Results 21 to 30 of about 72,046 (253)

Understanding the role of guest ions in the control of thermal expansion of FeFe(CN)6

open access: yesResults in Physics, 2022
Understanding the role of guest species in framework materials is important to successfully achieve the control of thermal expansion. In this work, the thermal expansion of the Prussian blue analogue FeFe(CN)6 has been effectively tailored from negative,
Qilong Gao   +8 more
doaj   +1 more source

Design optimization of multifunctional metamaterials with tunable thermal expansion and phononic bandgap

open access: yesMaterials & Design, 2021
Metamaterials have been extensively investigated owing to their unusual properties. However, the design of multifunctional metamaterials requires further investigation.
Xing Zhang   +4 more
doaj   +1 more source

Negative Thermal Expansion Caused by the Antiferroelectric Phase Transition in Lead-Free Perovskite Ceramics

open access: yesCrystals, 2023
Due to the structural stability and high adjustability of perovskite, lead-free perovskite ceramics are widely thought to be one of the most promising functional materials.
Huifen Yu, Liang Chen, Chang Zhou, He Qi
doaj   +1 more source

Ultra-low thermal expansion realized in giant negative thermal expansion materials through self-compensation

open access: yesAPL Materials, 2017
Materials with zero thermal expansion (ZTE) or precisely tailored thermal expansion are in urgent demand of modern industries. However, the overwhelming majority of materials show positive thermal expansion.
Fei-Ran Shen   +15 more
doaj   +1 more source

On the switching between negative and positive thermal expansion in framework materials

open access: yesMaterials Research Letters, 2019
The control of thermal expansion represents a challenge in materials design. This work shows that the length of the lattice parameter is a key element for controlling thermal expansion. By varying the lattice parameter through external pressure, chemical
Andrea Sanson
doaj   +1 more source

Negative Thermal Expansion Near the Precipice of Structural Stability in Open Perovskites. [PDF]

open access: yesFront Chem, 2018
Negative thermal expansion (NTE) describes the anomalous propensity of materials to shrink when heated. Since its discovery, the NTE effect has been found in a wide variety of materials with an array of magnetic, electronic and structural properties.
Occhialini CA   +3 more
europepmc   +2 more sources

Significantly Promoting the Thermal Conductivity and Machinability of Negative Thermal Expansion Alloy via In Situ Precipitation of Copper Networks. [PDF]

open access: yesAdv Sci (Weinh)
Rapid advancements in electronic devices yield an urgent demand for high‐performance electronic packaging materials with high thermal conductivity, low thermal expansion, and great mechanical properties.
Ai M   +13 more
europepmc   +2 more sources

Which phonons contribute most to negative thermal expansion in ScF3?

open access: yesAPL Materials, 2023
Using calculations of the phonon distribution in ScF3 across the whole of reciprocal space, we show that the important phonons for the negative thermal expansion in this material are those associated with the rigid unit modes (RUMs) and associated quasi ...
Martin T. Dove   +4 more
doaj   +1 more source

Optimized negative thermal expansion property in low-cost Mg2P2O7-based bulk material

open access: yesResults in Physics, 2022
Negative thermal expansion (NTE) is an intriguing physical phenomenon, which is of great significance for the high precision application. In this work, we have realized to broaden the NTE temperature zone in Mg2P2O7-based bulk material by doping Cu atom ...
Yige Du   +8 more
doaj   +1 more source

Negative thermal expansion of water in hydrophobic nanospaces [PDF]

open access: yesPhys. Chem. Chem. Phys., 2012
The density and intermolecular structure of water in carbon micropores (w = 1.36 nm) are investigated by small-angle X-ray scattering (SAXS) and X-ray diffraction (XRD) measurements between 20 K and 298 K. The SAXS results suggest that the density of the water in the micropores increased with increasing temperature over a wide temperature range (20-277
Ryusuke, Futamura   +3 more
openaire   +2 more sources

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