Category: Research

エアロゾル学会・高橋幹二賞 TAKAHASHI AWARD (Japan Association of Aerosol Sci. & Tech.) “Deposition of submicron aerosol particles by a closed-loop flow system” 閉ループ式エアロゾル流によるサブミクロン粒子の沈着

本論文で示された知見により、沈着効率が悪い従来法に代わって本手法を気液界面細胞曝露に応用できれば有用である。The method presented here may potentially be applied for the deposition and analysis of submicron particles on various types of substrate (i.e. air-liquid interface) without the need for vacuum imaging analysis (e.g. electron microscopy).

親水性表面への数μmのエアロゾル液滴の沈着 Micrometer-sized aerosols/ droplets on a hydrophilic surface

大気に浮遊する微粒子の沈着の場所について考えてみた。実験の結果より、”Wet”微粒子は「親水性の高い」場所に多く沈着する。”Dry”微粒子”は「親水性の低い」場所に多く沈着する。We have considered the location of the deposition of particles suspended in the air. From the results of the experiment: “More hydrophilic” area trapped more “wet” particles. The “less hydrophilic” area trapped more “dry” particles.

著書 Nanoparticles Carrying Biological Molecules (Book Chapter)

The conjugation of nanoparticles and biomolecules has found applications in bioimaging, biocatalysis, drug delivery, and biosensors. ナノ粒子と生体分子の「共役」は、バイオイメージング、生体触媒、薬物送達、バイオセンサーなどの分野で応用が見出されている。

マスク装着に関して（エアロゾル学会）Mask-wearing

Point-1.「繊維の隙間より小さい粒子はマスクのフィルターを通過する」は間違い “Particles smaller than the fiber gap pass through the filter of the mask” is not accurate

Point-2. 大事なことはマスクのフィルター性能より,マスクの縁と顔表面との隙間からの漏れ（侵入）を少しでもなくすこと。It is important to eliminate the leakage (intrusion) from the gap between the mask edge and the face surface, rather than the filter performance of the mask.

開発の事例：微粒子の合成と構造化 Example of Technology: Synthesis & Structuring of Particles (2018-2019)

浮遊する微粒子の構造化と集積化について、従来まで考証されていなかった物質の輸送に対する「駆動力のバランス」の視点からの技術手法を開発した。We have developed methods for synthesis & structuring suspended particles from the viewpoint of “balance of the driving force on the transport of matter”, which has not been considered before.

A workshop: Australia (Monash Univ.) and Japan (TUAT)

TUAT welcomes a group from Monash Univeristy (led by Professor Aibing Yu, Vice Chancellor’s Professorial Fellow, Pro Vice-Chancellor and President – Suzhou) Speakers: “Modelling of reacting flows and industry applications: some examples”　Yansong Shen (University of New South Wales) “Modelling and Simulation of Packing and Flow of Ellipsoidal Particles”, Zongyan Zhou (Monash University) “DEM-based models for flow,…

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科学者・技術者を目指す高校生が対象 GIYSE Program for high-school student (JST/TUAT)

Our lab is joining a new program for high-school student (sponsored by the Japanese government/JST) 東京農工大学では、将来グローバルに活躍する科学者、技術者を目指す高校生を対象に、大学の研究、教育内容を先取りして経験できるプログラムを用意しました。それが「GIYSEプログラム」です。Global Innovation program for Young Scientists and Engineers /~giyse/ K. Sano (2nd grade student, Tokyo Metropolitan Tachikawa High School 東京都立立川高等学校) is joining GIYSE program (2018-2019). His topic is about collection of air poluttant (PM2.5). He is also being supported by…

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教員あたりの学術論文数が国内2位（農工大）TUAT: Japan’s second “most-productive” university in terms of “Number of papers per academic-staff”.

Tokyo University of Agriculture and Technology (TUAT) is a university with many “high-research-producers”. The university has about 400 academic-staffs. Japan’s second “most-productive” university in terms of “Number of papers per academic-staff” UK-based QS announced the QS Asian University ranking 2018 (Oct. 2017), and TUAT ranked as the top 1% of universities in Asia. In particular,…

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40℃の表面に気中微粒子を沈着させた流体制御 Can aerosol particles move/deposit, from 25 to 40 ℃ surface?

閉鎖空間における沈着を考慮したエアロゾルフローシステムを構築した。沈着効率が悪い従来法に代わって本手法を気液界面細胞曝露に応用できれば有用である。An aerosol flow system has been constructed to mimic the delivery of particles to the air-liquid interface. Potentially be applied for the deposition and analysis of submicron particles on various types of substrate without the need for vacuum imaging analysis..

液中粒子の電荷とそれらのエアロゾル化時の荷電との関係（世界初）Between charges of colloids and the corresponded aerosols.

Interaction between surface charge (zeta potential) of colloidal nanoparticles and the charge induced droplets suspended in the gas phase by electrospray is investigated for the first time. 液相中のナノ粒子の表面電荷（ゼータ電位）と気相中操作（静電噴霧）により懸濁液滴の荷電（電荷）の間の相互作用について初めての研究。

日本地球惑星科学連合会 Invited talk “水性媒体中での電気泳動法による100 nm以下の多孔質構造体へのコロイドの輸送と固定化” Japan Geoscience Union:

By a recommendation of Prof. Hirotaka Saito (Soil Physics, Institute of Agriculture, TUAT) Wuled Lenggoro was invited for a talk in JpGU (Japan Geoscience Union 日本地球惑星科学連合会) Meeting 2018 “Transport and immobilization of colloids into sub-100 nm porous structures by electrophoretic methods in aqueous media” (水性媒体中での電気泳動法による100 nm以下の多孔質構造体へのコロイドの輸送と固定化) This study was performed by TUAT students: K. Kusdianto (Dr. Eng.,…

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同一ロウソクから親水性と疎水性の両方の粒子層が製造可能 From a single candle: we can make both hydrophilic & hydrophobic layers.

Using “soot” from a candle burning, we developed assembly routes to form hydrophilic or hydrophobic layers of carbonaceous nanoparticles. ロウソク燃焼の「煤」を用いて、親水性または疎水性を有するナノ粒子膜の作製する方法を開発。5000年前に中国で開発された、従来の「墨」技術と同じかどうか？