Journal of Micro- and Nano-Manufacturing最新文献

Harnessing Fly Ash as Particle Reinforcement in Nature-Inspired Multilayer Composites 利用粉煤灰作为自然启发多层复合材料的颗粒增强材料

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-07-20 DOI: 10.1115/1.4065964

Jigar Patadiya, Sreenivasan S., Ramdayal Yadav, M. Naebe, B. Kandasubramanian

{"title":"Harnessing Fly Ash as Particle Reinforcement in Nature-Inspired Multilayer Composites","authors":"Jigar Patadiya, Sreenivasan S., Ramdayal Yadav, M. Naebe, B. Kandasubramanian","doi":"10.1115/1.4065964","DOIUrl":"https://doi.org/10.1115/1.4065964","url":null,"abstract":"\u0000 Strategies for strengthening the characteristics of naturally inspired multilayer composites are being sought, including inorganic platelet alignment, enhancing interlaminar collaboration between polymeric solution and printed platelets, and optimizing soft phase materials. The former tactic is significant because a particle reinforcement can use high in-plane modulus and strength of inorganic mineral bridges and asperities as much as possible. Fly ash is an immense amount of environmental waste from thermal power plants and other industries that can be effectively employed as particle reinforcement in nature-inspired composites. Herein, the study demonstrates an anomalous phenomenon combining soft microscale organic polylactic acid (PLA) components with inorganic micro grains fly ash (FA) hierarchically designed by natural organisms through dual 3D printing technique (fused deposition modeling & direct ink writing). Our investigation of composite deformation reveals that sheet nacreous architecture exhibits the highest flexural and tensile modulus, whereas foliated structure shows better impact resistance. Remarkably, as fly ash filler increases, the mechanical behavior of composites improves as large as 882 MPa and 418 MPa, flexural and elastic modulus, respectively.","PeriodicalId":513355,"journal":{"name":"Journal of Micro- and Nano-Manufacturing","volume":"120 43","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141820064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct Printing of High-resolution Metallic 3D Microneedle Arrays via Electrohydrodynamic Jet Printing 通过电流体动力喷射打印技术直接打印高分辨率金属三维微针阵列

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-07-20 DOI: 10.1115/1.4065965

Karson Wardell, Yao Yao, Qingrui Jiang, Shinghua Ding, Yi Wang, Yiwei Han

{"title":"Direct Printing of High-resolution Metallic 3D Microneedle Arrays via Electrohydrodynamic Jet Printing","authors":"Karson Wardell, Yao Yao, Qingrui Jiang, Shinghua Ding, Yi Wang, Yiwei Han","doi":"10.1115/1.4065965","DOIUrl":"https://doi.org/10.1115/1.4065965","url":null,"abstract":"\u0000 Three-dimensional (3D) microneedle arrays (MAs) have shown remarkable performances for a wide range of biomedical applications. Achieving advanced customizable 3D MAs for personalized research and treatment remains a formidable challenge. In this paper, we have developed a high-resolution Electrohydrodynamic (EHD) 3D printing process for fabricating customizable 3D MAs with economical and biocompatible molten alloy. The critical printing parameters (i.e., voltage and pressure) on the printing process for both 2D and 3D features are characterized, and an optimal set of printing parameters was obtained for printing 3D MAs. We have also studied the effect of the tip-nozzle separation speed on the final tip dimension, which will directly influence MAs' insertion performance and functions. With the optimal process parameters, we successfully EHD printed customizable 3D MAs with varying spacing distances and shank heights. A 3=3 customized 3D MAs configuration with various heights ranging from 0.8mm to 1mm and a spacing distance as small as 350 um were successfully fabricated, in which the diameter of each individual microneedle was as small as 100 um. A series of tests were conducted to evaluate the printed 3D MAs. The experimental results demonstrated that the printed 3D MAs exhibit good mechanical strength for implanting and good electrical properties for electrophysiological sensing and stimulation. All results showed the potential applications of the EHD printing technique in fabricating cost-effective customizable high-performance MAs for biomedical applications.","PeriodicalId":513355,"journal":{"name":"Journal of Micro- and Nano-Manufacturing","volume":"24 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141819379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advancements in Micro- and Nano-manufacturing From Wcmnm2023 - Part 2 来自 Wcmnm2023 的微米和纳米制造最新进展 - 第 2 部分

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-07-15 DOI: 10.1115/1.4065932

Ramesh Singh, Pavel Penchev, Tohru Sasaki

引用次数: 0

Recent Advancements in Micro- and Nano-Manufacturing From WCMNM2023 - Part 1 来自 WCMNM2023 的微米和纳米制造最新进展 - 第 1 部分

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-07-15 DOI: 10.1115/1.4065931

Ramesh Singh, Pavel Penchev, Tohru Sasaki

引用次数: 0

On the Potential of Manufacturing Multi-Material Components with Micro/Nanocellular Structures via the Hybrid Process of Electromagnetic Forming Injection Foaming 论通过电磁成型注塑发泡混合工艺制造具有微/纳米细胞结构的多材料部件的潜力

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-07-15 DOI: 10.1115/1.4065933

Mahdi Pirani, M. Hahn, Hamed Dardaei Joghan, A. E. Tekkaya, Saeed Farahani

{"title":"On the Potential of Manufacturing Multi-Material Components with Micro/Nanocellular Structures via the Hybrid Process of Electromagnetic Forming Injection Foaming","authors":"Mahdi Pirani, M. Hahn, Hamed Dardaei Joghan, A. E. Tekkaya, Saeed Farahani","doi":"10.1115/1.4065933","DOIUrl":"https://doi.org/10.1115/1.4065933","url":null,"abstract":"\u0000 Multi-material design with a combination of solid and foam structures offers a promising avenue for reducing component weight while enhancing their functionalities. However, the complexity of multi-stage manufacturing processes poses significant challenges to adopting such approaches. To address these challenges, this paper introduces an innovative concept known as Electromagnetic Forming Injection Foaming (EFIF), which integrates injection molding, forming, and foaming processes into a single hybrid process. This process begins with a simultaneous filling-forming phase, followed by supercritical fluid (SCF) assisted foaming controlled by electromagnetic forming. Through a series of experimental and analytical studies, this work investigates the feasibility and effectiveness of EFIF. First, the impact of pressure drop rate and pressure drop on cell size and density is examined through a specialized experimental setup enabling performing injection, forming, and foaming processes in a single operation. The potential influence of electromagnetic forming on foam injection molding is explored through experiments focusing on the effects of a polymer layer between sheet metal blank and the electromagnetic coils. Additionally, an analytical study evaluates the EFIF process by calculating expected pressure drop rates under different processing conditions and their influence on cell nucleation rates. The results showed the possibility of achieving pressure drop rates up to 1.5×105 bar/sec, resulting in nucleation rates up to 1.77×109 nuclei/cm3sec. Overall, this paper highlights the potential of EFIF to merge existing technologies into a scalable solution for manufacturing multi-material components with micro- to nanocellular polymer foams.","PeriodicalId":513355,"journal":{"name":"Journal of Micro- and Nano-Manufacturing","volume":"16 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141649461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiphysics Analysis and Verification of Jet Flight in Electrohydrodynamic Printing for Near-Field Electrospinning Applications 近场电纺丝应用中电流体动力印刷喷流飞行的多物理场分析与验证

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-07-01 DOI: 10.1115/1.4065874

Sanjana Subramaniam, Jian Cao, K. Ehmann

引用次数: 0

Rapid Modeling of Photopolymerization in Projection Two-Photon Lithography via an Operator Splitting Finite Difference Method 通过算子分裂有限差分法快速建立投影双光子光刻技术中的光聚合模型

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-06-10 DOI: 10.1115/1.4065706

Rushil Pingali, S. Saha

{"title":"Rapid Modeling of Photopolymerization in Projection Two-Photon Lithography via an Operator Splitting Finite Difference Method","authors":"Rushil Pingali, S. Saha","doi":"10.1115/1.4065706","DOIUrl":"https://doi.org/10.1115/1.4065706","url":null,"abstract":"\u0000 Two-photon lithography (TPL) is an attractive technique for nanoscale additive manufacturing of functional 3D structures due to its ability to print sub-diffraction features with light. Despite its advantages, it has not been widely adopted due to its slow point-by-point writing mechanism. Projection TPL (P-TPL) is a high-throughput variant that overcomes this limitation by enabling the printing of entire 2D layers at once. However, printing the desired 3D structures is challenging due to the lack of fast and accurate process models. Here, we present a fast and accurate physics-based model of P-TPL to predict the printed geometry and the degree of curing. Our model implements a finite difference method enabled by operator splitting to solve the reaction-diffusion rate equations that govern photopolymerization. When compared with finite element simulations, our model is at least a hundred times faster and its predictions lie within 5% of the predictions of the finite element simulations. This rapid modeling capability enabled performing high-fidelity simulations of printing of arbitrarily complex 3D structures for the first time. We demonstrate how these 3D simulations can predict those aspects of the 3D printing behavior that cannot be captured by simulating the printing of individual 2D layers. Thus, our models provide a resource-efficient and knowledge-based predictive capability that can significantly reduce the need for guesswork-based iterations during process planning and optimization.","PeriodicalId":513355,"journal":{"name":"Journal of Micro- and Nano-Manufacturing","volume":"1 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141363319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Infra-Red Emission for Heat Radiation from Micro-Cone Textured Metallic Sheet Device with Semi-Regular Alignment 半规则排列的微锥状纹理金属薄片装置的热辐射红外发射

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-06-04 DOI: 10.1115/1.4065684

Tatsuhiko Aizawa, Hiroki Nakata, Takeshi Nasu

引用次数: 0

Direct Ink Writing on a Rotating Mandrel - Additive Lathe Micro-Manufacturing 在旋转心轴上直接涂墨 - 快速成型车床微制造

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-05-09 DOI: 10.1115/1.4065506

Anupam Ajit Deshpande, Yayue Pan

引用次数: 0

A Shunt-Assisted Silicon Electrode for Micro Electrochemical Machining 用于微型电化学加工的分流辅助硅电极

Journal of Micro- and Nano-Manufacturing Pub Date : 2024-04-18 DOI: 10.1115/1.4065329

Yulan Zhu, Guodong Liu, Yong Li, H. Tong, Peiyao Cao

{"title":"A Shunt-Assisted Silicon Electrode for Micro Electrochemical Machining","authors":"Yulan Zhu, Guodong Liu, Yong Li, H. Tong, Peiyao Cao","doi":"10.1115/1.4065329","DOIUrl":"https://doi.org/10.1115/1.4065329","url":null,"abstract":"\u0000 Stray current causes undesired material dissolution in micro electrochemical machining (Micro ECM). The reduction of stray corrosion, caused by stray current, continues to be a major challenge for accuracy improvement. To limit the distribution of stray current, a shunt-assisted silicon electrode, with an auxiliary anode sharing stray current, is proposed in this study. The auxiliary anode is arranged outside the insulating layer of the sidewall-insulated electrode. It is proved in simulation that the auxiliary anode can help reduce the average material removal rate on the machined surface by 55% and improve processing accuracy. A fabrication process of shunt-assisted silicon electrode by bulk silicon process and thin film deposition process is presented. Micro grooves and holes are machined in ECM experiments. The angle between each side-wall and the vertical plane is less than 10°. The gap between the sidewall of the machined structures and electrode-outer-contour is about 30 µm ± 6 µm for the grooves and 45 µm ± 10 µm for the holes. These Long term experiments and consistent processing results show the shunt-assisted electrode is reliable in ECM process. But due to the stray corrosion induced by DC power supply and conservative feed method, the effect of the shunt-assisted silicon electrode in inhibiting stray corrosion is not significant. In the future, a micro ECM system with novel power supply and active control methodologies is expected to better utilize the effect of the shunt-assisted silicon electrode.","PeriodicalId":513355,"journal":{"name":"Journal of Micro- and Nano-Manufacturing","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0