Using ab initio methods we calculate the thermoelectric and spin thermoelectric properties of zigzag SiC nanoribbons, asymmetrically terminated with hydrogen. Such nanoribbons display a ferromagnetic ground state, with edge magnetic moments oriented in parallel. Both thermopower and spin thermopower have been determined as a function of chemical potential and temperature. To find the thermoelectric efficiency, the total heat conductance has been calculated, i.e. the electronic and phonon contributions. Numerical results for SiC nanoribbons are compared with those for graphene and silicene ones.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c4cp04884a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advances, Challenges, and Applications of Graphene and Carbon Nanotube-Reinforced Engineering Ceramics.
Nanomaterials (Basel)
November 2024
Institute for Technical Physics and Materials Science, HUN-REN Centre for Energy Research, Konkoly-Thege Miklós Str. 29-33, 1121 Budapest, Hungary.
Engineering ceramics and their composites are widely used owing to their excellent properties, including high wear, corrosion and heat resistance, low friction coefficient, and low thermal conductivity; thus, the current paper presents a comprehensive review of the most common types of engineering ceramics, demonstrating their key properties, advantages, potential applications, and challenges. This paper also provides prevailing methods for tackling the engineering ceramic challenges and maximizing their applicability. This review paper focuses on alumina (AlO), silicon carbide (SiC), zirconia (ZrO), aluminum nitride (AlN), and silicon nitride (SiN), and explores their usability in automotive, aerospace, and tribological applications.
View Article and Find Full Text PDFKilogram Flash Joule Heating Synthesis with an Arc Welder.
ACS Nano
December 2024
Applied Physics Graduate Program and Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, Texas 77005, United States.
Flash Joule heating has been used as a versatile solid-state synthesis method in the production of a wide range of products, including organic, inorganic, and ceramic products. Conventional flash Joule heating systems are large and customized, presenting significant barriers in the cost of assembly, the expertise needed to operate, and uniformity of results between different systems. Even laboratory-scale flash Joule heating systems struggle to operate above 10 g capacity, and they suffer from poor temperature controllability.
View Article and Find Full Text PDFDevelopment of rare earth element-based hybrid aluminium composites using stir casting process.
Sci Rep
November 2024
Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, 600 062, India.
Aerospace and marine industries are constantly in search of materials that can provide good strength and durability while also being lightweight. Aluminium composites with adequate reinforcements have been proven to be effective in achieving incredible mechanical properties while also maintaining a good strength to weight ratio. Numerous studies have been done to study the various possibilities of matrix reinforcement combinations in aluminium composites.
View Article and Find Full Text PDFOsteoblast Growth in Quaternized Silicon Carbon Nitride Coatings for Dental Implants.
Materials (Basel)
November 2024
Department of Restorative Dental Sciences, Division of Prosthodontics, College of Dentistry, University of Florida, Gainesville, FL 32610, USA.
The demand for dental implants has increased, establishing them as the standard of care for replacing missing teeth. Several factors contribute to the success or failure of an implant post-placement. Modifications to implant surfaces can enhance the biological interactions between bone cells and the implant, promoting better outcomes.
View Article and Find Full Text PDFPossible formation of H hydrates in different nanotubes and surfaces using molecular dynamics simulation.
RSC Adv
October 2024
Dep. of Chemistry, Faculty of Science, Ferdowsi University of Mashhad Mashhad Iran.
Article Synopsis
- This study simulated water molecules in carbon, boron nitride (BN), and silicon carbide (SiC) nanotubes as well as between parallel graphene, BN, and SiC surfaces to investigate the formation of hydrogen hydrates.
- Results indicated that a more ordered heptagonal ice structure developed in BN nanotubes, while the most ordered gas hydrates were achieved in the graphene system, despite hydrates forming in all surface systems.
- The analysis revealed that BN nanotubes and graphene surfaces facilitated higher diffusion rates of water molecules and spontaneous formation of hydrogen hydrates, emphasizing their potential for creating more structured hydrate forms compared to other materials.
Want 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!