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5,602 results
  • On interfacial viscosity in nanochannels. [Journal Article]
    Nanoscale. 2020 Jul 02 [Online ahead of print]Nazari M, Davoodabadi A, … Ghasemi H
  • Capillary driven transport of liquids in nanoscopic channels is an omnipresent phenomenon in nature and technology including fluid flow in the human body and plants, drug delivery, nanofluidic devices, and energy/water systems. However, the kinetics of this mass transport mechanism remains in question as the well-known Lucas-Washburn (LW) model predicts significantly faster flow rates compared to…
  • Surface tension measurement of normal human blood samples by pendant drop method. [Journal Article]
    J Med Eng Technol. 2020 Jun 26 [Online ahead of print]Yadav SS, Sikarwar BS, … Goyal A
  • The surface tension of blood plays an important role not only in the birth and decompression sickness but also in other functionality of the organism. It also provides capillary action during blood flow process. In this article, a simple and low-cost device is designed and fabricated for measuring the surface tension of blood by pendant drop method. In this device, a droplet of blood is formed in…
  • Principles of long-term fluids handling in paper-based wearables with capillary-evaporative transport. [Journal Article]
    Biomicrofluidics. 2020 May; 14(3):034112.Shay T, Saha T, … Velev OD
  • We construct and investigate paper-based microfluidic devices, which model long-term fluid harvesting, transport, sensing, and analysis in new wearables for sweat analysis. Such devices can continuously wick fluid mimicking sweat and dispose of it on evaporation pads. We characterize and analyze how the action of capillarity and evaporation can cooperatively be used to transport and process sweat…
  • How the capillarity and ink-air flow govern the performance of a fountain pen. [Journal Article]
    J Colloid Interface Sci. 2020 Jun 02; 578:660-667.Nikolov A, Murad S, … Wu P
  • As kids, the authors enjoyed learning how to write by dipping nib pens into ink, and then later, using flex nib pens for calligraphy. They remember, less fondly, the troubles with ink leaks and spills over the paper's surface. Despite advances in fountain pen design, the performance of fountain pens is still not perfect. A robust fountain pen has to provide a sustainable ink flow-no leaks-for smo…
  • Investigation on the Mechanisms of Spontaneous Imbibition at High Pressures for Tight Oil Recovery. [Journal Article]
    ACS Omega. 2020 Jun 09; 5(22):12727-12734.Wang C, Gao H, … Fan H
  • Water flooding is widely used for recovering crude oil from unconventional reservoirs due to its economic feasibility. At reservoir conditions, the injected water is usually imbibed into fractured rocks, so-called spontaneous imbibition, providing a considerable driving force for enhancing oil recovery. In this work, spontaneous imbibition on a rock surface is investigated at high-pressure condit…
  • Assignment of complex species by affinity capillary electrophoresis: the case of Th(IV)-desferrioxamine B. [Journal Article]
    Electrophoresis. 2020 Jun 16 [Online ahead of print]Sladkov V, Roques J, Meyer M
  • The electrophoretic mobility change of desferrioxamine B (DFO) was monitored by UV absorption spectrophotometry upon increasing the thorium(IV) concentration in the background electrolyte at two acidities ([HClO4 ]Tot = 0.0316 and 0.0100 M). These data enabled to assess the speciation model and to determine the equilibrium constant of [Th(DFO)H2 ]3+ at fixed ionic strength (I = 0.1 M (H,Na)ClO4).…
  • Crack density in bloodstains. [Journal Article]
    Soft Matter. 2020 Jun 16 [Online ahead of print]Choi J, Kim W, Kim HY
  • We construct a theoretical framework to understand the crack density of bloodstains by modeling whole blood as a suspension of binary size colloid particles. Our analysis based upon theories of soft capillarity and porous flows explains the observed increase of the crack density with increase of blood viscosity and decrease of environmental humidity. The results have direct implications on forens…
  • Plant Nanomaterials and Inspiration from Nature: Water Interactions and Hierarchically Structured Hydrogels. [Review]
    Adv Mater. 2020 Jun 14 [Online ahead of print]Ajdary R, Tardy BL, … Rojas OJ
  • Recent developments in the area of plant-based hydrogels are introduced, especially those derived from wood as a widely available, multiscale, and hierarchical source of nanomaterials, as well as other cell wall elements. With water being fundamental in a hydrogel, water interactions, hydration, and swelling, all critically important in designing, processing, and achieving the desired properties …
  • Angular Momentum in Rotating Superfluid Droplets. [Journal Article]
    Phys Rev Lett. 2020 May 29; 124(21):215301.O'Connell SMO, Tanyag RMP, … Vilesov AF
  • The angular momentum of rotating superfluid droplets originates from quantized vortices and capillary waves, the interplay between which remains to be uncovered. Here, the rotation of isolated submicrometer superfluid ^{4}He droplets is studied by ultrafast x-ray diffraction using a free electron laser. The diffraction patterns provide simultaneous access to the morphology of the droplets and the…
  • Dimerization and structure formation of colloids via capillarity at curved fluid interfaces. [Journal Article]
    Soft Matter. 2020 Jun 12 [Online ahead of print]Read A, Kutti Kandy S, … Stebe KJ
  • Capillary interactions are ubiquitous between colloids trapped at fluid interfaces. Generally, colloids in fluid interfaces have pinned, undulated contact lines that distort the interface around them. To minimize the area, and therefore the energy of these distortions, colloids interact and assemble in a manner that depends on the shape of the host interface. On curved interfaces, capillary inter…
  • COVID-19: hemoglobin, iron, and hypoxia beyond inflammation. A narrative review. [Journal Article]
    Clin Pract. 2020 May 19; 10(2):1271.Cavezzi A, Troiani E, Corrao S
  • Coronavirus disease-19 (COVID-19) has been regarded as an infective-inflammatory disease, which affects mainly lungs. More recently, a multi-organ involvement has been highlighted, with different pathways of injury. A hemoglobinopathy, hypoxia and cell iron overload might have a possible additional role. Scientific literature has pointed out two potential pathophysiological mechanisms: i) severe …
  • RNAProbe: a web server for normalization and analysis of RNA structure probing data. [Journal Article]
    Nucleic Acids Res. 2020 Jun 06 [Online ahead of print]Wirecki TK, Merdas K, … Stefaniak F
  • RNA molecules play key roles in all living cells. Knowledge of the structural characteristics of RNA molecules allows for a better understanding of the mechanisms of their action. RNA chemical probing allows us to study the susceptibility of nucleotides to chemical modification, and the information obtained can be used to guide secondary structure prediction. These experimental results can be ana…
  • Factors preventing materno-fetal transmission of SARS-CoV-2. [Journal Article]
    Placenta. 2020 May 29; 97:1-5.Celik O, Saglam A, … Aydin S
  • Although many pregnant women have been infected by coronavirus, the presence of intrauterine vertical transmission has not been conclusively reported yet. What prevents this highly contagious virus from reaching the fetus? Is it only the presence of a strong placental barrier, or is it the natural absence of the some receptor that the viruses use for transmission? We, therefore, need to comprehen…
  • Aggregation in viscoelastic emulsion droplet gels with capillarity-driven rearrangements. [Journal Article]
    Soft Matter. 2020 Jun 04 [Online ahead of print]Thiel A, Atherton TJ, … Hartel RW
  • Arrested, or partial, coalescence of viscoelastic emulsion droplets can occur when elastic resistance to deformation offsets droplet surface area minimization. Arrest is a critical element of food and consumer product microstructure and performance, but direct studies of structural arrest and rearrangement have been carried out using only two or three droplets at a time. The question remains whet…
  • Energy Stored in Nanoscale Water Capillary Bridges between Patchy Surfaces. [Journal Article]
    Langmuir. 2020 May 27 [Online ahead of print]Tang B, Buldyrev SV, … Giovambattista N
  • We perform molecular dynamics (MD) simulations of a water capillary bridge(WCB) expanding between two identical chemically heterogeneous surfaces. The model surfaces, based on the structure of silica, are hydrophobic and are decorated by a hydrophilic (hydroxylated silica) patch that is in contact with the WCB. Our MD simulations results, including the WCB profile and forces induced on the walls,…
  • Present and Future of Bronchopulmonary Dysplasia. [Review]
    J Clin Med. 2020 May 20; 9(5)Bonadies L, Zaramella P, … Baraldi E
  • Bronchopulmonary dysplasia (BPD) is the most common respiratory disorder among infants born extremely preterm. The pathogenesis of BPD involves multiple prenatal and postnatal mechanisms affecting the development of a very immature lung. Their combined effects alter the lung's morphogenesis, disrupt capillary gas exchange in the alveoli, and lead to the pathological and clinical features of BPD. …
  • Symmetrization of Thin Freestanding Liquid Films via a Capillary-Driven Flow. [Journal Article]
    Phys Rev Lett. 2020 May 08; 124(18):184502.Bertin V, Niven J, … Dalnoki-Veress K
  • We present experiments to study the relaxation of a nanoscale cylindrical perturbation at one of the two interfaces of a thin viscous freestanding polymeric film. Driven by capillarity, the film flows and evolves toward equilibrium by first symmetrizing the perturbation between the two interfaces and eventually broadening the perturbation. A full-Stokes hydrodynamic model is presented, which acco…
  • Melanoma in the liver: Oxidative stress and the mechanisms of metastatic cell survival. [Journal Article]
    Semin Cancer Biol. 2020 May 16 [Online ahead of print]Obrador E, Salvador R, … Estrela JM
  • Metastatic melanoma is a fatal disease with a rapid systemic dissemination. The most frequent target sites are the liver, bone, and brain. Melanoma metastases represent a heterogeneous cell population, which associates with genomic instability and resistance to therapy. Interaction of melanoma cells with the hepatic sinusoidal endothelium initiates a signaling cascade involving cytokines, growth …
  • Hollow mesoporous silica with a hierarchical shell from in situ synergistic soft-hard double templates. [Journal Article]
    Nanoscale. 2020 May 21; 12(19):10863-10871.Wang J, Pan M, … Zhu L
  • Traditional methods for the construction of hollow particles with a hierarchical shell mainly rely on complicated chemical routes and removal of the templates. Herein, hollow mesoporous silica particles with a sphere-on-sphere (SOS) structure were successfully synthesized via a one-pot method using a novel "in situ synergistic soft-hard double template" strategy, that is, styrene (St) droplets as…
  • A Highly Aligned Nanowire-Based Strain Sensor for Ultrasensitive Monitoring of Subtle Human Motion. [Journal Article]
    Small. 2020 May 10 [Online ahead of print]Tang N, Zhou C, … Haick H
  • Achieving highly accurate responses to external stimuli during human motion is a considerable challenge for wearable devices. The present study leverages the intrinsically high surface-to-volume ratio as well as the mechanical robustness of nanostructures for obtaining highly-sensitive detection of motion. To do so, highly-aligned nanowires covering a large area were prepared by capillarity-based…
  • Modulatory effect of chemokines on porcine endometrial stromal and endothelial cells. [Journal Article]
    Domest Anim Endocrinol. 2020 Jul; 72:106475.Złotkowska A, Andronowska A
  • The endometrium undergoes cyclical changes during the estrous cycle and pregnancy. These alterations are controlled by various factors, including cytokines. The present study aimed to screen the effect of several chemokines (CCL2, CCL4, CCL5, CCL8, CXCL2, CXCL8, CXCL9, CXCL10, and CXCL12) on endometrial stromal and endothelial cells. Real-time PCR analysis revealed mRNA expression of all examined…
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