PAPER: A flow system for positioning submicron particles on (40 deg. C) surface. 流体の制御で40℃の表面に微粒子を集積させた

Why 40 deg. C ?  This study considered the deposition of submicron particles on living-cell or “human-body”-modeled surface. Why a fluorescence microscope? Because other analytical tools such as SEM, work in low pressure or vacuum, which is not matched with living-system. An aerosol flow system has been constructed to mimic the delivery of particles to the air-liquid interface. A colloidal suspension of submicron fluorescent core-shell … Continue reading PAPER: A flow system for positioning submicron particles on (40 deg. C) surface. 流体の制御で40℃の表面に微粒子を集積させた

An invited talk at JpGU ((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” This study was performed by TUAT students: K. Kusdianto (Dr. Eng., now with Sepuluh Nopember Institute Technology (Chemical Engineering) Indonesia; K. Sasaki (M. … Continue reading An invited talk at JpGU ((Japan Geoscience Union)

PAPER: Hydro-philic/-phobic layers from burning candle. ろうそくから「親水性 or 疎水性」粒子層をつくる


light-1551386_960_720Using “soot” from candle burning, our lab developed two assembly routes for 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(2種類)を開発しました。

contact-angle-Ferry2017

Open access (Full PDF): https://doi.org/10.4209/aaqr.2017.10.0426

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More… Continue reading “PAPER: Hydro-philic/-phobic layers from burning candle. ろうそくから「親水性 or 疎水性」粒子層をつくる”

PAPER: Thermal convections break the suspended mist: A new particle synthesis method. 熱対流が液滴群を微細化~粒子層の新合成法

Discovery of a low-energy route to layer of nanometer-sized particles with high crystallinity. 高結晶性を有するナノ粒子層への「省エネプロセス」の発見。 Continue reading PAPER: Thermal convections break the suspended mist: A new particle synthesis method. 熱対流が液滴群を微細化~粒子層の新合成法

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・・”

Doctoral Presentation (8/17) on Enzyme Immobilization (by Suryani Saallah) 酵素の固定化(博士公聴会)

DEPOSITION AND IMMOBILIZATION OF ENZYME BY MEANS OF ELECTROHYDRODYNAMIC ATOMIZATION (電気流体力学効果を用いた酵素の固定化)

by Suryani binti Saallah**suryani-nanofiber2016B

12:30-  17 Aug. 2017 (BASE Building 1F meeting room, TUAT Koganei campus)

 

Continue reading “Doctoral Presentation (8/17) on Enzyme Immobilization (by Suryani Saallah) 酵素の固定化(博士公聴会)”

Doctoral student presented in Asian Particle Technology Symposium 2017 (Taiwan). 博士学生が台湾で発表した

Ferry Faizal (doctoral student) presented “Decomposition of solution droplets under the influence of thermal convection over a heated horizontal plate” in the 7th Asian Particle Technology Symposium (30 July – 3 August, 2017 at Chang Gung University Campus, Taoyuan, Taiwan).

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Our talk was invited and published in APT2017 special issue (Advanced Powder Technology).

doi.org/10.1016/j.apt.2017.10.026

Highlights:

  • The role of thermal convection on reactive spray deposition over a heated plate.
  • Nozzle-to-plate distance affecting morphology and size of deposited particles.
  • Discovery of a low-energy route to layer of nanometer-sized particles with high crystallinity.

ハイライト:

  • 加熱されたプレート上の溶液ミストの熱分解と堆積に対する熱対流の役割
  • ノズルとプレートとの距離が堆積粒子の形態とサイズに影響した。
  • 高結晶性を有するナノサイズ粒子層への低エネルギー手法の発見。

 
Continue reading “Doctoral student presented in Asian Particle Technology Symposium 2017 (Taiwan). 博士学生が台湾で発表した”

A graduate student at Asian Aerosol Conference (Korea, July 2017)

A doctoral student (Ferry Faizal) presented his study at 10th Asian Aerosol Conference (AAC2017), which was held in Jeju, Korea, 2 to 6 July 2017. Assembly of particles from candle burning Attracting 541 delegates, speakers, and sponsors from 19 countries around the world. Photo: Conference official website Continue reading A graduate student at Asian Aerosol Conference (Korea, July 2017)

A doctoral student presented in Asian Aerosol Conference 2017 (Jeju, Korea)博士学生が韓国で発表した。

Presenter: F. Faizal (Doctoral student), Co-author: S. Yokote (Master-student), M. P. Khairunnisa (former doctoral student, now with Ministry of Higher Education, Malaysia), W. Lenggoro “Direct- and Electrospray-Depositions of Particles Derived from Burning Candles” DATE: JULY 2 – 6, 2017,  VENUE: ICC JEJU, JEJU, KOREA * Presentation by student >> LIST       Continue reading A doctoral student presented in Asian Aerosol Conference 2017 (Jeju, Korea)博士学生が韓国で発表した。

An Electric Field Mill in BASE building Koganei Campus

学芸大学(鴨川研究室)の主催で、レンゴロ研究室は大気電場多点観測ネットワークに協力することになりました。研究の目的としては、多摩地区では落雷や降雹、ゲリラ豪雨を伴った積乱雲が数多く発生することが報告されています。これらの現象は雷雲が作り出す電場の変動と密接な関係があると考えられ、レーダー観測と合わせることで雷雲の電気的な構造を明らかにしていきます。大気電場測定装置を小金井を中心とした半径5km以内の領域に集中展開します。他の設置場所候補として、JAXA筑波宇宙センター、調布航空宇宙センター、調布飛行場があります。 Organized by Gakugei University (Kamogawa laboratory), Lenggoro laboratory has cooperated within the atmospheric electric field multipoint observation network. It is reported that in Tama area many thunder clouds accompanied by lightning strikes, hail, and “quick” heavy rain are generated. These phenomena are thought to be closely related to the fluctuation of electric field which thunder cloud produces, and the project will clarify the electrical … Continue reading An Electric Field Mill in BASE building Koganei Campus