eng_研究テーマのバックアップ(No.4) - Yagyu Laboratory Kanto Gakuin Univ.

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- 1 (2015-03-14 (土) 01:58:26)
- 2 (2015-03-14 (土) 02:43:29)
- 3 (2015-03-18 (水) 04:01:38)
- 4 (2017-05-05 (金) 13:34:41)
- 5 (2017-05-31 (水) 01:36:39)
- 6 (2019-02-12 (火) 02:03:55)
- 7 (2019-02-12 (火) 17:38:12)
- 8 (2022-05-08 (日) 00:54:47)
- 9 (2023-02-01 (水) 00:31:14)

Research projects †

DNA nanostructure
　The double stranded DNA model was created for production of DNA nanostructure applied DNA origami technology. The model with electrostatic interaction was discussed. We confirmed that the dependency of the salt concentration on the persistence length of the nCG-dsDNA model at the 30% charge is in good agreement with the Poisson–Boltzmann theoretical model.

Laser microfabrication process
　Laser microfabrication of goid nanoparticles dispersed polymer film is prposed. Since wave length of laser beam is selected an absorption wavelength by plasmon resonance vibration of gold nanoparticles, the polymer film can be micromachined. In this study, we focus the effect of size and distribution of naoparticle on laser processed shape.

[1] H. Yagyu, O. Tabata: Applied Surface Science, Vol.255 No. 5 Part 1, p.2237-2243 (2008).
[2] T. Kikitsu, Y. Yagoto, M. Ogawa, H. Yagyu: The 18th International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers2015), Anchorage (June, 2015), accepted.
[3] H. Yagyu, T. Kikitsu: Journal of Micromechanics and Microengineering, Vol. 25　No. 12, 125018(7pp) (2015).

Microfluidic device
　A glass microfluidic device with mcirochannel is fabricated by micropowder blasting, and the prepareation of metalic nanoparticles on the produced device is prposed. In this study, we focus the production of device which can synthesize nanoparticles by liquid-phase reduction method.

[1] 濱村心, 森塚大樹, 柳生裕聖: 日本機械学会第6回マイクロ･ナノ工学シンポジウム講演論文集, 松江（2014年10月）, 20pm3-PM021.
[2] Yu Tanabe, Hiromasa Yagyu: Proceedings of SPIE Vol. 10061, 1006119 (2017).
[3] Yu Tanabe, Keisuke Yamauchi, Mao Hamamoto, Hiromasa Yagyu: International Symposium on Micro-Nano Science and Technology 2016, Tokyo (Dec. 16-18, 2016), p.124.
[4] Hiromasa Yagyu, Yu Tanabe, Satoru Takano, Mao Hamamoto: Micro & Nano Letters (The Institution of Engineering and Technology) , accepted.
[5] Mao Hamamoto, Hiromasa Yagyu: the 17th IEEE International Conference on Nanotechnology (IEEE NANO 2017), Pittsburgh (July, 2017), accepted.

Simulation

Simulation of polymer resist for MEMS
　The mechanical property of the polymer resist is required for development of MEMS microfluidic device. We predict the relationship between the mechanical property and the structure of resist in molecular scale by coarse grained molecular dynamics simulation.



[1] H. Yagyu, Y. Hirai, A. Uesugi, Y. Makino, K. Sugano, T. Tsuchiya, O. Tabata: Polymer, Vol.53, p.4834-4842 (2012).
[2] 平井義和, 柳生裕聖, 牧野圭秀, 上杉晃生, 菅野公二, 土屋智由, 田畑修: 電気学会論文誌E（センサ･マイクロマシン部門誌）, Vol.133 No.9, p.320-329 (2013).

Simulation of rubber materials
　A polymer chain is treated as a simple beads-spring model, and the viscoelastic and elongation behavier of the model is simulated using molecular dynamics calculation software such as OCTA/COGNAC and LAMMPS with supercomputer according to the model scale.



[1] H. Yagyu, T. Utsumi: Computational Materials Science, Vol.46 Issue 2, p.286-292 (2009).
[2] 柳生裕聖: 日本機械学会論文集（計算力学）, Vol.80 No.810, p.CM0032 (2014).
[3] H. Yagyu: Soft Materials, Vol.13 Issue 4, p.263-270 (2015).

Simulation of micropowder btasting
　We predict processed shape on a glass substrate by powder btasting using cellular automaton method. The simulator is improved by comparison of experimental result and simulated result, in addition of the production of processing system.



[1] H. Yagyu, O. Tabata: Journal of Micromechanics and Microengineering, Vol.18 No. 5, 055010(9pp) (2009).
[2] H. Yagyu, O. Tabata: Transaction on Electrical and Electronic Engineering, Vol.2 No. 3, p.348-356 (2007).