We were successful in growing a dense Cu film on Al2O3 substrates at room temperature using an aerosol deposition (AD) method. The characteristics of Cu films were investigated through electrical resistivity and X-ray photoelectron spectroscopy (XPS). The resistivity of Cu films was low (9.2-12.5 μΩ cm), but it was five to seven times higher than that of bulk copper. The deterioration of the resistivity indicates that a Cu2O phase with CuO occurs due to a particle-to-particle collision. Moreover, the growth of Cu films was investigated by observing their microstructures. At the initial stage in the AD process, the impacted particles were flattened and deformed on a rough Al2O3 substrate. The continuous collision of impacted particles leads to the densification of deposited coating layers due to the plastic deformation of particles. The bonding between the Cu particles and the rough Al2O3 substrate was explained in terms of the adhesive properties on the surface roughness of Al2O3 substrates. It was revealed that the roughness of substrates was considerably associated with the mechanical interlocking between Cu particles and rough Al2O3 substrate.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4805680 | PMC |
| http://dx.doi.org/10.1186/s11671-016-1378-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Improvement of glucose detection using 10 nm AlO thin film on diamond solution-gate field-effect transistor.
Talanta
January 2025
Key Laboratory for Physical Electronics and Devices of the Ministry of Education & School of Science & Shaanxi Key Laboratory of Information Photonic Technique & Institute of Wide Bandgap Semiconductors, Xi'an Jiaotong University, Xi'an, 710049, China. Electronic address:
Glucose detection is crucial for diagnosis, prevention and treatment of diabetes mellitus. In this work, 10 nm AlO thin film was introduced on the channel of diamond solution-gate field-effect transistor (SGFET) to improve the performance of glucose detection. AFM results show the roughness of channel surface increased after AlO thin film deposition.
View Article and Find Full Text PDFExperimental study on the influence of lapping plate materials on the quality of both sides cylindrical rollers machining.
Sci Rep
January 2025
College of Mechanical Engineering, Quzhou University, Quzhou, 324000, China.
The both-sides machining method can obtain high precision cylindrical rollers, but there is a drawback that the lapping plate is easy to wear, which restricts further improvement in the quality of rollers machining. Aiming to solve this problem, a both-sides machining method using hard ceramic lapping plate is proposed. Friction and wear experiments with different lapping plate materials, along with the corresponding comparative machining experiments, demonstrated the superior performance of AlO ceramic lapping plate in terms of roundness (0.
View Article and Find Full Text PDFDroplet-Scale Conversion of Aluminum into Transparent Aluminum Oxide by Low-Voltage Anodization in an Electrowetting System.
Langmuir
January 2025
Information Device Science Laboratory, Division of Materials Science, Nara Institute of Science and Technology, Ikoma City, Nara 630-0192, Japan.
Article Synopsis
- A novel technique was developed to convert aluminum into transparent aluminum oxide through a small-scale anodization process using droplets.
- Anodization at 2 V for 10 minutes produced a uniform and transparent oxide layer, with chemical analysis showing the presence of aluminum oxide/hydroxide.
- The process resulted in a smoother surface and randomly distributed nanopores, indicating potential for broader applications in sustainable electronics and other fields.
Optimizing CNC turning of AISI D3 tool steel using Al₂O₃/graphene nanofluid and machine learning algorithms.
Heliyon
December 2024
School of Mechanical Engineering, Institute of Technology, Wallaga University, P.O. Box 395, Nekemte, Ethiopia.
Turning AISI (American Iron and Steel Institute) D3 tool steel can be challenging due to a lack of optimal process parameters and proper coolant application to achieve high surface quality and temperature control. Machine learning helps in predicting the optimal parameters, whereas nanofluids enhance cooling efficiency while preserving both the tool and the workpiece. This work intends to utilize advanced machine learning approaches to optimize process parameters with the application of hybrid nanofluids (AlO/graphene) during the CNC turning of AISI D3.
View Article and Find Full Text PDFAirborne-Particle Abrasion vs. Hydrofluoric Acid Etching of Dental Ceramics: Impact on the Tensile Bond Strength.
Materials (Basel)
November 2024
Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany.
Article Synopsis
- The study compared airborne-particle abrasion to hydrofluoric acid etching as a method for preparing silicate ceramic restorations for adhesive bonding.
- The research involved various substrates (feldspar, lithium silicate, and zirconia) undergoing different abrasion conditions, and evaluated surface characteristics and tensile bond strength after treatment.
- Results indicated that airborne-particle abrasion, particularly using 50 µm particles at 0.1 MPa, effectively enhances bond strength and surface roughness, suggesting it as a viable alternative to traditional etching methods for ceramics.
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!