• Based on the calculated specta and the structural analysis, more profound understanding of the silica high-temperature phase is given. (sissa.it)
  • While praised for its sound theoretical approach, the first volume remained at considerable distance from being able to explain experimental results in things like structural phase transitions. (wikipedia.org)
  • This schematic shows the configuration for structural phase transition on a monolayer of molybdenum ditelluride (shown as yellow and blue spheres), which is anchored by metal electrodes (top gate and ground). (materialstoday.com)
  • We show, for the first time, that it is possible to inject electrons to drive structural phase changes in materials,' said study principal investigator Xiang Zhang, senior faculty scientist at Berkeley Lab's Materials Sciences Division and a professor at the University of California, Berkeley. (materialstoday.com)
  • Switching a material's structural configuration from one phase to another is the fundamental, binary characteristic that underlies today's digital circuitry. (materialstoday.com)
  • The classic approach to driving the structural transition of materials involves heating them to above 500°C. Such methods are energy-intensive and not feasible for practical applications, while the excess heat can significantly reduce the life span of components in integrated circuits. (materialstoday.com)
  • This will be followed by presentation of results on structures using synchrotron X-rays and neutrons that establish the nature of structural changes on size reduction. (aps.org)
  • We believe that the availability of time-resolved structural probes with sub-picosecond time-resolution which employ X-ray diffraction, would enable groundbreaking work by allowing the interrogation of rapidly changing structures. (lu.se)
  • We use solution SAXS to investigate the structure and long-range structural phase-transition of the encapsidated genomes under variable environmental parameters. (lu.se)
  • Realizing phase transitions based on the optical parametric processes can provide unique opportunities for sensing. (nature.com)
  • Existing staff will be temporarily assigned to assist in the implementation of the new processes during the transition period through 1 October 2016. (who.int)
  • This type of work will yield understanding of how light induced processes change the structure of matter. (lu.se)
  • These diverse materials may exhibit time-dependent structures under transient or out-of-equilibrium conditions resulting from for example self-assembly processes, phase transitions or in response to external fields, such as flow. (lu.se)
  • Driven nonlinear resonators provide a fertile ground for phenomena related to phase transitions far from equilibrium, which can open opportunities unattainable in their linear counterparts. (nature.com)
  • Responsive Hydrogel Colloids: Structure, Interactions, Phase Behaviour and Equilibrium and Non-equilibrium Transitions of Microgel Dispersions. (lu.se)
  • In the thermodynamic limit, the steady states of open quantum many-body systems can undergo nonequilibrium phase transitions due to a competition between coherent and driven-dissipative dynamics. (duke.edu)
  • Here, we show that optical parametric oscillators (OPOs) can undergo second-order phase transitions in the spectral domain between degenerate and non-degenerate regimes. (nature.com)
  • But also time and space can undergo a phase transition, as the physicists Steven Hawking and Don Page pointed out in 1983. (sciencedaily.com)
  • Here, by using first-principles molecular dynamics simulations, we studied the local structures in the liquid and amorphous SST at various temperatures. (osti.gov)
  • The barriers of internal rotation are defined by semi-empirical method AM1 (Hy-perChem) and the conformational analysis of the p-n -propyloxy- o -hydroxybenzylidene- p' -butylaniline molecule in crystal condition, nematic phase, isotropic liquid and at the temperatures of phase transitions: crystal → nematic, nematic → isotropic liquid. (ac.ru)
  • Magnetic structures at ultralow temperatures and their rearrangements in phase transitions. (desy.de)
  • Literature shows a variety of crystal phase transition temperatures and often a spread of the transition over tens of degrees Kelvin. (lu.se)
  • We propose that upon cooling from 160 to 140 K, domains of the crystal containing fewer defects stay in the tetragonal phase longer than highly defected domains that readily transform to the high bandgap orthorhombic phase at higher temperatures. (lu.se)
  • We studied structure and thermodynamic properties of cubic and tetragonal phases of pure uranium and U-Mo alloys using atomistic simulations: molecular dynamics and density functional theory. (hse.ru)
  • For instance, in phase transition-based detectors and transition-edge sensors 27 , the reset time (return time to the critical bias point) can be significantly reduced using an ultrafast nonlinear process compared to thermodynamic transitions. (nature.com)
  • In addition, Confocal Laser Scanning Microscopy analyses highlighted that NPs interact with cubic and lamellar phases according to two distinct mechanisms, related to the different structures of the lipid assemblies. (lu.se)
  • The crystal structure of a new crystalline phase of isobutyl-6-amino-5-cyano-2-methyl-4-phenyl-4 H -pyran-3-carboxylate was accurately determined by single-crystal X-ray diffraction analysis. (iucr.org)
  • The crystalline structure of deposited and annealed films was deduced by SE and supported by X-ray diffraction (XRD). (springer.com)
  • A view of the crystal structure of the tetragonal perovskite PbTiO 3 at 298 K, with displacement ellipsoids drawn at the 90% probability level. (iucr.org)
  • We explain this inconsistency by demonstrating that the temperature of the tetragonal-to-orthorhombic phase transition in methylammonium lead triiodide depends on the concentration and nature of local defects. (lu.se)
  • The existence of relatively pure tetragonal domains during the phase transition leads to drastic photoluminescence enhancement, which is inhomogeneously distributed across perovskite microcrystals. (lu.se)
  • Raman Spectroscopy is a non-destructive chemical analysis technique which provides detailed information about chemical structure, phase and polymorphy, crystallinity and molecular interactions. (horiba.com)
  • The presence of competing interactions (that often have a comparable energy scale) leads to presence of variety of phases in the manganites that can be tuned by substitution (hole concentration), pressure and magnetic field. (aps.org)
  • In Chapter 3, I show how the performance of the potential and how it can be used to calculate infrared and Raman spectra, focusing on the the calcuation of the spectra for high-temperature phase. (sissa.it)
  • Single crystal of 1 shows the temperature dependent phase transition around 140 K, where the crystal space groups change from P 2 1 / c (high temperature) to (low temperature), which is caused by the stabili zation of intermolecular interaction. (scirp.org)
  • K. Uemura, "Crystal Structure of cis -[PtCl 2 (PyCN) 2 ] (PyCN = 4-Cyanopyridine) Showing Temperature Dependent Single-Crystal-to-Single-Crystal Transformation," Advances in Materials Physics and Chemistry , Vol. 3 No. 1A, 2013, pp. 36-40. (scirp.org)
  • The crystal structure of SnSe is investigated through high-resolution synchrotron powder X-ray diffraction in the range 100-855 K. The temperature dependence of the lattice constants, fractional coordinates, site occupancy factors and atomic displacement parameters is studied. (iucr.org)
  • The main attention was paid to the metastable g0-phase that is formed in U-Mo alloys at low temperature. (hse.ru)
  • This fact simplifies significantly analysis of temperature evolution of crystal structure of embedded materials by X-rays and neutron diffraction. (hindawi.com)
  • It was revealed that the anatase TiO 2 film started to transform into rutile phase when the annealing temperature was up to 800 °C. In this paper, a constructive and effective method of monitoring the phase transition in ultrathin films by SE has been proposed when the phase transition is not so obvious analyzed by XRD. (springer.com)
  • In addition, direct hydrogenation of C 60 and C 70 has also been achieved without the usage of a catalyst by exposing solid-phase fullerenes to high-pressure hydrogen gas (0.5-30 kB) at elevated temperature (500-600 K) [ 4 ]. (hindawi.com)
  • iii) What is the kind of melting process parameters and heat treatment regimes that we have to use for production of the two-phase glasses with optimal combination of magnetic properties and dendrite structure? (hindawi.com)
  • This field of study seeks to unravel the secrets behind fascinating phenomena like magnetism, superconductivity , phase transitions, and Einstein condensate. (freescience.info)
  • Effects of microscopic confinement and layering of electronic structures of solids. (desy.de)
  • This is the time scale on which molecular dynamics, chemical reactions and phase transitions in solids occur. (lu.se)
  • Magnetic Properties and Thermal Dilatation Behavior and Crystal Structure of Fe(btz)2 (NCS)2 at 293 and 130 K," Inorganic Chemistry, Vol. 31, No. 24, 1992, pp. 4972-4979. (scirp.org)
  • The behavior of the system around the critical point is characterized by the order parameter (OP). Second-order phase transition displays continuity in the OP while exhibiting a discontinuity in the derivative of the OP. On the other hand, first-order transition is known to possess a discontinuous OP around the transition point. (nature.com)
  • These time-dependent or flow-dependent structures may in turn influence their viscoelastic behavior or vice versa and be triggered by instabilities. (lu.se)
  • C. Hu and U. Englert, "Space Filling versus Symmetry: Two Consecutive Crystal-to-Crystal Phase Transitions in a 2D Network," Angewandte Chemie International Edition, Vol. 45, No. 21, 2006, pp. 3457-3459. (scirp.org)
  • We show that the divergent susceptibility of the critical point is accompanied by spontaneous symmetry breaking and distinct phase noise properties in the two regimes, indicating the importance of a beyond nonlinear bifurcation interpretation. (nature.com)
  • But for symmetry reasons this would mean that gravitational theories should exhibit phase transitions too. (sciencedaily.com)
  • Landau theory describes these transitions by considering the order parameter, which characterizes the change in symmetry at different phases. (freescience.info)
  • The results will contribute to improve the fundamental knowledge on lipid interfaces and will provide new insights on the biological function of phase transitions as a response strategy to the exposure of NPs. (lu.se)
  • Phase transitions occur when a material undergoes a change in its physical state, such as from solid to liquid or from magnetic to non-magnetic. (freescience.info)
  • The physical properties of the nanostructured manganites are very distinct and different from that seen in related nanostructured transition metal ferromagnetic oxides like the cobaltates. (aps.org)
  • The Dynamics of First Order Phase Transitions', by J.D. Gunton, M. San Miguel [es] and P.S. Sahni. (wikipedia.org)
  • We also predict the occurrence of first-order spectral phase transitions in coupled OPOs. (nature.com)
  • Some of these defects, left over from the GUT phase transition in the early universe, take on all the properties of a single, lonely magnetic pole. (space.com)
  • Interestingly, the primary change occurs in the lattice structures on size reduction that weakens the orthorhombic distortion. (aps.org)
  • Our study reveals the role of Sc atoms in the liquid and amorphous structure, paving the way for the application of Sc-based phase-change memory. (osti.gov)
  • The morphology and composition of four types of two-phase alkali borosilicate glasses with magnetic atoms prepared by inductive melting have been studied. (hindawi.com)
  • Zhao and coworkers report that a particular Scandium organometallic buckyballs can bind as many as 11 hydrogen atoms per transition metal, which gives the maximum retrievable H 2 storage density 9 wt% [ 14 ]. (hindawi.com)
  • Molecular arrangements and their electronic structure from gases to liquids. (desy.de)
  • It was reflected that the fast crystallization is because Sc stabilizes the 4-fold rings which act as precursors of nuclei in the amorphous phase. (osti.gov)
  • The findings reveal that Sc-centered configurations are almost in the form of stable octahedral clusters, which enhances the local order of the amorphous phase. (osti.gov)
  • The neighboring crystal structures don't neatly align, leading to visible defects in the ice. (space.com)
  • As a promising alternative, the interfacial area transport equation (IATE) is developed to model the interface structure mechanistically. (purdue.edu)
  • Critical Point Statistical Mechanics and Quantum Field Theory', by G.A. Baker, Jr. Volume 10: (1986) ISBN 0122203100 'Surface Structures and Phase Transitions - Exact Results', by D.B. Abraham. (wikipedia.org)
  • phase transitions in quantum field theories are well known. (sciencedaily.com)
  • Landau theory is a cornerstone in condensed matter physics, providing insights into phase transitions. (freescience.info)
  • Recent developments have shown strong connections between phase transitions in statistical physics and answers to these type of questions. (google.com)
  • Analyzing the structure of inhomogeneities, from minerals to biological tissues. (ornl.gov)
  • Emergencies Programme to initiate the transition to the new structure across the three levels of the Organization. (who.int)
  • The target is 1 September 2016 for establishing the new structure for the WHO Health Emergencies Programme in headquarters and the regional offices. (who.int)
  • The C*-Algebraic Approach to Phase Transitions', by G.G. Emch. (wikipedia.org)
  • General also approved a human resources process for aligning existing staff to the new structure, which will be implemented concurrently at headquarters and regional offices and which is scheduled for completion by 1 October 2016. (who.int)
  • Here, we consider Markovian systems and elucidate structures of the Liouville superoperator that generates the time evolution. (duke.edu)
  • Structure Evolution of Chemically Degraded ZIF-8. (ornl.gov)
  • Random Structures and Algorithms , 55 (1), 3-55. (tue.nl)
  • Our measurements confirmed magnetic properties of these two-phase (nonporous) glasses [ 29 ], but an existence of dendrite structure formed by chemically unstable phase was under question. (hindawi.com)
  • The first principles total energy and electronic structure calculations were carried out within the framework of DFT [ 17 ] with a plane wave basis set and pseudopotentials for the atomic cores, as implemented in the Vienna ab initio simulation package (VASP) [ 18 , 19 ]. (hindawi.com)
  • Phase transition marks a universal qualitative regime change in system properties as the control parameter is varied around a critical/transition point 26 . (nature.com)
  • These properties enable tuning of electronic, optical, chemical and catalytic functionality via engineering structure, doping, and phase transitions. (mrs.org)
  • Their properties are dependent on the crystal structure. (lu.se)
  • Phase Transitions and Critical Phenomena is a 20-volume series of books, comprising review articles on phase transitions and critical phenomena, published during 1972-2001. (wikipedia.org)
  • Volume 1: Exact Results (1972) ISBN 0122203011 'Introductory Note on Phase Transitions and Critical Phenomena', by C.N. Yang. (wikipedia.org)
  • Volume 5b (1976) ISBN 0122203054 'Monte Carlo Investigations of Phase Transitions and Critical Phenomena', by K. Binder. (wikipedia.org)
  • The transition from an operating nuclear facility to the decommissioning phase is critical in the life cycle of every facility. (oecd-nea.org)
  • A first of a kind experimental database in churn-turbulent, annular, and wispy annular flow with two-dimensional spatial distributions is established, which provides the experimental basis for the multi-field two-phase flow model development. (purdue.edu)
  • The most promising method for obtaining such objects is the laser printing method due to the possibility of controlling the resulting structure by experimental conditions. (hse.ru)
  • The conventional flow-regime-based IAC correlations intrinsically cannot predict the dynamic flow structure change and would introduce a discontinuity and numerical instability to system codes. (purdue.edu)
  • Scientific network blog on the perspectives on technological change and energy transitions focused around feasibility of global transitions, speed of technological change, expansion of nuclear and renewable power and phase-out of fossil fuels. (lu.se)
  • The idea of electron doping to alter a material's atomic structure is unique to 2D materials, which are much more electrically tunable compared with 3D bulk materials,' said study co-lead author Jun Xiao, a graduate student in Zhang's lab. (materialstoday.com)
  • USANS is designed for the study of hierarchical structures in natural and artificial materials. (ornl.gov)
  • The first results for nanocomposite materials on the basis of magnetic glasses containing the embedded ferroelectrics KH 2 PO 4 demonstrate the effect of applied magnetic field on the ferroelectric phase transition. (hindawi.com)
  • 2D materials and Low-Dimensional HOIP electronic, chemical and catalytic functionality via engineering structure, doping, and phase transitions. (mrs.org)
  • In a study published in Nature , the researchers have found a way to reversibly change the atomic structure of a two-dimensional (2D) material by injecting, or 'doping', it with electrons. (materialstoday.com)
  • By adding electrons into a material, the overall energy goes up and will tip off the balance, resulting in the atomic structure re-arranging to a new pattern that is more stable. (materialstoday.com)
  • Thus, the natural technique for studying evolving atomic structures is through X-ray diffraction. (lu.se)
  • Since their discovery, X-rays have been the dominant tool for determining atomic structures. (lu.se)
  • Fundamentals of Crystallography: the theory behind crystal structure solution. (iucr.org)
  • abstract = "Using transmission electron microscopy, we studied the structures and compositions of Fe sulfides within cells of magnetotactic bacteria that were collected from natural habitats. (elsevierpure.com)
  • But we are interested in the question, which phase transitions are possible for time and space and how the mathematical structure of spacetime can be described" says Grumiller. (sciencedaily.com)
  • That dramatic phase transition could have left defects - tiny knots, whorls and lines in the fabric of space-time itself. (space.com)
  • The superoperator structure can be used to bound gaps from below, showing that, in a large class of systems, dissipative phase transitions are actually impossible and that the convergence to steady states follows an exponential temporal decay. (duke.edu)
  • Phase-change material Sc 0.2 Sb 2 Te 3 (SST) can remarkably boost the writing speed of memory devices due to the extremely fast crystallization. (osti.gov)
  • This will include destabilization of the charge ordered state, change in the nature of the ferromagnetic transition and non-linear conduction that arises in the nanostructured films due to presence of a large number of grain boundaries. (aps.org)