Results 41 to 50 of about 19,340 (262)

Photoluminescence of hexagonal boron nitride: effect of surface oxidation under UV-laser irradiation

open access: yes, 2008
We report on the UV laser induced fluorescence of hexagonal boron nitride (h-BN) following nanosecond laser irradiation of the surface under vacuum and in different environments of nitrogen gas and ambient air.
Andrei V. Kanaev   +45 more
core   +1 more source

The theoretical study on interaction of hydrogen with single-walled boron nitride nanotubes. I. The reactive force field ReaxFFHBN development [PDF]

open access: yes, 2005
We present a new reactive force field ReaxFFHBN derived to accurately model large molecular and condensed phase systems of H, B, and N atoms. ReaxFFHBN has been tested against quantum calculation data for B–H, B–B, and B–N bond dissociations and for H–B ...
Goddard, William A., III   +4 more
core   +1 more source

Graphitic-BN Based Metal-free Molecular Magnets From A First Principle Study

open access: yes, 2005
We perform a first principle calculation on the electronic properties of carbon doped graphitic boron nitride graphitic BN. It was found that carbon substitution for either boron or nitrogen atom in graphitic BN can induce spontaneous magnetization ...
Chopra N G   +7 more
core   +1 more source

Evaluating the Effectiveness of Shielding Material, Vehicle Shape and Astronaut Position for Deep Space Travel [PDF]

open access: yes, 2020
Background: As future crewed, deep space missions are being planned, it is important to assess how spacecraft design can be used to minimize radiation exposure.
Bilbao y Leon, Sama   +3 more
core   +1 more source

Theoretical Study of Physisorption of Nucleobases on Boron Nitride Nanotubes: A New Class of Hybrid Nano-Bio Materials [PDF]

open access: yes, 2010
We investigate the adsorption of the nucleic acid bases, adenine (A), guanine (G), cytosine (C), thymine (T) and uracil (U) on the outer wall of a high curvature semiconducting single-walled boron nitride nanotube (BNNT) by first principles density ...
Akdim B   +8 more
core   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum   +5 more
wiley   +1 more source

Electronic properties of sculpturenes

open access: yesNew Journal of Physics, 2014
We investigate the electronic properties of sculpturenes , formed by sculpting selected shapes from bilayer graphene, boron nitride or graphene–boron nitride hetero-bilayers and allowing the shapes to spontaneously reconstruct.
Laith Algharagholy   +3 more
doaj   +1 more source

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai   +6 more
wiley   +1 more source

Dimension Engineering of Single-Layer PtN$_2$ with the Cairo Tessellation

open access: yes, 2019
Single-layer PtN$_2$ exhibits an intriguing structure consisting of a tessellation pattern called the Cairo tessellation of type 2 pentagons, which belong to one of the existing 15 types of convex pentagons discovered so far that can monohedrally tile a ...
Huang, Wenjiang   +5 more
core   +1 more source

Precise Atomic Structures of Three Novel Nanomaterials in Nanotechnology, Biomedicine and Cosmology: Graphene, Boron Nitride and Coronene [PDF]

open access: yes, 2010
Nanomaterials are currently of great importance in science, technology and commercial applications. Since these materials are atomic layer thick and are a few square nanometers of area, a knowledge of their precise atomic structures will help in the ...
Lakshmi Atchison   +2 more
core   +2 more sources

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