Pub Date : 2021-12-01DOI: 10.2961/jlmn.2021.03.2007
{"title":"Fabrication of Pure Copper Rod by Multi-beam Laser Metal Deposi-tion with Blue Diode Lasers","authors":"","doi":"10.2961/jlmn.2021.03.2007","DOIUrl":"https://doi.org/10.2961/jlmn.2021.03.2007","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42669973","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 : 2021-12-01DOI: 10.2961/jlmn.2021.03.2006
{"title":"Observation of SiO2Nanoparticle Formation via UV Pulsed Laser Ablation in a Background Gas","authors":"","doi":"10.2961/jlmn.2021.03.2006","DOIUrl":"https://doi.org/10.2961/jlmn.2021.03.2006","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48981920","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 : 2021-12-01DOI: 10.2961/jlmn.2021.03.2002
{"title":"Effects of Laser Peening Parameters on Plastic Deformation in Aqueous Glycerol Solution as Plasma Confinement Layer","authors":"","doi":"10.2961/jlmn.2021.03.2002","DOIUrl":"https://doi.org/10.2961/jlmn.2021.03.2002","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41559466","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 : 2021-12-01DOI: 10.2961/jlmn.2021.03.2008
{"title":"Time-Resolved Pump–Probe Imaging of Ablation Phenomena in Silica Glass Using Visible Femtosecond Laser","authors":"","doi":"10.2961/jlmn.2021.03.2008","DOIUrl":"https://doi.org/10.2961/jlmn.2021.03.2008","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47802053","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 : 2021-12-01DOI: 10.2961/jlmn.2021.03.2004
M. Tsuyama, Y. Sugimoto, M. Heya, Hitoshi Nakano
In laser peening, a high amplitude shock impulse is necessary. The shock impulse can be increased by confinement of the laser-produced plasma through the acoustic impedance of a plasma confinement layer. In this study, a solid-state medium having high acoustic impedance was used as the plasma confinement layer for laser peening. It was found that elimination of the acoustic impedance mismatch is important for efficient laser peening. By injecting silicone oil into the gap between the solid-state medium and the target sample, the influence of impedance mismatch was reduced and efficient laser peening was achieved. Greater values of hardness and compressive residual stress were obtained in comparison with water used as the plasma confinement layer.
{"title":"Laser Peening with Solid-State Medium Having High Acoustic Impedance as Plasma Confinement Layer","authors":"M. Tsuyama, Y. Sugimoto, M. Heya, Hitoshi Nakano","doi":"10.2961/jlmn.2021.03.2004","DOIUrl":"https://doi.org/10.2961/jlmn.2021.03.2004","url":null,"abstract":"In laser peening, a high amplitude shock impulse is necessary. The shock impulse can be increased by confinement of the laser-produced plasma through the acoustic impedance of a plasma confinement layer. In this study, a solid-state medium having high acoustic impedance was used as the plasma confinement layer for laser peening. It was found that elimination of the acoustic impedance mismatch is important for efficient laser peening. By injecting silicone oil into the gap between the solid-state medium and the target sample, the influence of impedance mismatch was reduced and efficient laser peening was achieved. Greater values of hardness and compressive residual stress were obtained in comparison with water used as the plasma confinement layer.","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47458893","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 : 2021-12-01DOI: 10.2961/jlmn.2021.03.2001
{"title":"Direct Laser Writing of Functional Optofluidic Elements in Porous Silicate Matrix","authors":"","doi":"10.2961/jlmn.2021.03.2001","DOIUrl":"https://doi.org/10.2961/jlmn.2021.03.2001","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42537205","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 : 2021-10-01DOI: 10.2961/jlmn.2021.02.2007
Yuri Tei, Haohao Wang, Y. Kitamoto, M. Hara, H. Wada
Gd2O3:Er,Yb upconversion nanoparticles were obtained by laser ablation in liquid, and their optical properties were investigated. These nanoparticles are suitable for photodynamic therapy which is a cancer treatment approach. Since the nanoparticles are for medical use, purity is required. Thus, laser ablation in liquid was selected as a suitable production method because it produces no impurities. Nanoparticles were prepared by Nd:YAG (532-nm) laser-irradiation to Gd2O3:Er,Yb target in water. The nanoparticles’ compositions were analyzed using X-ray diffraction, which showed that the nanoparticles and target raw material have the same peak. The primary particle size was measured using scanning electron microscopy, which revealed the coarse (>100 nm) and fine (<100 nm) nanoparticles. The secondary particle size was investigated by dynamic light-scattering, which indicated the aggregation of fine nanoparticles. Upconversion luminescence and photon number were measured using a photoluminescence spectrometer with 980-nm laser excitation. Visible light was obtained due to upconversion. The photoluminescence intensity increased until the middle fluence and slightly decreased at the high fluence. Besides, the photon number was increased from 2.3 to 3.2. It is considered that nonradiative deactivation of fine nanoparticles affected the emission characteristics and photon number.
{"title":"Preparation of Gd2O3:Er,Yb Nanoparticles by Laser Ablation in Liquid and Their Optical Properties for Biomedical Application","authors":"Yuri Tei, Haohao Wang, Y. Kitamoto, M. Hara, H. Wada","doi":"10.2961/jlmn.2021.02.2007","DOIUrl":"https://doi.org/10.2961/jlmn.2021.02.2007","url":null,"abstract":"Gd2O3:Er,Yb upconversion nanoparticles were obtained by laser ablation in liquid, and their optical properties were investigated. These nanoparticles are suitable for photodynamic therapy which is a cancer treatment approach. Since the nanoparticles are for medical use, purity is required. Thus, laser ablation in liquid was selected as a suitable production method because it produces no impurities. Nanoparticles were prepared by Nd:YAG (532-nm) laser-irradiation to Gd2O3:Er,Yb target in water. The nanoparticles’ compositions were analyzed using X-ray diffraction, which showed that the nanoparticles and target raw material have the same peak. The primary particle size was measured using scanning electron microscopy, which revealed the coarse (>100 nm) and fine (<100 nm) nanoparticles. The secondary particle size was investigated by dynamic light-scattering, which indicated the aggregation of fine nanoparticles. Upconversion luminescence and photon number were measured using a photoluminescence spectrometer with 980-nm laser excitation. Visible light was obtained due to upconversion. The photoluminescence intensity increased until the middle fluence and slightly decreased at the high fluence. Besides, the photon number was increased from 2.3 to 3.2. It is considered that nonradiative deactivation of fine nanoparticles affected the emission characteristics and photon number.","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43206735","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 : 2021-10-01DOI: 10.2961/jlmn.2021.02.2003
{"title":"Kinetics of Nanoparticles Formation Under UV, VIS and IR Nanosecond Laser Irradiation of a Silver-Ions-Enriched Glass","authors":"","doi":"10.2961/jlmn.2021.02.2003","DOIUrl":"https://doi.org/10.2961/jlmn.2021.02.2003","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47690662","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 : 2021-10-01DOI: 10.2961/jlmn.2021.02.2004
{"title":"Processing of Hierarchical Structures on Stainless Steel by Direct Laser Interference Patterning","authors":"","doi":"10.2961/jlmn.2021.02.2004","DOIUrl":"https://doi.org/10.2961/jlmn.2021.02.2004","url":null,"abstract":"","PeriodicalId":54788,"journal":{"name":"Journal of Laser Micro Nanoengineering","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45841317","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：