Results 1 to 10 of about 77,031 (254)

Progress of Research in Negative Thermal Expansion Materials: Paradigm Shift in the Control of Thermal Expansion [PDF]

open access: yesFrontiers in Chemistry, 2018
To meet strong demands for the control of thermal expansion necessary because of the advanced development of industrial technology, widely various giant negative thermal expansion (NTE) materials have been developed during the last decade.
Koshi Takenaka
doaj   +7 more sources

Negative thermal expansion materials: technological key for control of thermal expansion

open access: yesScience and Technology of Advanced Materials, 2012
Most materials expand upon heating. However, although rare, some materials contract upon heating. Such negative thermal expansion (NTE) materials have enormous industrial merit because they can control the thermal expansion of materials.
Koshi Takenaka
doaj   +5 more sources

Efficient Calculation of the Negative Thermal Expansion in ZrW2O8 [PDF]

open access: yesFrontiers in Chemistry, 2018
We present a study of the origin of the negative thermal expansion (NTE) on ZrW2O8 by combining an efficient approach for computing the dynamical matrix with the Lanczos algorithm for generating the phonon density of states in the quasi-harmonic ...
Fernando D. Vila   +2 more
doaj   +5 more sources

Isotropic Negative Thermal Expansion Metamaterials [PDF]

open access: yesACS Applied Materials & Interfaces, 2016
Negative thermal expansion materials are important and desirable in science and engineering applications. However, natural materials with isotropic negative thermal expansion are rare and usually unsatisfied in performance. Here, we propose a novel method to achieve negative thermal expansion via a metamaterial approach. The metamaterial is constructed
Ji Zhou
exaly   +4 more sources

Elastic mechanics solution of thermal expansion of bi-material curved beam and its application to negative thermal expansion metamaterials [PDF]

open access: yesScientific Reports, 2022
Thermal stress impacts various engineering fields significantly, such as aerospace and precision instruments. This adverse effect can be greatly reduced, if not eliminated, by the application of micro-thermal expansion materials, and bi-material beams ...
Jingxiang Huang   +2 more
doaj   +2 more sources

Colossal negative thermal expansion in reduced layered ruthenate [PDF]

open access: yesNature Communications, 2017
Materials displaying negative thermal expansion have received interest as thermal-expansion compensators. Here, authors report very large total volume change associated with this effect in reduced calcium ruthenates and propose a microstructural origin ...
Koshi Takenaka   +4 more
doaj   +2 more sources

Negative Thermal Expansion in the Materials With Giant Magnetocaloric Effect [PDF]

open access: yesFrontiers in Chemistry, 2018
Negative thermal expansion (NTE) behaviors in the materials with giant magnetocaloric effects (MCE) have been reviewed. Attentions are mainly focused on the hexagonal Ni2In-type MM'X compounds.
Fengxia Hu   +12 more
doaj   +2 more sources

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

open access: yesFrontiers in Chemistry, 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.
Connor A. Occhialini   +7 more
doaj   +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: yesAdvanced Science
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.
Minjun Ai   +13 more
doaj   +2 more sources

Negative thermal expansion property in Nb14W3O44

open access: yesJournal of Materials Research and Technology, 2022
Nb14W3O44, a promising electrode material of lithium-ion batteries/capacitors, was prepared using a solid-state method. Its geometrical structure, phase diagram, and thermal expansion properties were all thoroughly investigated.
Niu Zhang   +9 more
doaj   +1 more source

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