Top Research Papers on 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...

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 ...

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.

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...

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.

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.

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.

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.

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...

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...

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...

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...

In this work, we estimate how much bulk viscosity driven by Urca processes is likely to affect the gravitational wave signal of a neutron star coalescence. In the late inspiral, we show that bulk viscosity affects the binding energy at fourth post-Newtonian (PN) order. Even though this effect is enhanced by the square of the gravitational compactness, the coefficient of bulk viscosity is likely too small to lead to observable effects in the waveform during the late inspiral, when only considering the orbital motion itself. In the post-merger, however, the characteristic time-scales and spatial...

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.

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.

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...

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.