نتایج جستجو برای: h bn

تعداد نتایج: 537512  

Journal: :Nanoscale 2015
Jun Hua Meng Xing Wang Zhang Hao Lin Wang Xi Biao Ren Chuan Hong Jin Zhi Gang Yin Xin Liu Heng Liu

Graphene/hexagonal boron nitride (h-BN) heterostructures have attracted a great deal of attention in recent years due to their unique and complementary properties for use in a wide range of potential applications. However, it still remains a challenge to synthesize large-area high quality samples by a scalable growth method. In this work, we present the synthesis of both in-plane and stacked gr...

Journal: :Materials research express 2022

Abstract This work studied the optical absorption properties and electronic of graphene nanosheets encapsulated in h-BN at different twisted angles based on first principles. UV–Vis spectrum shows that compared with monolayer nanosheets, absorption’s peak show a red shift its molar coefficient decreased significantly. The coefficients h-BN/graphene/h-BN heterostructures an increasing trend when...

2016
Nikhil Jain Yang Xu Bin Yu

The material behavior of graphene, a single layer of carbon lattice, is extremely sensitive to its dielectric environment. We demonstrate improvement in electronic performance of graphene nanowire interconnects with full encapsulation by lattice-matching, chemically inert, 2D layered insulator hexagonal boron nitride (hBN). A novel layer-based transfer technique is developed to construct the h-...

Journal: :THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY 1998

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده علوم 1391

گرافین یکی از مهمترین مواد شناخته شده است و از آغاز کشف تا بحال بسیاری از مطالعات را به خود جذب کرده است. اتم های بور، نیتروژن و کربن در یک ردیف از جدول تناوبی قرار دارند،پیوند اتم بور و نیتروژن در بورون نیتراید( h/bn ) ساختار مشابهی با گرافین ایجاد می کند، بنابراین انتظار داریم که ترکیبات مختلف گرافین و h/bn خواص جالبی ایجاد کند، در این پایان نامه ظرفیت گرمایی h/bn ، گرافین و ترکیبات مختلف آ...

2017
Zhongguang Xu Hao Tian Alireza Khanaki Renjing Zheng Mohammad Suja Jianlin Liu

Two-dimensional (2D) hexagonal boron nitride (h-BN), which has a similar honeycomb lattice structure to graphene, is promising as a dielectric material for a wide variety of potential applications based on 2D materials. Synthesis of high-quality, large-size and single-crystalline h-BN domains is of vital importance for fundamental research as well as practical applications. In this work, we rep...

In the frame work of relativistic density functional theory, using full potential local orbital band structure scheme (FPLO), the magnetic properties of single 3d transition metals (3d-TM) adsorbed on 2D hexagonal boron nitride (2D h-BN) are investigated. Binding energies between 3d-TM adatoms and 2D h-BN in three different compositions, local spin magnetic moments of 3d-TM and total spin magne...

2015
Qinke Wu Ji-Hoon Park Sangwoo Park Seong Jun Jung Hwansoo Suh Noejung Park Winadda Wongwiriyapan Sungjoo Lee Young Hee Lee Young Jae Song

A monolayer hexagonal boron nitride (h-BN) film with controllable domain morphology and domain size (varying from less than 1 μm to more than 100 μm) with uniform crystalline orientation was successfully synthesized by chemical vapor deposition (CVD). The key for this extremely large single crystalline domain size of a h-BN monolayer is a decrease in the density of nucleation seeds by increasin...

Journal: :Nature materials 2010
Lijie Ci Li Song Chuanhong Jin Deep Jariwala Dangxin Wu Yongjie Li Anchal Srivastava Z F Wang Kevin Storr Luis Balicas Feng Liu Pulickel M Ajayan

Two-dimensional materials, such as graphene and monolayer hexagonal BN (h-BN), are attractive for demonstrating fundamental physics in materials and potential applications in next-generation electronics. Atomic sheets containing hybridized bonds involving elements B, N and C over wide compositional ranges could result in new materials with properties complementary to those of graphene and h-BN,...

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