2026-08-25 京都大学
表面をガラス層で絶縁したグラファイト粒子の向きをそろえて固めた「魔法の絨毯」の浮上イメージ。©️京都大学／武田和行准教授作成
＜関連情報＞
- https://www.kyoto-u.ac.jp/ja/research-news/2026-08-25-2
- https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/anse.70099
表⾯絶縁および磁気配向されたグラファイト粒⼦を⽤いた反磁性浮上センシングプラットフォーム Diamagnetically Levitated Sensing Platforms Made With Surface-Insulated and Magnetically Aligned Graphite Particles
Tomoya Kamide, Ayuto Tatsubo, Jason Twamley, Kazuyuki Takeda
Analysis & Sensing Published: 02 July 2026
DOI:https://doi.org/10.1002/anse.70099
Abstract
We report on development of graphite-based, diamagnetically levitated platforms optimized in terms of both the diamagnetic lifting force and the minimized mechanical loss arising from bulk eddy currents. In addition to surface insulation of graphite particles by silica coating as reported (Tian et al., Applied Physics Letters, 2024, 124, 124,002), the particles are made to be oriented in a common direction. The direction of alignment is tailored according to the profile of the magnetic field used for diamagnetic levitation by applying either a rotating or a stationary magnetic field to viscosity-tuned slurry containing the insulated graphite particles before drying up into a solid plate. The low-loss and lift-force-optimized levitated platforms open the door to various sensing applications and will find diverse interest.
