The mechanism of few-layer graphene growth on the technologically relevant cubic-SiC/Si(001) substrate is uncovered using high-resolution core-level and angle-resolved photoelectron spectroscopy, low-energy electron microscopy, and microspot low-energy electron diffraction. The thickness of the graphitic overlayer supported on the silicon carbide substrate and related changes in the surface structure are precisely controlled by monitoring the progress of the surface graphitization in situ during high-temperature graphene synthesis, using a combination of microspectroscopic techniques. The experimental data reveal gradual changes in the preferential graphene lattice orientations at the initial stages of the few-layer graphene growth on SiC(001) and can act as reference data for controllable growth of single-, double-, and triple-layer graphene on silicon carbide substrates.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsnano.8b07237 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Catalytic CuO/Cu Site Trades off the Coupling and Etching Reactions of Carbon Intermediates for CO-Assisted Graphene Synthesis.
Small
January 2025
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China.
In the chemical vapor deposition (CVD) synthesis of graphene, the surficial chemical state of the metal substrate has exerted key roles in all elemental reaction steps determining the growth mechanism of graphene. Herein, a CO-participated annealing procedure is designed to construct catalytic CuO/Cu sites on Cu foil for the graphene CVD synthesis with CO/CH as carbon sources. These CuO/Cu species can catalyze the CH decomposition and subsequent C─C coupling to form C intermediates for fast growth of monolayer hexagonal graphene domains with a diameter of ≈30 µm within 0.
View Article and Find Full Text PDFEmerging trends and innovations in polysaccharide-derived EMI shielding materials: A comprehensive review of bibliometric and performance analysis.
Int J Biol Macromol
January 2025
Department of Physics, Hasanuddin University, Makassar 90245, Indonesia. Electronic address:
The increasing reliance on electronic devices has created a pressing demand for high-performance and sustainable electromagnetic interference shielding materials. While conventional materials, such as metals and carbon-based composites, offer excellent shielding capabilities, they are hindered by high costs, environmental concerns, and limitations in scalability. Polysaccharide-based materials, including cellulose, chitosan, and alginate, represent a promising alternative due to their biodegradability, renewability, and versatility.
View Article and Find Full Text PDFBio-inspired preparation of Ag NPs, rGO, and Ag/rGO nanocomposites for acoustical, antioxidant, and plant growth regulatory studies.
Sci Rep
January 2025
Department of Chemistry, Devchand College, Arjunnagar, Kolhapur, MH, 591237, India.
Acoustical properties are essential for understanding the molecular interactions in fluids, as they influence the physicochemical behavior of liquids and determine their suitability for diverse applications. This study investigated the acoustical parameters of silver nanoparticles (Ag NPs), reduced graphene oxide (rGO), and Ag/rGO nanocomposite nanofluids at varying concentrations. Ag NPs and Ag/rGO nanocomposites were synthesized via a Bos taurus indicus (BTI) metabolic waste-assisted method and characterized using advanced techniques, including XRD, TEM, Raman, DLS, zeta potential, and XPS.
View Article and Find Full Text PDFEmerging Nanoparticle-Based Diagnostics and Therapeutics for Cancer: Innovations and Challenges.
Pharmaceutics
January 2025
Research Centre for Life Science and Healthcare, Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute (CBI), University of Nottingham Ningbo China, Ningbo 315000, China.
Malignant growth is expected to surpass other significant causes of death as one of the top reasons for dismalness and mortality worldwide. According to a World Health Organization (WHO) study, this illness causes approximately between 9 and 10 million instances of deaths annually. Chemotherapy, radiation, and surgery are the three main methods of treating cancer.
View Article and Find Full Text PDFNanoparticle-Doped Antibacterial and Antifungal Coatings.
Polymers (Basel)
January 2025
Department of Chemical Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India.
Antimicrobial polymeric coatings rely not only on their surface functionalities but also on nanoparticles (NPs). Antimicrobial coatings gain their properties from the addition of NPs into a polymeric matrix. NPs that have been used include metal-based NPs, metal oxide NPs, carbon-based nanomaterials, and organic NPs.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!