Materials最新文献_第5页

Geopolymers Manufactured by the Alkali Activation of Mining and Ceramic Wastes Using a Potential Sustainable Activator from Olive Stone Bottom Ashes.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030688

Raul Carrillo Beltran, Elena Picazo Camilo, Griselda Perea Toledo, Francisco Antonio Corpas Iglesias

{"title":"Geopolymers Manufactured by the Alkali Activation of Mining and Ceramic Wastes Using a Potential Sustainable Activator from Olive Stone Bottom Ashes.","authors":"Raul Carrillo Beltran, Elena Picazo Camilo, Griselda Perea Toledo, Francisco Antonio Corpas Iglesias","doi":"10.3390/ma18030688","DOIUrl":"10.3390/ma18030688","url":null,"abstract":"The reuse of by-products as alternative raw materials to traditional construction materials is required in order to ensure sustainable development in the construction sector and is a significant and important focus in the fields of materials science. This study developed geopolymers using by-products from mining, ceramics, and olive industries, including slate stone cutting sludge (SSCS) and chamotte (CH) as aluminosilicate sources, and olive biomass bottom ash (OSBA) as an alkaline activator with sodium silicate. A key novelty of the research lies in the use of SSCS, an underexplored by-product in geopolymerization studies, as a viable aluminosilicate source. The geopolymers were prepared with varying weight ratios of SSCS, CH, and OSBA/Na₂SiO₃ (1.7, 1.9, 2.2, and 2.4). Physical and mechanical tests determined the optimal formulation, while FTIR and SEM analyses revealed the material's chemical and structural evolution. The FTIR analysis detected the quartz and carbonate phases, indicating incomplete quartz dissolution and carbonate formation during calcination. The SEM analysis revealed a dense microstructure with reduced porosity and enhanced geopolymerization in samples with higher OSBA content. The optimal geopolymer (60% OSBA, 30% CH, OSBA/Na₂SiO₃ ratio of 2.2) achieved a compressive strength of 33.1 MPa after 28 days. These findings demonstrate the feasibility of producing geopolymers using SSCS, CH, and OSBA, promoting the reuse of industrial by-products as sustainable alternatives to conventional binders.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820223/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of High-Pressure Hydrostatic Extrusion on Mechanical Properties of Printed with Fused Deposition Modeling PLA and PLA-Diatomaceous Earth Composites.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030683

Adrian Dubicki, Mariusz Kulczyk, Karol Szlązak, Maciej Łojkowski, Krzysztof Jan Kurzydłowski

{"title":"The Effect of High-Pressure Hydrostatic Extrusion on Mechanical Properties of Printed with Fused Deposition Modeling PLA and PLA-Diatomaceous Earth Composites.","authors":"Adrian Dubicki, Mariusz Kulczyk, Karol Szlązak, Maciej Łojkowski, Krzysztof Jan Kurzydłowski","doi":"10.3390/ma18030683","DOIUrl":"10.3390/ma18030683","url":null,"abstract":"Three-dimensional printing enables rapid prototyping, customization, and on-demand production. Polylactide is a popular biopolymer filament used in 3D printing. However, due to its brittleness and low mechanical strength, it often needs to be reinforced with filler particles. Diatomaceous earth shows great potential as a filler material due to its abundant and natural occurrence, biocompatibility, and environmental friendliness, as well as its excellent mechanical properties. Cold hydrostatic extrusion was used to improve the compressive strength of 3D-printed parts. Both neat and reinforced with 10% diatomaceous earth filaments were used to 3D print cylindrical billets, followed by post-processing using hydrostatic extrusion. X-ray microtomography showed a significant reduction in total and open porosity and average pore size, from ~20 µm to less than 10 µm in the Polylactide (PLA) and Diatomaceous (DE) composite. Compression tests showed a significant improvement in the compressive strength of PLA from ~60 MPa to ~100 MPa, while PLA with DE achieved an impressive almost twofold increase to 80-120 MPa. This was attributed to a reduction in pore size, as well as pore closure, which mitigates crack initiation in semi-brittle PLA. In addition, it has been proposed that hydro extrusion-induced structural rearrangement is an important strengthening factor.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interlayer Parallel Connection of Multiple Helmholtz Resonators for Optional Broadband Low Frequency Sound Absorption.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030682

Xiaocui Yang, Qiang Li, Xinmin Shen, Binbin Zhou, Ning Wang, Enshuai Wang, Xiaonan Zhang, Cheng Shen, Hantian Wang, Shunjie Jiang

{"title":"Interlayer Parallel Connection of Multiple Helmholtz Resonators for Optional Broadband Low Frequency Sound Absorption.","authors":"Xiaocui Yang, Qiang Li, Xinmin Shen, Binbin Zhou, Ning Wang, Enshuai Wang, Xiaonan Zhang, Cheng Shen, Hantian Wang, Shunjie Jiang","doi":"10.3390/ma18030682","DOIUrl":"10.3390/ma18030682","url":null,"abstract":"The Helmholtz resonance acoustic metamaterial is an effective sound absorber in the field of noise reduction, especially in the low-frequency domain. To overcome the conflict between the number of Helmholtz resonators and the volume of the rear cavity for each chamber with a given front area of single-layer metamaterial, a novel acoustic metamaterial of interlayer parallel connection of multiple Helmholtz resonators (IPC-MHR) is proposed in this study. The developed IPC-MHR consists of several layers, and the Helmholtz resonators among different layers are connected in parallel. The sound absorption property of IPC-MHR is studied by finite element simulation and further optimized by particle swarm optimization algorithm, and it is validated by standing wave tube measurement with the sample fabricated by additive manufacturing. The average sound absorption coefficient in the discrete frequency band [200 Hz, 300 Hz] U [400 Hz, 600 Hz] U [800 Hz, 1250 Hz] is 0.7769 for the IPC-MHR with four layers. Through the optimization of the thickness of each layer, the average sound absorption coefficient in 250-750 Hz is up to 0.8068. Similarly, the optimized IPC-MHR with six layers obtains an average sound absorption coefficient of 0.8454 in 300-950 Hz, which exhibits an excellent sound absorption performance in the low-frequency range with a wide band. The IPC-MHR can be used to suppress obnoxious noise in practical applications.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11821057/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser-Micro-Annealing of Microcrystalline Ni-Rich NCM Oxide: Towards Micro-Cathodes Integrated on Polyethylene Terephthalate Flexible Substrates.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030680

Lara Ahrens, Martin Mikulics, Steffen Schröder, Joachim Mayer, Hilde Helen Hardtdegen

{"title":"Laser-Micro-Annealing of Microcrystalline Ni-Rich NCM Oxide: Towards Micro-Cathodes Integrated on Polyethylene Terephthalate Flexible Substrates.","authors":"Lara Ahrens, Martin Mikulics, Steffen Schröder, Joachim Mayer, Hilde Helen Hardtdegen","doi":"10.3390/ma18030680","DOIUrl":"10.3390/ma18030680","url":null,"abstract":"Here in this work, we report on micro-Raman spectroscopy investigations performed on freestanding Ni-rich NCM (LixNi0.83Co0.11Mn0.06O2) microcrystals transferred to flexible polyethylene terephthalate (PET) host substrates. This technological procedure introduces a first building block for future on-chip-integrated micro-accumulators for applications in flexible optoelectronics, sensors, microbiology, and human medicine. An after-synthesis thermal treatment was used to help improve the material homogeneity and perfection of the cathode material. To this end, a local laser micro-annealing process was applied to the freestanding Ni-rich NCM microcrystals. The thermally initialized structural processes in the singular micro-cathode units were characterized and determined by micro-Raman spectroscopy. Micro-Raman mapping images revealed the evolution of a recrystallization process after the local annealing procedure. Furthermore, laser micro-annealing led to the suppression of the pristine \"polycrystalline morphology\" of the investigated micro-cathode regions. Besides the dominant characteristic Raman mode at ~1085 cm-1, most likely ascribed to lithium carbonate, metal oxides with Raman modes around ~550 cm-1 were identified. This highly efficient transfer and integration technology represents a basic building block towards micrometer-sized accumulators for a large range of emerging applications.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11821219/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microscopic and Biomechanical Analysis of PEEK Interspinous Spacers for Spinal Fusion Applications. 用于脊柱融合的聚醚醚酮（PEEK）棘间垫片的显微和生物力学分析。

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030679

Elliot Alonso Alcántara-Arreola, Aida Verónica Rodríguez-Tovas, José Alejandro Hernández-Benítez, Christopher René Torres-SanMiguel

{"title":"Microscopic and Biomechanical Analysis of PEEK Interspinous Spacers for Spinal Fusion Applications.","authors":"Elliot Alonso Alcántara-Arreola, Aida Verónica Rodríguez-Tovas, José Alejandro Hernández-Benítez, Christopher René Torres-SanMiguel","doi":"10.3390/ma18030679","DOIUrl":"10.3390/ma18030679","url":null,"abstract":"Spinal fusion is a surgical intervention used to join two or more vertebrae in the spine. An often-used method involves the placement of intervertebral spacers. They are commonly composed of biocompatible materials like polyetheretherketone. It has strength, longevity, and the capacity to interact harmoniously with the human body. Standardized mechanical tests were performed on two distinct implants to assess their biomechanical characteristics. The studies were conducted at a velocity of 2 mm/min. The stopping criteria were determined based on the loads sustained by the 50th percentile. Furthermore, the chemical composition of the implants was assessed using Raman spectroscopy. The implant created via subtractive manufacturing has a significant change in its elastic region at a force of 1300 N, and it begins subsidence when vertebrae are subjected to a load of 1500 N. The integration of microscopic characterization techniques with the mechanical analysis of prostheses in numerous case studies facilitates the biomechanical evaluation of implants.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820224/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143409005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Performance of Wood Frame Construction with Phase Change Material in the Brazilian Subtropical Climate. 巴西亚热带气候下使用相变材料的木结构建筑的热性能。

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030681

Julia Vieira, Raquel Oliveira, Ana Abreu, Marcin Różycki, Tomasz Niemiec, Mateusz Sitarz

{"title":"Thermal Performance of Wood Frame Construction with Phase Change Material in the Brazilian Subtropical Climate.","authors":"Julia Vieira, Raquel Oliveira, Ana Abreu, Marcin Różycki, Tomasz Niemiec, Mateusz Sitarz","doi":"10.3390/ma18030681","DOIUrl":"10.3390/ma18030681","url":null,"abstract":"In a Brazilian subtropical climate, Wood Frame construction, valued for sustainability and thermal inertia, is being tested for compatibility with Phase Change Materials (PCMs) to improve thermal performance. This study addresses the lack of research on these technologies in Brazil and evaluates the thermal performance of a single-story Wood Frame housing envelope with and without PCM in Curitiba-PR, located in southern Brazil with Cfb climate classification. Dynamic energy simulation followed ASHRAE Standard 55-2017 criteria for occupant thermal comfort. The results indicated that integrating PCM with thermal insulation (EPS) significantly improved thermal performance, reducing the daily indoor temperature range by up to 6.4 °C and increasing comfortable hours by 20%. However, Wood Frame construction without either BioPCM or EPS proved inadequate in achieving the minimum level of thermal performance required by Brazilian standards. This underscores the importance of evaluating potential users' thermal comfort conditions alongside the building's overall thermal performance. It also emphasizes the need to carefully consider the level of thermal insulation in conjunction with PCM for effective design decisions. Thus, this study promotes the integration of PCM and thermal insulation to enhance thermal comfort and sustainability in Wood Frame constructions in the subtropical climate of Brazil.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11821043/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143409051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of Yttrium Oxide on the Synthesis and Sintering Properties of Cordierite-Mullite Composite Ceramics.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030687

Hui Zhang, Lu Feng, Weibo Mao, Quanming Liu, Liang Zhao, Hong Zhang

{"title":"Impact of Yttrium Oxide on the Synthesis and Sintering Properties of Cordierite-Mullite Composite Ceramics.","authors":"Hui Zhang, Lu Feng, Weibo Mao, Quanming Liu, Liang Zhao, Hong Zhang","doi":"10.3390/ma18030687","DOIUrl":"10.3390/ma18030687","url":null,"abstract":"To enhance the mechanical properties and high-temperature performance of cordierite-mullite composite ceramics, yttrium oxide (Y2O3), a rare earth metal oxide, was employed as a sintering aid to fabricate these composites via in situ synthesis and non-pressure sintering. This study systematically investigated the formation mechanisms of the cordierite and mullite phases and examined the effects of yttrium oxide on the densification behavior, mechanical properties, volumetric stability, and thermal shock resistance. The results indicate that incorporating yttrium oxide (1.5-6.0 wt%) not only promoted the formation of the cordierite phase but also refined the microstructure and enhanced the thermal shock stability at a sintering temperature of 1350 °C. An optimal addition of 3 wt% yttrium oxide ensures that the primary phases are cordierite and mullite, with a microstructure characterized by uniformly distributed micropores, hexagonal short-columnar cordierite, and interlocking rod-like mullite, thereby significantly improving both the mechanical properties and thermal shock stability. Specifically, the room-temperature compressive strength increased by 121%, the flexural strength increased by 177%, and, after three thermal shock cycles at 1100 °C, the retention rates for compressive and flexural strengths were 87.66% and 71.01%, respectively. This research provides a critical foundation for enhancing the mechanical properties and high-temperature service performance of cordierite-mullite saggers used in lithium battery cathode materials.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Undercut Bolt Anchor Depth on Failure Cone Geometry: A Numerical FEM Analysis and Experimental Verification.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030686

Józef Jonak, Andrzej Wójcik, Robert Karpiński, Kamil Jonak

{"title":"Effect of Undercut Bolt Anchor Depth on Failure Cone Geometry: A Numerical FEM Analysis and Experimental Verification.","authors":"Józef Jonak, Andrzej Wójcik, Robert Karpiński, Kamil Jonak","doi":"10.3390/ma18030686","DOIUrl":"10.3390/ma18030686","url":null,"abstract":"This study examined the influence of the effective embedment depth hef of undercut anchors and the diameter of their heads on the formation of the so-called cone failure angle α. Cone failure formation during simulated anchor pull-out tests was analyzed numerically using the Finite Element Method (FEM) with the ABAQUS software and the XFEM algorithm. The analysis was conducted for three sizes of undercut anchor heads and four embedment depths. The numerical analysis results were compared with field test results obtained during pull-out tests of anchors installed in a rock medium (sandstone). Good agreement was observed between the numerical and field test results. The results of the numerical study are highly consistent with those obtained during the field survey. Moreover, they align closely with findings from previous numerical studies conducted by members of the research team, as presented in earlier publications. For the assumed simulation and field test conditions (sedimentary rocks, gray sandstone), no clear correlation was found between the embedment depth or the anchor head diameter and the value of the cone failure angle in the initial phase of the failure zone development. This result contrasts with certain findings reported in the literature. Many existing studies on anchor bolts focus on material properties or load-bearing capacity, but lack an in-depth analysis of how anchor depth influences the geometry of the failure cone. This research addresses that gap, providing valuable insights with practical implications for design codes and safety evaluations.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11819717/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of Strength Degradation of Dental Zirconia Due to Glazing: Dependence on Glaze Thickness.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030684

Kazumichi Nonaka, Mitsuji Teramae, Giuseppe Pezzotti

{"title":"Mechanisms of Strength Degradation of Dental Zirconia Due to Glazing: Dependence on Glaze Thickness.","authors":"Kazumichi Nonaka, Mitsuji Teramae, Giuseppe Pezzotti","doi":"10.3390/ma18030684","DOIUrl":"10.3390/ma18030684","url":null,"abstract":"Glazing is a common method for smoothing the surface of zirconia and imitating the appearance of natural teeth. Several authors have previously reported that glazing reduces the strength of zirconia. However, the dependence of strength on glaze thickness and the mechanism of strength reduction remains unclear. Clarifying these factors is particularly important for improving the reliability of zirconia prostheses. In this study, three types of zirconia were glazed with various thicknesses, and their strength was evaluated. The results showed that the strength of the materials decreased with increasing glaze thickness. The decrease in the fracture load of the glazed test specimen stopped at a load where the stress necessary to fracture the glaze material was applied to the surface of the glaze layer. Furthermore, the strength reduction mechanism was investigated using FEM analysis, fractography, and Raman spectroscopy. The results suggested that the strength reduction due to glazing was a consequence of the crack-tip stress concentration developed upon the preliminary fracture of the glaze layer.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820251/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterizing Six Percolation Cases in Flexible Electronic Composites: A Monte Carlo-Based 3D Compressive Percolation Model for Wearable Pressure Sensors.

IF 3.1 3区材料科学

Materials Pub Date : 2025-02-04 DOI: 10.3390/ma18030685

Sang-Un Kim, Joo-Yong Kim

{"title":"Characterizing Six Percolation Cases in Flexible Electronic Composites: A Monte Carlo-Based 3D Compressive Percolation Model for Wearable Pressure Sensors.","authors":"Sang-Un Kim, Joo-Yong Kim","doi":"10.3390/ma18030685","DOIUrl":"10.3390/ma18030685","url":null,"abstract":"This study employs a Monte Carlo-based 3D compressive percolation model to systematically analyze the electrical behavior of flexible electronic composites under compressive deformation. By simulating the spatial distribution and connectivity of conductive particles, this study identifies six distinct percolation cases, each describing a unique connectivity evolution under strain. The model reveals that excessive initial connectivity leads to saturation effects, reducing sensitivity, while a high Poisson's ratio (≥0.3) causes connectivity loss due to shear plane expansion. Notably, asymmetric particle shapes, such as cylinders and rectangles, exhibit superior percolation behavior, forming infinite clusters at lower strain thresholds (~0.4) compared to spherical particles (~0.5). Monte Carlo simulations with 3000 particles validate these findings, showing consistent trends in percolation behavior across different deformation states. By classifying and quantifying these six connectivity scenarios, this research provides a structured framework for optimizing flexible sensor designs, ensuring an optimal balance between conductivity and sensitivity. These findings contribute to advancing flexible electronics, particularly in wearable health monitoring, robotics, and smart textiles.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820820/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143408766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0