Results 121 to 130 of about 155,903 (385)

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

open access: yesAdvanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe   +7 more
wiley   +1 more source

Differences of methacrylate and silorane based composite resins surface hardness after 40% hydrogen peroxide application

open access: yesPadjadjaran Journal of Dentistry, 2013
Composite restoration is frequently found on teeth before doing any bleaching treatment. Hydrogen peroxide is a bleaching agent which enable transition to one of the composite physical properties. The aim of this research was to observe the difference of
Amalina Putri   +2 more
doaj   +1 more source

Advanced thermoplastic resins, phase 2 [PDF]

open access: yes
High temperature structural resins are required for use on advanced aerospace vehicles as adhesives and composite matrices. NASA-Langley developed polyimide resins were evaluated as high temperature structural adhesives for metal to metal bonding and as ...
Brown, A. M., Falcone, A., Hill, S. G.
core   +1 more source

Use of natural resins in repairing damaged timber beams – An experimental investigation [PDF]

open access: yes, 2019
Different techniques including the application of steel elements, composite materials and polymeric resins have been used in the past to repair damaged timber beams.
Benedetti, G   +3 more
core   +3 more sources

Development of a Novel, All‐Aromatic High Tensile Modulus Liquid Crystalline Polyimide for Fused Filament Fabrication Applications

open access: yesAdvanced Functional Materials, EarlyView.
A novel, high tensile modulus, fully aromatic thermotropic liquid crystalline polyimide (LCPI) with better solvent resistance and thermal stability is synthesized. Tensile specimens are fabricated using both injection molding and FFF processes, accomplished via lower viscosity enabled by the LC phase.
Zhenning Yu   +6 more
wiley   +1 more source

Composites of FeCl3 and TiO2 with Bismaleimide resins [PDF]

open access: yesarXiv, 2016
Ferric Chloride-Bismaleimide (FeCl3-BMI) and Titania-Bismaleimide (TiO2-BMI) composite were synthesized using PVA as a binder. The composite systems were deposited on glass slide as a homogenous coating. XRD and FTIR studies of the composite system showed its crystalline and structural configuration. A mixed phase of TiO2 and BMI as well as short range
arxiv  

Bio-Inspired Aggregation Control of Carbon Nanotubes for Ultra-Strong Composites

open access: yes, 2015
High performance nanocomposites require well dispersion and high alignment of the nanometer-sized components, at a high mass or volume fraction as well.
Gao, P   +10 more
core   +1 more source

A Gym for Cells—Direct Laser Writing of Magnetic Multilayered Micro Actuators for Mechanical Stimulation of Cells

open access: yesAdvanced Functional Materials, EarlyView.
Surface‐attached multilayer micromagnet systems are fabricated by two‐photon crosslinking. The pillar‐shaped micro actuators consist of a soft and flexible surface‐attached cell‐repellent hydrogel layer at the bottom, acting as a hinge and a cell‐adhesive hydrophobic polymer filled with magnetic nanoparticles.
Nicolas Geid   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy