Silica-shell encapsulation and adhesion of VO₂nanowires to glass substrates: integrating solution-derived VO₂nanowires within thermally responsive coatings

First-Principles Analysis of Li Intercalation in VO2(B)

“…Although beyond the scope of this paper, this finding encourages further investigation into the surface degradation and ion dissolution of VO 2 (B), which can be correlated to its inferior long-term cycling stability. Apparently, a great amount of fundamental work remains to be done on the design of protective coatings 73 for VO 2 (B) nanostructures.…”

Postsynthetic Route for Modifying the Metal—Insulator Transition of VO2 by Interstitial Dopant Incorporation

“…In contrast, the R structure is a higher symmetry phase with a linear periodic arrangement of vanadium atoms along the cation sublattice characterized by uniform V−V lengths of 2.85 Å (along the c axis). 1,11,13,14 The abrupt and massive switching of conductance and optical transmittance in close proximity of room temper- ature in response to external stimuli such as temperature (and also strain, photoexcitation, and voltage) makes this compound of great interest for functional applications in logic and memory circuitry, electromagnetic cloaking, ballistic modulation, and thermochromic glazing to provide just a few representative examples. 2,4,15−17 A major challenge in studies of correlated systems, which also has widespread practical resonance for applications of these materials in devices requiring room-temperature operation, is to devise methods to modulate the transition temperature of the electronic instability.…”

“…67 °C. − Considerable debate still exists as to whether the transition is underpinned by electronphonon coupling (with an accompanying Peierls’ distortion) or a modification of electronelectron correlation (as is characteristic of Mott insulators). ,,, Below the transition temperature, the insulating phase of VO 2 has an optical bandgap estimated to be 600 meV, which is eliminated upon temperature-, voltage-, photoexcitation-, or strain-induced metallization. , Whether or not a specific crystal structure gives rise to a specific (insulating or metallic) electronic structure or is a consequence of such an electronic structure, below the transition temperature, the monoclinic (M 1 ) phase ( P 2 1 / c ) of VO 2 is preferentially stabilized, whereas above the transition temperature, the tetragonal/rutile (R) phase ( P 4 2 / mnm ) represents the thermodynamic minimum. ,− The M 1 phase of VO 2 has alternating V–V distances of 2.65 and 3.12 Å along the crystallographic a axis and presents a canted, zigzag configuration along the cation sublattice. In contrast, the R structure is a higher symmetry phase with a linear periodic arrangement of vanadium atoms along the cation sublattice characterized by uniform V–V lengths of 2.85 Å (along the c axis). ,,, The abrupt and massive switching of conductance and optical transmittance in close proximity of room temperature in response to external stimuli such as temperature (and also strain, photoexcitation, and voltage) makes this compound of great interest for functional applications in logic and memory circuitry, electromagnetic cloaking, ballistic modulation, and thermochromic glazing to provide just a few representative examples. ,,− …”

Building on Sub-Arctic Soil: Geopolymerization of Muskeg to a Densified Load-Bearing Composite

“…A silicate matrix was constituted by infiltrating liquid-phase molecular or salt precursors within the muskeg followed by catalytic condensation 26 , 40 , 41 . Two different types of silica precursors, TEOS and Na 2 SiO 3 , were examined for the densification of muskeg soil.…”