Surfactant distribution heterogeneities at a fluid-fluid interface trigger the Marangoni effect, i.e., bulk flow due to surface tension gradient. The influence of surfactant solubility in on these flows remains incompletely characterized. Here we study sustained by injection hydrosoluble surfactants air-water interface. We show that have finite size increases with decrease critical micelle concentration surfactants. document universality velocity field and predict scaling laws based...

Unmanned Aerial Vehicles (UAVs) are widely used in military and civilian fields, which promotes the need of networking. Due to complex features UAV MANET, development MANET faces many technical challenges, such as routing. Generally speaking, Optimized Link State Routing (OLSR) protocol gives better performance on delay compare AODV protocol, so OLSR meets high demand for real-time communication. High mobility load imbalanced two significant characteristics networks. The networks is largely...

The phase instability of cesium lead halide perovskite is still a substantial challenge hindering its application. A 2D–3D all-inorganic Cs2PbI2Cl2–CsPbI2.5Br0.5 solar cell was successfully developed to address this issue. 2D Cs2PbI2Cl2 distributed among the grain boundaries 3D CsPbI3–xBrx grains. existence effectively facilitated (100) preferential crystal orientation CsPbI2.5Br0.5 crystals, promoting carrier transport. smooth transition region between (003)2D//(001)3D interface indicated...

Solid electrolytes based on theoretically identified double antiperovskite phases Li6OSI2 were successfully synthesized. Experimental characterization supported the theoretical prediction that S substitution of O leads to stabilization structure and lattice softening significantly enhance ionic conductivity, so total Li+ conductivity in Li6.5OS1.5I1.5 was two three orders better than best stoichiometric phase Li3OCl. However, both materials are fundamentally susceptible surface...

The inorganic halide perovskite CsPbI₃ has shown great promise in efficient solar cells.

Marangoni spreading on thin films is widely observed in nature and applied industry. It has serious implications for airway drug delivery, especially surfactant displacement therapy. This paper reports the results of experimental investigations a surfactant-laden droplet made more viscous Newtonian fluids as well viscoelastic fluids. The experiments used particle seeding, transmission-speckle method tracking velocimetry (PTV) to determine deformation film–droplet interface measure velocity...

We present a simple microfluidic device based on tri-phasic co-flow step-emulsification, for high throughput production of double emulsions with an ultrathin shell in single step.

All-inorganic perovskite solar cells are attractive photovoltaic devices because of their excellent optoelectronic performance and thermal stability. Unfortunately, the currently used efficient inorganic materials can spontaneously transform into undesirable phases without light-absorption properties. Studies have been carried out to stabilize all-inorganic by mixing low-dimensional perovskite. Compared with organic two-dimensional (2D) perovskite, 2D Cs2PbI2Cl2 shows superior Our group has...

In this research, SCAPS-1D simulation software (Version: 3.3.10) was employed to enhance the efficiency of CsSnX

Abstract The goal of this work is to make progress in the domain near-wall velocimetry. technique we use based on tracking nanoparticles an evanescent field, close a wall, called TIRF (total internal reflection fluorescence)-based particles are filmed continuously, with no time gap between two frames, so that information their trajectories lost. A number biases affect measurements: Brownian motion, heterogeneities induced by walls, statistical biases, photobleaching, polydispersivity and...

Spreading on the free surface of a complex fluid is ubiquitous in nature and industry, such as drug delivery, oil spill, treatment with patterns. Here, we report fingering instability that develops during Marangoni spreading deep layer polymer solution. In particular, wavelength depends molecular weight concentration We use transmission lattice method to characterize morphology finger height at micron scale. Maxwell model explain radius, which dominated by elasticity small time scales...

A cesium trimethylacetate (CsTa) organic salt with large steric hindrance radius and strong binding force to Pb²⁺ show the positive effects on inorganic CsPbI_2.84Br_0.16 perovskite stability.

We study the joint user association and resource allocation problem in both uplink (UL) downlink (DL) for full-duplex heterogeneous cellular networks (HCNs), wherein base stations (BSs) are densely deployed with reusable subchannels highly variable transmit powers. To reap benefits of BS densification, decoupled multiple-association (DMA) is considered, which enables each equipment (UE) to associate multiple BSs UL DL a manner. Furthermore, order provide best service, appropriate holistic...

We describe the results of experiments and mathematical analysis deformation a free surface by an aggregate magnetic particles. The system we study is differentiated from ferrofluid systems because it contains regions rich with material as well negligible content. In our experiments, force spherical permanent magnet collects particles to liquid–air interface, deforms form hump. hump composed non-magnetic due particle collection. When distance falls below threshold value, observe transition...

In this paper, the stabilized mixed finite element methods are presented for Navier‐Stokes equations with damping. The existence and uniqueness of weak solutions proven by use Brouwer fixed‐point theorem. Then, optimal error estimates H 1 ‐norm L 2 velocity pressure derived. Moreover, on basis estimate velocity, a two‐step method is proposed, which more efficient than usual methods. Finally, two numerical examples implemented to confirm theoretical analysis.

Abstract Micron- and submicron-sized droplets have extensive applications in biomedical diagnosis drug delivery. Moreover, accurate high-throughput analysis requires a uniform droplet size distribution high production rates. Although the previously reported microfluidic coflow step-emulsification method can be used to generate highly monodispersed droplets, diameter ( d ) is constrained by microchannel height b ), $$d\gtrsim 3b$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">...