Article
Chemistry, Physical
Shusheng Meng, Yuhu Zuo, Hongjin Fu, Weitao Lu, Shuqiong Xu, Yunfang Li, Hongyu Tian
Summary: Molecular mechanics calculations demonstrate that boron-nitride nanoscrolls can be formed from boron-nitride nanotubes with cut helical fissures, where the pattern, diameter, and length of the nanotubes can affect the self-assembly process. The study highlights the significance of fissure design in determining the final structure formed through self-assembly.
MOLECULAR SIMULATION
(2021)
Article
Materials Science, Multidisciplinary
Zhichen Yan, Shuangyue Wang, Xianjue Chen, Geedhika K. Poduval, John A. Stride
Summary: Chemical vapor deposition (CVD) shows great potential in large-scale production of graphene films. A new method has been developed to directly grow graphene films on crystalline silicon wafers with a 300 nm oxide layer using a seeded-CVD growth approach. The use of methane as feedstock and optimized graphene seeds has improved the film formation, which consists of graphene layers formed by the coalescence of expanding graphene seeds according to SEM, X-ray photoelectron and Raman spectroscopies. The films also exhibit regions of single graphene crystallites resulting from lateral growth of the seeds. Moreover, the unilateral conductivity of the graphene films suggests potential application in device fabrication due to the presence of graphene nanoribbons.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
M. L. Pereira Junior, L. A. Ribeiro Junior, D. S. Galvao, J. M. De Sousa
Summary: In this study, the effects of hydrogenation and temperature on the self-scrolling process of carbon nanoscrolls were investigated through molecular dynamics simulations. The results showed that nanoribbons exhibited different scrolling behaviors when interacting with carbon nanotubes under different configurations.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Min-Ken Li, Adnan Riaz, Martina Wederhake, Karin Fink, Avishek Saha, Simone Dehm, Xiaowei He, Friedrich Schoeppler, Manfred M. Kappes, Han Htoon, Valentin N. Popov, Stephen K. Doom, Tobias Hertel, Frank Hennrich, Ralph Krupke
Summary: This work demonstrates that electroluminescence excitation is selective towards neutral defect-state configurations with the lowest transition energy, which, combined with gate control, leads to high spectral purity.
Article
Chemistry, Multidisciplinary
Ruhao Yang, Han Ye, Naizhang Sun, Wenjun Liu
Summary: This paper systematically investigates the spontaneous formation of MoS2 nanoscrolls and proposes a self-scrolling mechanism based on molecular dynamics simulations. The sulfur vacancies and van der Waals interactions play a crucial role in the formation process, and increasing sulfur vacancy density enhances the curvature and scrolling rate of the nanoscrolls.
Review
Chemistry, Multidisciplinary
Decai Ouyang, Na Zhang, Yuan Li, Tianyou Zhai
Summary: The atomic thickness and mechanical flexibility of 2D van der Waals materials allow for spatial design and construction. Various spatial manipulations can create nonplanar vdW nanoarchitectures with retained and tunable properties. These nanoarchitectures exhibit properties beyond 2D materials and have potential applications in optoelectronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Multidisciplinary
Young Woo Choi, Marvin L. Cohen
Summary: We investigated the electromigration forces for weakly bonded adsorbates on graphene using density-functional based calculations. The results showed that the nature of electromigration forces depends critically on the energy level alignment between the adsorbate state and the Fermi level of the graphene. For resonant adsorbates, the electromigration force is dominated by the electron wind force, while for nonresonant adsorbates, it is essentially the direct force dependent on the adsorbate charge. Moreover, we demonstrated that the magnitude of electromigration forces can be continuously adjusted through electrostatic gating for resonant adsorbates.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
X. Chen, S. F. Wen, Z. Q. Liu, Z. F. Yue
Summary: Graphene-based nanoscrolls can effectively enhance the mechanical and anti-corrosion properties of coatings, providing a new strategy for developing high-performance nano coatings.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Timofei Eremin, Valentina Eremina, Yuri Svirko, Petr Obraztsov
Summary: Covalent functionalization of single-walled carbon nanotubes (SWCNTs) can greatly enhance their photoluminescent (PL) brightness, making them suitable for infrared light emitters.
Review
Engineering, Environmental
Ankush D. Sontakke, Mihir K. Purkait
Summary: GONS is a nano-morphology of GO with unique properties, less studied for its potential applications; in-depth understanding of GONS could lead to its utilization in real-world applications. This paper critically reviews recent advancements in GONS fabrication processes, scrolling mechanism, and its potential applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Biomedical
Liyuan Wang, Hongyu Jiang, Fang Wan, Hongji Sun, Yiqing Yang, Wenjun Li, Zheyan Qian, Xuemei Sun, Peining Chen, Shiyi Chen, Huisheng Peng
Summary: A high-performance helical composite fiber (HCF) ligament, made by wrapping carbon nanotube (CNT) sheets around polyester fibers, successfully induces bone regeneration and enables normal movement in rats without the need for cell seeding or growth factors. This HCF ligament demonstrates effective repair of bone tunnel defects, in contrast to the tunnel enlargement observed with commercial artificial ligaments. The one-step surgery approach used in this study opens up new possibilities for the development of high-performance artificial tissues.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Physical
Kensuke Saito, Tomonari Koishi, Jianfeng Bao, Wataru Norimatsu, Michiko Kusunoki, Hideo Kishida, Takeshi Koyama
Summary: This study reveals that bilayer graphene exhibits longer and stronger photoluminescence compared to monolayer graphene in femtosecond excitation, with a higher carrier temperature. This suggests that bilayer graphene has superior light-emitting properties and potential for graphene-based light-emitting devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Sanjit Saha, Pritishma Lakhe, Matthew J. Mason, Bryan J. Coleman, Kailash Arole, Xiaofei Zhao, Sergey Yakovlev, Sundararajan Uppili, Micah J. Green, Rohan A. Hule
Summary: Petroleum coke can serve as a precursor for graphene production, offering a sustainable and environmentally friendly alternative to traditional uses. Electrochemical exfoliation is used to produce graphene nanosheets from petroleum coke, separating the final product from unreacted material through a two-step centrifuging process. This innovative approach has the potential to create value-added nanomaterials in the petroleum industry and reduce emissions by utilizing low-value industrial streams.
NPJ 2D MATERIALS AND APPLICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Hsin-Jung Tsai, Wei-Chun Li, Wen-Kuang Hsu
Summary: Composites made from multi-walled carbon nanotubes and polydimethylsiloxane exhibit excellent piezoresistivity at elastic limits, with high sensitivity and matched resistance changes during bending and twisting. Pulse-like resistance changes are attributed to the rapid increase in intertube spacing. The movement and segmentation of tube aggregates explain the tube mobility range and sensing mechanism.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Chemistry, Physical
J. Stephen Yan, Marco Orecchioni, Flavia Vitale, Julia A. Coco, Guillaume Duret, Salvatore Antonucci, Sushma Sri Pamulapati, Lauren W. Taylor, Oliver S. Dewey, Moises Di Sante, Anna Maria Segura, Cansu Gurcan, Fabio Di Lisa, Acelya Yilmazer, Mark D. McCauley, Jacob T. Robinson, Mehdi Razavi, Klaus Ley, Lucia G. Delogu, Matteo Pasquali
Summary: The macroscopic carbon nanotube fiber (CNTF) has been shown to have good cytocompatibility with various cell lines and immune compatibility in tests conducted at cellular, organ, and systemic levels. These findings suggest that CNTF production does not result in any toxic byproducts, and macroscopic carbon nanotube structures should be evaluated separately from individualized CNTs and unstructured CNT aggregates for toxicological assessments.
