Hirotaka Sato

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We demonstrated the remote control of insects in free flight via an implantable radio-equipped miniature neural stimulating system. The pronotum mounted system consisted of neural stimulators, muscular stimulators, a radio transceiver-equipped microcontroller and a microbattery. Flight initiation, cessation and elevation control were accomplished through(More)
BACKGROUND The glycoproteins on the cell surface are altered during apoptosis and play an important role in phagocytic clearance of apoptotic cells. METHODS We classified Jurkat cells treated with etoposide as viable and early apoptotic cells, late apoptotic cells or secondary necrotic cells based on propidium iodide staining and scattered grams and(More)
We present an implantable flight control microsystem for a cyborg beetle (Fig. 1). The system consists of multiple inserted neural and muscular stimulators, a visual stimulator, a polyimide assembly and a microcontroller. The system is powered by two size 5 cochlear microbatteries. The insect platform is Cotinis texana, a 2 cm long, 1 2 gram Green June(More)
The continuing miniaturization of digital circuits and the development of low power radio systems coupled with continuing studies into the neurophysiology and dynamics of insect flight are enabling a new class of implantable interfaces capable of controlling insects in free flight for extended periods. We provide context for these developments, review the(More)
A thermodynamic sorption model and a diffusion model based on electric double layer (EDL) theory are integrated to yield a surface chemical model that treats porewater chemistry, surface reactions, and the influence of charged pore walls on diffusing ions in a consistent fashion. The relative contribution of Stern and diffuse layer to the compensation of(More)
In this study, a biological microactuator was demonstrated by closed-loop motion control of the front leg of an insect (Mecynorrhina torquata, beetle) via electrical stimulation of the leg muscles. The three antagonistic pairs of muscle groups in the front leg enabled the actuator to have three degrees of freedom: protraction/retraction,(More)
A photoassisted anodization process to fabricate arrays of uniform and straight macropores at selected areas of a Si wafer surface was developed. The front- and backside surfaces of n-type Si(100) wafers were coated with a thin Si(3)N(4) layer, and the frontside layer was micro-patterned using photolithography and reactive ion etching to form an array of(More)
This paper proposes a new adaptive WBT (Web Based Training) environment for collaborative learning named COALE: Collaborative and Adaptive Learning Environment. COALE is an integrated environment of collaborative learning into individual learning based WBT with Active Personalized Awareness Provider. We propose a personalized active recommendation system,(More)
We present several important advances on the flight-control microsystem for a cyborg beetle presented recently [1]. Giant beetles (Mecynorhina torquata) were employed to achieve larger payloads than the previously used Cotinis texana beetles. A new turning control method based on direct neural stimulation of the optic lobes (compound eyes) was achieved as(More)
We previously reported that, in Jurkat human T cells, the topoisomerase II inhibitor etoposide enhances sialidase activity and reduces cell surface sialic acid levels at an early stage of apoptosis and that the decreases in sialic acid are suppressed by the sialidase inhibitor 2,3-dehydro-2-deoxy-N-acetylneuraminic acid [Azuma Y., et al., Glycoconj. J., 17,(More)