Droplet generator: Ultrasonic nebulizer (1.7 MHz). Micrometer sized sprayed droplets include silica nanoparticles (average particle diameter of 145 nm). A single substrate with areas having different “level” of hydrophilicity was used as a model surface. A low-pressure analysis method (electron-microscope SEM) and ordinary (1 atm) pressure methods (Raman spectroscopy and X-ray fluorescence) analytical results indicated…
Tag: Process
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.
水中のマグネタイト微粒子の量産化に向けた電極設計.Electrode structuring for production of magnetite nanoparticles in water.
◆環境に優しい（磁性）ナノ粒子製造プロセスを提案。◆水と鉄（電極）以外に化学薬品は必要ない
*Environmentally friendly process for (magnetic) nanoparticles. *No chemicals are needed, except water and iron (electrode).
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..
液中粒子の表面電荷とそれらのエアロゾル化時の荷電との関係 Between surface charges of colloidal particles and their corresponded aerosols.
Interaction between surface charge (zeta potential) of colloidal nanoparticles and the charge induced droplets suspended in the gas phase by electrospray is investigated for the first time. 液相中のナノ粒子の表面電荷（ゼータ電位）と気相中操作（静電噴霧）により懸濁液滴の荷電（電荷）の間の相互作用について初めての研究。
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.
Using “soot” 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？
熱対流が浮遊液滴を破壊した後に化学反応 A synthesis method = Thermal convections break the droplet?
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。
1st event: Japanese Technology -Process Industry- to Indonesia (Feb. 2017)
Organized: Japan Management Association, 日本能率協会（JMA) 第3回プロセス産業向けASEAN販路開拓支援プログラムinインドネシア: http://www.jma.or.jp/asia/process/ Schedule: 2017/Feb/21-23
“Reusable” enzyme in 200 nm polymer fiber: 高分子繊維中に「再利用可能」酵素を固定化
Enzyme in polymer-nanofibers show excellent immobilization efficiency. 高分子ナノファイバー中の酵素は優れた「固定化」効率を示す。
PAPER: Removal of particles from potable water. 水道水（飲料水）から微粒子を採集
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;…
PAPER: Fine particles on bio-composite surface. ココナツ殻由来素材の表面に微粒子を集積
Other “intro” of papers from our lab >> /tag/paper/ HIGHLIGHTS:* Physical treatment on the biocomposite increases the surface roughness.* Single bond COOH network on the treated biocomposite promotes the particle deposition.* The network reduces the particles repulsion during the deposition process. # Bio-composite（バイオコンポジット）is a composite material formed by a matrix (resin) and a reinforcement of…
Plant-derived materials for a synthesis of battery powder.電池用粉末の合成に植物由来の原料を使ってみました。
Without a milling process (break-down) process, Lithium-battery material can be synthesized, in submicron size (100-600 nm) through glucose-assisted combustion synthesis.（植物由来原料）グルコースを添加した新しい「燃焼合成法」により二次電池用粉末をサブミクロンサイズで合成できた。
Can particles in water be immobilized in sub-100 nm holes? 水中浮遊粒子を100nm以下の穴に固定化
水中浮遊粒子を100nmの穴に固定化できるのか？サンドイッチ型複合材料？
2008年に特許出願した技術の応用例。
An example application of our patented Pulse Electrophoretic Deposition (PEPD) Method.
How small can the enzyme be ? 酵素(粒子)はどこまで小さくできるのか？
http://dx.doi.org/10.1016/j.enzmictec.2014.06.002 Transformation of an enzyme: from aqueous suspension to fine solid particles via electrospraying route 静電噴霧法による糖転移酵素の微粒化 by* Dept. of Process and Food Engineering, Univ. Putra Malaysia; * Biotechnology Research Institute, Univ. Malaysia Sabah; * Faculty of Chemical Engineering, Univ. Teknologi MARA; * Grad. School of Bio-Applications and Systems Engineering, Tokyo Univ. of Agriculture and Technology…
PAPER: Thermal stability of magnetite particles made by an electrochemical method, 電気化学法で合成した磁気粒子の熱安定性
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。
PAPER. Silica-coated magnetite particles by electrooxidation, 電解酸化で磁性粒子の合成
Method: Electrochemical method.
Material: Silica-coated magnetite nanoparticles
Size: 6 to 10 nm
Property: superparamagnetic
方法: 電気化学的
材料: シリカ被覆マグネタイト
粒子サイズ:6-10nm
特性: 超常磁性
PAPER: Nano-structure for on-site detection of pesticide. 残留農薬の現場検査に向けたナノ構造化
The substrate (chip) was made by structuring nanoparticles, and the detection accuracy of a trace (model: a pesticide) component using Raman scattering spectroscopy was improved. ナノ粒子の構造化による基板（チップ）形成を行い、ラマン散乱分光を用いた微量な（モデル：農薬）成分の検出精度を向上させた。
