MICRO FLUID DEVICE AND DIELECTROPHORESIS APPARATUS

• Main Authors: SAKASHITA ASAKO, NAKAYAMA TETSUYA
• Format: Patent
• Language: English; Japanese
• Published: 05.01.2015
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES; MICROSTRUCTURAL TECHNOLOGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; TESTING; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a micro fluid device suitable for accurately separating a large amount of particles, and a dielectrophoresis apparatus.SOLUTION: A micro fluid device 10 includes a transparent film 12 with insulation properties, a spacer 18, a first electrode, a second electrode, and a ground electrode. The transparent film 12 is wound around a conductor shaft 11, i.e. central axis, having a spiral form in the cross section vertical to the central axis. Due to the spacer 18 arranged between a predetermined circumference of the transparent film 12 and an outer adjacent circumference thereof, a gap is provided between the transparent film 12 at the predetermined circumference and the transparent film 12 at the outer adjacent circumference. The gap provided by the spacer 18 forms a channel 2 extending along the central axis, having a spiral form in the cross section vertical to the central axis. A high-frequency voltage is applied to the first electrode, the second electrode, and the ground electrode which are formed on the transparent film 12, so that dielectrophoresis is generated in a fluid flowing in the channel 2. 【課題】大量の粒子を精度よく分離するのに適したマイクロ流体デバイス及び誘電泳動装置を提供する。【解決手段】マイクロ流体デバイス１０は、絶縁性の透明フィルム１２とスペーサ１８と第１電極、第２電極及び接地電極を備えている。透明フィルム１２は、導体軸１１、つまり中心軸の周りに巻回され、中心軸に垂直な断面における形状が渦巻状である。スペーサ１８によって、透明フィルム１２の所定の周とその外側の周との間に配置されて所定の周と外側の周にある透明フィルム１２の間に隙間が設けられる。スペーサ１８による隙間で、中心軸に垂直な断面における形状が渦巻状であって中心軸に沿って延びる流路２が形成される。第１電極、第２電極及び接地電極は透明フィルム１２上に形成されており、これら電極に高周波電圧が印加されることによって流路２を流れる流体内で誘電泳動が生じる。【選択図】図１１