• High-pressure synchrotron based angle dispersive x-ray diffraction (ADXRD) studies were carried out on SmGdO3 (SGO) up to 25.7GPa at room temperature. (arxiv.org)
  • By employing coarse-grained molecular dynamics simulations, we obtained the temperature-pressure phase diagrams of a dipalmitoylphosphatidylcholine bilayer, which exhibits a gel phase and a fluid phase, with variation of the C 60 versus lipid ratios. (rsc.org)
  • The main transition temperature, T m , remains almost unchanged with the addition of C 60 below a ratio of 4.7%, while a 2 K decrease of T m is observed at a ratio of 6.4% under various pressures. (rsc.org)
  • Synchrotron-based high-pressure single-crystal X-ray diffraction experiments were conducted on synthetic pure clinoferrosilite, Fe 2 Si 2 O 6 , at room temperature to a maximum pressure of 45 GPa. (geoscienceworld.org)
  • The temperature and frequency dependence of the complex dielectric susceptibility of a ferroelectric liquid crystal (FLC) near the smectic-C*-smectic-A phase transition has been calculated using the generalized Landau model. (tcd.ie)
  • Studies of this transition based on lattice QCD have demonstrated that it would have taken place at a temperature of approximately 155 MeV, and would have been a smooth crossover transition. (wikipedia.org)
  • Bohler, R 2014, ' High temperature phase transitions of actinide dioxides ', Doctor of Philosophy, Delft University of Technology. (tudelft.nl)
  • Also by using this model, we estimate the inverse susceptibility, the entropy, the heat capacity and the thermal expansion as a function of temperature close to the phase transition. (metu.edu.tr)
  • The inverse relaxation time and the activation energy as a function of temperature are also calculated close to the phase transition. (metu.edu.tr)
  • Calculation of the damping constant of soft mode is performed in the temperature range of 400- 490 degrees C close to the ferroelectric- paraelectric transition (T-C= 493 degrees C) in PbTiO3. (metu.edu.tr)
  • It seems reasonable to suppose that in the evolution process of universe, with the decreasing of temperature our world underwent a phase transition of time, a kind of second order phase transition. (scirp.org)
  • Belenkaya, IV, Matvienko, AA & Nemudry, AP 2014, ' In situ high-temperature diffraction study of the perovskite-brownmillerite phase transition in SrCo 0.8 Fe 0.2 O 2.5 in isostoichiometric mode ', Doklady Physical Chemistry , vol. 459, no. 2, pp. 185-189. (tau.ac.il)
  • The phase transitions of binary lipid mixtures are studied by a combination of Peltier-element-based adiabatic scanning calorimetry (pASC) and quartz crystal microbalance with dissipation monitoring (QCM-D). pASC, a novel type of calorimeter, provides valuable and unambiguous information on the heat capacity and the enthalpy, whereas QCM-D is proposed as a genuine way of determining phase diagrams by analysing the temperature dependence of the viscosity. (hindawi.com)
  • The HTK 1200N is an advanced high-temperature chamber with a robust design for in-situ X-ray diffraction studies in different atmospheres up to 1200 °C. Its environmental heater guarantees excellent uniformity of the sample temperature. (anton-paar.com)
  • This work is conducive to the research into chiral high- temperature reversible plastic phase-transition materials, and promotes the development of multi-functional phase-transition materials. (bvsalud.org)
  • We analyze the corresponding linearized mean field equations with respect to estimating the phase transition temperature. (lu.se)
  • 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 electroweak phase transition marks the moment when the Higgs mechanism first activated, ending the electroweak epoch. (wikipedia.org)
  • Particle physics models which account for dark matter or which lead to successful baryogenesis may predict a strongly first-order electroweak phase transition. (wikipedia.org)
  • Using the correspondence of the model and the Ising model for simple cubic lattice system, we study the time phase transition, the electroweak phase transition, and the BEC transition for time. (scirp.org)
  • Four types of the fields are found before the electroweak phase transition, after which there is only one type of Higgs field coming from the infinite correlation of the lattice time states, going with electromagnetic field and gravitowagnetic field. (scirp.org)
  • We should figure out the relation between electroweak phase transition and the occurrence of the Higgs. (scirp.org)
  • From a fundamental viewpoint, the interest in lipid phase behaviour stems from the nature and the thermodynamics of phase transitions, the mechanisms behind lipid miscibility and lateral phase separation, and the existence of critical phenomena [ 8 ]. (hindawi.com)
  • Photochemistry, photophysics, reaction kinetics and thermodynamics of transition metal compounds. (ku.dk)
  • We report on structural and compressibility features of both high-pressure phases as well as address thermal stability of HP- P 2 1 / c . (geoscienceworld.org)
  • Raman scattering experiments, carried out under variable pressure conditions, are a revealing probe of these phenomena due to the ability to tune the vibrational modes in and out of resonant decay channels, and to cycle through structural phase transitions [3] that often modify volume and/or surface disorder. (case.edu)
  • In order to stabilize reversible AFE-FE phase transition, NaNbO 3 is doped with a combination of heterovalent substitutions, although the underlying structural mechanism for the same is poorly understood. (lu.se)
  • Consequently, the presence of C 60 in the bilayer, with the ratio of C 60 less than 4.7%, will not influence the main transition behavior of the bilayer even under pressure as high as 1500 bar. (rsc.org)
  • We attribute this band to disorder and phonon mixing arising from antecedent behavior connected with nucleation of the high-pressure phase. (case.edu)
  • This feature resembles the broad band noted above for bulk ZnSe, and may be linked to mode-mixing, disorder, and antecedent phase-transition behavior - all with pressure dependencies changed from those in the bulk by the nanorod size- and shape- variations, and surfactant related effects. (case.edu)
  • Proposed on-line systems automatically group these similar intervals of execution into phases, where the intervals in a phase have homogeneous behavior and similar resource requirements. (ucsd.edu)
  • The calculations based on the generalized Landau model show that the frequency split of the two high-frequency modes is too low to be detected as two separate relaxation processes. (tcd.ie)
  • Especially, the mean field theory based on Landau phenomenological model is used to calculate P-T phase diagram of solid nitrogen. (metu.edu.tr)
  • I will discuss several examples of novel continuous phase transitions, primarily in 3+1-D, that are beyond the standard Landau paradigm of order parameter fluctuations. (pirsa.org)
  • Their approach more formally known as band-excitation piezoresponse force microscopy (BE-PFM), which was developed at ORNL, allowed the researchers to analyze the changes in resonant frequencies to betray a phase change. (materialstoday.com)
  • Below 3GPa, the Raman spectra of an ensemble of colloidal ZnSe nanorods exhibits two distinct peaks slightly higher and lower than the bulk TO(Gamma) and LO(Gamma) frequencies. (case.edu)
  • All these calculations indicate that the methods used for analysis can also be applied to some other molecular solids close to phase transitions. (metu.edu.tr)
  • 2023). Introduction: Phase Separation. (upenn.edu)
  • 2022). Sexually dimorphic RNA helicases DDX3X and DDX3Y differentially regulate RNA metabolism through phase separation. (upenn.edu)
  • In 1997, Simons and Ikonen renewed the interest in lipid phase studies, suggesting that lateral phase separation in biological membranes could be functionally important [ 3 ]. (hindawi.com)
  • Now, researchers at the Georgia Institute of Technology and Oak Ridge National Laboratory (ORNL) in the USA have developed a new non-destructive technique for investigating phase transitions using the acoustic response at the nanoscale detected with an electrically conductive atomic force microscope (AFM) probe could lead to novel ferroelectric materials. (materialstoday.com)
  • External stimuli can trigger a phase transition in various ferroelectric materials, such as lead magnesium niobite-lead titans, commonly known as PMN-PT, and used in high-resolution ultrasound transducers and pyroelectric devices (infrared detectors). (materialstoday.com)
  • In order to build a complete picture, the team also modeled the relaxor-ferroelectric materials using computational thermodynamic methods and demonstrated that these corroborated the experimental results revealing the existence of a phase transition and the evolution of a complex domain pattern. (materialstoday.com)
  • In a high-throughput study of the International Crystal Structure database, a dozen candidates for new ferroelectric materials were identified (PbAl 2 O 4 shown above), some which possess interesting novel properties such as large polarizations and multiferroism. (nist.gov)
  • Prediction of Weyl semimetal and antiferromagnetic topological insulator phases in Bi2MnSe4," npj Comp. (nist.gov)
  • 2023). Defining RNA oligonucleotides that reverse deleterious phase transitions of RNA-binding proteins with prion-like domains. (upenn.edu)
  • The Executive Board at its 150th session noted an earlier version of this report.1 The present report provides an update on the implementation of the Strategic Action Plan on Polio Transition (2018-2023)2 at the start of 2022, within the context of the coronavirus disease (COVID-19) pandemic. (who.int)
  • ADXRD results indicated a reversible pressure-induced phase transition from ambient monoclinic to hexagonal phase at about 8.9 GPa. (arxiv.org)
  • In recent years, there is a growing interest for new lead-free oxides with reversible antiferroelectric (AFE)-ferroelectric (FE) phase transition for high-power energy-storage applications. (lu.se)
  • Interactions between fullerenes and cells and effects on the main transition of lipid bilayers have attracted much attention in biophysics in recent years. (rsc.org)
  • The simulation results show that the critical area per lipid at the fluid-gel main phase transition boundary increases with the increasing ratios of C 60 . (rsc.org)
  • Both techniques give consistent phase diagrams, which compare well with literature results, showing their capability to map the phase behaviour of pure lipids as well as lipid mixtures. (hindawi.com)
  • This work can be considered as a departure point for further investigations on more complex lipid mixtures displaying relevant phases such as the liquid-ordered phase and solid-lipid interfaces with biologically functional importance. (hindawi.com)
  • In spite of the relevance of lipid-protein interactions, the phase behaviour of the lipid components of the cell membrane is believed to be of major importance to uncover some underlying principles behind the membrane function. (hindawi.com)
  • In turn, only recently surface-sensitive techniques have explored the phase behaviour of lipid layers in contact with solid surfaces, such as supported lipid bilayers (SLBs) and supported layers of vesicles (SLVs). (hindawi.com)
  • Information about the phase behaviour of supported lipid layers is relevant for lipid-based nanobiotechnology applications such as inmunosensors and lipid nanodevices [ 22 , 23 ]. (hindawi.com)
  • The phase transition occurs at the boundary between one crystal type and another and can amplify piezoelectric and dielectric effects. (materialstoday.com)
  • For example, we would like to know at which length-scale (be these sample or grain size), the phase transition might become suppressed due to boundary conditions. (materialstoday.com)
  • The main goal here is to establish a regularity theory for minimizing maps with a rather non-standard boundary condition at the sharp interface of the transition. (arxiv.org)
  • A phase boundary is precisely established in the phase space. (lu.se)
  • Above this boundary, LASSO perfectly recovers the signals with high probability. (lu.se)
  • Below this boundary, LASSO fails to recover the signals with high probability. (lu.se)
  • A topic of an interplay between disorder and competing electronic phases in multiband superconductors have recently got renewed interest in the context of iron-based superconductors. (aps.org)
  • The nature of the spin density wave (SDW) and charge density wave (CDW) in the mixed state of high-T c superconductors (HTS) is investigated by using the self-consistent Bogoliubov-de Gennes equations and an effective model Hamiltonian with competing SDW and d-wave superconductivity interactions. (ntnu.edu.tw)
  • 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 would now like to use this method to probe a wide range of phase transition-related phenomena in ferroelectric systems,' Bassiri-Gharb told Materials Today . (materialstoday.com)
  • After taking a course in High School Chemistry, students will have a solid understanding of several relationships between observable phenomena and the mathematics governing those phenomena. (varsitytutors.com)
  • The success of the Big Bang model led researchers to conjecture possible cosmological phase transitions taking place in the very early universe, at a time when it was much hotter and denser than today. (wikipedia.org)
  • While these three forces act differently today, it has been conjectured that they may have been unified in the high temperatures of the early universe. (wikipedia.org)
  • Physics portal Timeline of the early universe Chronology of the universe Phase transition Physics beyond the Standard Model Guth, Alan H. (wikipedia.org)
  • This is in the sequel of authors' paper \cite{LPW} in which we had set up a program to verify rigorously some formal statements associated with the multiple component phase transitions with higher dimensional wells. (arxiv.org)
  • Our discussion will be based on the results obtained for on a two-band model with quasi-two-dimensional Fermi surfaces, which allows for the coexistence region in the phase diagram between magnetic and superconducting states in the presence of intraband and interband scattering induced by doping. (aps.org)
  • Zero-Dimensional Sn-Based Enantiomeric Phase-Transition Materials with High-Tc and Dielectric Switching. (bvsalud.org)
  • Upon varying the ratio of mass to time-reversal breaking parameter the model undergoes a quantum phase transition from a topologically nontrivial semimetal to a trivial one. (harvard.edu)
  • Prior modeling of the phase transition was based on ad-hoc thermodynamic profiles. (nist.gov)
  • Through accurate ab initio calculations, included van der Waals interactions, we were able to map the thermodynamic profile and demonstrate a very small free energy transition barrier between the phases. (nist.gov)
  • Use the HTK 1200N for different types of in-situ X-ray investigations, including studies of phase transformations, structure determination, and studies of chemical reactions. (anton-paar.com)
  • High School Chemistry allows students an opportunity to apply mathematical and reasoning skills outside of math classes, developing an understanding for chemical systems and reactions on a molecular level. (varsitytutors.com)
  • It is shown that, although the dielectric response of the Sm-C* phase consists generally of four modes (soft, Goldstone, and two high-frequency polarization modes), only three bands appear in the dielectric-loss spectrum of FLC's at the Sm-A-Sm-C* phase transition. (tcd.ie)
  • Oscillations of high frequency appear, so strong limits no longer exist. (mpg.de)
  • Shortly after the Big Bang, the extremely high temperatures may have modified the character of these forces. (wikipedia.org)
  • However, at sufficiently high temperatures, protons and neutrons disassociate into free quarks. (wikipedia.org)
  • If the three forces of the Standard Model are unified in a Grand Unified Theory, then there would have been a cosmological phase transition at even higher temperatures, corresponding to the moment when the forces first separated out. (wikipedia.org)
  • Nevertheless, the transition temperatures are usually determined with a large uncertainty due to the typically broad transitions and the limited sensitivity of the experimental setups. (hindawi.com)
  • Literature shows a variety of crystal phase transition temperatures and often a spread of the transition over tens of degrees Kelvin. (lu.se)
  • Recent research indicates that many convex optimization problems with random constraints exhibit a phase transition as the number of constraints increases. (videolectures.net)
  • This modification identifies phase transitions for what they are, instead of classifying them into a new phase, which increases phase prediction accuracy. (ucsd.edu)
  • We show that Ca/Zr doping increases the average AFE phase (Pbma) fraction, however, the material remains as a composite of both FE (P2 1 ma) and AFE regions. (lu.se)
  • We show that Ca/Zr doping increases the average AFE phase (Pbma) fraction, however, the material remains as a composite of both FE (P21ma) and AFE regions. (lu.se)
  • otherwise, it fails with high probability. (videolectures.net)
  • Moreover, due to enormous suppression, quantum gravity effects are of- a rather high probability, such as in the case of an as- trophysical neutrino scattering off a massive source of classical gravitational field (like a star or a black hole). (lu.se)
  • The Secretariat continued to work with the priority countries3 to revise and implement their national plans for polio transition within the context of the COVID-19 pandemic, to sustain the gains of polio eradication, to avoid backsliding on immunization gains, and to strengthen emergency preparedness, detection and response capacities. (who.int)
  • This led to a fundamental change in the gate stack in 2008, the incorporation of high-dielectric-constant HfO 2 (ref. 2 ), which remains the material of choice to date. (nature.com)
  • Such a low effective oxide thickness and the resulting large capacitance cannot be achieved in conventional HfO 2 -based high-dielectric-constant gate stacks without scavenging the interfacial SiO 2 , which has adverse effects on the electron transport and gate leakage current 3 . (nature.com)
  • This work demonstrates that ultrathin ferroic HfO 2 -ZrO 2 multilayers, stabilized with competing ferroelectric-antiferroelectric order in the two-nanometre-thickness regime, provide a path towards advanced gate oxide stacks in electronic devices beyond conventional HfO 2 -based high-dielectric-constant materials. (nature.com)
  • High-throughput density functional perturbation theory and machine learning predictions of infrared, piezoelectric, and dielectric responses," npj Comp. (nist.gov)
  • The poor amorphous phase stability of GST mandates a high cooling rate in the order of 10 10 °C/s to ensure complete re-amorphization during melt quenching 39 , which coupled with their low thermal conductivity 40 stipulates a film thickness of around 100 nm or less. (nature.com)
  • This conclusion assumes the simplest scenario at the time of the transition, and first- or second-order transitions are possible in the presence of a quark, baryon or neutrino chemical potential, or strong magnetic fields. (wikipedia.org)
  • The persistence of metastable pyroxene up to pressures higher than expected and its feasible direct transformation to ilmenite are of special interest for understanding the dynamics of cold-subducting slabs. (geoscienceworld.org)
  • A transformation between the phases can be achived via pressure, gas adsorption, etc. (nist.gov)
  • Instead, it seems that my phase 2 rank, movies viewed, specificity and sensitivity are displayed. (berkeley.edu)
  • This is, for example, of paramount importance in ferroelectric thin films, where the presence of a phase transition and the accompanying large enhancement in the piezoelectric response is key in processing smaller and smaller piezoelectric micro- and nano-electromechanical systems. (materialstoday.com)
  • High-throughput analysis of piezoelectric coefficients in hundreds of materials. (nist.gov)
  • d-f) Analysis of the distribution of materials with high piezoelectric coefficients. (nist.gov)
  • 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)
  • Phase transitions in high-performance materials. (materialstoday.com)
  • New high-performance materials for power devices, sensors and other applications will only be possible when materials scientists have a better understanding of how they can exploit phase transitions. (materialstoday.com)
  • Knowing where these phase transitions happen and at which length scales can help us design next-generation materials. (materialstoday.com)
  • To influence the structure of these materials through chemical or other means, we really need to know where the transition breaks down, and at what length scale that occurs. (materialstoday.com)
  • Optical phase change materials (O-PCMs), a unique group of materials featuring exceptional optical property contrast upon a solid-state phase transition, have found widespread adoption in photonic applications such as switches, routers and reconfigurable meta-optics. (nature.com)
  • When optical phase change materials (O-PCMs) undergo solid-state phase transition, their optical properties are significantly altered. (nature.com)
  • To date, these devices only leverage phase change materials originally developed for electronic switching. (nature.com)
  • In addition to conventional metallic materials, several new classes of materials have become popular in recent decades, such as metallic glasses, high-entropy materials and quasicrystals. (uni-bremen.de)
  • In the first part of this article we explored Landau's theory of phase transitions in materials such as magnets. (maths.org)
  • High-throughput screening of candidate thermoelectric materials. (nist.gov)
  • We screened transition-metal oxides, nitrides, and sulfides in the International Crystal Structure Database to identify promising candidate thermoelectric materials. (nist.gov)
  • The combination of chirality and phase-transition materials has broad application prospects. (bvsalud.org)
  • In this paper, we examine several improvements to dynamic phase classification and prediction. (ucsd.edu)
  • We improve phase prediction accuracy by applying confidence to phase prediction, and we develop architectures that can accurately predict the outcome of the next phase change, and the length of the next phase. (ucsd.edu)
  • In the second installment of our four-part series on troubleshooting pointing issues, Quantum's Dave Flynn discusses the transition phase: the velocity it takes to go from needing to create heel to having crew fully hiking. (quantumsails.com)
  • The transition phase is the velocity it takes to go from needing to create heel to having the crew fully hiking, typically between 8-12 knots depending on the horsepower-to-weight ratio of the boat. (quantumsails.com)
  • It is known that at a certain "caustic" there is a "phase transition" in the solution of each of these equations. (mpg.de)
  • However, a new sharp peak at 235cm-1 indicates that micro-domains of a metastable phase are retained. (case.edu)
  • This paper provides the first rigorous analysis that explains why phase transitions are ubiquitous in random convex optimization problems. (videolectures.net)
  • Fleet renewal must be a high priority for the commercial vehicle sector and the government's Bus Back Better strategy must be implemented immediately to reverse the decline in bus operations. (smmt.co.uk)
  • Varsity Tutors offers resources like free High School Chemistry Diagnostic Tests to help with your self-paced study, or you may want to consider a Chemistry tutor . (varsitytutors.com)
  • A newer guideline recommends a longer intensive phase for some infections on the basis of results of an ongoing study in which longer courses were associated with lower relapse rates ( 8 ). (cdc.gov)
  • Pressure dependent micro-Raman spectroscopy further confirmed the phase transition. (arxiv.org)
  • The mode Gruneisen parameters and pressure coefficients for different Raman modes corresponding to each individual phase of SGO were calculated. (arxiv.org)
  • we observe further transition between 30 and 36 GPa into the high-pressure P 2 1 / c phase (HP- P 2 1 / c ). (geoscienceworld.org)
  • On decreasing pressure after the forward and reverse transitions, similar Raman features are seen, including the broad band in the TO(Gamma) region. (case.edu)
  • High pressure in food processing. (ku.dk)
  • This paper describes the first phase of research aimed at understanding explosion pressures that can develop in coal mines and the factors that lead to high explosion pressure and possible transition to detonation. (cdc.gov)
  • A massive transition has to be made in a large sector with high dependence on fossil fuels", says Professor Johansson. (lu.se)
  • Sweden was long bottom of the class, according to Professor Johansson, when it came to transition to vehicles with lower carbon emissions, but today progress is faster in Sweden than in most other countries. (lu.se)
  • We've had very good techniques for characterizing these phase changes at the large scale, and we've been able to use electron microscopy to figure out almost atomistically where the phase transition occurs, but until this technique was developed, we had nothing in between,' adds Bassiri-Gharb. (materialstoday.com)
  • Damage to organs during transplantation occurs in 2 phases: the warm ischemic phase and the cold ischemic phase. (medscape.com)
  • Analysis of local structure suggests that increase in the long-range AFE phase results from more extensive twinning of local FE regions, due to introduced charge disorder. (lu.se)
  • Graphene nanoplatelets have high mechanical strength and a very large and affordable specific surface area, as well as high electrical conductivity, which makes them a unique carbon nanomaterial. (mdpi.com)
  • The M stands for an early transition metal, the X is carbon or nitrogen, and the T is the surface termination, the kind of atoms sitting as the outermost layer of the sheet. (lu.se)
  • In a large number of technical processes involving droplets and particles, transition processes take place between solid, liquid and gaseous. (uni-bremen.de)
  • We discuss the free energies and phase diagrams of such theories and show that they are indeed universal in the large N limit. (arxiv.org)
  • Titrations often play a large role in the laboratory portion of High School Chemistry. (varsitytutors.com)
  • The flexible metal-organic compound known as MIL-53(Cr) has a narrow pore and a large pore phase, with a large volume difference. (nist.gov)
  • This paper investigates the evolution of gender equality in Sweden during a phase characterized by industrialization, urbanization, and demographic transition. (lu.se)
  • We find that after a period of stagnation, Sweden made significant progress in closing the gender gap from the 1940s onward to reach the high level of gender equality that it is now famous for. (lu.se)
  • It also describes tools for making reliable predictions about the quantitative aspects of the transition, including the location and the width of the transition region. (videolectures.net)
  • The lateral density profiles show that the incorporation of C 60 with relatively high ratios stabilizes the thickness of the bilayer. (rsc.org)
  • Typical examples of such disperse phase transition processes are atomization processes with the aim of particle generation through solidification of the droplets or the local welding of particles in additive manufacturing to form parts. (uni-bremen.de)