scholarly journals Subangstrom Edge Relaxations Probed by Electron Microscopy in Hexagonal Boron Nitride

2012 ◽  
Vol 109 (20) ◽  
Author(s):  
Nasim Alem ◽  
Quentin M. Ramasse ◽  
Che R. Seabourne ◽  
Oleg V. Yazyev ◽  
Kris Erickson ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride

scholarly journals Characterization of hexagonal boron nitride layers on nickel surfaces by low-energy electron microscopy

2017 ◽  
Vol 659 ◽  
pp. 31-42 ◽  
Author(s):  
P.C. Mende ◽  
Q. Gao ◽  
A. Ismach ◽  
H. Chou ◽  
M. Widom ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Low Energy ◽  
Energy Electron ◽  
Low Energy Electron ◽  
Nitride Layers

Electron microscopy of hexagonal boron nitride powder

1995 ◽  
Vol 30 (12) ◽  
pp. 3193-3199 ◽  
Author(s):  
J. Shimomura ◽  
T. Funahashi ◽  
T. Koitabashi
Keyword(s):  
Electron Microscopy ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Nitride Powder ◽  
Boron Nitride Powder

scholarly journals Catalyst-Free Bottom-Up Synthesis of Few-Layer Hexagonal Boron Nitride Nanosheets

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Shena M. Stanley ◽  
Amartya Chakrabarti ◽  
Joshua J. DeMuth ◽  
Vanessa E. Tempel ◽  
Narayan S. Hosmane
Keyword(s):  
Electron Microscopy ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
X Ray Diffraction ◽  
Bottom Up ◽  
X Ray ◽  
Boron Nitride Nanosheets ◽  
Catalyst Free ◽  
Transmission Electron ◽  
Novel Catalyst

A novel catalyst-free methodology has been developed to prepare few-layer hexagonal boron nitride nanosheets using a bottom-up process. Scanning electron microscopy and transmission electron microscopy (both high and low resolution) exhibit evidence of less than ten layers of nanosheets with uniform dimension. X-ray diffraction pattern and other additional characterization techniques prove crystallinity and purity of the product.

scholarly journals Atomic-scale dynamics of triangular hole growth in monolayer hexagonal boron nitride under electron irradiation

Nanoscale ◽  
2015 ◽  
Vol 7 (24) ◽  
pp. 10600-10605 ◽  
Author(s):  
Gyeong Hee Ryu ◽  
Hyo Ju Park ◽  
Junga Ryou ◽  
Jinwoo Park ◽  
Jongyeong Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Boron Nitride ◽  
Electron Beam Irradiation ◽  
Hexagonal Boron Nitride ◽  
Atomic Scale ◽  
Atomic Resolution ◽  
Beam Irradiation ◽  
Transmission Electron ◽  
Hole Growth ◽  
Over Time

The production of holes by electron beam irradiation in hexagonal boron nitride is monitored over time using atomic resolution transmission electron microscopy.

Microcrystalline Cubic Boron Nitride/Amorphous Hydrogenated Boron Nitride Mixed Phase Thin Films

1994 ◽  
Vol 358 ◽  
Author(s):  
Shu-Han Lin ◽  
Bernard J. Feldman
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Cubic Boron Nitride ◽  
Mixed Phase ◽  
Good Adhesion ◽  
Transmission Electron ◽  
Plasma Decomposition ◽  
Absorption Measurements

ABSTRACTTransparent and insulating thin films have been grown by the plasma decomposition of B2H6, NH3, and H2, at a substrate temperature of 250°C. From chemical composition, transmission electron microscopy, infrared absorption, and optical absorption measurements, the thin films are determined to be a mixed phase of crystalline cubic boron nitride and amorphous hydrogenated boron nitride. Also, the films have significantly more boron than nitrogen, a large concentration of hydrogen, a very large bandgap, strong infrared aborption due to both hexagonal boron nitride and boron icosahedra, and good adhesion to various substrates.

scholarly journals Synthesis of Three-Dimensionally Interconnected Hexagonal Boron Nitride Networked Cu-Ni Composite

2021 ◽  
Vol 59 (7) ◽  
pp. 505-513
Author(s):  
Zahid Hussain ◽  
Hye-Won Yang ◽  
Byung-Sang Choi
Keyword(s):  
Electron Microscopy ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Compaction Pressure ◽  
Chemical Properties ◽  
Chemical Vapor ◽  
Organic Chemical ◽  
Transmission Electron ◽  
Ni Alloy ◽  
Composite Energy

A three-dimensionally interconnected hexagonal boron nitride (3Di-hBN) networked Cu-Ni (3DihBN-Cu-Ni) composite was successfully synthesized in situ using a simple two-step process which involved the compaction of mixed Cu-Ni powders (70 wt.% Cu and 30 wt.% Ni) into a disc followed by metal-organic chemical vapor deposition (MOCVD) at 1000 oC. During MOCVD, the Cu-Ni alloy grains acted as a template for the growth of hexagonal boron nitride (hBN) while decaborane and ammonia were used as precursors for boron and nitrogen, respectively. Boron and nitrogen atoms diffused into the Cu-Ni solution during the MOCVD process and precipitated out along the Cu-Ni interfaces upon cooling, resulting in the formation of the 3Di hBN-Cu-Ni composite. Energy-dispersive spectroscopic analysis confirmed the presence of boron and nitrogen atoms at the interfaces of Cu-Ni alloy grains. Optical microscopy examination indicated that there was a minimum amount of bulk hBN at a certain compaction pressure (280 MPa) and sintering time (30 min). Scanning electron microscopy and transmission electron microscopy revealed that an interconnected network of hBN layers surrounding the Cu-Ni grains developed in the 3Di-hBN-Cu-Ni composite. This 3Di-hBN network is expected to enhance the mechanical, thermal, and chemical properties of the 3Di-hBN-Cu-Ni composite. Moreover, the foam-like 3Di-hBN extracted from 3Di-hBN-Cu-Ni composite could have further applications in the fields of biomedicine and energy storage.

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