Original Technology 独自技術

Facilities.設備 // Publications.発表論文の例 // Doctoral Thesis.博士論文 //

Study of particulate phenomena in chemical- and bio-systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics and chemical equilibrium…運動、エネルギー、力、時間、熱力学、化学平衡などの「物理学」の原理、実践、および概念の観点から、「化学」および「バイオ」システムにおける「微粒子現象」を研究する。

ORIGINAL TECHNOLOGIES (Developed at TUAT, since 2007)


A method of depositing or accumulating submicron particles suspended in the gas-phase on a target substrate, without the use of an electric field. 電場を使わないで、気相中に浮遊するサブミクロン粒子を目的の基板に沈着または集積させる方法  > Reference (2018) 日本エアロゾル学会・高橋幹二賞。 Kanji Takahashi Award (Japan Aerosol Association of Science & Technology)


An assembly method for nanoparticle layer/film (with tunable optical properties) derived from colloidal nanoparticles. 液相中のナノ粒子を用いた(光学特性の調整可能)膜の製造方法. Patent application (2018/2/7, 特許出願2018-020507, 公開2019-136636), Applicant: TUAT and a company). Co-inventor is a student.学生が発明者の一人。> Reference: Journal paper(2018)

An assembly method for hydrophilic or hydrophobic layers of carbonaceous nanoparticles from candle soot. ロウソク(煤)を用いて、親水性または疎水性層を有する炭素質ナノ粒子膜の作製する方法.. >> Article 詳細


> Reference/Journal paper(2018)

2017: A method for detachment of submicron (few hundred nanometers) particles from substrates using an ultrasonic cleaner. 低出力超音波クリーナーを用いて基板・表面からサブミクロン(数百ナノメートル)の粒子を脱離する方法 【Introduction of a journal article 発表論文の紹介】What can be done with a low-power ultrasonic cleaner to remove submicron particles, which is considered a difficult task? 難関とされるサブミクロン粒子の離脱、低出力型超音波洗浄機で何が出来るか?

2017: Electrochemical synthesis method for liquid-phase nanoparticles (below 100 nm) ナノ粒子を合成する電気化学法。Patent application.特願2017-24626 (Nov. 2017, Applicant: university/TUAT and a company). Co-inventors are two students.大学院生も発明者。( 特開2019-112668 (P2019-112668A) 2019年7月11日)リン酸カルシウム粒子の製造方法

2017: Aerosol particles collector, a “passive” sampling system. Without using a pump. Collect (only) sub-micron particles among the other sizes. 大気環境中から数百nmの粒子のみを選別するパッシブ型サンプラー (吸引ポンプを用いない)


2014: A sensor/analytical system (using aerosol nanoparticles) for probing a coated layer of organic molecules, at sub-100 nm resolution.気中分散微粒子を用いたSERSによって、表面上の分子レベル「パターン」を「可視化」する技術

M. Gen & I. W. Lenggoro, RSC Adv. (2015)
Gen & Lenggoro, RSC Adv. (2015)

The “main” researcher Dr. Masao Gen (Research Fellow at City University of Hong Kong), then applied ES-SERS (Electrospray-Surface Enhanced Raman Spectroscopy) for probing particulate matter. Open-access: Atmos. Chem. Phys. (2017)


Metal nanostructures-type chip for Raman spectroscopy based chemical sensor system
(Product available upon request. Based on a collaboration with another institution)

Fabrication of Sensor for Surface Enhanced Raman Spectroscopy (SERS) Method
Fabrication of Sensor for Surface Enhanced Raman Spectroscopy (SERS) Method


Plant growth chamber with submicron aerosol particle generator and deposition system
… Three units were set up and used for two years experiments at Fuchu campus.


2008-Patented.: Pulse electrophoresis system for high density water-based colloid
特開2009-256790, 特願2009-069155, 2009/03/19, 2009/11/05, 酸化チタンのコーティング方法


Recent journal articles from TUAT group.研究室から発表した(最近の)論文

W. Lenggoro moved from Hiroshima to Tokyo in Jan. 2007.

Research-based products (企業にて商品化)
Based on Lenggoro’s works with Hiroshima Univ.
(co-managed a lab with Prof. K. Okuyama)

Pulse-spray pyrolysis reactor (for pharmaceutical powder etc.)
(Commercialized by a powder-related company in Kobe, and Yokohama)

Electrospray-based nanoparticle generator for particles below 100 nm.

Electrostatic-spray system. Directly linked from SIbata.Co.Jp
Electrostatic-spray system. Directly linked from Sibata.Co.Jp

Discovery of water-based cluster ion, 水の微細化から生成するイオンの発見
– The related products have been commercialized by an electronics giant.
– Among the best-seller in Japan, since 2003.


2002-patented technology (by RIKEN and its venture company)
Measurement system for sizing liquid-phase nanoparticles via aerosol route
– Another application (TSI, USA)
Brochure of a product (for measuring 5 kDa to > 100 MDa macromolecule)

Spray pyrolysis-based powder synthesis reactor
Commercialized by a Hiroshima University’s venture company. The first spin-off company from Hiroshima University.