A5050252819- Microfluidic and Capillary Electrophoresis Applications
- Innovative Microfluidic and Catalytic Techniques Innovation
- Microfluidic and Bio-sensing Technologies
- Electrohydrodynamics and Fluid Dynamics
- Electrowetting and Microfluidic Technologies
- Flow Measurement and Analysis
- Mass Spectrometry Techniques and Applications
- Fluid Dynamics and Thin Films
- Analytical chemistry methods development
- Advanced Chemical Sensor Technologies
- Fluid Dynamics and Mixing
- Plasma Diagnostics and Applications
- Nanopore and Nanochannel Transport Studies
- Water Treatment and Disinfection
- Plasma and Flow Control in Aerodynamics
- Fluid Dynamics and Turbulent Flows
- Surface Modification and Superhydrophobicity
- Particle Dynamics in Fluid Flows
- Minerals Flotation and Separation Techniques
- Electrochemical Analysis and Applications
- Electrostatic Discharge in Electronics
- Biosensors and Analytical Detection
- Coal and Its By-products
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Chromatography
Central Research Institute of Electric Power Industry
2011-2020
Science Research Laboratory
2013-2019
Central Research Institute
2012
The University of Tokyo
2004-2011
Kanagawa Academy of Science and Technology
2007-2010
Japan Science and Technology Agency
2007
By modifying the walls of a glass microchannel so that one side is hydrophilic and other hydrophobic, countercurrent laminar flow an organic phase relative to aqueous effected (see picture). This system applied efficient extraction cobalt complex from toluene into water. Supporting information for this article available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z600122_s.pdf or author. Please note: The publisher not responsible content functionality any supporting supplied...
This paper reports a new technique of micro-resolution particle image velocimetry (PIV). To investigate transient phenomena in microfluidic device, high-speed micro-PIV was developed by combining camera and continuous wave (CW) laser. The applied to micro counter-current flow, consisting water butyl acetate. velocity fields the flow were visualized for time resolution 500 µs spatial 2.2 × µm2. Using technique, vortex-like motions fluorescent particles around water–butyl acetate interface...
Mercury is considered the most important heavy-metal pollutant, because of likelihood bioaccumulation and toxicity. Monitoring widespread ionic mercury (Hg(2+)) contamination requires high-throughput cost-effective methods to screen large numbers environmental samples. In this study, we developed a simple sensitive analysis for Hg(2+) in aqueous samples by combining microfluidic immunoassay solid-phase extraction (SPE). Using platform, an ultrasensitive immunoassay, which yields results...
An interfacial pressure balance model was proposed and verified for the elucidation of physical mechanism micro countercurrent flow in a hydrophilic-hydrophobic selective-modification microchannel. We considered conditions microflow phase separation, where separation entails single each output In this model, difference between two phases due to loss is balanced by Laplace generated tension at liquid-liquid interface separated phases. When sufficiently low, contact line pinned boundary...
Durch Modifikation der Wände wird eine Seite eines Glasmikrokanals hydrophil und die andere hydrophob. Auf diese Weise lässt sich ein laminarer Gegenstromfluss einer organischen Phase relativ zu wässrigen bewirken (siehe Bild). Das System für effiziente Extraktion Cobaltkomplexes aus Toluol in Wasser genutzt. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2007/z600122_s.pdf or from author. Please note: The publisher not...
A portable, highly sensitive, and continuous ammonia gas monitoring system was developed with a microfluidic chip. The consists of main unit, pumping computer which serves as an operation console. size the is 45 cm width × 30 depth height, portable realized. efficient stable extraction method by utilizing annular gas/liquid laminar flow. In addition, separation PTFE membrane arranging fluidic network in three dimensions to achieve almost zero dead volume at part. rate 100% liquid flow 3.5...
A rapid, ultrasensitive, and practical label-free impedimetric immunoassay for measuring trace levels of total polychlorinated biphenyls (PCBs) in insulating oil was developed. First, we developed a novel monoclonal antibody (RU6F9) PCBs by using designed immunogen characterized its binding affinity commercial mixtures main congeners. micro comblike gold electrode fabricated, the covalently immobilized on through self-assembled monolayer formed dithiobis-N-succinimidyl propionate. The...
Polychlorinated biphenyls (PCBs) that are present in transformer oil a common global problem because of their toxicity and environmental persistence. The development rapid, low-cost method for measurement PCBs has been matter priority the large number PCB-contaminated transformers still service. Although one methods involves an immunoassay, which uses multilayer column separation, hexane evaporation, dimethyl sulfoxide (DMSO) partitioning, antigen-antibody reaction, system, there is demand...
分離技術として注目されたマイクロ化学チップは，現在では化学・物理・バイオなどの幅広い研究分野で注目されている．これらは化学システムのマイクロ化や化学プロセスの集積化のためのマイクロ流体デバイス開発を目指した研究であり，分析時間や反応時間の短縮・試料や廃液量の低減などの利点がある．溶媒抽出や反応などを含む汎用的な化学プロセスをマイクロチップ中で実現するためには，複数溶媒の制御が必要である．そこで，油水が平行に流れるマイクロ平行多相流を利用した化学プロセスが注目されている．しかし，マイクロ平行多相流はわずかな圧力変動で不安定化してしまうため，安定なマイクロ平行多相流を形成する技術開発が必須である．本稿では，マイクロ平行多相流の制御法とそれを利用した溶媒抽出法について，著者らの研究を中心に他グループの研究も踏まえて紹介する．まずマイクロ空間の基礎物理特性について説明し，基礎物理特性を利用した流体制御法について紹介する．次にマイクロ平行多相流の例とそれらを利用したマイクロ溶媒抽出法について紹介する．
Polychlorinated biphenyls (PCBs) are persistent organic pollutants in insulating oil of a large number transformers. A rapid and economical analytical method to detect PCB contamination is still required. To address this issue, we propose here the first microfluidic screening for oil. The was pretreated using multilayer capillary column liquid–liquid partitioning. PCBs were measured kinetic exclusion assay. In order with high sensitivity, conditions assay optimized. Measurements rapidly...
抽出操作に代表される多相系流体を扱う分析操作は極めて重要であり，幅広い分野で利用される化学操作である．マイクロ流路中で多相系流体を取り扱う抽出操作は，従来の抽出操作を桁違いに高速化することが可能であることから，2000年頃から注目されている．多相系マイクロ流体は通常の実験スケールとは異なる物理特性を有しており，物理条件によって，相が平行に流れるマイクロ平行多相流や，相が交互に流れるマイクロセグメント流，流路幅よりも小さい液滴が形成されるマイクロ液滴流，壁面に沿う相と流路中心を流れる相を形成するマイクロ液膜流など，様々な流れを形成する．これらの流れを制御するため，マイクロ空間特有の流体制御技術が発展した．高速な物質移動特性と流体制御技術を組み合わせた応用研究も複数報告されている．そこで本稿では，多相系マイクロ流体の物理特性と制御技術，化学プロセスとして抽出操作について，著者らの研究を中心に紹介する．
A simplified two-step mercury extraction procedure enabled the selective and reproducible recovery from actual coal fly ash (CFA). The optimized involving conventional enzyme-linked immunosorbent assay (ELISA)-based immunoassay allowed ultra-sensitive quantification of total content in CFA. 41 CFA samples were successfully determined using above-mentioned method, results agreement with those obtained by standard instrumental analysis (thermal decomposition atomic absorption spectrometry)...