北海道大学 · 材料科学
Seiichi Watanabe教授の研究室では、ナノ材料の創製とその応用に焦点を当てた先端的研究が行われています。特に、溶液プラズマ法を用いた酸化チタンナノ粒子の合成や、レーザー誘起ナノ構造の自己組織化メカニズムの解明が進んでいます。材料の表面・界面における原子配列や反応機構の解明を通じて、太陽光利用効率の向上や新規ナノ材料の設計に貢献しています。
Figures are computed from collected data and may differ slightly.
Black TiO2 nanoparticles (b-TiO2) with superior solar–thermal water evaporation performance are prepared using a one-step solution plasma process (SPP) in ambient conditions. It is found that radicals that are generated during SPP play a critical role in b-TiO2 formation by comparing several water–alcohol electrolyte environments for the SPP synthesis. Our results show that the radical-induced formation of a black TiO2–x layer on the Ti electrode is necessary for b-TiO2 formation, which was igno
An in situ observation of the formation of a laser-irradiation-induced nanodot array on a Si surface was performed using a pulsed-laser-equipped high-voltage electron microscope (laser-HVEM). Under multiple nanosecond (ns) pulsed laser irradiation shots, atomic clusters were first formed and distributed on the surface in order to grow them epitaxially into protruded dots with diameters of ten nanometers or less. This is followed by their diffusion induced by successive laser shots to cannibalize
Electron microscopic studies have been made of austenite partially transformed from prior martensitic structure in the temperature range between Ac1and Ac3.It has been found that each acicular austenite grain which has been formed from ferrite laths with same orientation has same crystallographic orientation and the austenite has the KURDJUMOV-SACHS orientation relationship with the ferrite. The both lath boundary and cementite play an important role in the formation of acicular austenite grains
Open papers in the app to read, cite, and organize with AI.
