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...