Optofluidics, Microfluidics and Nanofluidics最新文献_第3页

In-line characterization and identification of micro-droplets on-chip 片上微液滴的在线表征与识别

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2013-0002

E. Weber, D. Puchberger-Enengl, F. Keplinger, M. Vellekoop

{"title":"In-line characterization and identification of micro-droplets on-chip","authors":"E. Weber, D. Puchberger-Enengl, F. Keplinger, M. Vellekoop","doi":"10.2478/optof-2013-0002","DOIUrl":"https://doi.org/10.2478/optof-2013-0002","url":null,"abstract":"Abstract We present an integrated optofluidic sensor system for in-line characterization of micro-droplets. The device provides information about the droplet generation frequency, the droplet volume, and the content of the droplet. Due to its simplicity this principle can easily be implemented with other microfluidic components on one and the same device. The sensor is based on total internal reflection phenomena. Droplets are pushed through a microfluidic channel which is hit by slightly diverging monochromatic light. At the solid-liquid interface parts of the rays experience total internal reflection while another part is transmitted. The ratio of reflected to transmitted light depends on the refractive index of the solution. Both signals are recorded simultaneously and provide a very stable output signal for the droplet characterization. With the proposed system passing droplets were counted up to 320 droplets per second and droplets with different volumes could be discriminated. In a final experiment droplets with different amounts of dissolved CaCl2 were distinguished based on their reflected and transmitted light pattern. This principle can be applied for the detection of any molecules in microdroplets which significantly influence the refractive index of the buffer solution.","PeriodicalId":144806,"journal":{"name":"Optofluidics, Microfluidics and Nanofluidics","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126086347","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

Modular Platforms for Optofluidic Systems 光流体系统模块化平台

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2013-0001

M. Brammer, T. Mappes

引用次数: 3

Multimode Sensor of Fluids Based on Porous Film 基于多孔膜的多模流体传感器

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2014-0006

N. Raicevic, A. Maluckov, J. Petrovic

引用次数: 0

T-junction droplet generator realised in lithium niobate crystals by laser ablation 激光烧蚀在铌酸锂晶体中实现t结液滴发生器

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2014-0003

G. Pozza, S. Kroesen, G. Bettella, A. Zaltron, M. Esseling, G. Mistura, P. Sartori, E. Chiarello, M. Pierno, Cornelia Denz, C. Sada

引用次数: 10

Structured attachment of bacterial molecular motors for defined microflow induction 用于定义微流诱导的细菌分子马达的结构连接

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2014-0001

M. Woerdemann, Florian Hörner, C. Denz

{"title":"Structured attachment of bacterial molecular motors for defined microflow induction","authors":"M. Woerdemann, Florian Hörner, C. Denz","doi":"10.2478/optof-2014-0001","DOIUrl":"https://doi.org/10.2478/optof-2014-0001","url":null,"abstract":"Abstract Bacterial rotational motor complexes that propel flagellated bacteria possess unique properties like their size of a few nanometres and the ability of selfreproduction that have led to various exciting applications including biohybrid nano-machines. One mandatory prerequisite to utilize bacterial nano motors in fluid applications is the ability to transfer force and torque to the fluid, which usually can be achieved by attachment of the bacterial cell to adequate surfaces. Additionally, for optimal transfer of force or torque, precise control of the position down to the single cell level is of utmost importance. Based on a PIV (particle image velocimetry) evaluation of the induced flow of single bacteria,we propose and demonstrate attachment of arbitrary patterns of motile bacterial cells in a fast light-based two-step process for the first time to our knowledge. First, these cells are pre-structured by holographic optical tweezers and then attached to a homogeneous, polystyrene-coated surface. In contrast to the few approaches that have been implemented up to now and which rely on pre-structured surfaces, our scheme allows for precise control on a single bacterium level, is versatile, interactive and has low requirements with respect to the surface preparation.","PeriodicalId":144806,"journal":{"name":"Optofluidics, Microfluidics and Nanofluidics","volume":"3478 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127509112","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: 7

Birefringence improvement in azopolymer doped with MFI zeolite nanoparticles 掺MFI沸石纳米颗粒对偶氮聚合物双折射性能的改善

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2014-0005

D. Nazarova, L. Nedelchev, S. Mintova

引用次数: 7

Soap Films as 1D waveguides 作为一维波导的肥皂膜

Optofluidics, Microfluidics and Nanofluidics Pub Date : 1900-01-01 DOI: 10.2478/optof-2014-0002

O. Emile, J. Emile

引用次数: 2