Results 81 to 90 of about 132,293 (299)

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

Advanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas, Lucía Torrico‐García‐Viso, Jose Antonio Suárez del Pino, Nekane Aramburu‐Merino, Pilar Segovia, Enrique G. Michel, Josep Puigmartí‐Luis, Enrique Velasco, Pedro Tarazona, Daniel Maspoch, David Rodríguez‐San‐Miguel, Félix Zamora   +11 more
wiley   +1 more source

Effect of different surface treatments on retention and fracture strength of zirconia crowns over Ti-base zirconia abutments

Heliyon
Background: Limited evidence suggested different outcomes of surface treatment methods on zirconia abutments and crowns. Therefore, we investigated the effect of grooving, hot etching, and airborne particle abrasion (APA) methods on zirconia crowns over ...
Mehran Falahchai, Hamid Neshandar Asli, Mehdi Daneshvar, Amirreza Hendi   +3 more
doaj   +1 more source

Resistance to Fracture of Two All-Ceramic Crown Materials Following Endodontic Access [PDF]

, 2006
Statement of problem There is currently no protocol for managing endodontic access openings for all-ceramic crowns. A direct restorative material is generally used to repair the access opening, rendering a repaired crown as the definitive restoration ...
Berzins, David W., Luo, Qing, Nagy, William W., Thompson, Geoffrey A., Toth, Jeffrey M., Wood, Kelly Copps   +5 more
core   +1 more source

Sulfated Zirconia [PDF]

Synlett, 2005
(A) Catalytic activity of different solid acids such as Al 2O3, SiO2, ZrO2 and their sulfated forms has been investigated in a liquid phase esterification of isoamyl alcohol to prepare isoamyl propionate. The yield () of the ester was correlated with the total surface acidity and texture of the catalyst.
openaire   +2 more sources

Advanced Separators for Liquid and Quasi‐Solid Lithium Rechargeable Batteries: Design and Development

Advanced Materials, EarlyView.
This review traces the evolution of lithium‐ion battery separators from passive barriers to multifunctional components central to cell safety and performance. Polymer‐ceramic hybrids, nanofiber architectures, and bio‐derived membranes deliver ionic conductivities above 3 mS cm−1, thermal stability beyond 200 °C, and effective suppression of lithium ...
Karthik Vishweswariah, Ningaraju Gejjiganahalli Ningappa, Anil Kumar M. R., Jeremy I. G. Dawkins, Thiago M. G. Selva, Karim Zaghib   +5 more
wiley   +1 more source

Translucency of recent zirconia materials and material-related variables affecting their translucency: a systematic review and meta-analysis

BMC Oral Health
Background Recent forms of translucent zirconia material have been developed, offering a wide range of options and varieties for enhancing aesthetics, making it a preferred choice in the field of prosthetic dentistry.
Mahinour Yousry, Ihab Hammad, Mohamed El Halawani, Moustafa Aboushelib   +3 more
doaj   +1 more source

Doping Calcia and Yttria into Zirconia Obtained from by Product of Tin Concentrator to Improve its Ionic Conductivity

Journal of Mathematical and Fundamental Sciences, 2013
Zirconia has been prepared from Zircon concentrate by caustic fusion methods. Zircon is a by product from tin ore concentration plant at Bangka island of Indonesia.
Fitria Rahmawati, Bambang Prijamboedi, Syoni Soepriyanto, Ismunandar Ismu   +3 more
doaj   +1 more source

First-principles theoretical evaluation of crystalline zirconia and hafnia as gate oxides for Si microelectronics

, 2002
Parameters determining the performance of the crystalline oxides zirconia (ZrO_2) and hafnia (HfO_2) as gate insulators in nanometric Si electronics are estimated via ab initio calculations of the energetics, dielectric properties, and band alignment of ...
Fiorentini, V., Gulleri, G.
core   +1 more source

Effects of Impurity Content on the Sintering Characteristics of Plasma-Sprayed Zirconia [PDF]

, 2007
Yttria-stabilized zirconia powders, containing different levels of SiO2 and Al2O3, have been plasma sprayed onto metallic substrates. The coatings were detached from their substrates and a dilatometer was used to monitor the dimensional changes they ...
A. Cipitria, A. Kulkarni, A. Kulkarni, A.J. Allen, B. Siebert, B.Z. Janos, D. Stover, D. Stover, D.M. Zhu, D.M. Zhu, E.W. Washburn, H.C. Chen, H.C. Chen, H.E. Eaton, I.O. Golosnoy, I.O. Golosnoy, J. Brakel Van, J. Ilavsky, J. Ilavsky, J. Ilavsky, J.A. Thompson, K. Matsui, L. Singheiser, L. Xie, M. Gustavsson, M. Tamura, M.F. Ashby, M.N. Rahaman, M.R. Dorfman, P. Strunz, R. Hamacha, R. Vassen, R.A. Miller, S. A. Tsipas, S. Paul, S. Sodeoka, S. Stemmer, S.A. Tsipas, S.M. Lakiza, S.R. Choi, T.A. Dobbins, T.W. Clyne, V. Teixeira   +42 more
core   +1 more source

3D Printing of Highly Dense and Translucent Zirconia Parts for Dental Applications: Effect of Filament Overlapping

Advanced Materials Technologies, EarlyView.
This study formulated a 5Y‐PSZ zirconia paste for extrusion‐based additive manufacturing via direct ink writing, producing dense ceramic structures for dental applications. A colloidal approach with 47 vol% nanometric powder and tailored additives optimized rheology and printability.
Juliana de Freitas Gouveia Silva, Manuel Fellipe Rodrigues Pais Alves, Ana Carolina da Silva, Tiago Moreira Bastos Campos, Renata Marques De Melo, Susana Maria Henriques Olhero   +5 more
wiley   +1 more source