UKAI Tomofumi

J-GLOBAL         Last updated: May 29, 2019 at 22:56
 
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Name
UKAI Tomofumi
Affiliation
Toyo University
Section
Graduate School of Interdisciplinary New Science
Job title
Associate Professor
Degree
Ph.D.(Toyo University)
Research funding number
60531879

Research Areas

 
 

Education

 
 
 - 
2000
Graduate School, Division of Engineering, Toyo University
 

Published Papers

 
A. T.M.Saiful Islam, Md Enamul Karim, Arifuzzaman Rajib, Yuki Nasuno, Tomofumi Ukai, Shunji Kurosu, Masahide Tokuda, Yasuhiko Fujii, Yoshikata Nakajima, Tatsuro Hanajiri, Hajime Shirai
Applied Physics Letters   114    May 2019
© 2019 Author(s). We have investigated an n-type crystalline Si (n-Si) heterojunction solar cell with organic conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) on a plane and isotropically textured n-Si subst...
Piche Dominique, Tavernaro Isabella, Fleddermann Jana, Lozano Juan G., Varambhia Aakash, Maguire Mahon L., Koch Marcus, Ukai Tomofumi, Hernandez Rodriguez Armando J., Jones Lewys, Dillon Frank, Reyes Molina Israel, Mitzutani Mai, Gonzalez Dalmau Evelio R., Maekawa Toru, Nellist Peter D., Kraegeloh Annette, Grobert Nicole
ACS APPLIED MATERIALS & INTERFACES   11(7) 6724-6740   Feb 2019   [Refereed]
Vivekanandan Palaninathan, Sreejith Raveendran, Ankit K. Rochani, Neha Chauhan, Yasushi Sakamoto, Tomofumi Ukai, Toru Maekawa, D. Sakthi Kumar
Journal of Tissue Engineering and Regenerative Medicine   12 1634-1645   Jul 2018
Copyright © 2018 John Wiley & Sons, Ltd. Cellulosic materials have been of tremendous importance to mankind since its discovery due to its superior properties and its abundance in nature. Recently, an increase in demand for alternate green mater...
Yoshikata Nakajima, Tomofumi Ukai, Toshiaki Shimizu, Kazuhei Ogata, Seiki Iwai, Naohiro Takahashi, Atsushi Aki, Toru Mizuki, Toru Maekawa, Tatsuro Hanajiri
Analytical Chemistry   89 12450-12457   Nov 2017
© 2017 American Chemical Society. Combining the electrophoresis and conventional Coulter methods, we previously proposed the electrophoretic Coulter method (ECM), enabling simultaneous analysis of the size, number, and zeta potential of individual...
Amandeep Jindal, Suddhasatwa Basu, Neha Chauhan, Tomofumi Ukai, D. Sakthi Kumar, K. T. Samudhyatha
Journal of Power Sources   342 165-174   Feb 2017
© 2016 Elsevier B.V.Carbon nitride (CNx) nanofibers is successfully utilised as cathode catalyst in microfluidic fuel cell (MFC) using electrospinning technique. The electrochemical measurement for CNx nanofibers as cathode catalyst in MFC is stud...
Yasuhiro Hayasaki, Takashi Hasumura, Takahiro Fukuda, Yutaka Nagaoka, Tomofumi Ukai, Seiki Iwai, Takashi Uchida, Takashi Uchida, Toru Maekawa, Toru Maekawa
Heliyon   2    Sep 2016
© 2016 The AuthorsMagnetic nanoparticles are of great importance particularly in the field of biomedicine as well as nanotechnology and nano materials science and technology. Here, we synthesise magnetic alloy-filling carbon nanoparticles (MA@C NP...
Sreejith Raveendran, Aswathy Ravindran Girija, Sivakumar Balasubramanian, Tomofumi Ukai, Yasuhiko Yoshida, Toru Maekawa, D. Sakthi Kumar
ACS Sustainable Chemistry and Engineering   2 1551-1558   Jul 2014
The nanocrystals, so-called quantum dots (QDs), are undisputedly excellent fluorescent markers for imaging and clinical diagnostics. However, their toxicity is always a perturbing issue and remains as the major hindrance for biocompatible imaging ...
Ravindran Girija Aswathy, Balasubramanian Sivakumar, Dhandayudhapani Brahatheeswaran, Sreejith Raveendran, Tomofumi Ukai, Takahiro Fukuda, Yasuhiko Yoshida, Toru Maekawa, Dasappan Nair Sakthikumar
Journal of Biomaterials and Nanobiotechnology   3(2A) 254-261   May 2012
Ravindran Girija Aswathy, Balasubramanian Sivakumar, Dhandayudhapani Brahatheeshwaran, Tomofumi Ukai, Yasuhiko Yoshida, Toru Maekawa, D. Sakthi Kumar
Materials Express   1 291-298   Dec 2011
CdTe/CdSe quantum dots (QDs) embedded gelatin nanoparticles were synthesized via aqueous method. The morphology of the nanoparticles was characterized by transmission electron microscope (TEM) and the average size of QD/gelatin nanoparticles was 5...
Tomofumi Ukai, Hisao Morimoto, Toru Maekawa
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   83    Jun 2011
We investigate the cluster-cluster aggregations of superparamagnetic particles in a rotational magnetic field numerically by the Brownian dynamics method, focusing on the cases of 01= 0.01 and 0.03 and Ma = 0, 0.001, 0.01, and 0.1, where is the ar...
Naohiro Takahashi, Atsushi Aki, Tomofumi Ukai, Yoshikata Nakajima, Toru Maekawa, Tatsuro Hanajiri
Sensors and Actuators, B: Chemical   151 410-415   Jan 2011
Zeta potential measurement is one of the simplest methods for analyzing the electrical surface properties of microparticles and biological cells in a solution. The authors propose a new methodology for simultaneous measurement of the number, size ...
Hisao Morimoto, Tomofumi Ukai, Yutaka Nagaoka, Nicole Grobert, Toru Maekawa
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   78    Aug 2008
We analyze the dynamics of paramagnetic particles on a paramagnetic substrate under a rotational magnetic field. When the paramagnetic particles are subjected to a rotational magnetic field, the rotational plane of which is perpendicular to the su...
Atsushi Aki, Yusuke Nihei, Hiroto Asai, Tomofumi Ukai, Hisao Morimoto, Yoshikata Nakajima, Tatsuro Hanajiri, Toru Maekawa
Sensors and Actuators, B: Chemical   131 285-289   Apr 2008
The electric characteristics at the surface of cells are changed depending on the surface conditions and reactions, and electrophoresis is one of the simplest methods of detecting the change in the electric characteristics of cells, and one which ...
Tomofumi Ukai, Toru Maekawa
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   69    Mar 2004
Patterns formed by paramagnetic particles in a horizontal layer, which are dispersed in a liquid solvent subjected to a dc magnetic field were analyzed. Based on the Langevin equation, the dynamics of paramagnetic particles were calculated by the ...
International Journal of Modern Physics,B   Vol.16, PP.2352-2357    2002

Misc

 
N. Takahashi, A. Aki, T. Ukai, Y. Nakajima, T. Maekawa, T. Hanajiri
2009 International Semiconductor Device Research Symposium, ISDRS '09      Dec 2009
Tomofumi Ukai, Toru Maekawa, Hisao Morimoto
International Journal of Modern Physics B   16 2352-2356   Jul 2002
We carry out Monte Carlo simulations of a ferromagnetic colloidal system, which is subjected to an external magnetic field, to investigate the structures formed by chain clusters. The control parameters are the ratio of the dipole moment energy to...

Conference Activities & Talks

 
Characterization of Biological Cell Viability by Electrophoretic Coulter Method
Y. Nakajima, T. Ukai, T. Mizuki, S. Mohamed and T. Hanajiri
The 12th IEEE international Conference on Nano/Molecular Medicine and Engineering   2 Dec 2018   
Structures Formed via Self-assembly in a Superparamagnetic Colloidal Suspension Subjected to an External Magnetic Field
Tomofumi Ukai, Yuto Hamada, T. Maekawa and H. Morimoto
13th International conference on surfaces, coatings and nanostructured materials   11 Sep 2018   
Electrophoretic Coulter method for identification of normal cells or dead cells
Y. Nakajima, T. Ukai, T. Mizuki and T. Hanajiri
5th European Conference on Microfluidics 2018   28 Feb 2018   
Detection and analysis of targeted biological cells by electrophoretic Coulter method
Y. Nakajima, T. Ukai, T. Mizuki and T. Hanajiri
9th International Conference on Materials for Advanced Technologies   18 Jun 2017   
Detection of antigen-antibody reactions by the measurement of the electrophoretic mobility of particles
Y. Yamamoto, T. Ukai, N. Hirosawa, Y. Sakamoto, H. Nakajima, S. Higuchi, T. Narisawa, T. Maeda, T. Takahashi and T. Maekawa
10th International Conference on Surfaces, Coatings and Nano-Structured Materials   2015   
The Improvement of Accuracy and Precision in Electrophoretic Coulter Method
T. Shimizu, T. Mizuki, T. Ukai, Y. Nakajima and T. Hanajiri
8th International Conference on Materials for Advanced Technologies of the Materials Research Society of Singapore & 16th IUMRS-International Conference in Asia Together with 4th Photonics Global Conference 2015   2015   
Fabrication of micrometer sized magnetic discs of circular and triangular shapes
Y. Nagaoka, A. Aoki, T. Ukai, H. Morimoto and T. Maekawa
9th International Conference on Surfaces, Coatings and Nanostructured Materials   2014   
Synthesis of magnetic microparticles in a crisscross microchannel using a photoresist
L. Yang, T. Ukai and T. Maekawa
International Soft Matter Conference 2013   2013   
Fabrication of circular and triangular magnetic discs
S. Aoki, Y. Nagaoka, T. Ukai, H. Morimoto and T. Maekawa
International Soft Matter Conference 2013   2013   
Surface modification of polydimethylsiloxane elastomer for microfluidic systems using a vacuum ultraviolet light
T. Ukai and T. Maekawa
International Soft Matter Conference 2013   2013   
Dynamics of magnetically controlled magnetic nano/micro objectes on the surface of a substrate
Y. Nagaoka, T. Ukai, M. Suzuki, R. Hironaga, H. Morimoto N. Grobert and T. Maekawa
7th International Conference on Surface, Coatings and Nanostructured Materials   2012   
Surface modification of polydimethylsiloxane for the development of biocompatible microfluidic devices irradiating a vacuum ultraviolet light
T. Ukai and T. Maekawa
7th International Conference on Surface, Coatings and Nanostructured Materials   2012   
Folate conjugated biocompatible fluorescent carboxymethyl cellulose nanoparticles
A.R. Girija, B. Sivakumar, B. Dhandayuthapani, T. Ukai, Y. Yoshida, T. Maekawa and D.S. Kumar
India-Japan Symposium on Challenges in Global Health and Environment   2011   
Manipulation of carbon nanotubes by dielectrophoresis
T. Ukai and T. Maekawa
The 15th International Symposium on Applied Electromagnetics and Mechanics   2011   
Cluster structures formed by paramagnetic particles subjected to a dc magnetic field
K. Hoshino, T. Ukai, T. Maekawa and H. Morimoto
The 15th International Symposium on Applied Electromagnetics and Mechanics   2011   
Dynamic of magnetic colloidal particles on a nonmagnetic substrate under a rotational magnetic field
R, Hironaga, Y. Nagaoka, T. Ukai, H Morimoto. and T. Maekawa
International Soft Matter Conference 2010   2010   
Aggregation of superparamagnetic particles in a rotational magnetic field
T. Ukai, H. Morimoto and T. Maekawa
International Soft Matter Conference 2010   2010   
N. Takahashi, A. Aki, T. Ukai, Y. Nakajima, T. Maekawa, T. Hanajiri
2009 International Semiconductor Device Research Symposium, ISDRS '09   1 Dec 2009   
Cluster-cluster Aggregation of Superparamagnetic Particles Subjected to a Rotational Magnetic Field
T. Ukai, K. Inoue, H. Morimoto and T. Maekawa
The 14th International Symposium on Applied Electromagnetics and Mechanics   2009   
Electrophoretic Coulter method for analyzing surface properties of particles using a micro-fluidic device
N. Takahashi, A. Aki, T. Ukai, Y. Nakajima
International Conference on Materials for Advanced Technologies   2009   
Structures and dynamics of clusters formed by magnetic colloidal particles under ac-dc combined magnetic fields
Y. Nagaoka, T. Ukai, H. Morimoto and T. Maekawa
The 11th International Conference on Electrorheological (ER) Fluid and Magnetorheological (MR) suspensions (ERMR 2008)   2008   
Cluster-cluster aggregation of superparamagnetic particles in a rotational magnetic field
T. Ukai and T. Maekawa
The 11th International Conference on Electrorheological (ER) Fluid and Magnetorheological (MR) suspensions (ERMR 2008)   2008   
Precise Manipulation of Magnetic Carbon Nanotubes by a Rotational Magnetic Field
T. Maekawa, H. Morimoto, A. Eto, Y. Nagaoka, T. Ukai and N. Grobert
2008 International Conference on Carbon, CARBON ’08   2008   
Detection of antigen-antibody reactions on individual cell’s surface using micro-channels
A. Aki, Y. Nihei, T. Ukai, H. Morimoto and T. Maekawa
The 13th International Symposium on Applied Electromagnetics and Mechanics (ISEM)   2007   
How can you put one DNA molecule to a nano-gap between electrodes?
T. Higashi, Y. Nakajima, Y. Yamazaki, T. Ukai, T. Hanajiri, A. Inoue, T. Maekawa and T. Sugano
ICMAT2007-International Conference on Materials for Advanced Technologies 2007   2007   
Cluster-Cluster Aggregations of Superparamagnetic Particles in a Rotational Magnetic field
T. Ukai and T. Maekawa
The 10th International Conference on Electrorheological (ER) Fluid and Magnetorheological (MR) suspensions (ERMR 2006)   2006   
Structures and Dynamics of Clusters Composed of Paramagnetic Particles Subjected to Both AC and DC Magnetic Field
Y. Nagaoka, H. Morimoto, T. Ukai and T. Maekawa
The 10th International Conference on Electrorheological (ER) Fluid and Magnetorheological (MR) suspensions (ERMR 2006)   2006   
Measurement of Zeta Potential of Living Cells for the Investigation of Their Electrorheological Caracteristics
A. Aki, H. Asai, Y. Nihei, T. Ukai and T. Maekawa
The 10th International Conference on Electrorheological (ER) Fluid and Magnetorheological (MR) suspensions (ERMR 2006)   2006   
Measurement of zeta potential of living cells
A. Aki, T. Ukai, N. Kato and T. Maekawa
International Symposium on Interdisciplinary Electromagnetic, Mechanic & Biomedical Problems (ISEM 2005)   2005   
Patterns formed by paramagnetic particles in a dc magnetic field
T. Ukai and T. Maekawa
The Ninth International Conference on Electrorheological Fluids and Magneto-rheological Suspensions   2004   
Patterns Formed in a Magnetorheological Fluid Subjected to a Uniform dc Magnetic Field
T. Ukai and T. Maekawa
The 3rd International Conference on Slow Dynamics in Complex Systems   2003   
Brownian Dynamics Analysis of Cluster Patterns Created by Paramagnetic Particles in a dc Magnetic Field
T. Ukai and T. Maekawa
The 8th Joint European Thermodynamics Conference   2003   
Secondary Structures Created by Chain Clusters of Paramagnetic Particles in a dc Magnetic Field
T. Ukai and T. Maekawa
The 6th ASME-JSME Thermal Engineering Conference   2003   
Secondary Structures Created by Paramagnetic Chain Clusters
T. Ukai and T. Maekawa
The 5th International Conference on Fundamental and Applied MHD   2002   
Pattern Formations in Ferromagnetic and Paramagnetic Colloidal Systems Subjected to External dc Magnetic Fields
T. Ukai, T. Maekawa and H. Morimoto
The First International Symposium on Advanced Fluid Information   2001   
Equilibrium and Dynamic Analysis of Magnetic Characteristics of a Triangular Ferromagnetic Lattice System
T. Ukai and T. Maekawa
The 8th International Symposium on Electrorheological Fluids and Magnetotheological Suspensions   2001   
Equilibrium Patterns of Chain Clusters Composed of Ferromagnetic Particles in an External Magnetic Field
T. Ukai, H. Morimoto and T. Maekawa
The 8th International Conference on Electrorheological Fluids and Magnetotheological Suspensions   2001   
Self-Organization in Triangular and Square Ferromagnetic Lattice Systems
Proceedings of The 10th International Symposium on Applied Electromagnetics and Mechanics   2001   
Self-Organisation in Triangular and Square Ferromagnetic Lattice Systems
T. Ukai, T. Maekawa and H. Morimoto
The 10th International Symposium on Applied Electromagnetics and Mechanics   2001   
Magnetic Self-Organisation in a Triangular Ferromagnetic Lattice System
T, Ukai, H. Morimoto and T. Maekawa
The 4th International PAMIR Conference on Magnetohydrodynamic at Dawn of 3rd Millennium   2000   
Brownian dynamics analysis of magnetic order-disorder transition in a ferromagnetic colloidal system
T. Ukai, H. Morimoto and T. Maekawa
The 7th International Conference on Electro-rheological (ER) Fluids and Magneto-rheological Suspensions   1999   

Research Grants & Projects

 
Magnetic characteristics and structures of magnetic colloidal systems