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Construction of microfluidic biochips with enhanced functionalities using 3D femtosecond laser direct writing 利用三维飞秒激光直写技术构建具有增强功能的微流控生物芯片
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.40
Ya Cheng, Y. Liao, F. He, L. Qiao, K. Sugioka, K. Midorikawa
{"title":"Construction of microfluidic biochips with enhanced functionalities using 3D femtosecond laser direct writing","authors":"Ya Cheng, Y. Liao, F. He, L. Qiao, K. Sugioka, K. Midorikawa","doi":"10.12684/ALT.1.40","DOIUrl":"https://doi.org/10.12684/ALT.1.40","url":null,"abstract":"The extreme nonlinear interaction betweenfemtosecond laser pulses and large-band-gapmaterials has enabled three-dimensional (3D)microfabrication inside transparent materials. In thepast decade, this technique has been used forcreating a variety of functional components in glassmaterials, including microoptics, microfluidics,microelectronics, micromechanics, etc. Using thesebuilding blocks, femtosecond laser microfabricationalso allows for construction of highly integratedmicrodevices. Here, we provide an overview of ourlatest progress made along this direction, includingfocal spot engineering and nanofluidic fabrication.In particular, we show that 3D micro-/nano-fluidiccomponents with arbitrary geometries can bedirectly formed inside glass. This opens uppromising prospects for a broad spectrum ofapplications based on compact and complex 3Dmicrofluidic networks. Our work shows that thistechnique holds promise for fabricating 3D hybridmicro-systems, such as Lab-on-a-chip devices andMicro Total Analysis Systems in the future.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126119641","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
Laser Processing of CFRP CFRP的激光加工
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.54
R. Weber, C. Freitag, M. Hafner, V. Onuseit, T. Graf
{"title":"Laser Processing of CFRP","authors":"R. Weber, C. Freitag, M. Hafner, V. Onuseit, T. Graf","doi":"10.12684/ALT.1.54","DOIUrl":"https://doi.org/10.12684/ALT.1.54","url":null,"abstract":"The key issue for laser-processing of carbon fiberreinforced plastics (CFRP) is the thermal damage ofboth, the matrix material and the carbon fibres. Thispaper describes the basic mechanisms leading tosuch thermal damage and its implications on thedesign of appropriate laser processing systems.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116090641","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: 1
Numerical reconstruction of 3D image in Fourier domain confocal optical coherence microscopy 傅里叶共聚焦光学相干显微镜三维图像的数值重建
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.60
A. Grebenyuk, V. Ryabukho
{"title":"Numerical reconstruction of 3D image in Fourier domain confocal optical coherence microscopy","authors":"A. Grebenyuk, V. Ryabukho","doi":"10.12684/ALT.1.60","DOIUrl":"https://doi.org/10.12684/ALT.1.60","url":null,"abstract":"Along with high longitudinal resolution of optical coherence tomography, confocal optical coherence microscopy (OCM) provides high transversal resolution due to relatively high numerical apertures. However, the presence of relatively high numerical apertures leads to limited depth of field, which reduces the speed of OCM and decreases the advantage of Fourier domain detection. In this paper we propose a numerical processing technique for three-dimensional image reconstruction in Fourier domain OCM. It takes into account not only the defocus of different parts of imaged volumetric sample, but also the effects of upper layers’ refractive index on imaging the sample inner structure. Besides providing sharp coherence gated imaging, this technique also allows for determining both the geometrical thickness and refractive index of the sample layers.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130935597","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: 3
All-Fiber Thulium-Doped Mode-Locked Lasers Based on the Nonlinear Amplifying Loop Mirror 基于非线性放大环镜的全光纤掺铥锁模激光器
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.89
M. Chernysheva, A. Krylov, P. Kryukov, N. Arutyunyan, A. S. Pozharov, E. Obraztsova, E. Dianov
{"title":"All-Fiber Thulium-Doped Mode-Locked Lasers Based on the Nonlinear Amplifying Loop Mirror","authors":"M. Chernysheva, A. Krylov, P. Kryukov, N. Arutyunyan, A. S. Pozharov, E. Obraztsova, E. Dianov","doi":"10.12684/ALT.1.89","DOIUrl":"https://doi.org/10.12684/ALT.1.89","url":null,"abstract":"We  report  on  thulium-doped  all-fiber  lasers  based on the nonlinear amplifying loop mirror and mode-locked by both a semiconductor saturable absorber (SESAM) and  single-walled  carbon  nanotubes (SWCNT).  An  intracavity  and  external dispersion management was realized with the aid of a passive germanium-silicate fiber.  SESAM  mode-locked laser  generates  as  short  as  230-fs  pulses with maximum  average  output  power  of  106 mW, corresponding to a 3.7 kW peak power and almost 2 nJ  pulse  energy.  In  contrast  to  SESAM-based laser,  the SWCNT  mode-locked  laser  generates 450-fs  pulses  of  mW-level  average  output power respectively.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115567504","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
Boundary Condition Effect On Photoacoustic Response Of Absorbing Liquid To Modulation Of Laser Intensity 边界条件对吸收液光声响应对激光强度调制的影响
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.91
A. Samokhin, N. N. Il'ichev, A. Ivochkin, E. Gulyamova
{"title":"Boundary Condition Effect On Photoacoustic Response Of Absorbing Liquid To Modulation Of Laser Intensity","authors":"A. Samokhin, N. N. Il'ichev, A. Ivochkin, E. Gulyamova","doi":"10.12684/ALT.1.91","DOIUrl":"https://doi.org/10.12684/ALT.1.91","url":null,"abstract":"The  photoacoustic  (PA)  pressure  response  of  the absorbing  liquid  (water, ethanol)  with  free  and confined  surface  to  laser  pulse  with  modulated intensity is studied.  Modulation  amplitude  of  the PA  signal  demonstrates  non-monotonous behavior during laser pulse action which can be explained as interference  between thermo-acoustic  and vaporization  mechanisms  of  pressure  generation. The phase behavior of modulated part of PA signal also  gives  important  information  on processes  in the  irradiated  matter.  Doppler  photoacoustic monitoring  (DPM)  is used  to  determine  surface movement  during  laser  irradiation  (wavelength  – 2.94 um,  pulse  duration  ~  200-300  ns,  fluence  ~ 0.3-1.6  J/cm2).  In  the  case  of free  surface  this movement  is  possible  into  the  upward  and downward  directions while  for  the  constrained irradiated surface only one movement is supposed. This supposition  is  in  agreement  with  the experiment.  However  the  total  behavior  of PA response  is  more  complicated  due  to  probably vapor  cavity  formation between liquid  and  solid surfaces.  In  particular,  despite  the  imposed constraint PA response behavior resembles the free surface case.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115921633","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: 3
Application of Photothermal and Photoacoustic Spectroscopy for the Monitoring of Aqueous Dispersions of Carbon Nanomaterials 光热与光声光谱技术在碳纳米材料水中分散体监测中的应用
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.94
D. Volkov, M. Proskurnin, I. Mikheev, D. V. Vasil'ev, M. Korobov, D. Nedosekin, V. Zharov
{"title":"Application of Photothermal and Photoacoustic Spectroscopy for the Monitoring of Aqueous Dispersions of Carbon Nanomaterials","authors":"D. Volkov, M. Proskurnin, I. Mikheev, D. V. Vasil'ev, M. Korobov, D. Nedosekin, V. Zharov","doi":"10.12684/ALT.1.94","DOIUrl":"https://doi.org/10.12684/ALT.1.94","url":null,"abstract":"Photothermal  and  optoacoustic  spectroscopy  in their  state-of-the-art  techniques—multiwavelength, scanning  and  transient—are  used  for  complex investigation  and analysis  (chemical  analysis  and the  estimation  of  physicochemical  properties and size)  of  novel  carbon  materials—fullerenes  and nanodiamonds—and  their aqueous  dispersions  as promising biomedical nanosystems. The estimation of the cluster size and the possibilities to determine subnanogram  amounts  of  both nanodiamonds  and fullerenes  by  these  techniques  are  shown.  The comparison  of fullerene  solutions  in  various solvents,  toluene, N-methylpyrrolydone and  water, is made.  The  advantages  of  the  photothermal  and optoacoustic  techniques  over conventional spectroscopies  and  the  current  limitation  are discussed. The necessity to develop robust  models for  transient  and  imaging  photothermal  techniques is outlined.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128492163","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: 5
Influence of the pre-treatment of glass substrates on Laser-Induced Backside Wet Etching using NIR Nanosecond-Pulses and Cu-based solutions 玻璃基板预处理对近红外纳秒脉冲和铜基溶液激光诱导背面湿法蚀刻的影响
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.41
P. Schwaller, S. Zehnder, U. Arx, B. Neuenschwander
{"title":"Influence of the pre-treatment of glass substrates on Laser-Induced Backside Wet Etching using NIR Nanosecond-Pulses and Cu-based solutions","authors":"P. Schwaller, S. Zehnder, U. Arx, B. Neuenschwander","doi":"10.12684/ALT.1.41","DOIUrl":"https://doi.org/10.12684/ALT.1.41","url":null,"abstract":"Laser induced backside wet etching (LIBWE) has shown to be a promising tool for the micro-structuring of transparent materials. Our group has investigated LIBWE using NIR ns-laser pulses and Cu-based absorber liquids. Focus of this paper is to investigate the influence of the pre-treatment of the transparent substrate on ablation. For this purpose experiments were done on untreated and silanized soda lime glass surfaces. Our results show that depending on the absorber liquid the silanization of the substrate either enhances or delays the ablation. Possible ablation models for the different experimental settings will be discussed.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"95 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132781894","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
Pyrometric Monitoring of Gas-Assisted Cutting of Steel Using Fiber Laser 光纤激光气体辅助切割钢的热测量监测
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.47
A. V. Dubrov, Y. Zavalov, V. D. Dubrov
{"title":"Pyrometric Monitoring of Gas-Assisted Cutting of Steel Using Fiber Laser","authors":"A. V. Dubrov, Y. Zavalov, V. D. Dubrov","doi":"10.12684/ALT.1.47","DOIUrl":"https://doi.org/10.12684/ALT.1.47","url":null,"abstract":"Measurements of the temperature in zone of action of laser radiation on the molten metal have been performed. The results are reported for different speed of cutting of mild-steel plate of 3 mm-thick with high-power fiber laser; oxygen was used as an assisted gas. Researches demonstrate that fluctuations of local temperature are related to unequal radiation absorption that associates with local deformations of surface of melt. Thus noise spectrum of those fluctuations reflects turbulent surface deformation caused by gas jet and capillary waves. The standard temperature deviation does not exceed 10 K on the frequency of 7 KHz and above, and power law of spectrum of density of fluctuations of local temperature is about “-2.8” in range of capillary turbulence. Thus we can distinguish radiation pulsation due to laser cutting from other processes of radiation affection to the sample, including unwanted, degrading the quality of technological operations. The results of investigation can be useful for monitoring laser cutting process.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115234648","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
Creation of metal materials nanoporous structures under the action of laser radiation 激光作用下金属材料纳米孔结构的制备
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.43
S. Murzin, N. Kazanskiy
{"title":"Creation of metal materials nanoporous structures under the action of laser radiation","authors":"S. Murzin, N. Kazanskiy","doi":"10.12684/ALT.1.43","DOIUrl":"https://doi.org/10.12684/ALT.1.43","url":null,"abstract":"The laser radiation exposure for creation ofnanoporous structures in the Cu-Zn alloy wasstudied. Exposure to laser pulse-periodic radiationwith pulse repetition rate up to 5000 Hz makes itpossible to form a nanoporous structure in the nearsurfacelayer. The modes of an increase of the areadepth of such structures formation up to 40...45 μmwere ascertained. The temperature and speed modeswhich provide predominant channel-type nanoporesformation with widths of about 100 nm forming ananoporous net were investigated.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121644083","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: 6
CARS diagnostics of near-critical fluid in small mesopores 近临界流体在小介孔中的CARS诊断
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.83
V. Arakcheev, V. Bagratashvili, V. Morozov
{"title":"CARS diagnostics of near-critical fluid in small mesopores","authors":"V. Arakcheev, V. Bagratashvili, V. Morozov","doi":"10.12684/ALT.1.83","DOIUrl":"https://doi.org/10.12684/ALT.1.83","url":null,"abstract":"Due to the high spacial resolution and theinterference nature, coherent anti-Stokes Ramanscattering (CARS) spectroscopy is well suited forthe diagnostics of composites based on transparentnanoporous hosts. In particular, the adsorption of afluid on the walls of nanopores and the formation ofa condensed phase in their volume leads to obvioustransformation of the CARS spectra. Recently wehave developed a model which describes thebehavior of molecular spectra at isothermalcompression in cylindrical nanopores. Calculationsbased on the model have shown a good agreementwith the experimental results for carbon dioxide innanoporous glass with pores of diameter of severalnanometers. Here we use the developed approach toinvestigate the phase behavior of carbon dioxide inglass nanopores at near-critical temperatures. It hasbeen experimentally shown that condensation innanopores occurs at relatively low pressures atsubcritical and even at supercritical temperatures.The analysis based on the developed model allowsto reveal some qualitative and quantitativecharacterizations of the shift of critical point.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123818335","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
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