Tag Archives: Simulation

Thermal convections break the suspended mist: A new particle synthesis method. 熱対流が浮遊ミストを破壊:新しい粒子(層)の合成法



•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 nanoparticles with high crystallinity.

Advanced Powder Technology. doi.org/10.1016/j.apt.2017.10.026

Continue reading Thermal convections break the suspended mist: A new particle synthesis method. 熱対流が浮遊ミストを破壊:新しい粒子(層)の合成法

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

Kusdianto, Doctoral presentation, 19 Aug. 2014, 博士論文公聴会

19 Aug. 2014. BASE 1st floor meeting room

DOCTORAL THESIS: The role of chemical and physical properties of substrate in the deposition of particles
by KUSDIANTO (Also a faculty member of Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, ITS)

Go to hydropilic surface


Are the particles deposited to the back of a sheet? 薄板の裏側まで微粒子が沈着するのか?

Open article in PDF

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.



Recent journal articles: From our group.
Recent journal articles: From our group.

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


GEN, MASAO (玄 大雄)
Dr.Eng. 博士(工学)
Graduated in June 2014, Doctor of Engineering,
Grad. School of Bio-Applications and Systems Engineering (BASE).
東京農工大学 大学院 生物システム応用科学府 博士課程

  • Doctoral course (from 2011/10-2014/6), 博士課程後期(短縮修了)
    (Primary Supervisor: Wuled Lenggoro)
  • Master course (2010/4-2011/9), 博士課程前期(短縮修了)
    Thesis : External force-assisted assembly of aerosol particles on a substrate
    外力を用いたエアロゾル粒子の固体基板への集積 (in English)
    (Primary Supervisor: Wuled Lenggoro)
  • Bachelor course (Department of Chemical Engineering, TUAT, 2006/4-2010/3)
    東京農工大学 工学部 化学システム工学科 卒業
    (Primary Supervisor: Wuled Lenggoro)
  • Visiting doctoral student at Universiti Putra Malaysia (June-July 2012)
    (Host: Prof. M. Pauzi Zakaria, Faculty of Environmental Studies
    and Dr. M. Nazli bin Naim, Department of Process and Food Engineering)
    Sponsor: TUAT/FOLENS program

Iinoya Award 2013 for Masao Gen

2013: Iinoya Award (from JAAST)
Development of a portable sensor system based on aerosol particles to detect pesticide residues

2013: Kanji Takahashi Award from JAAST (As co-author),
Article published in Journal of Aerosol Research (Earozoru Kenkyu, 2011)
(Authors: Hama, Takashima, Gen, Tsukada, Kamiya, Lenggoro)

2013: Project leader of TUAT Innovation Organization Program Grant
“Development of a sensor system based to detect pesticide residues”
(文部科学省実践型研究リーダー養成事業 「ニーズ展開実践型高度研究人材養成モデル化事業」平成25年度プログラムの一環)

2012: TUAT FOLENS Program Travel Grant – for stay (30 days) Universiti Putra Malaysia. (FOLENS report)

2011: Certificate of Commendation from University (TUAT) president for work on “Design and fabrication of aerosol system for plants-growth chamber”. 農学府と連携した「粒子発生装置付き植物育成システム」に関する研究成果発表(APCChE-13)で学長からの表彰状。

2010: 13th Asia Pacific Confederation of Chemical Engineering (APCChE-13)
BEST POSTER PAPER AWARD (Category: Clean Energy Systems and The Environment)
“A plant-growth chamber system for the exposure to submicron aerosol particles”
(Lenggoro, Gen, Lim, Ikawa, Yamaguchi, Izuta)

* Society of Chemical Engineers, Japan
* Japan Association of Aerosol Science and Technology
* Pesticide Science Society of Japan

A colloidal route to detection of organic molecules based on surface-enhanced Raman spectroscopy using nanostructured substrate derived from aerosols,
M. Gen, H. Kakuta, Y. Kamimoto, I. W. Lenggoro,
Jpn. J. Appl. Phys. 50 (2011) 06GG10 (5 pages)

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
Vol. 12 (2014) p. 238-241

Plant growth chamber system for submicron aerosol delivery to the leaf surfaces,
M. Gen*, S. Ikawa*, M. Yamaguchi, F. Lim, T. Izuta, I. W. Lenggoro,
*Equal contribution

Area-selective deposition of charged particles derived from colloidal aerosol droplets on a surface with different hydrophilic levels
K. Kusdianto, M. Gen, I. W. Lenggoro
Journal of Aerosol Science (2014)

Transformation of cyclodextrin glucanotransferase (CGTase) from aqueous suspension to fine solid particles via electrospray method
Enzyme and Microbial Technology (2014)
Saallah, Naim, Mokhtar, Abu Bakar, Gen, Lenggoro

Probing a dip-coated layer of organic molecules by aerosol nanoparticles sensor with sub-100 nm resolution based on surface-enhanced Raman scattering
M. Gen & I. W. Lenggoro (RSC Advances, 2014)

A protocol for detection of chemical residues distributed in a field using surface-enhanced Raman spectroscopy method,
M. Gen, H. Kakuta, Y. Kamimoto, I. W. Lenggoro (submitted)

Surface-enhanced Raman spectroscopy from metal nanoparticles derived from charged aerosols,
M. Gen and I. W. Lenggoro (submitted)

Vacuum-induced rearrangement of pattern of metal nanoparticles deposited on a flat substrate
M. Gen and I. W. Lenggoro (Submitted)

Micro-Raman investigation on the hygroscopic behavior in nanoparticles filled ammonium sulfate particle deposited on a substrate
I. W. Lenggoro, E. Herliana, M. Gen, A. Seki (submitted)

Generation of nano and submicro-meter sized carbonaceous aerosol particles
S. Ikawa*, M. Gen*, I. W. Lenggoro (submitted) *: Equal contribution

Effects of structures of dilution samplers and operating conditions on aerosol formation from CdCl2 vapor gas
H. Kamiya, M. Gen, T. Sekizawa, K. Hada, T. Ejima, M. Tsukada, I. W. Lenggoro (submitted)

Measurement of aerosols derived from model gas containing two metal components after cooling and dilution process
N. Hama, Y. Takashima, M. Gen, M. Tsukada, H. Kamiya, I. W. Lenggoro
Earozoru Kenkyu (Journal of Aerosol Research Japan), 26(4) 277-285 (2011)

IAC (International Aerosol Conference) Busan, Korea.
2014, August 28 to September 2
(Gen and Lenggoro)

IAC (International Aerosol Conference) Busan, Korea.
2014, August 28 to September 2
(Kus, Gen, Lenggoro)

8th Asian Aerosol Conference (2-5 December 2013) Sydney.
Aerosol-Assisted Characterization of Organic Molecules Adsorbed on a Solid Substrate
(Gen & Lenggoro)

5th Nanoscience and Nanotechnology Symposium, NNS,
23-25 October 2013 (Hotel Meritus, Surabaya, Indonesia)
CS-68. Fabrication of nanostructure derived from gas-phase nanoparticles for detection of organic molecules

5th Asian Particle Technology Symposium, Singapore 3-5 July 2012
172: Oral: Assembly of Gas-Phase Nanoparticles on a Structural Substrate for Spectroscopic-Based Sensor to Detect a Pesticide
Masao Gen*, Hideo Kakuta, Yoshihito Kamimoto and I. Wuled Lenggoro

Deposition of submicron aerosols on both sides of a substrate derived from charged droplets of aqueous suspension:
M. Gen, S. Sagawa, H. Kamiya, W. Lenggoro,
7th Asian Aerosol Conference, 2011/8/17-20, Xi’an (China)

Nanostructured substrates derived from aerosol nanoparticles for a tagging system with surface-enhanced Raman spectroscopy (Poster, 11D-8-59),
M. Gen, H. Kakuta, Y. Kamimoto, W. Lenggoro
23rd International Microprocesses and Nanotechnology Conference, 2010/11/9-12, Fukuoka

第78回化学工学会年会 2013/03/17

日本農薬学会第38回大会 2013/03/14

希釈器内における混合ガス由来のモデルエアロゾルの計測 (Invited)
COMSOL Conference Tokyo 2012, 2012/11/22

空気中に浮遊する微粒子の検出技術 ~ナノスケール構造体の形成から農薬散布のモニタリングまで~
東京農工大学 科学技術展 2012, 2012/11/09

微粒子汚染と植物への影響 -モデル微粒子の生成と沈着が可能な装置の開発-
東京農工大工 科学技術展 2012, 2012/11/09

(東農工大院BASE)玄 大雄・ (植物情報物質研究セ) 角田 英男・ (神奈川県産技セ) 上元 好仁・ (東農工大院工) Wuled Lenggoro
化学工学会 第77年会, 2012/3/15

Front- and rear-side deposition of submicron aerosols derived from charged droplets containing particles (Poster)
Gen Masao, Sagawa Shin-ichi, Kamiya Hidehiro, Wuled Lenggoro
化学工学会 第43回秋季大会: 2011/9/14-16, Nagoya

玄 大雄・角田 英男・上元 好仁・Wuled Lenggoro
化学工学会 第43回秋季大会, 2011/9/14-16: Nagoya

W. Lenggoro, 玄 大雄, 佐川 慎一, 伊豆田 猛,
化学工学会秋季大会, 2010/9/6, Kyoto.

Electrical-assisted deposition of aerosol particles derived from aqueous suspension of nanopowders (3I05),
M. Gen, S. Sagawa, N. Naim, M. Iijima, H. Kamiya, W. Lenggoro*
セラミックス協会2010年会, 2010/3/24, Tokyo

玄 大雄, Lim Fong Zyin, 井川 誠司, 山口 真弘, 伊豆田 猛, Lenggoro Wuled*
第12回 化学工学会 学生発表会(東日本地区) 2010/3/6, Tokyo

OTHER PRESENTATIONS (as a co-author)
環境大気中PM2.5 の表面電位の測定
第30回エアロゾル科学・技術研究討論会 2013/08/27

第22回環境化学討論会 2013/07/31

Hygroscopic Behavior of Inorganic Particles Deposited on Solid Surfaces
9th Asia Pacific Conference on Sustainable Energy & Environmental Technologies (APCSEET 2013) 2013/07/05

A protocol to detect chemical residues using a nanoparticle-based sensor combined with a Raman spectroscopic method
19th Regional Symposium on Chemical Engineering, 2012/11/07

Hygroscopic behavior of inorganic particles deposited on solid surfaces
第29回エアロゾル科学・技術研究討論会, 2012/08/28

5th Asian Particle Technology Symposium, Singapore 3-5 July 2012
122: Oral: A Chamber System with Aerosol Generators for Exposures of Plants to Submicrometer-Sized Particles
Wuled Lenggoro*, Masao Gen, Seiji Ikawa, Fong-Zyin Lim, Masahiro Yamaguchi and Takeshi Izuta

An aerosol generator system for long-duration exposures of plants to submicrometer-sized particles
W. Lenggoro; M. Gen; F.-Z. Lim; S. Ikawa; M. Yamaguchi; T. Izuta
2011/8/17-20, Xi’an

A plant growth chamber system for the exposure to submicron aerosol particles
Wuled Lenggoro, Masao Gen, Fong-Zyin Lim, Seiji Ikawa, Masahiro Yamaguchi, Takeshi Izuta
13th Asia Pacific Confederation of Chemical Engineering Congress, 2010/10/6-8, Taipei

Lim Fong Zyin, 玄 大雄, 神谷 秀博, 伊豆田 猛, Wuled Lenggoro,
化学工学会秋季大会, 2010/9/7, Kyoto.

Wuled Lenggoro, 玄 大雄 , Lim Fong Zyin, 井川 誠司, 山口 真弘, 伊豆田 猛
2010エアロゾル科学技術研究討論会, 2010/8/4, Nagoya

佐川 慎一、玄 大雄、Nazli Naim、飯島志行、神谷秀博、Wuled Lenggoro,
2009エアロゾル科学技術研究討論会, 2009/8, Okayama

Other doctoral thesis from our group (Supervisor: Wuled Lenggoro at TUAT, since 2007)


|| Present member || Former member ||

Invited presentation. COMSOL (a simulation software) conference. 熱流体シミュレーション(招待)発表

We were invited for a poster talk at 2013 COMSOL Conference 2013 (Tokyo, 7 Dec.)

Optimization of Post-Heat Treatment for Doping of Metal Oxide Particles

by P. Widiatmoko, Y. Kondo, H. Matsushima, W. Lenggoro

Liquid-to-solid route for preparing a doped metal oxide (powder) shows advantage on the homogeneity of the precursor as well as the product. Heat treatment plays important role in the process where the salt of precursor in the liquid reacts to form metal oxide solid particles and doped with ions of another element. Understanding the effect of heat treatment in the doping process will then give great advantages. In the present study, different heat-treatment profiles had been proposed and applied to increase the efficiency of doping.

Iinoya Award to a student (30th. Symposium on Aerosol). 院生が学会賞受賞

Iinoya Award 2013 for Masao Gen
Doctoral student: MASAO GEN got the 2013 IINOYA AWARD
during 30th SYMPOSIUM ON AEROSOL SCIENCE & TECHNOLOGY (held in Kyoto Univ.)
(Supplementary prize = cash prize of 100,000 Yen)


“Development of a portable sensor system based on aerosol particles to detect pesticide residues”


(東京農工大学・大学院博士後期課程)玄 大雄

The award selection was based from a “special session” (5 min. presentation and more than 10 min. Q/A). This session is the only session running; few hundred attendees were the judges. Not only graduate students, but senior researchers also join this session. 【井伊谷賞】ほとんどのシンポジウム参加者が審査員..特別セッションでの優れた発表を対象.エアロゾルに関する萌芽的な研究,問題点の指摘,新しい分野の開拓,未来志向の夢のある話題など,学会の発展・活性化に寄与するものについて,遊びとゆとりの気持ちを持って発表.(エアロゾルとは、気相中に浮遊する固体または液体)

これまでの受賞者: A list of winner of Iinoya Award.

Our other presentations at
August 27−29, 2013, Kyoto Univ.
2013年 8月27日(火)- 29日(木)

Evaluation of generation behavior of condensable suspended particulate matter from stationary sources by using model flue gas
E04* 固定発生源からの凝縮性SPM生成挙動のモデル燃焼排ガスを用いた考察
(東京農工大学)前田洋輔・江島達弥・ 塚田まゆみ・Wuled Lenggoro・神谷秀博 (電力中央研究所)野田直希・牧野尚夫
(With TUAT Kamiya Lab, and Central Research Institute of Electric Power Industry)


Development and evaluation of a coarse particle generator using piezoelectric device
SE09* 圧電素子を利用した粗大粒子発生器の開発と評価
(柴田科学㈱, 東京農工大学)井川誠司
(東京農工大学)玄 大雄・Wuled Lenggoro
(With Sibata Scientific Technology, Ltd)

Measurement of the surface potential of PM2.5 in ambient air
YP05* 環境大気中PM2.5の表面電位の測定
(東京農工大学)K. Kusdianto・玄 大雄・ 佐藤誠一・Wuled Lenggoro
[Poster: Main researchers are Okuda group, Keio Univ.]

(An invited talk in 9th Aerosol Young Researcher Meeting)
“Networked Aerosol Researches”

第9回エアロゾル学会若手討論会 【招待講演】Wuled Lenggoro

Lenggoro at JAAST Symposium Kyoto
– This is photo is provided by Young Associations in JAAST