Results 141 to 150 of about 9,172,835 (351)

Formation of Q‐Carbon Nanoballs and Nanodiamonds by Pulsed Laser Annealing of Patterned Polymer Structures

open access: yesAdvanced Materials Interfaces, EarlyView.
2D and 3D patterned structures of Q‐carbon nanoballs and nanodiamonds have been created by laser writing of polymers, carbonization, and pulsed laser annealing. Polymeric structures are prepared by using a direct‐laser‐writing (DLW) process involving two‐photon polymerization (2PP). Patterned nanodiamond and Q‐carbon growth over large areas is obtained
Sumeer Khanna   +3 more
wiley   +1 more source

Controlled Air Gap Formation between W and TiO2 Films via Sub‐Surface TiO2 Atomic Layer Etching

open access: yesAdvanced Materials Technologies, EarlyView.
Delivering SiH4 and WF6 to a lined array of TiO2 films produces a thin film of tungsten while simultaneously, the underlying TiO2 is removed. When the W‐coated TiO2 structure is exposed to further etching cycles after deposition, TiO2 etching continues vertically and laterally, creating a self‐supported W structure and a vacant air gap.
Hannah R. M. Margavio   +6 more
wiley   +1 more source

A Thermally Expandable Resin for the Volumetric Additive Manufacturing of Shape‐Memory Functional Foams

open access: yesAdvanced Materials Technologies, EarlyView.
Volumetric additive manufacturing allows to print parts extremely fast, but is so far is limited by the build volume of the printers. The foaming materials presented here allow to expand printed parts up to 500% reaching densities of 0.16 g cm−3 as well as providing shape memory properties enabling the creation of lightweight, functional parts ...
Silvio Tisato   +3 more
wiley   +1 more source

Nonlinear convection in reaction-diffusion equations under dynamical boundary conditions

open access: yesElectronic Journal of Differential Equations, 2013
We study the blow-up phenomena for positive solutions of nonlinear reaction-diffusion equations including a nonlinear convection term $partial_t u = Delta u - g(u) cdot abla u + f(u)$ in a bounded domain of $mathbb{R}^N$ under the dissipative ...
Gaelle Pincet Mailly   +1 more
doaj  

NIR‐Harvesting Upconversion CsPbI3 Perovskite Solar Cells with Dye‐Hybridized Nanoparticles

open access: yesAdvanced Optical Materials, EarlyView.
To enhance solar energy conversion efficiency, dye‐sensitized upconversion nanoparticles (UCNPs) with CsPbBr3 shell layers are developed and integrated them into lead halide perovskite solar cells. These UCNPs convert near‐infrared (NIR) light into visible light, enabling the utilization of a broader solar spectrum, thereby increasing photocurrent ...
Ayumi Ishii   +4 more
wiley   +1 more source

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