• The nucleation process is bypassed under certain conditions, such as in spinodal decomposition, glass transition, and gelation. (iisc.ac.in)
  • Polymorphic phase transitions can occur via nucleation and growth or a cooperative transition mechanism. (aiche.org)
  • The system with the bulkier side chains do not exhibit rotational motion even at high temperatures and displays nucleation and growth, while the one containing slightly less bulkier side chains exhibit fully rotational motion and displays cooperative transition. (aiche.org)
  • They (see figure) indicates an α and β phase transition in titanium at 870°C, pre-ignition reactions, the formation of a single intermediate phase in only 0.5 seconds after the ignition, and after a delay of 2 seconds (during excess heating of 2000°C) the rapid nucleation and growth of Ti 3 SiC 2 . (ill.eu)
  • In order to further our understanding of the behavior and properties of metastable liquids various topics are addressed: the statistical mechanics of constrained ensembles and the thermophysical properties of metastable systems, rigorous theories of nucleation and the transition between nucleation and growth and spinodal decomposition. (purdue.edu)
  • For example, we have recently shown that liquid-to-vapor liquid nucleation is more appropriately described by an "activated instability", with the subsequent bubble growth phase occurring via a mechanism consistent with an unstable system. (purdue.edu)
  • The phase transformation dynamics, which involve the nucleation and propagation of a hydrogen-rich region, are dependent on absolute time (aging) and involve intermittent dynamics (avalanching). (escholarship.org)
  • The kinetic roughening transition occurs around 85°C. The nucleation and growth mechanism for crystallization does not work below 85°C, since the growth face is rough. (engineering.org.cn)
  • The crystal thickness demonstrates two linear dependences on inverse supercooling and a transition from one dependence to the other has been observed around = 65°C. Each of the two dependences obeys the nucleation theory in the high and low supercooling ranges, respectively. (engineering.org.cn)
  • It is proposed that the unifying concept for all these transformations is cluster kinetics and dynamics. (iisc.ac.in)
  • Our experimental and theoretical approach provides a general framework for designing and optimizing phase transformations for single nanocrystals in reactive environments. (escholarship.org)
  • Similar to martensitic transition studied in metallurgy, cooperative transition exhibits low transition barrier, ultrafast kinetics, and structural reversibility. (aiche.org)
  • We demonstrate the efficacy of our data-driven framework across magneto-structural phase transitions by generating a magneto-elastic ML-IAP for α-iron. (sandia.gov)
  • We are investigating the fundamental optical, electronic, and structural properties of the Ge 2 Sb 2 Te 5 (GST) phase-change alloy that is used as the active medium in rewritable optical memory disks, and in current-switched phase-change random access memories now under development. (mrs.org)
  • Of particular interest is the micro- or nano-structural basis for the rapidly reversible, thermally-induced atomic scale rearrangements that underlie the phase change phenomenon. (mrs.org)
  • The technique of fluctuation electron microscopy (FEM), which is carried out in the TEM, has been used to probe the existence of nanometer-scale structural order in the amorphous phase. (mrs.org)
  • They show some changes, which allowed us to first track and describe the structural changes (in both directions under the effect of heat treatment) accompanying the phase transition between 358 and 383K observed by DSC, Rx. (academicjournals.org)
  • These colloids show unique phase behaviour such as empty liquids 26 , but their size is typically on the order of nanometers-too small for direct imaging. (nature.com)
  • Professor Corti's research focuses on understanding the thermophysical and kinetic properties of a variety of soft condensed-phase systems, including liquids and colloidal dispersions. (purdue.edu)
  • The examples may include but are not limited to: kinetics in biochemistry and catalysis, atomic force microscopy (AFM), electrochemistry, calorimetry, optical spectroscopy, online databases and literature management. (lu.se)
  • However, they usually exhibit inferior thermodynamic stability and sluggish Na + kinetics due to the unwanted phase transitions and large Na + -ionic radius. (rsc.org)
  • Thermodynamic description of the phase transition. (uninsubria.eu)
  • The former is known to be the common mechanism in most polymorphic transitions. (aiche.org)
  • m spinel phases, a stable layered/spinel intergrowth nanocomposite Na 0.5 [Ni 0.2 Co 0.15 Mn 0.65 ]O 2 is rationally designed and successfully prepared via a co-precipitation route and a subsequent solid-state reaction, and the triphase synergy in this layered/spinel nanocomposite is demonstrated. (rsc.org)
  • Furthermore, the reaction kinetics of the applied oxygen carrier materials are investigated and directly contribute to CFD-modelling. (tugraz.at)
  • These aim at the development and validation of a flexible CFD-based multi-physics toolbox for multiphase reactive flows in chemical looping technologies, which is able to describe fluid dynamics, particle motion, homogeneous and heterogeneous reaction kinetics as well as heat transfer in the system. (tugraz.at)
  • The interplay between phase separation and kinetic arrest is important in supramolecular self-assembly, but their effects on emergent orientational order are not well understood when anisotropic building blocks are used. (nature.com)
  • The kinetics of phase separation is investigated by a Molecular Dynamics method, where hydrodynamic effects due to the solvent are included via the multiparticle collision dynamics method. (springer.com)
  • The simulations on the kinetics of phase separation were carried out at HERMIT (HLRS). (springer.com)
  • The assembly of IBs is driven by liquid-liquid phase separation promoted by interactions between the viral nucleoprotein N and the phosphoprotein P. We recently demonstrated that cyclopamine (CPM) inhibits RSV multiplication by disorganizing and hardening IBs. (bvsalud.org)
  • High temperatures, significant thermal stress, ongoing phase transitions and mechanical abrasion burden the applied oxygen carriers. (tugraz.at)
  • Doping increases the tendency of the disorder to order phase transition and enhances oxygen desorption rate during oxygen desorption step. (elsevierpure.com)
  • We are currently developing theoretical and simulation methods to predict the magnitude and range of entropic forces between particles and between particles and surfaces of various shapes, to investigate phase separations in model colloidal dispersions, and to estimate coagulation/deposition rates and the kinetics of the phase transitions exhibited by entropically controlled dispersions. (purdue.edu)
  • Responsive Hydrogel Colloids: Structure, Interactions, Phase Behaviour and Equilibrium and Non-equilibrium Transitions of Microgel Dispersions. (lu.se)
  • After gradual cooling, the reversibility of the alteration may be detected by the variation 1'etude frequencies and relative heights of the lines connected to groups of bands NO 2 , NH and CH. The results show that the transformation kinetics is influenced by the operational conditions. (academicjournals.org)
  • The student will acquire the criteria to understand the tendence of an element to react, the way in which this happens with respect to the energy exchanges and to the kinetics, and the behavior of chemical systems in aqueous solution. (uninsubria.eu)
  • Differential Scanning Calorimeters (DSC) measure temperatures and heat flow associated with thermal transitions in a material. (dksh.com)
  • The compound undergoes a first-order phase transition at temperatures of 610 +/- 10 degrees C. The high temperature phase CsGaSe2-mC16 also crystallizes in the monoclinic space group C2/c (No. 15) with a = 7.651(3) angstrom, b = 12.552(4) angstrom, beta = 6.170(3) angstrom, beta = 113.62(4)degrees, V = 542.9(5) angstrom(3), and Z = 4 (powder data, ambient temperature). (uni-regensburg.de)
  • This review mainly focuses on recent studies that apply this method to improve the cooling performance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transition temperatures, and widening transition temperature spans, which indicate that further progress can be made in the application of this method. (engineering.org.cn)
  • However, elucidating three-dimensional nanoscale grain morphology, kinetics, and strain under realistic conditions is challenging. (lu.se)
  • Layered sodium transition-metal oxides, Na x MeO 2 , with large theoretical capacity are regarded as an important class of cathode materials for sodium-ion batteries (SIBs). (rsc.org)
  • Besides, the full-cells using this nanocomposite as the cathode and hard carbon as the anode exhibit long-term cycle-life and high-power properties, indicating the expected merits of layered/spinel mixed phases. (rsc.org)
  • Colloid polymer mixtures exhibit vapor-liquid like and liquid-solid like phase transitions in bulk suspensions, and are well-suited model systems to explore confinement effects on these phase transitions. (springer.com)
  • PL blinking kinetics exhibit very broadly distributed timescales. (lu.se)
  • Nanostructuring active particles can yield faster charging/discharging kinetics, increased lifespan and record catalytic activities. (escholarship.org)
  • This is the liquid phase: particles are still in contact but are able to move around each other. (opentextbc.ca)
  • The rate of the latent heat transfer at first-order phase transitions is calculated. (bgu.ac.il)
  • Typically, quantities like heat conductivity or the latent heat released or consumed during phase transitions do not only depend on temperature but also on the respective phase. (wias-berlin.de)
  • In situ high-temperature X-ray diffraction experiments were performed to study this phase transition. (uni-regensburg.de)
  • Substances can change phase - often because of a temperature change. (opentextbc.ca)
  • However, single field tuning with few tunable parameters usually obtains an excellent performance in one specific aspect at the cost of worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transition temperature range and introducing hysteresis. (engineering.org.cn)
  • Villanueva Valencia J. R., Tsimtsirakis E., Krueger S., Evilevitch A., "Temperature-induced DNA density transition in phage λ capsid revealed with contrast-matching SANS. (lu.se)
  • Strain and interactions at grain boundaries during solid-phase crystallization are known to play a significant role in the functional properties of polycrystalline materials. (lu.se)
  • This will allow studies of the kinetics of surface mobility and phase transitions as a function of filler type, surface interaction, and constraint. (stonybrook.edu)
  • The electric field dynamics of interphase boundaries is studied as an example of the applicability of the relaxation kinetics and the front velocity appears to be of the threshold field type. (bgu.ac.il)
  • The joint motion during this phase allows the transfer of weight onto the new stance phase leg while attenuating shock, preserving gait velocity, and maintaining stability. (medscape.com)
  • Previously, we reported [1] the unambiguous determination of the optical band gaps of amorphous, fcc and hexagonal phases of GST by proper analyses of optical data (SE, IR absorption spectra, and photoconductivity). (mrs.org)
  • Schematic picture of a hexagonal phase with anionic DNA and rodlike cationic CTA micelles which are distorted to reduce the electrostatic free energy. (lu.se)
  • From In situ microscopy, single crystal X-ray diffraction, Raman and NMR spectroscopy and molecular simulations we establish a molecular design rule that rotating bulky side chains trigger cooperative transition. (aiche.org)
  • A hydrogen-rich surface layer dominates the crystal strain in the hydrogen-poor phase, while strain inversion occurs at the cube corners in the hydrogen-rich phase. (escholarship.org)
  • Sindee Simon , Distinguished Professor of Chemical and Biomolecular Engineering, elected for transformational contributions to materials physics and chemistry, particularly for novel experiments and modeling of non-equilibrium behavior of glasses and the impact of nanoconfinement on phase transitions and polymerization kinetics. (ncsu.edu)
  • An exemplar is a fer- romagnetic material like iron, while familiar and widely used, we lack a simulation capability to characterize the interplay of structure and magnetic effects that govern material strength, ki- netics of phase transitions and other transport properties. (sandia.gov)
  • According to Fig. 1-a, Fe, Al, Ca, and Ti containing compounds constituted the major phases of the sample. (researchgate.net)
  • Ag-rich ) phase formation and consequently the matrix β ( Cu-rich ) depletion. (scirp.org)
  • Here we study the hydriding phase transformation in individual palladium nanocubes in situ using coherent X-ray diffractive imaging. (escholarship.org)
  • Electronic and Atomic Structure of Chalcogenide Phase Change Material Ge2Sb2Te5. (mrs.org)
  • Meeting the Laboratory's missions requires that researchers understand how materials behave under high pressure or forces, specifically, how their atomic structure changes, how quickly, if kinetics is involved in those changes, and what new material properties emerge. (llnl.gov)
  • Association of Coping Strategies With Symptoms of Burnout in Young Football Players in a Career Transition Phase: Are Professionalization and Occurrence of Injuries Mediating Factors? (humankinetics.com)
  • Parallels and Contrasts in the Properties of Ge-Sb-Te Phase Change Alloys and Chalcogenide Glasses . (mrs.org)
  • and (3) parallels and contrasts in the developing understanding of the phase-change chalcogenide alloys. (mrs.org)
  • Other progress including improving cyclability of FeRh alloys by introducing second phases and realizing a large reversible barocaloric effect by hybridizing carbon chains and inorganic groups is described in brief. (engineering.org.cn)
  • The first 2 gait phases (0-10% GC) occur during initial double support. (medscape.com)
  • Applications to materials processing and pharmaceuticals manufacture are among the uses for phase transition dynamics investigated with the methods of population balance modeling for clustering processes. (iisc.ac.in)
  • Using population balance modeling, we outline how phase transition processes can be quantitatively modeled by cluster size distributions evolving in time. (iisc.ac.in)
  • These phases include initial contact and the loading response. (medscape.com)
  • It is shown that these anomalies and differences in yield limits of the phases can lead to essential change of pressure in the center of the layer in comparison with its value in absence of phase transition, but under equal external load. (epjap.org)
  • In our work, we discover cooperative transition for the first time in single crystals of two different organic semiconductors. (aiche.org)
  • No amorphous contribution to the diffraction patterns was detected and, therefore, it is unlikely that a liquid phase plays an important role in the SHS. (ill.eu)
  • By understanding the molecular origin of different mechanisms of polymorphic transition, we can tailor the molecular structure for designing novel shape memory electronics with fast switching function modulation. (aiche.org)
  • The gait cycle (GC), in its simplest form, consists of stance and swing phases. (medscape.com)
  • When the system is quenched by increasing the attraction strength, non-equilibrium structures form deep within the region of phase instability. (nature.com)
  • It is found that in the pressure distribution near the phase boundaries anomalies emerge in the form of a "step" or a local maximum caused by volume jumps at phase transition. (epjap.org)
  • The preparation phase is further broken up into general and specific preparation of which general preparation takes over half. (wikipedia.org)
  • The disorder modifies the dynamical transition rates of the system in an anisotropic fashion, giving rise to a new fixed point. (edpsciences.org)
  • State transition and phase equilibria. (uninsubria.eu)
  • Concurrently, the TCTP globular domain becomes destabilized, transitioning into a molten-globule state. (bvsalud.org)
  • To sustain life, at birth the lungs undergo a rapid transition from an organ filled with fluid unable to perform sufficient exchange for an air-filled organ that is capable of performing all gas exchange 1 . (bvsalud.org)
  • In this transition, most of the fluid is eliminated through the upper airways and oral cavity, and the remainder through the process of labor and passage through the vaginal canal. (bvsalud.org)
  • Specifically, passive structures etched into the walls of the container can create entropic force fields of sufficient range and magnitude so that the motion and position of large colloids can be controlled, thereby generating a variety of two-dimensional fluidlike and solidlike phases on chosen templates. (purdue.edu)
  • A three-dimensional phase-field model is used to interpret the experimental results. (escholarship.org)
  • The combined potential energy surface yields excellent agreement with first-principles magneto-elastic calculations and quantitative predictions of diverse materials properties including bulk modulus, magnetization, and specific heat across the ferromagnetic-paramagnetic phase transition. (sandia.gov)
  • We find that the Johnson-Mehl-Avrami-Kolmogorov theory, which describes the average kinetics of polycrystalline films growth, can be applied to the single grains as. (lu.se)
  • Calculate the energy change needed for a phase change. (opentextbc.ca)