氏名

タナカ ダイキ

田中 大器

職名

次席研究員(研究院講師) (https://researchmap.jp/7000017536/)

所属

(ナノ・ライフ創新研究機構)

学歴・学位

学位

博士

論文

Synthesis of an azo-Mn(II) complex with mild pH control using a microfluidic device

Daiki Tanaka

RSC Advances査読有り(7)p.39576 - 395822017年07月-2017年07月 

DOI

Microfluidic synthesis of chiral salen Mn(ii) and Co(ii) complexes containing lysozyme

Tanaka, Daiki; Kawakubo, Wataru; Tsuda, Erika; Mitsumoto, Yuya; Yoon, Dong Hyun; Sekiguchi, Tetsushi; Akitsu, Takashiro; Shoji, Shuichi

RSC Advances6(85)p.81862 - 818682016年01月-2016年01月 

DOIScopus

詳細

概要:© 2016 The Royal Society of Chemistry.Efficient microfluidic synthesis of chiral salen Mn(ii) and Co(ii) complexes containing lysozyme was achieved. The reaction conditions for the delicate protein were controlled precisely with a separation barrier in the microfluidic device. The microfluidic method has the following advantages over the conventional method: a remarkable reduction in the reaction time from 4.5 h to less than 1 s for the synthesis of Mn(ii) and Co(ii) complexes, a reduction in the reaction temperature from 40 to 23 °C, and no need for an N2 atmosphere because all the reagents are isolated from the air. A three-fold yield improvement was achieved for Mn(ii) and Co(ii) complexes containing lysozyme compared with conventional synthesis.

Analysis of vinylidene fluoride–trifluoroethylene copolymer film for nonpolarized energy harvester

Kamata Yuki;Sekiguchi Tetsushi;Nakajima Takashi;Sasaki Toshio;Dong-Hyun Yoon;Tanaka Daiki;Shoji Shuichi

Jpn. J. Appl. Phys.56(7)2017年06月-2017年06月 

CiNii

詳細

ISSN:0021-4922

概要:In this paper, an investigation of a vinylidene fluoride–trifluoroethylene (VDF/TrFE) copolymer film for use in a nonpolarized energy harvester is presented. The Fourier transform infrared spectroscopy and X-ray diffraction analysis of a nonpolarized VDF/TrFE copolymer film indicate that polymer crystallinity depends on film thickness. Furthermore, the growth of the polar structure (β phase) is observed upon the reduction in the thickness. However, power generation does not exhibit a linear behavior because the generation capacity increases with the thickness. These results indicate that the film thickness for a nonpolarized harvester must be optimized to obtain the maximum output.

Microfluidic Stamping on Sheath Flow

Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi

Small2016年01月-2016年01月 

DOIScopus

詳細

ISSN:16136810

All-round micro sheath flow formation to realize complex cross sections by simply stacked PDMs structures

Yoon, Dong Hyun; Ariyoshi, Lisa; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi

Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)2016-Februaryp.141 - 1442016年02月-2016年02月 

DOIScopus

詳細

ISSN:10846999

概要:© 2016 IEEE.This research proposed a sheath flow formation method for complex 3D structure such as multi-core and multi-sheath using multi-stacked PDMS units. Cross sectional shape of the flow and the number of sheath layer were defined simply by combination of different PDMS units. The stacked PDMS units allowed independent fluid injection of different layers and the short sheath area realized low diffusion between each layer. Furthermore, the proposed 3D device fabrication method requires only one point alignment. The sheath flow formation method is useful for wide applications which require fiber materials of specific cross sectional shapes and layers.

3D Structures: Microfluidic Stamping on Sheath Flow (Small 24/2016)

Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi

Small2016年06月-2016年06月 

PubMedDOIScopus

詳細

ISSN:16136810

Microfluidic Stamping on Sheath Flow

Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi

Smallp.3224 - 32282016年06月-2016年06月 

PubMedDOIScopus

詳細

ISSN:16136810

Fabrication process of fluidic devices for producing fine droplets using a focused ion beam system

Nozaki, Y.; Kanai, T.; Matsuo, A.; Tanaka, D.; Yuito, I.; Takeuchi, T.; Sekiguchi, T.; Shoji, S.

16th International Conference on Nanotechnology - IEEE NANO 2016p.795 - 7982016年11月-2016年11月 

DOIScopus

詳細

概要:© 2016 IEEE.We conducted an experiment on the fabrication of fluidic devices for producing fine droplets. In our proposed method, multiple channels were fabricated by using a focused ion beam (FIB) system. The minimum feature top width was found to be approximately 56 nm. When both the target width and depth of one channel were set to 500 nm, the resultant top width was 750-780 nm, the bottom width was 250-320 nm, and the depth was 560 nm, almost achieving the target size for the channel depth.

Simple microfluidic formation of highly heterogeneous microfibers using a combination of sheath units

Yoon, D. H.; Kobayashi, K.; Tanaka, D.; Sekiguchi, T.; Shoji, S.

Lab on a Chip - Miniaturisation for Chemistry and Biology17(8)p.1481 - 14862017年01月-2017年01月 

DOIScopus

詳細

ISSN:14730197

概要:© The Royal Society of Chemistry.This paper presents the formation of complex cross-sectional microfibers using three-dimensional microfluidic devices. The compartments and shapes of core and shell layers in the microfibers were independently controlled via three-dimensional fluidic channels fabricated by the combination of sheath units. The number of layers is easily expanded by the stacking of these units. Therefore, the highly heterogeneous microfibers of alginate hydrogel are obtained in polydimethylsiloxane structures. This widely expandable method has great potential for the development of functional and complex fiber-shaped materials.

Analysis of vinylidene fluoride-trifluoroethylene copolymer film for nonpolarized energy harvester

Kamata, Yuki; Sekiguchi, Tetsushi; Nakajima, Takashi; Sasaki, Toshio; Dong-Hyun, Yoon; Tanaka, Daiki; Shoji, Shuichi

Japanese Journal of Applied Physics56(7)2017年07月-2017年07月 

DOIScopus

詳細

ISSN:00214922

概要:© 2017 The Japan Society of Applied Physics. In this paper, an investigation of a vinylidene fluoride-trifluoroethylene (VDF/TrFE) copolymer film for use in a nonpolarized energy harvester is presented. The Fourier transform infrared spectroscopy and X-ray diffraction analysis of a nonpolarized VDF/TrFE copolymer film indicate that polymer crystallinity depends on film thickness. Furthermore, the growth of the polar structure (β phase) is observed upon the reduction in the thickness. However, power generation does not exhibit a linear behavior because the generation capacity increases with the thickness. These results indicate that the film thickness for a nonpolarized harvester must be optimized to obtain the maximum output.

Mechanical Reinforcement of Low-Concentration Alginate Fibers by Microfluidic Embedding of Multiple Cores

Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi

Macromolecular Materials and Engineering2018年01月-2018年01月 

DOIScopus

詳細

ISSN:14387492

概要:© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This paper presents mechanically reinforced low-concentration alginate fibers by embedding inner cores of high-concentration alginate. 3D structures by stacking multiple polydimethylsiloxane (PDMS) layers allow the microfluidic formation and control of the isolated cores in the continuous flow. The alginate hydrogel fibers are simply spun, and the compartments, central core, surrounding cores, and outer shell layer are successfully verified. The results demonstrate the great potential for the development of complex fibrous materials, particularly for biological applications, which require specific morphology and composition of the fibers.

講演・口頭発表等

CRYSTALLIZATION OF ZINC(II) COMPLEX CONTAINING LYSOZYME BY SUPER WATER REPELLENT DOUBLY REENTRANT STRUCTURE PILLAR ARRAY DEVICE

Daiki Tanaka

THE 3RD CONFERENCE ON MICROFLUIDIC HANDLING SYSTEMS2017年10月04日

詳細

国際会議口頭発表(一般)

ETREMELY EFFICIENT AND NON-HAZARDOUS BROMO GROUP ADDITION REACTION USING SIMPLE MICROFLUDIC DEVICES

Wataru Kawakubo

THE 3RD CONFERENCE ON MICROFLUIDIC HANDLING SYSTEMS2017年10月04日

詳細

国際会議ポスター発表

Growth heterogeneity in pure cultures of nitrifiers

Rino Isshiki

Fifth International Conference on Nitrification and Related Processes2017年07月23日

詳細

国際会議ポスター発表

Fabrication Process of Fluidic Devices for Producing Fine Droplets Using a Focused Ion Beam System

Yoshito Nazaki

Proceedings of the 16th International Conference on Nanotechnology2016年08月22日

詳細

国際会議口頭発表(一般)

ALL-ROUND MICRO SHEATH FLOW FORMATION TO REALIZE COMPLEX CROSS SECTIONS BY SIMPLY STACKED PDMS STACKED PDMS STRUCTURES

Dong Hyun Yoon

MEMS 20162016年01月24日

詳細

国際会議ポスター発表

HIGH EFFICIENT SYNTHESIS OF MANGANESE(II), COBALT(II) COMPLEXES CONTAINING LYSOZYME USING REACTION AREA SEPARATED MICRO FLUIDIC DEVICE

Daiki Tanaka

Transducers 20152015年06月21日

詳細

国際会議口頭発表(一般)

HIGH YIELD MICRO FLUIDIC SYNTHESIS OF METAL COMPLEX CONTAINING PROTEINS

Daiki Tanaka

The 6th International Symposium on Microchemistry and Microsystems2014年07月30日

詳細

国際会議口頭発表(一般)

超撥水製二重凹型ピラーアレイデバイスによるZn(II)錯体含有リゾチームの結晶化

田中 大器

「センサ・マイクロマシンと応用システム」シンポジウム2017年10月31日

詳細

国内会議ポスター発表

マイクロ流体デバイスによる高効率かつ安全なブロモ基付加操作

川久保 渉

「センサ・マイクロマシンと応用システム」シンポジウム2017年10月31日

詳細

国内会議ポスター発表