Observation of a Negative Thermal Hysteresis in Relaxor Ferroelectric Polymers
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Functional Materials"
DOI: 10.1002/adfm.202000648
Abstract: Hysteresis phenomena, including both electrical and thermal types, are essential to ferroelectric materials. The former, known as polarization‐electric field hysteresis, has been intensively studied in a wide range of ferroelectric materials. However, relevant experimental evidence… read more here.
Keywords: relaxor ferroelectric; thermal hysteresis; ferroelectric polymers; hysteresis ... See more keywords
Active Thermal Metasurfaces for Remote Heating/Cooling by Mimicking Negative Thermal Conductivity.
Sign Up to like & getrecommendations! Published in 2022 at "Advanced materials"
DOI: 10.1002/adma.202210981
Abstract: Remote temperature control can be obtained by a long-focus thermal lens that can focus heat fluxes into a spot far from the back surface of the lens and create a virtual thermal source/sink in the… read more here.
Keywords: active thermal; thermal lens; thermal metasurfaces; conductivity ... See more keywords
Negative thermal expansion in porous glass-ceramics based on Mg2Al2B2Si5O18 prepared from Saudi raw materials
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-020-1017-3
Abstract: A porous glass-ceramic enjoyed very low and negative thermal expansion was prepared. A glass of the base molar composition, 2 MgO·2 Al2O3·2 B2O3·5 SiO2 with the addition of 1.61 ma% TiO2, was melted from kaolin,… read more here.
Keywords: negative thermal; glass; glass ceramics; porous glass ... See more keywords
Avoiding the intermediate phase Zr2WP2O12 to develop a larger-negative-thermal-expansion-coefficient material Zr2W2P2O15
Sign Up to like & getrecommendations! Published in 2017 at "Ceramics International"
DOI: 10.1016/j.ceramint.2017.02.102
Abstract: Abstract Zr 2 W 2 P 2 O 15 with larger-negative-thermal-expansion-coefficient (NTEC, −4.01×10 −6 K −1 , 143–673 K) is developed by controlling reaction process to avoid the intermediate phase of Zr 2 WP 2 O… read more here.
Keywords: negative thermal; phase; larger negative; expansion coefficient ... See more keywords
Application of a negative thermal expansion oxide in SOFC cathode
Sign Up to like & getrecommendations! Published in 2021 at "Ceramics International"
DOI: 10.1016/j.ceramint.2020.08.225
Abstract: Abstract To improve the performance of solid oxide fuel cells (SOFCs) at intermediate temperature, an idea of adding a negative thermal expansion (NTE) oxide into cathode is proposed. The effects of NdMnO3-δ (NM) NTE oxide… read more here.
Keywords: negative thermal; sofcs; cathode; bsf cathode ... See more keywords
Hoberman-sphere-inspired lattice metamaterials with tunable negative thermal expansion
Sign Up to like & getrecommendations! Published in 2018 at "Composite Structures"
DOI: 10.1016/j.compstruct.2018.01.108
Abstract: © 2018 Elsevier Ltd Materials with engineered thermal expansion coefficients, capable of avoiding failure or irreversible destruction of structures and devices, are important for aerospace, civil, biomedical, optics, and semiconductor applications. In natural materials, thermal… read more here.
Keywords: negative thermal; expansion; expansion coefficient; thermal expansion ... See more keywords
Lattice dynamics and thermomechanical properties of zirconium(IV) chloride: Evidence for low-temperature negative thermal expansion
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2017.10.065
Abstract: Abstract The crystal structure, lattice dynamics and themomechanical properties of bulk monoclinic zirconium tetrachloride ( ZrCl 4 ) have been investigated using zero-damping dispersion-corrected density functional theory [DFT-D3(zero)]. Phonon analysis reveals that ZrCl 4 (cr)… read more here.
Keywords: negative thermal; temperature; expansion; lattice dynamics ... See more keywords
Using negative thermal expansion effect to grow spiny NiS/C architecture and its application in sodium-ion batteries
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2020.154572
Abstract: Abstract Negative thermal expansion of nickel sulfide (NiS) is an underlying cause for the self-explosion of toughened glass in practical use. In this work, this undesired thermal property is rationally used to produce spiny NiS/C… read more here.
Keywords: sodium ion; negative thermal; spiny nis; ion batteries ... See more keywords
An optical thermometry based on abnormal negative thermal quenching of the charge transfer band edge
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2019.116636
Abstract: Abstract In this work the temperature-dependent photoluminescence excitation and photoluminescence spectroscopies of Eu3+-doped LuVO4 phosphors have been performed in the 298–448 K range. It is found that the charge transfer band (CTB) of [VO4]3- unites undergoes… read more here.
Keywords: negative thermal; thermometry; thermal quenching; abnormal negative ... See more keywords
Enhancing the structure stability of Ni-rich LiNi0.6Co0.2Mn0.2O2 cathode via encapsulating in negative thermal expansion nanocrystalline shell
Sign Up to like & getrecommendations! Published in 2021 at "Nano Energy"
DOI: 10.1016/j.nanoen.2021.105775
Abstract: ABSTRACT Ni-rich cathode materials have attracted considerable attention due to the high electrochemical capacities and prominent price advantage, while their extensive applications are still impeded by the poor structure stability induced by the intrinsic Li+/Ni2+… read more here.
Keywords: structure; thermal expansion; negative thermal; structure stability ... See more keywords
Abnormal negative thermal quenching of photoluminescence in CdMnTe:In crystals
Sign Up to like & getrecommendations! Published in 2021 at "Optical Materials"
DOI: 10.1016/j.optmat.2021.111379
Abstract: Abstract Temperature-dependent photoluminescence (PL) properties of indium-doped CdMnTe (CMT:In) crystals were investigated. Four emission peaks of the tip crystal and three emission peaks of the tail crystal from as-grown CMT:In ingot were observed at low-temperature… read more here.
Keywords: negative thermal; cdmnte; thermal quenching; emission peaks ... See more keywords