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.

【医療機器】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..

【材料合成技術】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.

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?

【水の清浄】電気泳動法で水道水中の微粒子の採集 Collection of fine particles in tap/drinking water by electrophoresis.

Other “intro” of papers from our lab >> /tag/paper/ Removal of iron-oxide particles after post-filtration in local potable water using an electrophoretic method Collaborated with: Univ. Putra Malaysia; Univ. Teknologi MARA, Malaysia Journal of Water Process Engineering: Vol. 9, Feb. 2016, Pages 208–214. doi: Full text/PDF: Researchgate, or here Keywords: Electrophoretic deposition; Fibre electrodes; Limiting flux;…

【環境技術】薄板の裏側まで微粒子が沈着?Are the particles deposited to the back of a sheet?

Simultaneous deposition of submicron aerosols onto both surfaces of a plate substrate by electrostatic forces We demonstrate one-step deposition of submicrometer-sized particles suspended in the gas-phase onto a plate type substrate using an electrostatic-assisted spray system. The particles were deposited on plate-type metallic surfaces, on both front and rear sides of the substrate. This “both-side”…

【植物と微粒子】2年間、水溶性微粒子を植物に与えたら?Effect of water-soluble particles on growth of plants (2 years)

JOURNAL: Atmospheric Environment (2014)http://www.sciencedirect.com/science/article/pii/S1352231014000405 Effects of 2-years exposure to (sub-micron) ammonium sulfate particles on growth and gas exchange rates of Fagus crenata (ブナ), Castanopsis sieboldii (スダジイ), Larix kaempferi (唐松) and Cryptomeria japonica (スギ) seedlings •No significant effect of the particles on growth was observed after 2 years.•Net photosynthetic rates of 3 species were not significantly changed.•Net photosynthesis of…

【材料合成技術】電気化学法で合成した磁鉄鉱ナノ粒子の熱安定性 Thermal stability of magnetite particles made by an electrochemical method

Magnetite nanoparticles have been prepared by electrooxidation of iron in water. Surface modifications have been conducted by coating the nanoparticles with silica by a one-step synthesis in dilute sodium silicate solution. 水中の鉄の電気酸化によってマグネタイトナノ粒子を調製した。希薄ケイ酸ナトリウム溶液中での一段階合成によりナノ粒子をシリカで被覆することにより表面改質を行った。

【植物と微粒子】森林へのエアロゾル沈着過程を解明. Deposition process of particles into forests

Particulate matter strongly adsorbed onto leaf surfaces is not washed away by rainfall and contributes to the EC (Elemental Carbon) flux. Leaf-surface particles must be included when evaluating the dry and total fluxes of particulate matter, in particular for water-insoluble constituents such as EC. 葉面に強く「付着」した粒子状物質は降雨によって洗い流されず、EC(元素炭素)フラックスに寄与する。粒子状物質、特にECのような水不溶性成分の乾燥流束および全流束を評価する場合には、葉表面粒子を含めなければならない。

【環境計測技術】煙突の模擬~ガスから微粒子への転換を計測した : Measuring particles from mixed gases

These results may be informative for predicting phenomena related to gas-to-particle conversion at the exit of stationary emission sources.火力発電所等の燃焼過程から生成すると考えられる混合排気ガスを実験室内で模擬した。This paper was awarded 2013 Takahashi Award from Japan Association Aerosol of Science and Technology. エアロゾル学会の2013年のTakahashi賞を受賞。