Universal Scaling of Excitons in Quasi One-Dimensional Carbon and Boron Nitride Allotropes

2019 ◽  
Vol 123 (41) ◽  
pp. 25373-25378
Author(s):  
Xi Zhu
Keyword(s):  
Boron Nitride ◽  
One Dimensional ◽  
Universal Scaling

Porous boron nitride nanofibers as effective nanofillers for poly(vinyl alcohol) composite hydrogels with excellent self-healing performances

Soft Matter ◽  
2022 ◽  
Author(s):  
Xiangqian Gao ◽  
Tiantian Deng ◽  
Xindi Huang ◽  
Mengmeng Yu ◽  
Danyang Li ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
One Pot ◽  
One Dimensional ◽  
Composite Hydrogels ◽  
Assembly Method

A new composite hydrogels with excellent self-healing properties was prepared by combining poly(vinyl alcohol) (PVA) and boron nitride nanofibers (BNNFs) via a facile one-pot assembly method. One-dimensional porous BNNFs with...

Controlled synthesis of quasi-one-dimensional boron nitride nanostructures

2007 ◽  
Vol 22 (10) ◽  
pp. 2809-2816 ◽  
Author(s):  
Dai-Ming Tang ◽  
Chang Liu ◽  
Hui-Ming Cheng
Keyword(s):  
Boron Nitride ◽  
Catalyst Concentration ◽  
Structural Characteristics ◽  
Chemical Vapor ◽  
Growth Conditions ◽  
Chemical Vapor Deposition Method ◽  
One Dimensional ◽  
Experimental Parameters ◽  
Bn Nanostructures ◽  
Catalyst Chemical Vapor Deposition

A floating catalyst chemical vapor deposition method was developed for the synthesis of quasi-one-dimensional (1D) boron nitride (BN) nanostructures. By carefully tuning the experimental parameters such as growth temperature, floating catalyst concentration, and boron precursor, high quality 1D BN nanostructures including nanotubes, nanobamboos, and nanowires were selectively produced. The microstructures of the obtained 1D BN nanomaterials were characterized, and it was found that the nanostructures are composed of hexagonal BN phase with (002) planes stacking in different manners. A growth mechanism of the BN nanostructures was proposed based on the analysis of their structural characteristics and growth conditions.

scholarly journals Spatially resolved one-dimensional boundary states in graphene–hexagonal boron nitride planar heterostructures

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Jewook Park ◽  
Jaekwang Lee ◽  
Lei Liu ◽  
Kendal W. Clark ◽  
Corentin Durand ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
One Dimensional ◽  
Spatially Resolved ◽  
Boundary States ◽  
Dimensional Boundary

scholarly journals Blue emission at atomically sharp 1D heterojunctions between graphene and h-BN

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Gwangwoo Kim ◽  
Kyung Yeol Ma ◽  
Minsu Park ◽  
Minsu Kim ◽  
Jonghyuk Jeon ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Physical Properties ◽  
Hexagonal Boron Nitride ◽  
Graphene Quantum Dots ◽  
Blue Emission ◽  
Electronic States ◽  
Optoelectronic Property ◽  
Two Dimensional ◽  
One Dimensional

Abstract Atomically sharp heterojunctions in lateral two-dimensional heterostructures can provide the narrowest one-dimensional functionalities driven by unusual interfacial electronic states. For instance, the highly controlled growth of patchworks of graphene and hexagonal boron nitride (h-BN) would be a potential platform to explore unknown electronic, thermal, spin or optoelectronic property. However, to date, the possible emergence of physical properties and functionalities monitored by the interfaces between metallic graphene and insulating h-BN remains largely unexplored. Here, we demonstrate a blue emitting atomic-resolved heterojunction between graphene and h-BN. Such emission is tentatively attributed to localized energy states formed at the disordered boundaries of h-BN and graphene. The weak blue emission at the heterojunctions in simple in-plane heterostructures of h-BN and graphene can be enhanced by increasing the density of the interface in graphene quantum dots array embedded in the h-BN monolayer. This work suggests that the narrowest, atomically resolved heterojunctions of in-plane two-dimensional heterostructures provides a future playground for optoelectronics.

The geometry of hexagonal boron nitride clusters in the initial stages of chemical vapor deposition growth on a Cu(111) surface

Nanoscale ◽  
2019 ◽  
Vol 11 (28) ◽  
pp. 13366-13376 ◽  
Author(s):  
Zhong-Qiang Liu ◽  
Jichen Dong ◽  
Feng Ding
Keyword(s):  
Chemical Vapor Deposition ◽  
Boron Nitride ◽  
Vapor Deposition ◽  
Critical Size ◽  
Hexagonal Boron Nitride ◽  
Chemical Vapor ◽  
Two Dimensional ◽  
Chemical Vapor Deposition Growth ◽  
One Dimensional

In the initial stages of chemical vapor deposition on a Cu(111) surface, one-dimensional Bn–1Nn (N-rich environment) or BnNn–1 (B-rich) chains first appear, and they transform to two-dimensional sp2 networks or h-BN islands at a critical size of 13.

scholarly journals Emergent parabolic scaling of nano-faceting crystal growth

2015 ◽  
Vol 471 (2174) ◽  
pp. 20140560 ◽  
Author(s):  
Stephen J. Watson
Keyword(s):  
Free Energy ◽  
Crystal Growth ◽  
Characteristic Length ◽  
Scaling Law ◽  
Model System ◽  
Direct Proportion ◽  
One Dimensional ◽  
Universal Scaling ◽  
Parabolic Scaling ◽  
Matched Asymptotic Analysis

Nano-faceted crystals answer the call for self-assembled, physico-chemically tailored materials, with those arising from a kinetically mediated response to free-energy disequilibria ( thermokinetics ) holding the greatest promise. The dynamics of slightly undercooled crystal–melt interfaces possessing strongly anisotropic and curvature-dependent surface energy and evolving under attachment–detachment limited kinetics offer a model system for the study of thermokinetic effects. The fundamental non-equilibrium feature of this dynamics is explicated through our discovery of one-dimensional convex and concave translating fronts ( solitons ) whose constant asymptotic angles provably deviate from the thermodynamically expected Wulff angles in direct proportion to the degree of undercooling. These thermokinetic solitons induce a novel emergent facet dynamics, which is exactly characterized via an original geometric matched-asymptotic analysis. We thereby discover an emergent parabolic symmetry of its coarsening facet ensembles, which naturally implies the universal scaling law L ∼ t 1 / 2 for the growth in time t of the characteristic length L .

Sign in / Sign up

Export Citation Format

Share Document