نتایج جستجو برای: bn nanosheet

تعداد نتایج: 9553  

Journal: :Solid State Communications 2023

We investigate the electronic, thermal, and optical properties of BN-codoped MgO monolayers taking into account interaction effects between B N dopant atoms. The relatively wide indirect band gap a pure nanosheet can be changed to narrow direct by tuning B-N attractive interaction. reduction does not only enhance properties, including absorption spectra conductivity, but also most intense peak ...

Journal: :Acta biomaterialia 2012
Akihiro Saito Hiromi Miyazaki Toshinori Fujie Shinya Ohtsubo Manabu Kinoshita Daizoh Saitoh Shinji Takeoka

Polymeric ultra-thin films (nanosheets) possess unique properties that make them suitable materials for various biomedical applications. In our previous study, we assessed the use of an antibiotic (tetracycline, TC)-loaded nanosheet (or "TC-nanosheet") for the treatment of gastrointestinal tissue defects. The nanosheet consisted of three functional layers: layer-by-layer nanosheet as a stable p...

Journal: :Nanoscale 2014
Rahim Jan Peter May Alan P Bell Amir Habib Umar Khan Jonathan N Coleman

We have used liquid exfoliation of hexagonal Boron-Nitride (BN) to prepare composites of BN nanosheets of three different sizes in polyvinylchloride matrices. These composites show low levels of reinforcement, consistent with poor alignment of the nanosheets as-described by a modified version of Halpin-Tsai theory. However, drawing of the composites to 300% strain results in a considerable incr...

Journal: :Applied Surface Science 2021

Nanocomposites filled with impermeable two-dimensional materials are of specific interest for protecting metal from corrosion. The addition hexagonal boron nitride nanosheet (BNNS) into a coating matrix can improve the barrier effect virtually due to its high chemical and thermal stability dielectric property. This atom-level thick filler involves «tortured pathway» that prolongs penetration di...

2012
Umar Khan Peter May Arlene O'Neill Alan P. Bell Elodie Boussac Arnaud Martin James Semple Jonathan N. Coleman

We have exfoliated hexagonal boron nitride by ultrasonication in solutions of polyvinylalcohol in water. The resultant nanosheets are sterically stabilised by adsorbed polymer chains. Centrifugation-based sizeselection was used to give dispersions of nanosheets with aspect ratio (length/thickness) of 1400. Such dispersions can be used to produce polyvinylalcohol–BN composite films. Helium ion m...

Journal: :Scientific reports 2016
Tae Woo Kim In Young Kim Dae-Hwan Park Jin-Ho Choy Seong-Ju Hwang

A universal technology for the encapsulative protection of unstable anionic species by highly stable layered metal oxide has been developed via the surface modification of a metal oxide nanosheet. The surface anchoring of (3-aminopropyl)triethoxysilane (APTES) on exfoliated titanate nanosheet yields a novel cationic metal oxide nanosheet, which can be universally used for the hybridization with...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Bin Dai Dan Li Wenhui Xi Fang Luo Xiang Zhang Man Zou Mi Cao Jun Hu Wenyuan Wang Guanghong Wei Yi Zhang Cong Liu

Using and engineering amyloid as nanomaterials are blossoming trends in bionanotechnology. Here, we show our discovery of an amyloid structure, termed "amyloid-like nanosheet," formed by a key amyloid-forming segment of Alzheimer's Aβ. Combining multiple biophysical and computational approaches, we proposed a structural model for the nanosheet that is formed by stacking the amyloid fibril spine...

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