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Ryo Sase, Akio Yamamoto, Toshiro Higuchi
Session ID: L37
Published: 2011
Released on J-STAGE: September 01, 2011
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Hiroyuki Takagi, Toshiro Okazaki, Ken Sasaki
Session ID: L38
Published: 2011
Released on J-STAGE: September 01, 2011
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The generation of a control signal by a difference
Tatsu Aoki
Session ID: L39
Published: 2011
Released on J-STAGE: September 01, 2011
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In the embedded mechatronic system, fixed-point microprocessors with the short word length are used from making energy, space, and cost saving. The mechanisms are controlled by the quantized controller output in fixedpoint arithmetic. Therefore, the minute control cannot be achieved for the short word length. Thus, in this paper the new control methodology that decreases the quantization step of the controller output is proposed. The methodology is based on the principle of the PWM by using zero-order hold with the multirate sampling. Furthermore, the effectiveness of the proposed method is verified by simulations.
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Xuchu Zhu, Hiroshi Yoshida, Satoshi Kawasaki, Hiroshi Hosaka
Session ID: L40
Published: 2011
Released on J-STAGE: September 01, 2011
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his paper presents an algorithm to detect whether the target is at the status of moving or stop. This is used for low-cost and power-saving positioning systems. The algorism finds the threshold of moving or stop status based on the probabilistically highest accuracy judgment. Then a circuit board has been developed to realize this algorithm in real-time. In this design, a low-cost, low power consuming micro-controller has been evaluated.
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Yuta Kondo, Hidetake Tanaka, Naoki Asakawa
Session ID: L44
Published: 2011
Released on J-STAGE: September 01, 2011
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Yuichiro Tanaka, Takashi Ishigami
Session ID: L45
Published: 2011
Released on J-STAGE: September 01, 2011
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Kouichi Kumagai, Shinya Ina, Sumitaka Terasaka, Kazuyuki Mitui, Kouzi ...
Session ID: L46
Published: 2011
Released on J-STAGE: September 01, 2011
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Electro-rheological fluid (ER Fluid) is a kind of functional fluid whose apparent viscoelastic properties are able to change by applying high voltage electric field. We made the ER fluid a rubber-shaped seat. That seat has the force attracting the electrode when a high voltage is applied by the electrode sandwiching the sheet. Then we named that sheet the Electro-Atractive Material (EAM). We have found a property of the EAM which can control the shear resistance occurring, between the electrode and the EAM, by the force attracting electrode. And we developed the EAM brake device, which can control its breaking force by the intensity of applied voltage, using that property of the EAM.
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Hiroaki Matsuoka, Saneyuki Takizawa, Hiroaki Seki, Yoshitsugu Kamiya
Session ID: L47
Published: 2011
Released on J-STAGE: September 01, 2011
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From Piezoelectric Actuator to Piezo-electric jerk meter and Gyro sensors
Michihiko Tanaka, Seiki Kuroiwa
Session ID: M01
Published: 2011
Released on J-STAGE: September 01, 2011
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This paper presents how to understand the mechanical behavior of Piezo electric structures from view points of structural analysis, dynamics and electro-technics. The development of one and two dimensional theories is pursued for dynamic behavior of piezo-electric structures. Although the direct piezoelectric effects excited by voltage source are well known, there are many unsolved problems concerning the effect of piezoelectric ceramics subjected mechanical stress. This paper compares these two effects of piezoelectric ceramic and gives review on piezoelectric actuation and sensing. This paper also shows the scientifically correct method of jerk detection by using piezoelectric accelerator.
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Gaku Isobe, Ryo Ageba, Takafumi Maeda, Peter Bornmann, Tobias Hemsel, ...
Session ID: M02
Published: 2011
Released on J-STAGE: September 01, 2011
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Ultrasonic Assisted HydroThermal Method (UAHTM) is useful for synthesis of piezoelectric films and lead-free piezoelectric materials. To generate powerful and stable ultrasonic irradiation at high temperature on UAHTM, we developed a transducer that was composed of LiNbO3 single crystals. To assemble these LiNbO3 rings, a jig was prepared, and a bolt-tightened Langevin-type transducer was fabricated. By comparing to the PZT transducer, it was confirmed that the LiNbO3 type transducer was effective at high temperature conditions. Using the transducer, we have successfully synthesized PZT film on Ti substrate by UAHTM.
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Yoichi Kadota, Hiroshi Hosaka, Takeshi Morita
Session ID: M03
Published: 2011
Released on J-STAGE: September 01, 2011
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Hideyuki Ikeda, Takeshi Morita
Session ID: M04
Published: 2011
Released on J-STAGE: September 01, 2011
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The second report Detailed study of the load current and the displacement estimation
Yuki Itatsu, Akiteru Ueda, Akihiro Torii
Session ID: M05
Published: 2011
Released on J-STAGE: September 01, 2011
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Satoshi Kengaku, Akiteru Ueda, Akihiro Torii
Session ID: M07
Published: 2011
Released on J-STAGE: September 01, 2011
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Prototype Development and Basic Performance
Masahiro Shinoda, Shinnosuke Hirata, Yuuka Irie, Hisayuki Aoyama
Session ID: M08
Published: 2011
Released on J-STAGE: September 01, 2011
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Shinnosuke Hirata, Kazuki Hirose, Yuuka Irie, Hisayuki Aoyama
Session ID: M09
Published: 2011
Released on J-STAGE: September 01, 2011
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The experimental consideration of transfer and positioning
Ryuto Yano, Manabu Aoyagi, Hideki Tamura, Takehiro Takano
Session ID: M13
Published: 2011
Released on J-STAGE: September 01, 2011
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Trial hybrid composition with electromagnetic motor
Ryota Okeya, Manabu Aoyagi, Takehiro Takano, Hideki Tamura
Session ID: M14
Published: 2011
Released on J-STAGE: September 01, 2011
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Daisuke Yamaguchi, Takefumi Kanda, Kouichi Suzumori
Session ID: M15
Published: 2011
Released on J-STAGE: September 01, 2011
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In the advanced scientific research area, there is a demand for actuator which can operate at cryo temperature. In this study, a cryo ultrasonic motor using a bolt-clamped Langevin-type transducer (BLT) has been fabricated and evaluated. The effect of the pre-load of the BLT at cryo temperature has been estimated by using finite element method, and BLT has been designed. The effect of contact pressure between the rotor and the transducer under a cryo temperature condition has been evaluated experimentally. Additionally, we have succeeded in driving the motor in a helium gas at 4.5K.
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Takehiro Takano, Hideki Tamura, Manabu Aoyagi, Yoshiro Tomikawa
Session ID: M16
Published: 2011
Released on J-STAGE: September 01, 2011
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Takefumi Kanda, Yoshiyuki Tominaga, Takuya Harada, Koichi Suzumori, Ts ...
Session ID: M18
Published: 2011
Released on J-STAGE: September 01, 2011
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Koutarou Ohuchi, Kazuyoshi Tsuchiya, Yasutomo Uetsuji
Session ID: M19
Published: 2011
Released on J-STAGE: September 01, 2011
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Part2 Measurement of Horizontal Direction Restoring Force
Shota Chino, Yasuhiro Kato, Masaya Takasaki, Takeshi Mizuno, Yuji Ishi ...
Session ID: M20
Published: 2011
Released on J-STAGE: September 01, 2011
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In near-field levitation, an object can be levitated vertically upward above vibrating surface of an ultrasonic transducer. On the other hand, it is reported that an object can be suspended vertically downward under the vibrating surface in the air. This phenomenon called the acoustic downward suspension. When an object is suspended, there is restoring force, which attracts the object to the center of the vibrating surface. The force characteristics were investigated experimentally. A servo type measuring mechanism was composed which can measure vertical and horizontal direction force simultaneously. This paper reports the relationship between acting force and center distance between the vibrating surface and suspended object.
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Youhei Ishigami, Masanori Okano
Session ID: M21
Published: 2011
Released on J-STAGE: September 01, 2011
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In surface acoustic wave atomizer, the liquid can be easily atomized by using the vibration on the substrate. However, enough energy is necessary to atomize for the liquid to be moved by the wave, when the liquid is set on the substrate. We decreased the driving power to about 1/3 by maintaining the liquid in the small gap on the substrate using surface tension of small gap.
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Hitoshi Ohmori, Masayoshi Mizutani, Shinsuke Kunimura, Yosuke Hachisu, ...
Session ID: M32
Published: 2011
Released on J-STAGE: September 01, 2011
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Yuya Yano, Arata Fukasawa, Shinjiro Umezu, Yoshihito Kunugi, Akihiko A ...
Session ID: M33
Published: 2011
Released on J-STAGE: September 01, 2011
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Yosuke Hachisu, Yoshihiro Uehara, Naoki Tone, Hitoshi Ohomori, Yoshiyu ...
Session ID: M34
Published: 2011
Released on J-STAGE: September 01, 2011
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We manufactured double-sided fresnel lens of 1.5m diameter by the ultra-precision cutting in JEM-EUSO project.As a result,we successful to fabricate a 1.5m diameter fresnel lens with less than 20nmRMS of surface roughness.Moreover, We has been trying to fabricate diffractive structures and has achieved the required accuracy with a large double-sides flat Fresnel lenses. In this paper, we manufactured double-sided flat fresnel lens of 1.5m diameter by the ultra-precision cutting.
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Shinsuke Kunimura, Hitoshi Ohmori
Session ID: M35
Published: 2011
Released on J-STAGE: September 01, 2011
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1stReport: Modeling of ELID Grinding Wheel
Nobuhide Itoh, Kazuya Taki, Akihiko Nemoto, Hitoshi Ohmori, Teruko Kat ...
Session ID: M37
Published: 2011
Released on J-STAGE: September 01, 2011
CONFERENCE PROCEEDINGS
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Nobuhide Itoh, Shouta Kobayashi, Akihiko Nemoto, Teruko Kato, Goroh It ...
Session ID: M38
Published: 2011
Released on J-STAGE: September 01, 2011
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Akihiko Nemoto, Nobuhide Itoh, Teruko Katoh, Hitoshi Ohmori, Yi Allen
Session ID: M39
Published: 2011
Released on J-STAGE: September 01, 2011
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Wenzhuo Ma, Kazuhiro Nakamura, Bo Zhang, Toshifumi Mawatari, Akira Nak ...
Session ID: M43
Published: 2011
Released on J-STAGE: September 01, 2011
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The metal bond diamond grinding wheel is very capable of precise grinding of ceramic material for its high wear resistance and profile persistance, but it also suffers from the difficulty of dressing. One of the most successful in-process dressing technologies was ELID. However, the mechanism of ELID still remains unclear. Simulation experiments using a ball-on-disk test rig in conjunction with electrolyzing were conducted. Experimental results showing some insight of ELID were obtained.
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Hiroshi Kasuga, Teruko Kato, Nobuhide Itoh, Yutaka Kameyama, Hitoshi O ...
Session ID: M44
Published: 2011
Released on J-STAGE: September 01, 2011
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Mihoshi Hamada, Jun Komotori, Masayoshi Mizutani, Kazutoshi Katahira, ...
Session ID: M45
Published: 2011
Released on J-STAGE: September 01, 2011
CONFERENCE PROCEEDINGS
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Jun Shimizu, Wataru Ohsone, Takeyuki Yamamoto, Hirotaka Ojima, Teppei ...
Session ID: N01
Published: 2011
Released on J-STAGE: September 01, 2011
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The MEMS technology for various nano/micro devices often requires special facilities and multistage processes, thus the fabrication cost is extremely high. Therefore, alternative methods that are more concise, economic and precise patterns need to be developed. Nanoimprint lithography is one of the potential methods. This research aimed to fabricate nanoscale basic structures on silicon substrates using nanoscratching, which can be potentially used to make nano/micro molds for nanoimprint lithography. In this report, various nano/micro-scale structures, such as groove and layer structures were generated on the silicon substrate using an atomic force microscope equipped with a sharp monocrystalline diamond probe. The nanoimprint experiment was also performed using the fabricated single-layer mold to fabricate single island structure on silicon-resin.
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Influence of imprint pressure on replication/transfer mechanism
Kojin Narita, Nobuyuki Moronuki, Yasuhiro Tanaka, Arata Kaneko
Session ID: N02
Published: 2011
Released on J-STAGE: September 01, 2011
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Close-packed structures of fine particles can be self-assembled by dip coating with suspension that contains particles. By using imprinting process, the assembly profile can be replicated or the particles themselves can be transferred to another substrate. This study aims to clarify the effects of imprinting pressure on imprinting process with UV curing resin. It was found that the replication rate that shows the depth/width of replicated profile or transferred rate that shows the depth/width of buried in resin can be changed by the imprinting pressure as well as homogeneity of the structure.
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Fabrication of Ni Microneedle Array as Imprint Tool
Satoshi Yukizono, Jumpei Yoshida, Moeto Nagai, Takahiro Kawashima, Tak ...
Session ID: N03
Published: 2011
Released on J-STAGE: September 01, 2011
CONFERENCE PROCEEDINGS
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Ryosuke Matsuzaki, Takuya Suzuki, Akira Todoroki, Yoshihiro Mizutani
Session ID: N04
Published: 2011
Released on J-STAGE: September 01, 2011
CONFERENCE PROCEEDINGS
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Hiromasa Itto, Toshihiro Takahashi, Tsuneyuki Kobayashi, Hiroshi Saito
Session ID: N06
Published: 2011
Released on J-STAGE: September 01, 2011
CONFERENCE PROCEEDINGS
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Micro cutting in Scanning Electron Microscope
Mamoru Koshiba, Noboru Morita, Shigeru Yamada, Noboru Takano
Session ID: N07
Published: 2011
Released on J-STAGE: September 01, 2011
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Kouichi NISHINAKA, Hidetake TANAKA, Kazuhisa YANAGI
Session ID: N08
Published: 2011
Released on J-STAGE: September 01, 2011
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The Effect of Relief Face on Orthogonal Cutting of Soft Rubber
Katsunori Yamaoka, Noboru Morita, Rei Yamamoto
Session ID: N09
Published: 2011
Released on J-STAGE: September 01, 2011
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Reo Kometani, Shinichi Warisawa, Sunao Ishihara
Session ID: N13
Published: 2011
Released on J-STAGE: September 01, 2011
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Yuki Murao, Sunao Ishihara, Shinichi Warisawa, Reo Kometani
Session ID: N14
Published: 2011
Released on J-STAGE: September 01, 2011
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Takuya Toyonaga, Humiya Imanishi, Hikaru Terauchi, Jianguo Zhang, Sada ...
Session ID: N15
Published: 2011
Released on J-STAGE: September 01, 2011
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The ion beam has been applied as a tool to fabricate micro-nano structures in lithography and sputtering process. The recent studies have shown that a swelling structure can be fabricated on a crystal surface by ion-beam irradiation with relatively low fluence caused by an irradiation-induced amorphousization. Increasing the fluence, the sputtering process becomes dominant and target atoms at the surface are removed to form a cave structure. In order to apply the swelling effect to fabrication process, it is required to confirm the controllability of the swelling height and to observe the transitional feature from the swelling to the cave structure. For that purpose, we have fabricated the swelling or cave structure on Si crystal by irradiating Ar ion. In this report, the relation between the height or depth of those structures and the fluence of Ar ion will be shown.
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Masaki Otani, Junichi Uchikoshi, Kentaro Tsukamoto, Takabumi Nagai, Ke ...
Session ID: N16
Published: 2011
Released on J-STAGE: September 01, 2011
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Application of Mechanical Vibratory Stimuli to Cultured Cells
Yuhei Yamada, Hideaki Otake, Takahiro Kawashima, Moeto Nagai, Takayuki ...
Session ID: N18
Published: 2011
Released on J-STAGE: September 01, 2011
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Eita Watanabe, Shinya Ariyasu, Kengo Hanaya, Shin Aoki, Toshihiro Suzu ...
Session ID: N19
Published: 2011
Released on J-STAGE: September 01, 2011
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Adhesion of organic material on channel walls is problematic in micro bio devices. There are many studies to inhibit adhesion of cells or to utilize specific adsorption such as antigen-antibody reaction. However, there are not many quantitative data on such adhesion. In this study, we prepared a simple microfluidic channel where laminar flow can be kept. In the channel, adherent cells on channel walls were stripped off by buffer solution flow. From the velocity of the solution flow, adhesive forces were estimated. Several substrates with different surface treatment were prepared, and Deep-RIE machined substrate surfaces showed smaller adhesive force compared to mirror polished surfaces.
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Manabu Nishio, Nobuyuki Moronuki, Yasuhiro Tanaka, Arata Kaneko
Session ID: N20
Published: 2011
Released on J-STAGE: September 01, 2011
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Self-assembled fine particles have wide surface area and thus can improve the sensitivity of biochemical sensors that utilizes surface reaction. This study aims to improve the sensitivity of such sensors by assembling particles on optical element. Firstly, we clarified the problems in self-assembly of silica fine particles on the optical element surface with dip-coating method. Then, the particles on optical element were modified with protein to promote antibody-antigen reaction. Then we made clear the effect of the assembly profile and the characteristic of the optics element on the sensitivity.
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Norito Keyaki, Yasuhiro Tanaka, Nobuyuki Moronuki, Arata Kaneko, Manab ...
Session ID: N21
Published: 2011
Released on J-STAGE: September 01, 2011
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Sensitivity of immunoassay that is one of the biochemical analyses can be increased by increasing surface area for detection. In this study, microstructured surface was fabricated by etching Si substrate with the mask of self-assembled silica particles of which diameter was 1μm. Immunoassay test was carried out on the fabricated microstructured surface and fluorescent intensity was measured. It was found that there is a strong relationship between the surface areas geometrically calculated from SEM observation and observed fluorescent intensity. The intensity was increased up to 250%.
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