PAPER: Spraying water-soluble particles to komatsuna leaves. 小松菜に水溶性微粒子を散布したら・・

Short Introductions of /our papers/


Free-access (until Dec. 1, 2017): elsevier.com

Komatsuna plants were grown and exposed to ammonium sulfate (((NH4)2SO4), AS) submicron particles for 16 days (22.5 µg m−3 per day) in phytotrons.

The amount of particles deposited on the leaf  decreased over time, because AS particles deposited on the leaf deliquesced, allowing ions such as SO42− in the solution to be absorbed into the leaf. 葉表面に堆積した粒子の量は時間とともに減少した。サブミクロン硫酸アンモニウム(AS)粒子が葉表面に堆積し、脱離溶液中のSO42−などのイオンが葉に吸収される可能性が高い。

Continue reading “PAPER: Spraying water-soluble particles to komatsuna leaves. 小松菜に水溶性微粒子を散布したら・・”

PAPER: Leaf waxes to prevent “incoming” particles. 大気中微粒子の付着を防止する葉の仕組み

Other “intro” of papers from our lab >> /tag/paper/


Journal of Plant Research (13 June 2016) DOI 10.1007/s10265-016-0839-7
plants-Fuchucampus“Effect of epicuticular wax crystals on the localization of artificially deposited sub-micron carbon-based aerosols on needles of Cryptomeria japonica (Sugi)”

電界放出型走査電子顕微鏡(FE-SEM)によるスギ(代表的な針葉樹種)の葉表面に人工的に散布されたサブミクロンサイズの炭素系粒子の局在を調べました。気孔の機能を保持するために、密に分布されたエピクチクラワックス結晶は、気中からの微粒子の付着を防止する役割があるかもしれません。from-nakaba-2016-JPlantRes

Elucidation of the mechanism of adsorption of particles suspended in the gas-phase (aerosol) to the outer surfaces of leaves provides useful information for understanding the mechanisms of the effect of aerosol particles on the growth and physiological functions of trees. We examined the localization of artificially deposited sub-micron-sized carbon-based particles on the surfaces of needles of Cryptomeria japonica, a typical Japanese coniferous tree species, by field-emission scanning electron microscopy (FE-SEM).  Our results suggest that epicuticular wax crystals affect distribution of particles on needles. Therefore, densely distributed epicuticular wax crystals might prevent the deposition of sub-micron particles on the surfaces of needles to retain the function of stomata.


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Continue reading “PAPER: Leaf waxes to prevent “incoming” particles. 大気中微粒子の付着を防止する葉の仕組み”

PAPER: Between Charged Aerosol Particles & Substrate’s Hydrophilicity. 正帯電した気中浮遊粒子が親水性が高い表面に付きやすい(新現象の発見)

Area-selective deposition of charged particles derived from colloidal aerosol droplets on a surface with different hydrophilic levels…J. Aerosol Science. (a work by Kusdianto (Doctoral student, now with ITS, Indonesia), Gen (Doctoral student, now with City Univ Hong Kong), and Lenggoro. Highlights * Charged aerosol particles were derived from spraying colloidal droplets. * Substrate with different ‘levels’ of hydrophilicity was used. * Positively charged aerosol particles … Continue reading PAPER: Between Charged Aerosol Particles & Substrate’s Hydrophilicity. 正帯電した気中浮遊粒子が親水性が高い表面に付きやすい(新現象の発見)

PAPER: Deposition of gas-phase particles on both sides. 薄板の裏側まで微粒子が沈着

Simultaneous deposition of submicron aerosols onto both surfaces of a plate substrate by electrostatic forces M. Gen, S. Ikawa, S. Sagawa, I. W. Lenggoro e-Journal of Surface Science and Nanotechnology, 2014. http://dx.doi.org/10.1380/ejssnt.2014.238 Open access. サブミクロンの帯電粒子を気中に浮遊させて、目的の平板の両面に粒子群が沈着しているメカニズムを説明した。 【展開】植物の葉に沈着する微粒子の挙動(農薬等の散布法)の理解 【展開】自動車等の静電塗装の分野 Continue reading PAPER: Deposition of gas-phase particles on both sides. 薄板の裏側まで微粒子が沈着

Masao Gen: Doctoral presentation (5/23), 博士論文公聴会

Immobilization of submicron- and nano-particles from gas phase onto solid surfaces by external forces (外力を用いたサブミクロン粒子とナノ粒子の気相から固体基板への固定化)(Thesis is written in English) 2014/5/23 Friday, 15:00 ~ 16:30, BASE1階会議室 発表者: 玄 大雄 (GEN, Masao) ** ** After working with WPI-AIMR, Tohoku University as Assistant Professor, he joined City University of Hong Kong Keywords: Deposition/assembly of particles, Particle exposure system for plant growth chamber, Detector for residue pesticide 微粒子の表面沈着、植物用粒子曝露装置、残留農薬検出用のセンサ =========================== GEN, … Continue reading Masao Gen: Doctoral presentation (5/23), 博士論文公聴会

PAPER: with a project funded by MEXT Kakenhi (2011-2014)科研費の成果

科研費の結果に関するサイトです。 (研究課題番号:23560904) PROJECT TITLE: Multi-dimensional assembly and assessment of high-crystalline fine particles via charged aerosol route. 帯電エアロゾルを用いた高結晶性微粒子の多次元集積と評価 ARTICLE Simultaneous deposition of submicron aerosols onto both surfaces of a plate substrate by electrostatic forces M. Gen, S. Ikawa, S. Sagawa, I. W. Lenggoro e-Journal of Surface Science and Nanotechnology, 2014. http://dx.doi.org/10.1380/ejssnt.2014.238 ARTICLE Area-selective deposition of charged particles derived from colloidal aerosol droplets on a surface with different … Continue reading PAPER: with a project funded by MEXT Kakenhi (2011-2014)科研費の成果

3 students presented at 2 conferences, 学生の学会発表

2014.March, Gifu 化学工学会年会 Annual Conference of Society of Chemical Engineers, Japan Surface characterization of organic thin film based on particle assembly (Oral) 微粒子の集積による有機薄膜の表面解析 (D3) 玄 大雄・Wuled Lenggoro Keywords: Coating, Nanoparticle, Aerosol http://www3.scej.org/meeting/79a/ 2014.March, Gifu 化学工学会年会 Annual Conference of Society of Chemical Engineers, Japan Immobilization and concentration control of fine particles in agar matrix by electrophoresis (Poster) 電気泳動による寒天ゲルへの微粒子の固定化と濃度分布の調整 (M2) 渡辺 あずさ・Wuled Lenggoro Keywords: Hydrogel, Nanoparticle, Electrophoresis … Continue reading 3 students presented at 2 conferences, 学生の学会発表

Co-hosted a symposium: Aerosols on Plants & Human Health, 「エアロゾル・植物」行事を共催

Symposium : 東アジアにおけるエアロゾルの植物・人間系へのインパクト Impacts of Aerosols in East Asia on Plants and Human Health Sponsor: Grant-in-Aid for Scientific Research on Innovative Areas Date: 24-26 January 2013, Place: Building no.11, TUAT Koganei campus. 平成25年1月24日~26日に東京農工大学(工学部、小金井キャンパス)において平成24年度第2回全体会議を行います。 Program: http://www.tuat.ac.jp/~aerosol/pdf/Heisei24%20dai2kai%20program.pdf Project: http://www.tuat.ac.jp/~aerosol/ Continue reading Co-hosted a symposium: Aerosols on Plants & Human Health, 「エアロゾル・植物」行事を共催

PAPER. Measuring carbon particles on leaf surface, 葉面上の炭素系粒子の計測手法

Journal: Asian Journal of Atmospheric Environment (2012) Optical method for measuring deposition amount of black carbon particles on foliar surface Authors: M. Yamaguchi, K. Takeda, Y. Otani, N. Murao, H. Sase, I. W. Lenggoro, K. Yazaki, K. Noguchi, A. Ishida, T. Izuta Full article (PDF): http://asianjae.org/browse_sub.html?class_no2=30 研究機関: 東京農工大学(農), 北海道大学(工), 日本環境衛生センター/アジア大気汚染研究センター, 森林総合研究所, 東京農工大学(工), 京都大学生態学研究センター Affiliations 1: Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo … Continue reading PAPER. Measuring carbon particles on leaf surface, 葉面上の炭素系粒子の計測手法

Co-hosted: International Symposium on Aerosols in East Asia & Their Impacts on Plants & Human Health (11/29-12/1)

We co-hosted and most of students assisted an International Symposium held in our campus: Aerosols in East Asia and Their Impacts on Plants and Human Health Nov.29-Dec.1, TUAT Koganei campus 東京農工大学小金井キャンパスで開催されるエアロゾル国際シンポジウム >> Symposium website Presentations from our group: 0) A Plant Growth Chamber System Facilitated with Aerosol Depositor for Transporting Submicron Articles onto Leaf Surfaces. M. Gen (D2), S. Ikawa (D3), F. Y. Lim, M. … Continue reading Co-hosted: International Symposium on Aerosols in East Asia & Their Impacts on Plants & Human Health (11/29-12/1)

PAPER. Visualization of particles on the leaves in trees, 葉面上の粒子の可視化

ARTICLE: Visualization of artificially deposited submicron-sized aerosol particles on the surfaces of leaves and needles in trees 植物(樹木)の葉表面に任意的に微粒子を沈着し、その「可視化」技術に関する研究成果。 Authors: K. Yamane, S. Nakaba, M. Yamaguchi, K. Kuroda, Y. Sano, I. W. Lenggoro, T. Izuta, R. Funada Journal: Asian Journal of Atmospheric Environment. For PDF: http://asianjae.org/browse_sub.html?class_no2=30 Authors’ Affiliations 1) Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan 2) Forestry and … Continue reading PAPER. Visualization of particles on the leaves in trees, 葉面上の粒子の可視化