Pub Date : 2022-10-01DOI: 10.2961/jlmn.2022.02.2001
{"title":"Integration of Diffractive Optics for Top-Hat Generation and En-hanced Depth of Focus","authors":"","doi":"10.2961/jlmn.2022.02.2001","DOIUrl":"https://doi.org/10.2961/jlmn.2022.02.2001","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49615438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.2961/jlmn.2022.02.2006
Felix Bouchard, Wei Wang, M. Soldera, A. Lasagni
In this study, the wetting behavior of micro-structured poly(methyl methacrylate) (PMMA) surfaces produced by plate-to-plate hot embossing is investigated. The embossing tools used consist of stainless steel plates, which were previously processed by different laser methods, namely Direct Laser Engraving (DLE), Direct Laser Writing (DLW) and Direct Laser Interference Patterning (DLIP). Various textures with spatial periods in the range 1.7 to 900 μ m and structure depths between 0.1 and 50 μ m were produced and successfully transferred to 175 μ m thick PMMA films at an embossing temperature of 130°C. In all cases, the imprints displayed the negative of the stamp textures with a difference between the stamp depth and imprint height between 6 and 16 %. The wetting behavior of the PMMA surfaces was investigated by measuring the static contact angle of distilled water as well as linseed oil. The measurements revealed an increase in the water contact angle from 79° up to 142° on the DLE-based surfaces, whereas for linseed oil, a decrease from 20° to 5° was observed for the same sample. In addition, the PMMA foils were also treated with a hydrophobizing agent in order to modify the surface chemistry. The measurements revealed no change in the water contact angle, whereas for linseed oil, contact angles up to 142° on a hierarchical surface were reached.
{"title":"Influence of Structure Size and Geometry on Wetting Behavior of PMMA Surfaces Imprinted with Laser-Textured Stamps","authors":"Felix Bouchard, Wei Wang, M. Soldera, A. Lasagni","doi":"10.2961/jlmn.2022.02.2006","DOIUrl":"https://doi.org/10.2961/jlmn.2022.02.2006","url":null,"abstract":"In this study, the wetting behavior of micro-structured poly(methyl methacrylate) (PMMA) surfaces produced by plate-to-plate hot embossing is investigated. The embossing tools used consist of stainless steel plates, which were previously processed by different laser methods, namely Direct Laser Engraving (DLE), Direct Laser Writing (DLW) and Direct Laser Interference Patterning (DLIP). Various textures with spatial periods in the range 1.7 to 900 μ m and structure depths between 0.1 and 50 μ m were produced and successfully transferred to 175 μ m thick PMMA films at an embossing temperature of 130°C. In all cases, the imprints displayed the negative of the stamp textures with a difference between the stamp depth and imprint height between 6 and 16 %. The wetting behavior of the PMMA surfaces was investigated by measuring the static contact angle of distilled water as well as linseed oil. The measurements revealed an increase in the water contact angle from 79° up to 142° on the DLE-based surfaces, whereas for linseed oil, a decrease from 20° to 5° was observed for the same sample. In addition, the PMMA foils were also treated with a hydrophobizing agent in order to modify the surface chemistry. The measurements revealed no change in the water contact angle, whereas for linseed oil, contact angles up to 142° on a hierarchical surface were reached.","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48468927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.2961/jlmn.2022.02.2008
{"title":"Direct Laser Ablation of Glasses with Low Surface Roughness Using Femtosecond UV Laser Pulses","authors":"","doi":"10.2961/jlmn.2022.02.2008","DOIUrl":"https://doi.org/10.2961/jlmn.2022.02.2008","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47592543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.2961/jlmn.2022.02.2003
{"title":"Laser Ablation of Copper and YAG:Ce Targets in Liquid PDMS, Studied by Shadowgraph and Photoluminescence Imaging","authors":"","doi":"10.2961/jlmn.2022.02.2003","DOIUrl":"https://doi.org/10.2961/jlmn.2022.02.2003","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45573921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.2961/jlmn.2022.02.2005
{"title":"Characterization of Femtosecond Laser-induced Structural Changes in CVD Diamond by Raman Spectroscopy","authors":"","doi":"10.2961/jlmn.2022.02.2005","DOIUrl":"https://doi.org/10.2961/jlmn.2022.02.2005","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41318150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-01DOI: 10.2961/jlmn.2022.02.2007
{"title":"Comparative Analysis of the Applicability of Feed-Forward and Recurrent Neural Networks for Prediction of Surface Quality of Laser Polished Surfaces","authors":"","doi":"10.2961/jlmn.2022.02.2007","DOIUrl":"https://doi.org/10.2961/jlmn.2022.02.2007","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43466141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.2961/jlmn.2022.01.2009
{"title":"Micromechanism of High-temperature Fatigue Properties of Inconel 718 Nickel-based Alloy Treated by Laser Peening","authors":"","doi":"10.2961/jlmn.2022.01.2009","DOIUrl":"https://doi.org/10.2961/jlmn.2022.01.2009","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48420600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.2961/jlmn.2022.01.2008
{"title":"In-Situ Monitoring of Bottom-Up Percussion Drilling of Alkali-Free Alumina-Borosilicate Thin Glasses Using Single and Double Femtosecond Laser Pulses","authors":"","doi":"10.2961/jlmn.2022.01.2008","DOIUrl":"https://doi.org/10.2961/jlmn.2022.01.2008","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43569130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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