phase transition


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phase transition

n.
A change in a feature of a physical system, often involving the absorption or emission of energy from the system, resulting in a transition of that system to another state. The melting of ice is a phase transition of water from a solid phase to a liquid phase, requiring energy in the form of heat.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phase transition - a change from one state (solid or liquid or gas) to another without a change in chemical composition
freeze, freezing - the withdrawal of heat to change something from a liquid to a solid
liquefaction - the conversion of a solid or a gas into a liquid
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
melt, melting, thaw, thawing - the process whereby heat changes something from a solid to a liquid; "the power failure caused a refrigerator melt that was a disaster"; "the thawing of a frozen turkey takes several hours"
evaporation, vaporisation, vaporization, vapour, vapor - the process of becoming a vapor
References in periodicals archive ?
Previously, researchers confused excitonium with Peierls phase transition.
On the other hand, newer sources (not only the referenced one) claim that only a single phase transition exists: from the cubic to the tetragonal phase at -168 [degrees]C (not -163 [degrees]C) [13].
He also notes that the same basic pathology of phase transition may also underlie other neurodegenerative diseases, including Alzheimer's disease, and he is aiding researchers in applying the same research approach as in ALS/FTD to Alzheimer's.
To overcome this issue, Yin and his team of researchers, Penn State graduate students Wenbin Zhu, Ju-Hung Chao, Chang-Jiang Chen and Robert Hoffman from the Army Research Laboratory in Maryland, eliminated the electric field-induced phase transition in a nanodisordered KTN crystal by making it work at a higher temperature.
However, the calcination process at 450 C, above phase transition temperature (430 C) of the catalyst led to the change in the crystal structure and reduced the degradation efficiency.
Understanding where and how phase transitions occur is critical to developing new generations of the materials used in high-performance batteries, sensors, energy-harvesting devices, medical diagnostic equipment and other applications.
Approach to the Relation Driven Vibrational to Axially Rotational Shape Phase Transition along the yrast line of a Nucleus.
Phase transition is the existence stage of an ethnic system with an age range in which it exists in an unstable state, arising from the fact that the submovers and subshakers and/or movers and shakers share go beyond the range of values optimal for the completed (current) phase; It is an unstable state which is characterized by ethnic field split and persists as long as the share of movers and submovers is not beyond the optimal range of values for the next (current) phase.
The presence of the paraelectric-to-ferroelectric phase transition of the composite films has been confirmed by capacitance vs.
2] goes through its phase transition, its lattice structure encounters a change along the 3 axes, 2 of which expand while the third shrinks.
Researchers also found that they were able to induce a phase transition using an electric current instead of heat.
Using a technique developed specifically for their experiment known as spectroscopic imaging scanning tunneling microscopy (SI-STM), the team was able to track the arrangement and interactions of electrons in the crystals, and watch how they react at different temperatures and see what happens when they passed through the mysterious phase transition.