Top Research Papers on Viscosity

Elasticity typically refers to a material's ability to store energy, whereas viscosity refers to a material's tendency to dissipate it. In this review, we discuss fluids and solids for which this is not the case. These materials display additional linear response coefficients known as odd viscosity and odd elasticity. We first introduce odd viscosity and odd elasticity from a continuum perspective, with an emphasis on their rich phenomenology, including transverse responses, modified dislocation dynamics, and topological waves. We then provide an overview of systems that display odd viscosity ...

Intracellular viscosity plays an important role for maintaining the diffusion, transportation, signal transmission and cell metabolism between biomolecules. And abnormal intracellular viscosity would cause various concurrent diseases such as fatty liver, hyperlipidemia and so on. However, as far as we know, there are quite few tools could be used for imaing of intracellular viscosity, much less in-depth investigation of the viscosity-related dysfunctional and disease. Herein, we have designed and developed a series of NIR fluorescent probes, in which the chemical bond between fluorophore and m...

Viscosity has become increasingly important in biological systems, especially as a major factor in the process of diffusion control. The abnormality of viscosity is closely related to the development of many diseases in the cellular microenvironment. The abnormal viscosity behavior of cells is always accompanied with dramatic changes in the levels of relevant active analytes. Therefore, real-time monitoring of local microviscosity and analytes changes in living cells is of great importance. In comparison to conventional imaging approaches, fluorescence imaging has become a powerful tool to det...

It is demonstrated that elevated viscosity counterintuitively increases the motility of various cell types on two-dimensional surfaces and in confinement, and increases cell dissemination from three-dimensional tumour spheroids.

Viscoadaptation reveals viscosity to be a tunable property for regulating diffusion-controlled processes in a changing environment and may have implications for multiple biophysical processes in the cell.

A micropipette-based technique is developed, which uniquely allows quantifications of both the surface tension and viscosity of biomolecular condensates, independent of labeling and surface wetting effects, and will resolve several limitations regarding current approaches.

This minireview will comprehensively summarize the viscosity-sensitive small molecular fluorescent probes used in bioimaging, mainly in recent three years, and put forward the current challenges and opportunities for the development of viscosities-specific fluorescent probes.

The majority of viscosity-sensitive chemosensors that have been reported thus far are summarized and there are some fluorescent probes that can be used to quantify intracellular Viscosity when combined with fluorescence lifetime (FLIM) and ratiometric imaging under water-free conditions.

This paper presents a meta-anatomy of the response of the immune system to the presence of x-ray diffraction and shows the importance of knowing the viscosity of the Higgs boson.

Chemically installing extended π-rich alternating carbon-carbon linkage between the rotational electron donor and acceptor of RBFs allows for the design of three scaffolds of RBF derivatives that span a wide range of viscosity sensitivities.

Nowadays, the output of light crude oil is approaching its peak, which has shifted the attentions of petroleum industry to a large quantity of heavy oil and bitumen in order to offset the growing demand of energy and fuels. The heavy oil and bitumen are usually characterized by high viscosity, high density/low API gravity, low yield of low boiling point fuel fraction, and high heteroatom content in comparison with the light oil, requiring in situ upgrading to improve the mobility of heavy oil. before recovery it. One of the methods for upgrading is to add catalysts to the underground reservoir...

The interest in green and sustainable solvents has been dramatically increasing in recent years because of the growing awareness of the impact of classical organic solvents on environmental pollution and human health.

Rapid depletion in fossil fuels, inflation in petroleum prices, and rising energy demand have forced towards alternative transport fuels. Among these alternative fuels, diesel-ethanol and diesel-biodiesel blends gain the most attention due to their quality characteristics and environmentally friendly nature. The viscosity and density of these biodiesel blends are slightly higher than diesel, which is a significant barrier to the commercialization of biodiesel. In this study, the density and viscosity of 30 different ternary biodiesel blends was investigated at 15 °С and 40 °С, respectively. Di...

Abstract. Volatility and viscosity are important properties of organic aerosols (OA), affecting aerosol processes such as formation, evolution, and partitioning of OA. Volatility distributions of ambient OA particles have often been measured, while viscosity measurements are scarce. We have previously developed a method to estimate the glass transition temperature (Tg) of an organic compound containing carbon, hydrogen, and oxygen. Based on analysis of over 2400 organic compounds including oxygenated organic compounds, as well as nitrogen- and sulfur-containing organic compounds, we extend thi...

Six mitochondria/lysosomes self-targetable and viscosity-sensitive dyes (1a-f) were developed via simple structure modification on cyanine-derived dyes and indicated that different derivatives with the same chromophore core exhibited different organelle-targeting abilities.

It is demonstrated that the transformation energy barrier from the planar conformation to the butterfly conformation is strongly affected by the molecular structures of BODIPY rotors, and plays a critical role in viscosity sensitivity.

A novel amino functionalized ionic liquid of [TEPAH][2-MI] combined with organic solvents has been proposed for CO2 capture to achieve low regeneration energy consumption and viscosity and could convert into each other continuously when CO2 was absorbed.

One of the essential specifications of nanofluids is the rheological behavior that has a significant effect on the system's performance. The primary objective of the present study is to investigate the rheological behavior and dynamic viscosity of the CuO-TiO2/water hybrid nanofluid. First of all, the chemical, atomic, and surface structures of the CuO and TiO2 nanoparticles were examined using X-ray diffraction, Fourier-Transform Infrared Spectroscopy, and Field Emission Scanning Electron Microscopy tests. Then, the two-step method was employed to prepare the needed samples. At the next step,...

Viscosity-temperature property of coal ash slag plays the key role for stable and long term operation of entrained flow gasifiers, which is the quantitative parameter for slag tapping process. It is described by a curve of slag viscosity as a function of temperature, which includes three aspects: viscosity value dependence on temperature, temperature of critical viscosity (TCV), and pattern of slag viscosity-temperature curve. A clear and comprehensive understanding of viscosity-temperature property of coal ash slag and its influencing factors is really important for slag tapping, operation an...

Viscosity modifying agents (VMAs) are essential ingredients for the production of flowable cement-based materials. This paper presents an overview of commonly used VMAs and attempts to shed some light on the underlying physics at the origin of their mechanisms of action. The main molecular parameters of VMA controlling the rheological properties of the cement pore solution are highlighted. As the mechanisms of action of VMAs in cement-based materials are closely related to their affinity with the surface of cement particles, the adsorption of the main VMA types is discussed. The effect of VMAs...

This proposed fluorescence imaging method outperforms the clinical hematoxylin and eosin staining assay with the advantageous features of noninvasive and in vivo characteristics and is expected that this unique strategy will reinvigorate the continued perfection of the cancer diagnosis systems.

In 3D concrete printing (3DCP), it is necessary to meet contradicting rheological requirements: high fluidity during pumping and extrusion, and high stability and viscosity at rest to build the layered structure. In this paper, the impact of the hydroxypropyl methylcellulose (HPMC)-based viscosity-modifying admixture (VMA) on the 3D printability and mechanical performance of a limestone and calcined clay based cementitious material is investigated. A combination of VMA and superplasticizer was used for that purpose. In this case, controlling the competitive effects between VMA and superplastic...

WD-NO2 was successfully applied to track the variation of viscosity in diabetes-induced liver injury process in vivo and displayed the best combination of proper-ties, including a 31-fold fluorescence enhancement in re-sponse to Viscosity, insensitivity to environments (pH, po-larity) and relatively high quantum yield.

The examined hybrid nanofluid was noticed to possess a lesser viscosity in comparison with the mono-particle nan ofluid of Fe2O3/water, which was good for engineering applications as the pumping power would be reduced.

In this research, two different diesel oil-based nanofluids were prepared and the influence of temperature and nanoparticle content were examined on viscosity, tribological, and physicochemical features of diesel oil. The kinematic viscosity of samples was experimentally evaluated based on standard ASTM D445. The greatest viscosity increment was diagnosed at 0.7 wt% and 100 °C for both of the prepared nanofluids. The anti-friction behavior of the nanofluids was studied utilizing a pin-on-disc tribometer. The acquired outcomes revealed that ZnO and MoS2 nanoparticles (NPs) could promote the tri...

Nanofluids as heat transfer fluids have shown huge potential in heat exchange systems. How to balance effective thermal conductivity, dispersion stability and viscosity has become one of crucial issues for the application of nanofluids. MXene nanosheets with high aspect ratio coupled with high thermal conductivity and hydrophilic properties are expected to be potential fluids fillers. In this study, comprehensive performance of ethylene glycol (EG) based nanofluids containing multilayer and delaminated single layer Ti3C2Tx MXene are investigated in detail. The thermal conductivity of nanofluid...

Aiming at the high-concentration dust pollution in open-pit coal mines, a foam dust suppressant with low viscosity and consolidated coal dust is developed. In order to reduce the limited effect of binder viscosity on the foaming ability and wettability of foam, tapioca starch is oxidized with Cu 2+ /H 2 O 2 System in this study to reduce the molecular weight of the polymer and prepare materials with high consolidation and low viscosity. The dust suppression performance of the sample is measured, and the microscopic adsorption mechanism of the dust suppressant is investigated by molecular dynam...

Investigation of the effects of three types of KGM on the rheological properties and microstructure of dough, as well as the performance of steamed bread found that KGM with higher viscosity improved the quality of steame bread.

Developing NH3 separation technology with high efficiency is very meaningful for the advancement of the NH3 synthesis process. In this work, a new class of deep eutectic solvents (DESs) were designed by pairing N,N,N′,N′-tetramethyl-1,3-propanediamine dihydrochloride ([TMPDA]Cl2) with phenol (PhOH) at the molar ratios of 1:3∼7. [TMPDA]Cl2 + PhOH DESs have multiple weak-acidic groups and viscosities of as low as 48.1 cP at 298.2 K. They also exhibit excellent performance for the separation of NH3, showing not only efficient and selective but also reversible absorption of NH3. Especially, the so...

Experimental results indicate that VO has great potential for the detection of viscosity and ONOO- and to assay drug-induced hepatotoxicity, and offers a new detection tool/method for a deeper understanding of drug- induced organism injury.

A mitochondria-targeted near-infrared fluorescent probe NIR-V with 700 nm emission was designed to monitor cell viscosity changes with high selectivity and sensitivity, which was applied to detect the intracellular Viscosity and image pancreatic tissue in a diabetic mouse model.

Ferroptosis is characterized by the massive lipid peroxidation, and recently has been demonstrated to be closely associated with lipid droplets (LDs). However, the changes of LDs viscosity during ferroptosis are still unrevealed. Herein, we present the changes of the LDs viscosity during ferroptosis by a novel viscosity-sensitive near-infrared (NIR) fluorescent probe (BDHT). Probe BDHT (2-(benzo[ d ]thiazol-2-yl)-7-(4-(dimethylamino)phenyl)hepta-2,4,6-trienenitrile, C 22 H 19 N 3 S) showed highly sensitive and selective response to viscosity, mainly distributed in cellular LDs. By means of the...

The development of a viscosity-activatable second near-infrared window fluorescent probe (NP-V) for the detection of lysosomal viscoity in hepatocytes and mice during HIRI and demonstrates the potential of NP-V as a dual-functional probe for the elucidation of HirI pathogenesis and the direct navigation of HIRi lesions in clinical applications.

From obtained results it is observed that temperature field increases versus higher thermal Biot number for both nanoparticles and it is also observed that the thermal field is more in presence of Molybdenum disulfide as compared to Silicon dioxide, because the thermal conductivity is higher than Silicon dioxide.

pH, HSO3−, and viscosity are crucial bio-markers for evaluating the status of mitochondria in the cell micro-environment. With this research, we developed a ratiometric mitochondria-targeting fluorescent probe 1 that was responsive toward bisulphite, pH and viscosity. Hydroxylphenyl 1,3-benzoxazole (D) acted as a pH recognition unit; benzo[e]indolium (A) acted as a fluorescent rotor to achieve a viscosity response; the C = C bond constructed by bridging D and A was susceptible to nucleophilic attack and hence responded to HSO3−. Probe 1 exhibits significant ratiometric signal changes, high sen...

This work focuses on the characterization of chitosan most important parameters - solubility, crystallinity, degree of deacetylation (DD) and molecular weight - in a simple and convenient way.

Currently, the high viscosity modified asphalt (HVMA) is widely used in the porous asphalt pavement (PA) in China. HVMA provides good raveling resistance and rutting resistance for PA due to the excellent rheological property of it. However, the high construction temperature and the well-developed void structure of PA lead to a severe aging of HVMA. In order to understand the thermal aging behavior and mechanism of HVMA, the changes of rheological property, chemical composition, and phase morphology of HVMA, SBS modified asphalt (SBSMA) and PEN70 asphalt (70#A) during thermal aging process wer...

Developing a clean and environmentally-friendly soy protein adhesive to replace formaldehyde-based adhesive is of great significance for sustainable development of resources and human health. Due to the high molecular weight of protein, the resultant soy protein adhesive has a high viscosity and unstable bonding performance, which limit their application on plywood fabrication. Inspiring by theory of molecular recombination enhancing material properties, in this study, bromelain was used to degraded soy protein molecules into small polypeptide chains; a bio-derived cross-linker, triglycidylami...

Abstract Ionic liquid (IL) electrolytes with concentrated Li salt can ensure safe, high‐performance Li metal batteries (LMBs) but suffer from high viscosity and poor ionic transport. A locally concentrated IL (LCIL) electrolyte with a non‐solvating, fire‐retardant hydrofluoroether (HFE) is presented. This rationally designed electrolyte employs lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), 1‐methyl‐1‐propyl pyrrolidinium bis(fluorosulfonyl)imide (P13FSI) and 1,1,2,2‐tetrafluoroethyl 2,2,3,3‐tetrafluoropropyl ether (TTE) as the IL and HFE, respectively (1:2:2 by mol). Adding TTE enables ...

Hybrid nanofluids are gaining a wide range of applications due to their reported improvement in heat transfer properties. This study presents an experimental investigation into the specific heat and viscosity of Al2O3-ZnO water hybrid nanofluids at three mixture ratios. The specific heat and viscosity measurements are taken over different temperatures at different volume concentrations. The study compared the experimental data to classical models and observed that the specific heat model overestimated and the viscosity model underestimated experimental obtained values. According to results, th...