In the microfluidic systems, the structure of micromixer is one of the important influence factors for the mixing performance. The traditional trial-and-error method for the optimization design of micromixer structure is difficult to consider both the mixing performance and power dissipation. Here we show the topology optimization method of designing the passive micromixer with the minimum power dissipation

A separator coupling cyclone with a built-in granular bed filter is proposed for gas purification. Due to the complicated mutual influences between the outer cyclone shell and the inner granular bed, the dust deposition is different from that in the traditional granular bed filter. By using the intrusive sampling method, the dusts deposited in the bed are sampled under varying inlet dust concentrations

Mitochondrial nucleoids or mitochondrial DNA (mtDNA) encodes for a variety of enzymes and proteins that are essential for oxidative phosphorylation, mitochondrial fussion/fission and apoptotic processes. However, visulization of mtDNA dynamics in response to external stumili has not yet been achieved. Herein, we developed a fluorescent probe, named BDP, that is capable of specifically bind to mtDNA

Real-time counting of circulating tumor cells (CTCs) can effectively reduce false-negative results, which, however, is a major stumbling block in the practical CTCs capture process. In this paper, upconversion luminescence is introduced into the inverted microfluidic chip to realize real-time ratiometric luminescence CTCs detection by utilizing its advantage of near-infrared light. In view of the low

Currently, it is still a challenge to endow polymethyl methacrylate (PMMA) with excellent electroconductivity and fire safety. In this work, we have designed a novel hybrid aiming to achieve the flame resistance and electrical conductive of PMMA by fabricating an ordered structure of the FR-PANI@Fe3O4@NC. Employing a magnetic field, the FR-PANI@Fe3O4@NC hybrid shows a beneficial configuration structure

Using block copolymers to improve the mechanical properties of materials was a promising method, and the effect was positively correlated with the aspect ratio of the nanostructures. However, except for worm-like and branched worm-like nanostructures, nanostructures with higher aspect ratios have not been reported so far and its forming methods was unknown. In this paper, a feasible approach was provided

The process of sorption enhanced steam methane reforming (SE-SMR) is an emerging technology for the production of low carbon hydrogen. The development of a suitable catalytic material, as well as a CO2 adsorbent with high capture capacity, has slowed the upscaling of this process to date. In this study, to aid the development of a combined sorbent catalyst material (CSCM) for SE-SMR, a novel approach

Bubble behavior has a significant effect on the gas–liquid mass transfer in bubbly flows. In this study, the bubble rising velocity and bubble shape in ultrapure water and surfactant solutions are experimentally measured by high–speed photography. The bubble velocity decreases and the bubble shape tends to be spherical due to the presence of the surfactant. As the bubble diameter increases, the rising

TRIS [tris(hydroxymethyl)aminomethane] is proposed as a new buffer with the advantages of being nontoxic and having only one conjugated acid. Moreover, it is well-established in biochemical applications, has good solubility in water (550 g/L), and is reasonably priced. Comparable micromixing experiments in a TRIS buffer and a borate buffer led to similar segregation indices with respective micromixing

Nearly 95% of the energy in the stirred reactor maintains the symmetrical flow field structure formed by fluid rotation, which reduces the efficiency of fluid transfer. In this paper, a dual-shaft eccentric impeller based on the Rushton turbine (RT) and pitched blade Rushton turbine (PBRT) was proposed to eliminate the stable symmetrical flow field structure in the mixing tank and improve the fluid

The study presents a novel ANN-CFD model for simulating flow in a vortex mixer (an unbaffled vessel stirred by a magnetic stirrer). Large eddy simulations (LES) are performed to simulate flow and turbulence considering presence of both air and liquid phases. The flow fields in air and liquid phases are coupled by applying suitable boundary conditions at the gas-liquid interface represented by the vortex

Aqueous energy storage devices hold great promise for smart electric grids and electric vehicles due to their high ionic conductivity, high safety and low cost, but are often limited by electrode materials with rather low voltage window and sluggish mass transport kinetics through thicker electrode materials. Herein, we design a vanadium oxide@molybdenophosphate composite on oxygen-functionalized carbon

Fiber-shaped supercapacitors (FSSCs) are emerging potential power sources for next-generation flexible and wearable miniaturized electronic devices. However, the practical application of FSSCs is hindered by their low energy density due to limited design and constraints in fiber-shaped electrodes production. Herein, a rational design of wet spun MXene (Ti3C2Tx)/PAN fibers derived multichannel porous

Assisting the disabled to speak is a meaningful activity and attracts much attention in the recent years. In this work, an intelligent artificial throat has been realized based on the nanomesh, which can not only emit the sound, but also detect the voice or throat vibration generated by using the electromyogram (EMG)-strain synergetic method. The Au/PVA nanomesh with good thermoacoustic effect can