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JSME 2025 年次大会
JSME 2025 年次大会

日本機械学会2025年度年次大会@北海道大学で学会発表しました.主な研究発表は以下の通りです.

  • "ナノ隙間における光硬化性液体の濡れ現象に対するUVオゾン洗浄の影響", 山本寛太, 伊藤伸太郎, 福澤健二, 中川勝, 鈴木涼平, 関淳一, 東直輝, 張賀東

  • "ナノ流路内での電気泳動速度差を利用した巨大DNA分子の緩和時間計測", ⽯睿, 伊藤伸太郎, 福澤健二, 東直輝, 張賀東

  • "ナノすきまに閉じ込められた紫外線硬化性液体のせん断抵抗力増加メカニズムの添加剤吸着に着目した解明", 川合敬脩, 福澤健二, Song Yuxi, 伊藤伸太郎, 東直輝, 張賀東, 中川勝, 鈴木涼平, 関淳一

We presented research at the Japan Society of Mechanical Engineers Annual Conference 2025 @ Hokkaido University. The main research presentations are as follows.

  • “Effect of UV Ozone Cleaning on Wetting Phenomena of Photocurable Liquids in Nano-Gaps”, Kanta Yamamoto, Shintaro Itoh, Kenji Fukuzawa, Masaru Nakagawa, Ryohei Suzuki, Junichi Seki, Naoki Azuma, Hedong Zhang

  • “Relaxation Time Measurement of Giant DNA Molecules Using Electrophoretic Velocity Differences in Nanochannels,” Rui Shi, Shintaro Itoh, Kenji Fukuzawa, Naoki Azuma, Hedong Zhang

  • “Elucidation of the Mechanism for Increased Shear Resistance of UV-Curable Liquids Confined in Nanogaps Focusing on Additive Adsorption,” Keisyu Kawai, Kenji Fukuzawa, Yuxi Song, Shintaro Itoh, Naoki Azuma, Hedong Zhang, Masaru Nakagawa, Ryohei Suzuki, Junichi Seki

札幌といえばやはりジンギスカンですかね
札幌といえばやはりジンギスカンですかね

Lab on a Chip, 2025 in press
Lab on a Chip, 2025 in press

・ナノスリット流路による巨大DNAのサイズ分析法を開発し、既存技術よりも高分離能 ・短時間でサイズ分析を実現。

・DNAの緩和時間(伸長状態からコイル状へ戻るまでの時間)を計測することで、サイズを正確に判別。

・デバイスは簡便なフォトリソグラフィで製造可能、わずか200分子で解析可能なため、量産・実用化に向けた展開が期待。

・新手法により、高精度かつ網羅的な疫学解析が可能、薬剤耐性菌対策への貢献が期待。


雑誌名:Lab on a Chip

論文タイトル:Size analysis of large DNA molecules by relaxation time measurement using a nanoslit channel

著者:Hongdong Yi, Shintaro Itoh, Kenji Fukuzawa, Hedong Zhang, Naoki Azuma

DOI: 10.1039/D4LC00998C

  • A method for analyzing the size of giant DNA using nano-slit flow channels has been developed, enabling higher separation efficiency than existing technologies and size analysis in a short time.

  • The size can be accurately determined by measuring the relaxation time (the time it takes for the DNA to return from an extended state to a coiled state).

  • The device can be manufactured using simple photolithography and can analyze as few as 200 molecules, so it is expected to be developed for mass production and practical application.

  • The new method enables high-precision and comprehensive epidemiological analysis, contributing to strategies against drug-resistant bacteria.


Journal: Lab on a Chip

Title: Size analysis of large DNA molecules by relaxation time measurement using a nanoslit channel

Authors: Hongdong Yi, Shintaro Itoh, Kenji Fukuzawa, Hedong Zhang, Naoki Azuma

DOI: 10.1039/D4LC00998C


ROBOMECH2024
ROBOMECH2024

ROBOMECH2024で発表した以下の研究発表が分野融合研究優秀表彰を受賞しました.発表者の長野圭造君(M2)は日本機械学会 若手優秀講演フェロー賞を同時に受賞しました.おめでとう!

  • "ポリマーブラシ膜のパターニングを⽤いた界⾯制御によるマイクロ電気泳動チップの開発", 長野圭造,伊藤伸太郎,福澤健二,東直輝,張賀東


ree

The following research presentation made at ROBOMECH2024 has been awarded the Outstanding Interdisciplinary Research Award. The presenter, Keizo Nagano (M2), also received the Japan Society of Mechanical Engineers Young Excellent Speaker Award. Congratulations!

  • “Development of a microelectrophoresis chip using interface control by patterning polymer brush films,” Keizo Nagano, Shintaro Ito, Kenji Fukuzawa, Naoki Azuma, and Hedong Zhang

Furo-cho, Chikusa, Nagoya Aichi, Japan

EI Building, Higashiyama Campus, Nagoya University

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