A5102944303- Aerosol Filtration and Electrostatic Precipitation
- Electrohydrodynamics and Fluid Dynamics
- Microfluidic and Capillary Electrophoresis Applications
- Engineering Applied Research
- Hydraulic and Pneumatic Systems
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Power Transformer Diagnostics and Insulation
- Water Quality Monitoring Technologies
- Oral and gingival health research
- Electrowetting and Microfluidic Technologies
- Oral Health Pathology and Treatment
- Advanced Chemical Sensor Technologies
- Indoor and Outdoor Localization Technologies
- Micro and Nano Robotics
- Autoimmune Bullous Skin Diseases
- Diamond and Carbon-based Materials Research
- Microfluidic and Bio-sensing Technologies
- Fuel Cells and Related Materials
- Plant Growth and Agriculture Techniques
- Soft Robotics and Applications
- Molecular Communication and Nanonetworks
- Dust and Plasma Wave Phenomena
- Power Line Inspection Robots
Kyushu University
2018-2022
Shibaura Institute of Technology
2016-2018
Sophia University
2014
Sendai National College of Technology
2006
Sendai University
2005
Kyushu Institute of Technology
2000
Wakayama Prefectural Tanabe High School
1993
Significance The last two decades have seen an exciting development in the field of active turbulence microswimmers and their control using geometric design. While being recognized as a key feature turbulence, collective effects chiral matter been overlooked. We shed light on poorly understood interplay between individual swimming axisymmetric boundary conditions mediated by polar alignment exhibiting controlling bacterial vortices. geometry-independent motion that appears near boundary,...
Abstract The previously reported gel and polymer actuators require external inputs, such as batteries, circuits, electronic etc., compared with autonomous motions produced by the living organisms. To realize spontaneous motions, here, we propose to integrate a power supply, actuators, control into single-component self-oscillating hydrogel. We demonstrate self-actuating pumps driven oscillatory Belousov–Zhabotinsky (BZ) reaction without components. have developed volume oscillation of gels...
In this study, we have developed a microfluidic pump that utilizes the electrohydrodynamic (EHD) conduction of working fluid. Ring-shaped pumps been used in previous studies on EHD conduction, but these require three-dimensional arrangement electrode pairs, which makes it difficult to downsize apparatus. Here, propose mechanism achieve one-way fluid flow microchannels by arranging non-parallel electrodes plane generate an asymmetric electric field. One advantage design is can be easily and...
Abstract Takotsubo syndrome (TTS), also referred to as stress cardiomyopathy, is characterized by transient left ventricular apical ballooning in the absence of obstructive coronary artery disease. Catecholamine‐induced cardiac injury or vasospasm has been implicated this pathophysiology. We present a case 67‐year‐old man 10 years after heart transplantation diagnosed with TTS. Sympathetic reinnervation could not be detected iodine‐123 meta iodobenzylguanidine uptake, suggesting that TTS can...
The importance of actuators that can be integrated with flexible robot structures and mechanisms has increased in recent years the advance soft robotics. In particular, electrohydrodynamic (EHD) actuators, which have expandable integrability to adapt motion robots, received much attention field Studies deepened understanding steady states EHD phenomena but nonsteady are not well understood. We herein observe development process fluid a microchannel adopting Schlieren technique aid high-speed...
The magnetic and dielectric properties under high fields are studied in the single crystal of Cu3Mo2O9. This multiferroic compound has distorted tetrahedral spin chains. effects quasi-one dimensionality geometrical frustration expected to appear simultaneously. We measure magnetoelectric current differential magnetization pulsed field up 74 T. also electric polarization versus curve/loop static 23 Dielectric change at where jumps observed curve. Moreover, plateaus found fields.
The authors have proposed, in the previous report, counter-rotational type machine for hydroelectric power generation. Continuously, hydraulic performance of counter-rotating runners is discussed this report. variable speed/head and discharge characteristics satisfy similarity laws, rotational speed individual runner increases respectively proportion to that can be predicted theoretically under counter-balanced condition angular momentum change through runners. These behaviors cause...
We have successfully developed a concatenated micro pump based on conductive ElectroHydroDynamics (EHD) that is easy to fabricate and embeds channel. An advantage of this the capability increasing pressure without any machinery part vibrations. The generated can be controlled by means applied voltage. EHD suitable for small products.
In order to simplify and automate the microinjection process, we propose a new chip for 100-to 150-µm-size spherical cells, which integrates novel rack-pinion loader previously developed bubble injector.Microinjection has always been backbone of intracellular cargo delivery owing its reliability applications ranging from gene injection drug delivery.Unfortunately, conventional method is no longer sufficient as it requires highly skilled operators time-consuming.To solve these problems,...
Mise au point d'une graisse a faible coefficient de frottement et limitant la corrosion sous contraintes. Application des joints homocinetiques paliers roues
We investigated the effects of program design on 400-m sprint time by applying a Rating Perceived Exertion (RPE) mathematical model to training performance. The subject was 24 years old and had been for 9 years. His best performance in competitions 45.50 seconds. Body weight, resting heart rate, RPE were monitored daily after sessions. Similarly, races recorded times during 2003. At World Championships Athletics France, subject's team placed eighth 1,600-m relay. able predict changes Rate...
We present a novel microinjection chip, which combines pinion-rack cell loader and 3-dimensional bubble injector probe, in order to increase the efficiency of simplify it. The features powerful interaction with magnets, capable lifting as much 20 grams 400mT strong magnet. Additionally, is easy use while also being reliable doing microinjections. Consequently, not only that can work under harsh conditions, it does so maintaining high throughput up 16 gel beads (as model cells) per minutes....
We present the muon spin relaxation/rotation spectra in multiferroic compound (Cu,Zn) 3 Mo 2 O 9 .The parent material Cu has a phase below T N = 8.0 K, where canted antiferromagnetism and ferroelectricity coexist.The asymmetry time taken at RIKEN-RAL pulsed facility show drastic change .At low temperatures weakly beating oscillation caused by static internal magnetic fields antiferromagnetic was observed lightly (0.5%) Zn-doped sample.From fitting of oscillating term, we obtain order...
For the present study, local temperature controlled micro-fluidic channel to culture cells was fabricated and evaluated. Inverted microscope is widely used observe adherent such-as time-lapse images for long time. On-chip transparent micro-electrode (ITO) as heater promising method with control. Thermo-sensitive gel also employed immobilize obtain positioning of control by fine Au sensor prevent from excessive rising. By using feedback control, it keeps steady applied voltage DC power supply...
For the present study, local temperature controlled micro-fluidic channel to culture cells was fabricated and evaluated. Inverted microscope is widely used observed such-as time-lapse images for long time. On-chip transparent micro-electrode (ITO) as heater promising method observe with control. Thermo-sensitive gel also employed immobilize obtain positioning of control by fine Au sensor prevent from excessive rise. This study has potential contribute response provide new cellular functions.
臨床的に正常歯肉と判定し, 光顕で病理組織的に初期歯肉炎とみとめた成人 (20歳～54歳) の辺縁歯肉を, 電子顕微鏡的に観察した。観察は上皮付着部を歯冠側から根尖側の尖端部にわたって行い, その結果次の様な所見を得た。(1) 歯肉溝中央より歯冠側のエナメル質表面には, cuticle に接して上皮細胞がわずかに存在した。cuticle と上皮細胞との間は, 電子密度の低い一層で隔てられ, 両者にはしばしば hemi-desmosome による接合をみとめた。(2) セメント質部の は, 根尖側にゆくにしたがってその厚さを減じ, 付着上皮の根尖側最尖端の上皮細胞とセメント質との接触部には をみとめなかった。(3) セメント質表面の 15例中4例にその厚さに不均衡をみとめた。わずかに厚さの不均衡な, 内部に空胞をもった はエナメル質, セメント質双方にみとめた。(4) 付着上皮の根尖側最尖端の上皮細胞は, 一層または数層からなっていた。それらの細胞形態は, 楕円, サイコロ型から扁平化したものまで認められたが, いずれも根尖方向へ扁平化しつつ移動する状態を示していた。(5)...
We develop a microfluidic pump which is driven by electrohydrodynamic (EHD) conduction pumping. Ring-shaped pumps were conducted in previous researches on EHD conduction, and they require 3D shapes of electrode pairs. It difficult for them to miniaturize the devices. Herein we propose novel fluidic mechanism obtain one-directional flow micro-channels with non-parallel electrodes induce an asymmetric electric field. One advantages that design can be easily precisely fabricated using...
Micro-lenses of small mechanical elements are used for image pickup devices and displays, finer lenses required to improve their performance. Several researches have been conducted on liquid driven micro-lenses provide variable focus various lens functions. However, it is anticipated that there a limit miniaturization when under hydraulically powered. Therefore, in this research, we aim develop compact with focal length combining our simple micro EHD pump which developed the past. We found...
For this study, a novel micro-magnetic tag was proposed and fabricated with low cost targeting to tracing living bodies establish system for reading identification within short time under wet environment. that purpose, we evaluated various magnetic materials using MEMS technology such as photolithography. As result, it found the material is suitable sensing rather than diamagnetic in terms of susceptibility. A sensor magneto-optical (MO) employed high throughput by 2D data. Moreover,...