Results 81 to 90 of about 198,809 (319)

Ionic Transportation Induced Electric Field Modulation in Porous Ecoflex/PTFE with Confined Liquid for High‐Performance Contact Electrification Power Generation

open access: yesAdvanced Functional Materials, EarlyView.
Porous Ecoflex/PTFE composite with encapsulated liquid generates electricity through ionic migration induced by dynamic pore deformation, creating non‐uniform electric fields that drive charge induction on electrodes. This mechanism enhances charge transfer and ensures stable contact electrification performance, achieving 12 V and 4 nC with consistent ...
Xiangkun Bo   +5 more
wiley   +1 more source

The Temperature and Voltage Resistance Performance of Phenyl‐Modified Silicone Elastomers for High‐Voltage and High‐Power Semiconductor Device Encapsulation

open access: yesHigh Voltage
Silicon carbide (SiC) high‐voltage, high‐power semiconductor devices are essential for next‐generation power systems, yet conventional silicone elastomer encapsulation materials suffer from insulation degradation under extreme thermal and electrical ...
Dongxin He   +5 more
doaj   +1 more source

An In Vitro Study to Examine the Comparative Accuracy and Stability of Elastomeric Impression Materials under Different Levels of Hydration [PDF]

open access: yesDental Journal of Advance Studies
Introduction: For cast restorations, elastic impression materials are used for making negative replica of teeth and associated structures. A positive replica is then formed in the shape of a cast, which should be an exact form of the prepared tooth.
Manpreet Kaur   +5 more
doaj   +1 more source

Increased electromechanical sensitivity of polysiloxane elastomers by chemical modification with thioacetic groups

open access: yesMaterials & Design, 2020
Chemically cross-linked polydimethylsiloxane (PDMS) elastomers have gained importance as a dielectric in elastic capacitor actuators, which elongate when electrically charged. Common PDMS elastomers have a dielectric permittivity of only about 3 and thus
Elena Perju   +3 more
doaj   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

INTERCHAIN SILICONE INTERACTIONS: STRUCTURING SILICONE ELASTOMERS USING PHYSICAL, COVALENT, AND INTERFACIAL CHEMISTRY [PDF]

open access: yes, 2013
Silicone polymers, particularly PDMS (poly(dimethylsiloxane)) exhibit a wide range of exceptional properties including optical transparency, biostability, hydrophobicity and excellent oxygen transmissibility that make them extremely useful in a wide ...
Fawcett, Amanda S.
core  

Nanoengineered Binetworks in Multifunctional Anionic Block Polymer Mesoblends for Improved Mechanical Properties

open access: yesAdvanced Functional Materials, EarlyView.
Mesoblends consist of a nanostructured polymer into which a second polymer is imbibed with a selective solvent. In this work, a solvent‐templatable pentablock terpolymer possessing a sulfonated midblock is modified with a hydrophilic polymer that is photocrosslinked in situ, yielding a hierarchical binetwork.
Kacie M. Wells   +3 more
wiley   +1 more source

Composite magnetorheological elastomers as dielectrics for plane capacitors: Effects of magnetic field intensity

open access: yesResults in Physics, 2016
The fabrication of composite magnetorheological elastomers (MRECs) based on silicone rubber, carbonyl iron microparticles (10% vol.) and polyurethane elastomer doped with 0%, 10% and 20% volume concentration TiO2 microparticles is presented. The obtained
Maria Balasoiu, Ioan Bica
doaj   +1 more source

The Water Uptake of Experimental Soft Lining Materials

open access: yes, 1997
PhDIn order to develop a successful soft lining material various factors have to be considered; physical strength, adhesion to the denture base ( or prosthetic) and the durability of the material's properties when in the mouth.
Riggs, Paul David, Riggs, P.D.
core  

Silicone elastomers with superior softness and dielectric properties [PDF]

open access: yes, 2016
Dielectric elastomers (DEs) change their shape and size under a high voltage or reversibly generate a high voltage when deformed. The obstacle of high driving voltages, however, limits the commercial viability of the technology at present.
Skov, Anne Ladegaard   +3 more
core  

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