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To date, research and development to detect the leukemia is proceeding by using the dielectrophoresis which is a phenomenon that the particle is moved by the slope of the electric field. Compared with the traditional leukemia detection systems, this system using the dielectrophoresis is more attractive because of low cost, fast detection, and easy operation. With this in mind, the high frequency characteristics...
On behalf of the Honorary Chair of the 6th INTERNATIONAL CONFERENCE ON ELECTRONICS, COMPUTERS AND ARTIFICIAL INTELLIGENCE (ECAI 2014), it is my great pleasure and honor to give a Welcome Message.
Dielctrophoresis (DEP) is a movement of particles in medium by a force, which is generated in non-uniform electric fields. The Dielectrophoretic force (DEP force) depends on the geometry of an electrode. In this paper, the design and the simulation of the ceiling electrode to separate biological cells by using positive dielectrophoresis and inclined gravity are presented. The positive DEP force which...
Dielectrophoresis (DEP) is the motion of a matter caused by polarization effects in a non-uniform electric field. We have been studying to measure dielectrophretic force (DEP force) generated on a small particle by equipment which we developed [1][2][3]. For calculating the DEP force, the mass density of the target particle in the DEP device is necessary. In this paper, we propose to measure the mass...
In this paper, we present the methods of the particle separation by employing dielectrophoresis (DEP) and traveling-wave electroosmosis (TWEO). When particles are on a plane electrode, the particles do not experience the DEP force. Because the electric field at surface of the plane electrode is zero. Thus it is necessary to transport all particles from the entire chamber to the electrode gap, where...
To investigate the effect of focal brain cooling on seizure, spectral analysis of electroencephalography (EEG) was performed in anesthetized rats intracortically injected with penicillin G potassium. Penicillin G induced epileptic discharges (EDs) and increased high frequency EEG bands. Use of a cooling device suppressed EDs with an effect that depended on the brain temperature. Fast Fourier Transform...
Focal cooling of the brain has the potential to terminate epileptic discharges. Therefore, in the present report, we review our past studies and discuss the future perspectives of brain cooling as a potential therapy for intractable epilepsy. The experiments were performed on Sprague-Dawley rats under halothane anesthesia. After craniotomy, the cooling device (Peltier chip) was placed on the cortical...
Focal brain cooling is under investigation in clinical trials of drug resistant epilepsy. This method has been studied intensively in rodents, but more evidence from large animal studies is required. To provide evidence that focal brain cooling is a safe and effective therapeutic intervention for intractable focal epilepsy, we investigated the placement of a newly-developed cooling device over the...
We propose a subdural electrode array guided by a 0.3mm-diameter shape memory alloy guidewire for a minimally-invasive method of electrocorticogram recording. The measured electric characteristics showed that the proposed electrodes are compatible with the application of electrocorticogram recording. Somatosensory evoked potential was measured by the proposed method in the animal test in vivo. The...
The realization of minimally invasive epilepsy surgery treatment, our goal, needs the accurate excision of the focus in a minimally invasive way. We think that one of the best ways to achieve this is cryosurgery. However, cryosurgery is not applied to epilepsy and the effect of cryosurgery on brain tissue is not well known. In this paper, we investigated the effects of freezing brain tissue on the...
In this paper, we propose a personal identification by sole pressure change. We obtain sole pressure change of multiple steps by using two pressure sensor sheets. Each pressure sensor sheet is inserted into each shoe as an inner sock. Then, we extract characteristics of sole pressure change from the obtained data. We make template data of both feet from the extracted characteristics. We propose a...
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