Article
Physics, Applied
Lihua Gao, Xiangfa Zhang, Mingzhi Wang, Faming Gao
Summary: The study found that the Knoop hardness of amber cubic boron nitride single crystals exhibits significant crystal orientation dependence on the {111} plane, with the minimum value appearing about 5 degrees away from ⟨110⟩ directions. Raman spectra measurements of cubic boron nitrides help explain the hardening of samples.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Zhaoran Chen, Dejiang Ma, Shanmin Wang, Pinwen Zhu, Qiang Tao, Baochang Liu
Summary: The TDBN-TiCN series PDC, made with Ti-coated diamond and cBN with TiCN binder, exhibited improved heat resistance, wear resistance, and impact toughness. It formed a metal-ceramic binder system under high temperature and pressure conditions, enhancing the wear resistance and impact toughness. The formation of heat resistant phases in the TDBN-TiCN series PDC contributed to an increased initial graphitization and oxidizing temperature.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Engineering, Manufacturing
Ulrich Mueller, Josef Kaiser, Sebastian Barth, Thomas Bergs
Summary: Investigation of the tribology between diamond and polycrystalline cubic boron nitride can help identify cause-effect relationships in the contact zone, leading to increased process efficiency and reduced production costs.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Chemistry, Physical
Egor Ukraintsev, Alexander Kromka, Wiebke Janssen, Ken Haenen, Daisuke Takeuchi, Petr Babor, Bohuslav Rezek
Summary: By surface treatment using electrochemically grown polypyrrole, the secondary-electron emission and photoelectron emission from boron-doped diamond are enhanced, surpassing the electron emission intensity from the hydrogen-terminated surface with negative electron affinity. This enhancement is stable for at least one month in air and persists in vacuum even after thermal annealing.
Article
Materials Science, Multidisciplinary
David F. Storm, Sergey Maximenko, Andrew C. Lang, Neeraj Nepal, Tatyana Feygelson, Bradford B. Pate, Chaffra A. Affouda, David J. Meyer
Summary: Trace amounts of Mg deposited on a diamond (100) substrate surface assist in the growth of cubic boron nitride (c-BN) through ion beam-assisted molecular beam epitaxy. Films grown with Mg exhibit primarily cubic structures, with a high density of stacking faults and twinning observed in high-resolution scanning transmission electron microscopy.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Jia Li, YongHui Du, Miao Zhang, Lili Gao, YuanYe Tian, Chao Zhang, Xing Dai
Summary: This study investigates the structural, electronic, and magnetic properties of atomic-level two-dimensional (2D) (111)-oriented cubic boron nitride (c-BN) nanosheets with semifluorinated (SF) and semihydrogenated (SH) structures using first-principles calculations. The modifications of SF and SH help maintain the cubic structures and create local magnetic moments at the terminal ends of N and H, leading to a conversion from a nonmagnetic narrow band gap to a ferromagnetic metal as the layer numbers increase.
Review
Materials Science, Multidisciplinary
Erika Janitz, Konstantin Herb, Laura A. Voelker, William S. Huxter, Christian L. Degen, John M. Abendroth
Summary: Quantum sensing using optically addressable atomic-scale defects, such as the nitrogen-vacancy (NV) center in diamond, provides new opportunities for highly localized and sensitive characterization of chemical functionality. However, the application of NV centers is hindered by degradation of sensor properties near surfaces, and covalent bonding methods with precise control are needed. This review presents the convergence of diamond surface science and NV-center physics, discussing the advantages of diamond surface properties for NV sensing applications, strategies to mitigate detrimental effects, and emerging applications in single-molecule level chemical surface studies.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Haoze Kuang, Yubo Li, Shuyi Huang, Lin Shi, Zheng Zhou, Chenxi Gao, Xiangyu Zeng, Rajagopalan Pandey, Xiaozhi Wang, Shurong Dong, Xinhua Chen, Jianyi Yang, Hangsheng Yang, Jikui Luo
Summary: The researchers in this study successfully developed a high-performance hybrid piezo/triboelectric nanogenerator (PTEG) by incorporating hexagonal boron nitride nanosheets (BNNSs) into polydimethylsiloxane (PDMS) and polyamide-6 (PA6) composites. The composite materials produced piezoelectric voltages and current densities that were significantly higher than those of the control group, demonstrating the excellent potential of BNNS-based PTEGs.
Article
Chemistry, Multidisciplinary
Xuefang Lu, Richeng Lin, Siqi Zhu, Xiaoyu Song, Cunhua Xu, Feng Huang, Wei Zheng
Summary: High-quality monoisotopic cubic 10BP single crystals were successfully synthesized using a multistep ripening method. The crystals exhibited a single cubic phase and high crystalline quality, as confirmed by structural and morphological analyses. The study also revealed that 10BP is a semiconductor with an indirect band gap beyond 2 eV, as determined through reflection spectrum, photoluminescence, and theoretical calculations. These findings highlight the feasibility of the multistep ripening method for synthesizing high-quality 10BP single crystals.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Yamei Ding, Ping He, Shaohan Li, Bo Chang, Shengli Zhang, Zhehan Wang, Jiayi Chen, Jin Yu, Sanxie Wu, Haibo Zeng, Li Tao
Summary: The research has successfully achieved full-color emission from hexagonal boron nitride quantum dots by doping different amino ligands in different solvents, with the quantum yield reaching a record high of 32.27%.
Article
Engineering, Chemical
Jeong-Hwan Oh, Minseok Kim, Seung-Hyun Hong, Yong Hee Lee, Tae-Hee Kim, Sooseok Choi
Summary: In this study, c-BN nanoparticles were successfully synthesized using a thermal plasma jet system at atmospheric pressure. The average particle size was 22 nm, and the major crystal structure was cubic. A high production yield was achieved without requiring pre-and post-processing.
ADVANCED POWDER TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Suk Hyun Kim, Kyeong Ho Park, Young Gie Lee, Seong Jun Kang, Yongsup Park, Young Duck Kim
Summary: Atomically thin two-dimensional hexagonal boron nitride (hBN) is an important material for van der Waals heterostructures and deep ultraviolet optoelectronics due to its remarkable physical properties and ultrawide bandgap. Color centers in hBN, referring to intrinsic vacancies and extrinsic impurities within the crystal lattice, exhibit distinct optical properties and various spin characteristics. The understanding and utilization of hBN color centers hold great potential for the development of next-generation optoelectronics, quantum technologies, and nanophotonics.
Article
Chemistry, Physical
Ramiz Zulkharnay, Neil L. Allan, Paul W. May
Summary: Surface modification of diamond with the addition of metals or other electropositive adsorbates can result in negative electron affinity (NEA). Scandium adsorption on diamond is energetically favorable, especially on the oxygenated surface. Most stable scandium adsorption configurations possess NEA, with the highest NEA value found on the oxygenated diamond surface.
Article
Chemistry, Physical
Benjamin Hering, Anne-Kathrin Wolfrum, Tim Gestrich, Mathias Herrmann
Summary: The research found that the TiN coating reacts with cBN at temperatures above 1200 degrees C in argon, forming a porous TiB2 layer, while no reaction occurs in nitrogen up to temperatures of 1600 degrees C. Nonetheless, the 20 and 50 nm thin coatings also undergo a recrystallization process during heat treatment up to temperatures of 1600 degrees C.
Article
Chemistry, Multidisciplinary
Xingyu Gao, Boyang Jiang, Andres E. Llacsahuanga Allcca, Kunhong Shen, Mohammad A. Sadi, Abhishek B. Solanki, Peng Ju, Zhujing Xu, Pramey Upadhyaya, Yong P. Chen, Sunil A. Bhave, Tongcang Li
Summary: This study demonstrates the successful enhancement of photoluminescence and ODMR contrast of spin defects in hexagonal boron nitride (hBN) using a gold film microwave waveguide technique. These results provide strong support for the potential use of hBN spin defects in nanoscale quantum sensing.
Article
Engineering, Electrical & Electronic
Tan Shu, Hui Li, Shengnan Shen, Wei Shen, Fuhao Cui
IEEE TRANSACTIONS ON MAGNETICS
(2018)
Article
Chemistry, Physical
Wei Shen, Shengnan Shen, Sheng Liu, Hui Li, Siyuan Nie, Yuanhui Pan, Zhiqiang Tian, Qifan Li
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Yuanhui Pan, Wei Shen, Shengnan Shen, Hui Li
APPLIED SCIENCES-BASEL
(2019)
Article
Materials Science, Multidisciplinary
Shengnan Shen, Wei Shen, Sheng Liu, Hui Li, Yinghua Chen, Haiqin Qi
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Physics, Multidisciplinary
Wei Shen, Yuanhui Pan, Shengnan Shen, Hui Li, Siyuan Nie, Jie Mei
Summary: This study reports on the intrinsic multiferroic properties of CrNCl2, CrNBr2, and CrNI2 in a two-dimensional system, showing different ground state magnetic and ferroelectric properties, providing new possibilities for applications in nanoscale devices.
Article
Chemistry, Physical
Wei Shen, Gai Wu, Lijie Li, Hui Li, Sheng Liu, Shengnan Shen, Diwei Zou
Summary: This study investigates the effects of different surface modifications on diamond (110) surface on NV centers and finds that the oxygen-terminated and nitrogen-terminated, as well as hydrogen-terminated surfaces may not be suitable for shallow NV centers, while the fluorine-terminated surface is a promising candidate.
Article
Chemistry, Physical
Chunhui Wang, Shuangshuang Zhao, Wei Shen, Xiaoming Xi, Lishan Yang, Lixiong Bai, Yahui Yang, Chenghuan Huang, Jian Zhu, Youyuan Zhou, Yitai Qian, Zhongliang Tian, Yanqing Lai, Liqiang Xu
Summary: The study successfully synthesized structure-optimized high-temperature LiCoO2 micro-bricks using the SSG method, achieving uniformly distributed Al-dopants and ideal crystal morphology. By controlling non-equilibrium intermediates and preferred crystal planes, the electrochemical performance and stability of the material were improved.
JOURNAL OF POWER SOURCES
(2022)
Article
Optics
Dekun Yang, Zhidan Lei, Lijie Li, Wei Shen, Hui Li, Chengqun Gui, Yi Song
Summary: In this work, a three-dimensional hybrid nanostructure is proposed for high-density data storage using 3D lithography technology. By combining spectra with a broad wavelength range and a large angle range, and utilizing an artificial neural network to translate the spectra to data sequences, stable information readout and high readout accuracy are achieved. Furthermore, the potential for achieving higher storage densities is investigated.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Wei Shen, Yuanhui Pan, Shengnan Shen, Hui Li, Yang Zhang, Guohao Zhang
JOURNAL OF MATERIALS CHEMISTRY C
(2019)