Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The thermal expansion behavior of Cu plays a critical role in the bonding mechanism of Cu/SiO hybrid joints. In this study, artificial voids, which were observed to evolve using a focused ion beam, were introduced at the bonded interfaces to investigate the influence of compressive stress on bonding quality and mechanisms at elevated temperatures of 250 °C and 300 °C. The evolution of interfacial voids serves as a key indicator for assessing bonding quality. We quantified the bonding fraction and void fraction to characterize the bonding interface and found a notable increase in the bonding fraction and a corresponding decrease in the void fraction with increasing compressive stress levels. This is primarily attributed to the Cu film exhibiting greater creep/elastic deformation under higher compressive stress conditions. Furthermore, these experimental findings are supported by the surface diffusion creep model. Therefore, our study confirms that compressive stress affects the Cu-Cu bonding interface, emphasizing the need to consider the depth of Cu joints during process design.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11122854 | PMC |
| http://dx.doi.org/10.3390/ma17102236 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evolutionary features of microscopic damage in shale under unloading action.
PLoS One
September 2025
Datong Hongtai Mine Engineering Construction Co., Ltd. of Jinneng Holding Coal Industry Group, Datong, China.
To reveal the microscopic damage evolution law of rocks under the effect of unloading disturbances with different amplitudes, electron microscope scanning, nuclear magnetic resonance (NMR), and triaxial compression tests were carried out. The evolution patterns of surface and internal pore types and mechanical properties of rock specimens after unloading perturbation were analyzed. In this paper, a classification of the ratio of dmax/dmin (dmax and dmin refer to the maximum and minimum pore size of each pore, respectively) is proposed to examine the pore and crack evolution extension development on the surface of the specimen.
View Article and Find Full Text PDFExperimental study on axial compression performance of I-shaped aluminum concrete columns embedded in CFRP-PVC square tubes.
PLoS One
September 2025
Guangxi Transportation Investment Group Co., Ltd., Nanning, Guangxi, China.
To investigate the axial compressive behavior of CFRP-PVC square tube-embedded aluminum concrete columns, five specimens and one control specimen without I-shaped aluminum were tested under uniaxial compression, with the number of CFRP layers and spacing as variable parameters. The failure modes, load-displacement responses, and mechanical properties such as peak load, ductility, stiffness, and energy dissipation were systematically analyzed. Results showed that the incorporation of I-shaped aluminum improved the peak load and ductility by an average of 48.
View Article and Find Full Text PDFTuning the Electrical Property and Electronic Band Structures of Organic Semiconductors via Surface Tension.
J Phys Chem Lett
September 2025
National Laboratory of Solid-State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China.
Stress engineering is an effective way to tune the performance of semiconductors, which has been verified in the work of inorganic and organic single-crystal semiconductors. However, due to the limitations of the vapor-phase growth preparation conditions, the deposited polycrystalline organic semiconductors are more susceptible to residual stress. Therefore, it is of great research significance to develop a low-cost stress engineering applicable to vapor-deposited semiconductors.
View Article and Find Full Text PDFA biomechanical investigation of three fixation methods for unilateral denis type II sacral fractures using finite element analysis.
Front Bioeng Biotechnol
August 2025
Department of Orthopaedics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China.
Objective: Due to its inherent high instability, the selection of fixation strategies for unilateral Denis type II sacral fractures remains a controversial challenge in the field of traumatic orthopedics. This study focuses on unilateral Denis type II sacral fractures. By applying three different fixation methods, it aims to explore their biomechanical properties and provide a theoretical basis for optimizing clinical fixation protocols.
View Article and Find Full Text PDFReversible dendrite-free Li-plating/stripping electrochemistry achieved by stress-regulating carbon aerogel.
Natl Sci Rev
September 2025
College of Chemistry, Huazhong Agricultural University, Wuhan 430070, China.
The stress distribution in Li metal strongly affects the interfacial Li-ion diffusion, thereby influencing the morphology of plated Li and the performance of the battery. Here, we report a mechano-electrochemical coupling strategy that utilizes an arched structured carbon aerogel to achieve stable Li-plating/stripping electrochemistry. The arch-structured carbon aerogel can actively regulate stress distributions in response to the compressive stresses induced by Li deposition, generating the transition of stress from compressive on the convex surface to tensile on the concave surface, which can effectively promote the Li-migration kinetics and thus suppress the non-uniform deposition of Li.
View Article and Find Full Text PDF