochemical contribute to improved performance negative condition. proves oils can be affected by as well. A model was proposed,...

This paper proposes a novel wireless power transfer (WPT) system powering multiple loads. The repeater coils are used to transmit the over long distance. Every two form unit, which corresponds load. For each transmitting coil, capacitor is connected in series with it and LCC compensation circuit for receiving forms an S-LCC topology. It proven that constant voltage characteristics can be obtained load when neglecting coils' parasitic resistances, facilitates independent control.

In this study, graphene oxide (GO) nanoflakes and lithium salt (LiPF6) were utilized as lubrication additives in ether bond-containing dihydric alcohol aqueous solutions (DA(aq)) to improve performances. The apparent friction reduction superlubricity realized at the Si3N4/sapphire interface. conditions laws for realization have been concluded. underlying mechanism was synergy effect of GO LiPF6. It proven that a adsorption layer formed interface, which caused shearing interface transfer from...

The concept of extracting energy from the human body to recharge depleted sources has gained significant attention. Recently, scientists have focused on harnessing biomechanical while walking. aim this study is optimize a piezoelectric bending beam-based knee harvester enhance performance. Specifically, shape beam (the substrate: carbon fiber plate) optimized modulate deformation, such that average strain macro composites (MFC) attached improved generate more electricity. In addition,...

This paper proposes a multi-load wireless power transfer (WPT) system using repeater coils. The unit that contains two units is designed. series-parallel-series (SPS) compensation method used for each unit. constant load current all the loads can be obtained with suitable resonant condition when neglecting coils' parasitic resistances. A feasible coil structure designed where coils in same are both bipolar placed perpendicularly so coupling between them neglected. ferrite plate inserted to...

Sliding electrical contacts need to be lubricated by conductive lubricants perform low energy dissipation, high reliability, and long service life. This work studied the thermal stability, anti-corrosion capacity, conductive, tribological behaviors of several solid additives in multiply alkylated cyclopentanes (MACs), including carbon nanotubes (CNTs), multilayer graphene (MG), silver microparticles. The results showed that all possessed favorable stability corrosion resistance; particular,...

Abstract: The mitogen-activated protein kinase (MAPK) cascade regulates reactive oxygen species (ROS) to resist pathogen infection via dual oxidase (DUOX)-dependent intestinal immunity in Drosophila. However, the roles of MAPK mediated midgut immunity-related ROS regulate Bt insecticidal activity are not yet understood agricultural pests, limiting adoption gene-targeting strategies for pest management. developmental stage-dependent expression profiles showed that 4 (SeMEKK4) and 6 (SeMKK6)...

In this paper, we designed a novel bionic prosthetic foot mimicking human plantar muscle biomechanics to restore natural gait mechanics for lower limb amputees. addition, energy harvesting technology was exploited capture from the deformation of power wearable electronics monitor users' motion. Specifically, piezoelectric transducers were attached generate electricity when ground reaction force deformed during stance phase. Finite element analysis in ANSYS platform conducted analyze...

Electro-regulated friction is a widely adopted approach for reducing friction, with graphene oxide (GO) emerging as promising lubricating additive due to its electro-responsive frictional behaviour. However, the wide variety of functionalized GO additives available, each exhibiting distinct properties, it remains unclear which type demonstrates most effective electro-regulated friction-reducing performance, limiting their broader industrial application. In this study, behaviour three under...