Large-Scale Growth of High-Quality Hexagonal Boron Nitride Crystals at Atmospheric Pressure from an Fe–Cr Flux

2017 ◽  
Vol 17 (9) ◽  
pp. 4932-4935 ◽  
Author(s):  
Song Liu ◽  
Rui He ◽  
Zhipeng Ye ◽  
Xiaozhang Du ◽  
Jingyu Lin ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Atmospheric Pressure ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Scale Growth ◽  
High Quality

scholarly journals Large-Scale Synthesis of High-Quality Hexagonal Boron Nitride Nanosheets for Large-Area Graphene Electronics

Nano Letters ◽  
2012 ◽  
Vol 12 (2) ◽  
pp. 714-718 ◽  
Author(s):  
Kang Hyuck Lee ◽  
Hyeon-Jin Shin ◽  
Jinyeong Lee ◽  
In-yeal Lee ◽  
Gil-Ho Kim ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Large Area ◽  
High Quality ◽  
Boron Nitride Nanosheets ◽  
Large Scale Synthesis

Large Scale Growth and Characterization of Atomic Hexagonal Boron Nitride Layers

Nano Letters ◽  
2010 ◽  
Vol 10 (8) ◽  
pp. 3209-3215 ◽  
Author(s):  
Li Song ◽  
Lijie Ci ◽  
Hao Lu ◽  
Pavel B. Sorokin ◽  
Chuanhong Jin ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Scale Growth ◽  
Nitride Layers

scholarly journals Controlled synthesis of uniform multilayer hexagonal boron nitride films on Fe2B alloy

RSC Advances ◽  
2019 ◽  
Vol 9 (18) ◽  
pp. 10155-10158 ◽  
Author(s):  
Zhiyuan Shi ◽  
Guangyuan Lu ◽  
Peng Yang ◽  
Tianru Wu ◽  
Weijun Yin ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Controlled Synthesis ◽  
High Quality ◽  
Cvd Growth ◽  
Boron Nitride Films

CVD growth of large scale and high quality multilayer h-BN.

scholarly journals 2D-3D integration of hexagonal boron nitride and a high-κ dielectric for ultrafast graphene-based electro-absorption modulators

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Hitesh Agarwal ◽  
Bernat Terrés ◽  
Lorenzo Orsini ◽  
Alberto Montanaro ◽  
Vito Sorianello ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hafnium Oxide ◽  
High Speed ◽  
Hexagonal Boron Nitride ◽  
Temperature Stability ◽  
Cost Effective ◽  
Fold Increase ◽  
Building Blocks ◽  
High Quality ◽  
New Device

AbstractElectro-absorption (EA) waveguide-coupled modulators are essential building blocks for on-chip optical communications. Compared to state-of-the-art silicon (Si) devices, graphene-based EA modulators promise smaller footprints, larger temperature stability, cost-effective integration and high speeds. However, combining high speed and large modulation efficiencies in a single graphene-based device has remained elusive so far. In this work, we overcome this fundamental trade-off by demonstrating the 2D-3D dielectric integration in a high-quality encapsulated graphene device. We integrated hafnium oxide (HfO2) and two-dimensional hexagonal boron nitride (hBN) within the insulating section of a double-layer (DL) graphene EA modulator. This combination of materials allows for a high-quality modulator device with high performances: a ~39 GHz bandwidth (BW) with a three-fold increase in modulation efficiency compared to previously reported high-speed modulators. This 2D-3D dielectric integration paves the way to a plethora of electronic and opto-electronic devices with enhanced performance and stability, while expanding the freedom for new device designs.

scholarly journals Facile Synthesis of High-Quality Nano-Size 10B-Enriched Fibers of Hexagonal Boron Nitride

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 222
Author(s):  
Pervaiz Ahmad ◽  
Mayeen Uddin Khandaker ◽  
Fida Rehman ◽  
Nawshad Muhammad ◽  
Mohammad Rashed Iqbal Faruque ◽  
...  
Keyword(s):  
Boron Nitride ◽  
High Intensity ◽  
Hexagonal Boron Nitride ◽  
Internal Space ◽  
Facile Synthesis ◽  
High Quality ◽  
Crystalline Nature ◽  
Nano Size ◽  
Advanced Applications

The interesting properties of hexagonal boron nitride (h-BN) and its potential uses in thermo-structural advanced applications have been limited or restricted by its inherent brittleness, which can easily be eliminated by its fibers (h-BN) in nanoscale dimensions. The current study is based on the synthesis of nanoscale 10B-enriched fibers of h-BN (10BNNFs) from 10B in the precursors instead of B in two-hour annealing at 900 °C and one-hour growth at 1000 °C. All of the 10BNNFs are randomly curved and highly condensed or filled from 10h-BN species with no internal space or crack. XRD peaks reported the 10h-BN phase and highly crystalline nature of the synthesized 10BNNFs. 10h-BN phase and crystalline nature of 10BNNFs are confirmed from high-intensity peaks at 1392 (cm−1) in Raman and FTIR spectroscopes.

Generation of High-Density Quantum Emitters in High-Quality, Exfoliated Hexagonal Boron Nitride

2021 ◽  
Vol 13 (39) ◽  
pp. 47283-47292
Author(s):  
Yongliang Chen ◽  
Chi Li ◽  
Simon White ◽  
Milad Nonahal ◽  
Zai-Quan Xu ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
High Density ◽  
High Quality ◽  
Quantum Emitters

Synthesis of centimeter-scale high-quality polycrystalline hexagonal boron nitride films from the Fe flux

Nanoscale ◽  
2021 ◽  
Author(s):  
Yifei Li ◽  
Xin Wen ◽  
Changjie Tan ◽  
Ning Li ◽  
Ruijie Li ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Two Dimensional ◽  
High Quality ◽  
Boron Nitride Films

Owing to its irreplaceable roles in new functional devices, such as universal substrates and excellent layered insulators, high-quality hexagonal BN (hBN) crystals are exceedingly required in the field of two-dimensional...

scholarly journals Dynamic Radiation Effects Induced by Short-Pulsed GeV U-Ion Beams in Graphite and h-BN Targets

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Philipp Bolz ◽  
Philipp Drechsel ◽  
Alexey Prosvetov ◽  
Pascal Simon ◽  
Christina Trautmann ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Young’S Modulus ◽  
Radiation Effects ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Young's Modulus ◽  
Target Surface ◽  
High Dose ◽  
Velocity Signal ◽  
Isotropic Graphite

Targets of isotropic graphite and hexagonal boron nitride were exposed to short pulses of uranium ions with ∼1 GeV kinetic energy. The deposited power density of ∼3 MW/cm³ generates thermal stress in the samples leading to pressure waves. The velocity of the respective motion of the target surface was measured by laser Doppler vibrometry. The bending modes are identified as the dominant components in the velocity signal recorded as a function of time. With accumulated radiation damage, the bending mode frequency shifts towards higher values. Based on this shift, Young’s modulus of irradiated isotropic graphite is determined by comparison with ANSYS simulations. The increase of Young’s modulus up to 3 times the pristine value for the highest accumulated fluence of 3 × 1013 ions/cm2 is attributed to the beam-induced microstructural evolution into a disordered structure similar to glassy carbon. Young’s modulus values deduced from microindentation measurements are similar, confirming the validity of the method. Beam-induced stress waves remain in the elastic regime, and no large-scale damage can be observed in graphite. Hexagonal boron nitride shows lower radiation resistance. Circular cracks are generated already at low fluences, risking material failure when applied in high-dose environment.

scholarly journals Blue-light-emitting color centers in high-quality hexagonal boron nitride

2019 ◽  
Vol 100 (15) ◽  
Author(s):  
Brian Shevitski ◽  
S. Matt Gilbert ◽  
Christopher T. Chen ◽  
Christoph Kastl ◽  
Edward S. Barnard ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Blue Light ◽  
Hexagonal Boron Nitride ◽  
Color Centers ◽  
High Quality ◽  
Light Emitting

Environmentally friendly, scalable exfoliation for few-layered hexagonal boron nitride nanosheets (BNNSs) by multi-time thermal expansion based on released gases

2019 ◽  
Vol 7 (46) ◽  
pp. 14701-14708 ◽  
Author(s):  
Zhi-lin Cheng ◽  
Zhan-sheng Ma ◽  
Hong-liang Ding ◽  
Zan Liu
Keyword(s):  
Thermal Expansion ◽  
Boron Nitride ◽  
Large Scale ◽  
Hexagonal Boron Nitride ◽  
Environmentally Friendly ◽  
Boron Nitride Nanosheets ◽  
Novel Approach

A novel approach to exfoliate BNNSs on a large scale via multi-time thermal expansion is described.

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