タナカ ダイキ
次席研究員(研究院講師) (https://researchmap.jp/7000017536/)
(ナノ・ライフ創新研究機構)
博士
Daiki Tanaka
RSC Advances査読有り(7)p.39576 - 395822017年07月-2017年07月
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
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.
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
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.
Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi
Small2016年01月-2016年01月
ISSN:16136810
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
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.
Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi
Small2016年06月-2016年06月
ISSN:16136810
Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi
Smallp.3224 - 32282016年06月-2016年06月
ISSN:16136810
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
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.
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
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.
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
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.
Yoon, Dong Hyun; Tanaka, Daiki; Sekiguchi, Tetsushi; Shoji, Shuichi
Macromolecular Materials and Engineering2018年01月-2018年01月
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.
Daiki Tanaka
THE 3RD CONFERENCE ON MICROFLUIDIC HANDLING SYSTEMS2017年10月04日
国際会議口頭発表(一般)
Wataru Kawakubo
THE 3RD CONFERENCE ON MICROFLUIDIC HANDLING SYSTEMS2017年10月04日
国際会議ポスター発表
Rino Isshiki
Fifth International Conference on Nitrification and Related Processes2017年07月23日
国際会議ポスター発表
Yoshito Nazaki
Proceedings of the 16th International Conference on Nanotechnology2016年08月22日
国際会議口頭発表(一般)
Dong Hyun Yoon
MEMS 20162016年01月24日
国際会議ポスター発表
Daiki Tanaka
Transducers 20152015年06月21日
国際会議口頭発表(一般)
Daiki Tanaka
The 6th International Symposium on Microchemistry and Microsystems2014年07月30日
国際会議口頭発表(一般)
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
国内会議ポスター発表
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
国内会議ポスター発表
科目名 | 開講学部・研究科 | 開講年度 | 学期 |
---|---|---|---|
MEMS | 基幹理工学部 | 2021 | 春学期 |
MEMS | 大学院基幹理工学研究科 | 2021 | 春学期 |
MEMS | 大学院先進理工学研究科 | 2021 | 春学期 |