Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351948
Y. Matsuno, M. Nakajima, M. Kojima, Y. Tanaka-Takiguchi, K. Takiguchi, K. Nogawa, M. Homma, T. Fukuda
This paper presents the evaluation of ultra-minimal spout amount from micro-nano pipettes into phospholipid-coated micro-droplets. The pipettes can be used to control the local environment around/inside single cells. Conventionally, the microinjection with pipette has been conducted by air pressures. In this method, the spout of high viscosity solutions is difficult because of the frictional forces between the surface of a pipette and a solution. It is also needed to evaluate the spout amount quantitatively. On the other hand, the research about artificial cell model has been actively conducted, injecting various biological samples into liposomes which are vesicle of lipid bilayer membrane. If additional injection of various proteins into liposome is realized with micro/nano pipette, the observation of dynamic reaction of multiple biological samples, which is required for formulation of artificial cell, will become possible. In our research, the spouting method using electro-osmosis is used. The local spouts of the proteins such as GFP and F-actin have been presented experimentally before. In this paper, the amount of spout solution in this method is quantitatively evaluated by injection of fluorescent solution into a phospholipid-coated micro-droplet.
{"title":"Pico-liter injection control to individual nano-liter solution coated by lipid layer","authors":"Y. Matsuno, M. Nakajima, M. Kojima, Y. Tanaka-Takiguchi, K. Takiguchi, K. Nogawa, M. Homma, T. Fukuda","doi":"10.1109/MHS.2009.5351948","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351948","url":null,"abstract":"This paper presents the evaluation of ultra-minimal spout amount from micro-nano pipettes into phospholipid-coated micro-droplets. The pipettes can be used to control the local environment around/inside single cells. Conventionally, the microinjection with pipette has been conducted by air pressures. In this method, the spout of high viscosity solutions is difficult because of the frictional forces between the surface of a pipette and a solution. It is also needed to evaluate the spout amount quantitatively. On the other hand, the research about artificial cell model has been actively conducted, injecting various biological samples into liposomes which are vesicle of lipid bilayer membrane. If additional injection of various proteins into liposome is realized with micro/nano pipette, the observation of dynamic reaction of multiple biological samples, which is required for formulation of artificial cell, will become possible. In our research, the spouting method using electro-osmosis is used. The local spouts of the proteins such as GFP and F-actin have been presented experimentally before. In this paper, the amount of spout solution in this method is quantitatively evaluated by injection of fluorescent solution into a phospholipid-coated micro-droplet.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129731761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351885
T. Masuda, H. Maruyama, F. Arai, T. Anada, T. Fukuda, O. Suzuki
Detection of change in microenvironmental pH may be essential for analyzing biological processes, if transitory biodegradable scaffold materials are used for tissue engineering in bone regeneration. In this study, we created a pH indicator immobilized-gel-sheet for pH measurement. By using gel-sheet, we can investigate the local microenvironment of biodegradable materials, such as octacalcium phosphate (OCP), under the various protein adsorptions. The gel-sheet was made of a photocrosslinkable prepolymer solution (TUPR-5), which was easily immobilized by the method that the pH indicator is entrapped in a porous polymeric substrate. Bromothymol Blue (BTB) immobilized-gel-sheet was mounted in a biochip made of polydimethylsiloxane (PDMS) with a flow channel. The pH value was calculated by detecting the color changes, and presented as the pH distribution via a custom-made application. The pH sensing was carried out based on the surrounding color information of an OCP granule if incubated in culture medium. The gel-sheet detected the pH values of the condition around an OCP granule, showing the decrease from pH 7.8 to 8.8. As a whole, the proposed pH indicator is capable of providing pH level by high-spatial resolution.
{"title":"Development of a pH indicator immobilized-gel-sheet for microenviroment analysis","authors":"T. Masuda, H. Maruyama, F. Arai, T. Anada, T. Fukuda, O. Suzuki","doi":"10.1109/MHS.2009.5351885","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351885","url":null,"abstract":"Detection of change in microenvironmental pH may be essential for analyzing biological processes, if transitory biodegradable scaffold materials are used for tissue engineering in bone regeneration. In this study, we created a pH indicator immobilized-gel-sheet for pH measurement. By using gel-sheet, we can investigate the local microenvironment of biodegradable materials, such as octacalcium phosphate (OCP), under the various protein adsorptions. The gel-sheet was made of a photocrosslinkable prepolymer solution (TUPR-5), which was easily immobilized by the method that the pH indicator is entrapped in a porous polymeric substrate. Bromothymol Blue (BTB) immobilized-gel-sheet was mounted in a biochip made of polydimethylsiloxane (PDMS) with a flow channel. The pH value was calculated by detecting the color changes, and presented as the pH distribution via a custom-made application. The pH sensing was carried out based on the surrounding color information of an OCP granule if incubated in culture medium. The gel-sheet detected the pH values of the condition around an OCP granule, showing the decrease from pH 7.8 to 8.8. As a whole, the proposed pH indicator is capable of providing pH level by high-spatial resolution.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131936757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5352101
I. Shimoyama
IRT is a new technological domain created by the integration of Information Technology (IT), which encompasses high-speed computing and network and software technologies, and Robot Technology (RT), whose forms and movements function in the physical world. IT, formed from technologies of the cyber-world, has the power to process information in the real world through communication and computer technologies. It promises to have even more advanced capabilities in the future. RT, formed from the technologies of the physical world, has advanced greatly in reliability and real-world functionality. By integration IT and RT, IRT innovations promise to give birth to industries that support life and society, and to bring about social transformation. One of the killer applications of IRT is a kitchen robot. The robot we have developed has tactile sensors to deal with plates and glasses on a tray and put them into a dishwasher. The tactile sensors are molded by elastic materials with tiny cantilevers in it. Not only tactile sensors but also vision/acoustic sensors are necessary for motion, safety and reliability of household robots. MEMS (MicroElectroMechanical Systems) give tiny/thin sensor arrays which cover a robot as smart skin.
{"title":"MEMS with five senses for IRT","authors":"I. Shimoyama","doi":"10.1109/MHS.2009.5352101","DOIUrl":"https://doi.org/10.1109/MHS.2009.5352101","url":null,"abstract":"IRT is a new technological domain created by the integration of Information Technology (IT), which encompasses high-speed computing and network and software technologies, and Robot Technology (RT), whose forms and movements function in the physical world. IT, formed from technologies of the cyber-world, has the power to process information in the real world through communication and computer technologies. It promises to have even more advanced capabilities in the future. RT, formed from the technologies of the physical world, has advanced greatly in reliability and real-world functionality. By integration IT and RT, IRT innovations promise to give birth to industries that support life and society, and to bring about social transformation. One of the killer applications of IRT is a kitchen robot. The robot we have developed has tactile sensors to deal with plates and glasses on a tray and put them into a dishwasher. The tactile sensors are molded by elastic materials with tiny cantilevers in it. Not only tactile sensors but also vision/acoustic sensors are necessary for motion, safety and reliability of household robots. MEMS (MicroElectroMechanical Systems) give tiny/thin sensor arrays which cover a robot as smart skin.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"354 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134085464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5352098
B. Tang, M. Gosálvez, P. Pal, S. Itoh, H. Hida, M. Shikida, Kazuo Sato
The goal of this article is to study the etching properties as a function of various adsorbed surfactant thickness in wet anisotropic etching process of TMAH solution. The thickness of preferentially adsorbed surfactant molecules on Si{110} and Si{100} has been evaluated by using spectroscopic ellipsometry (SE). The dependence of the etch rate in TMAH and the surface roughness on the layer thickness demonstrates that the surfactant is adsorbed at the interface during etching in TMAH+Triton. A thin pre-adsorbed layer is sufficient to dramatically improve the etching characteristics of silicon.
{"title":"Adsorbed surfactant thickness on: A Si wafer dominating etching properties of TMAH solution","authors":"B. Tang, M. Gosálvez, P. Pal, S. Itoh, H. Hida, M. Shikida, Kazuo Sato","doi":"10.1109/MHS.2009.5352098","DOIUrl":"https://doi.org/10.1109/MHS.2009.5352098","url":null,"abstract":"The goal of this article is to study the etching properties as a function of various adsorbed surfactant thickness in wet anisotropic etching process of TMAH solution. The thickness of preferentially adsorbed surfactant molecules on Si{110} and Si{100} has been evaluated by using spectroscopic ellipsometry (SE). The dependence of the etch rate in TMAH and the surface roughness on the layer thickness demonstrates that the surfactant is adsorbed at the interface during etching in TMAH+Triton. A thin pre-adsorbed layer is sufficient to dramatically improve the etching characteristics of silicon.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129647657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351890
K. Itoga, J. Kobayashi, M. Yamato, T. Okano
We developed the maskless photolithography device by modifying the optical system of an LCD projector and applied to cell micropatterning and fabrication of microchannels. Furthermore, we also developed the second-generation device allows for the fabrication of micropatterns over a larger area (over 50 × 50 mm). The maskless system has the big merit that doesn't need a photomask. However, there are a few problems in the maskless system. One of them is that patterns of segmentalized boundaries with an XY stage get out of shape. It is caused by optical distortion, precision of XY stage and so on. To overcome the defect, we have developed a third-generation device equipped with a more precision XY-stage and invented a method to improve patterns of divided edge by multiphase exposure. We were able to improve patterns of divided edge by the method.
{"title":"Development of the maskless photolithography device with an LCD-projector for fabrication of micropatterned surfaces","authors":"K. Itoga, J. Kobayashi, M. Yamato, T. Okano","doi":"10.1109/MHS.2009.5351890","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351890","url":null,"abstract":"We developed the maskless photolithography device by modifying the optical system of an LCD projector and applied to cell micropatterning and fabrication of microchannels. Furthermore, we also developed the second-generation device allows for the fabrication of micropatterns over a larger area (over 50 × 50 mm). The maskless system has the big merit that doesn't need a photomask. However, there are a few problems in the maskless system. One of them is that patterns of segmentalized boundaries with an XY stage get out of shape. It is caused by optical distortion, precision of XY stage and so on. To overcome the defect, we have developed a third-generation device equipped with a more precision XY-stage and invented a method to improve patterns of divided edge by multiphase exposure. We were able to improve patterns of divided edge by the method.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122745718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351878
T. Mizunuma, Y. Yamanishi, S. Sakuma, H. Maruyama, F. Arai
We succeeded in dispensing micro-droplet by a disposable on-chip inkjet mechanism. Novelty of this paper is summarized as follows. (1) We employed a glass plate bonded Poly-dimethylsiloxane (PDMS) membrane to obtain leaf spring structure whose spring coefficient is 14 times of the conventional PDMS membrane. As a result, we succeeded in dispensing droplets continuously (up to 10 Hz) by vibrating the membrane using the multilayers piezoelectric actuator attached to the PDMS disposable chip. (2) The nozzle for droplet dispensing was fabricated by thick photoresist (SU-8) to obtain the hydrophobic surface which prevents any undesired satellite droplets produced. Consequently the accuracy of position of the droplet dispensing was achieved ± 5 μm. The size of the droplet produced from the disposable nozzle (diameter = 100 μm) was in the range of 95–105 μm at the applied voltage of 105 V.
{"title":"On-chip particle-laden droplet dispensing by disposable inkjet system","authors":"T. Mizunuma, Y. Yamanishi, S. Sakuma, H. Maruyama, F. Arai","doi":"10.1109/MHS.2009.5351878","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351878","url":null,"abstract":"We succeeded in dispensing micro-droplet by a disposable on-chip inkjet mechanism. Novelty of this paper is summarized as follows. (1) We employed a glass plate bonded Poly-dimethylsiloxane (PDMS) membrane to obtain leaf spring structure whose spring coefficient is 14 times of the conventional PDMS membrane. As a result, we succeeded in dispensing droplets continuously (up to 10 Hz) by vibrating the membrane using the multilayers piezoelectric actuator attached to the PDMS disposable chip. (2) The nozzle for droplet dispensing was fabricated by thick photoresist (SU-8) to obtain the hydrophobic surface which prevents any undesired satellite droplets produced. Consequently the accuracy of position of the droplet dispensing was achieved ± 5 μm. The size of the droplet produced from the disposable nozzle (diameter = 100 μm) was in the range of 95–105 μm at the applied voltage of 105 V.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124553712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351879
T. Itoyama, T. Nakano, S. Ikeda, T. Fukuda, T. Matsuda, M. Negoro, F. Arai
To reproduce blood vessel, we proposed new process for fabricating biodegradable scaffold by powder sintering process. In this process, model for molding scaffold was materialized by rapid prototyping. Biodegradable polymer powder and porogen were dusted to model and heated. So, arbitrary shape scaffold would be fabricated. Also, porosity that influences compliance of blood vessel scaffold would be adjusted by changing ratio of the polymer powder and porogen. We studied fabrication condition of blood vessel scaffold by measuring porosity and Young's modulus when the ratio of the polymer powder and porogen was adjusted. Also, HUVECs were cultured on the scaffold, and the scaffold's biocompatibility was confirmed.
{"title":"Fabrication of biodegradable scaffold by powder sintering process","authors":"T. Itoyama, T. Nakano, S. Ikeda, T. Fukuda, T. Matsuda, M. Negoro, F. Arai","doi":"10.1109/MHS.2009.5351879","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351879","url":null,"abstract":"To reproduce blood vessel, we proposed new process for fabricating biodegradable scaffold by powder sintering process. In this process, model for molding scaffold was materialized by rapid prototyping. Biodegradable polymer powder and porogen were dusted to model and heated. So, arbitrary shape scaffold would be fabricated. Also, porosity that influences compliance of blood vessel scaffold would be adjusted by changing ratio of the polymer powder and porogen. We studied fabrication condition of blood vessel scaffold by measuring porosity and Young's modulus when the ratio of the polymer powder and porogen was adjusted. Also, HUVECs were cultured on the scaffold, and the scaffold's biocompatibility was confirmed.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115318067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351986
A. Ito, Hirokazu Akiyama, Yasunori Yamamoto, Y. Kawabe, M. Kamihira
Skeletal muscular tissues were constructed using magnetic force-based tissue engineering (Mag-TE) techniques. Mouse myoblast C2C12 cells labeled with magnetite cationic liposomes (MCLs) were seeded into a well of 24-well ultra-low cell attachment culture plates. When a magnet was positioned underneath the well, cells accumulated evenly onto the culture surface and formed a multilayered cell sheet. Furthermore, because an angiogenic potential of transplants is considered to be important for the long-term maintenance of cell survival and tissue functions, a vascular endothelial growth factor (VEGF) gene-modified C2C12 (C2C12/VEGF) cell sheets were also fabricated by the Mag-TE technique. The secretion level of C2C12/VEGF sheets was 3.0 ng/day, indicating that VEGF gene-expressing cell sheets were successfully fabricated. Since the shape of artificial tissue constructs can be controlled by magnetic force, a cellular string-like assembly was formed by placing a linear-shaped magnetic field concentrator with a magnet. These cellular sheets and strings shrank and did not maintain their shapes for an additional in vitro culture period during myogenic differentiation. On the other hand, when a silicone plug was positioned at the center of well during the fabrication of cell sheets, the cell sheets shrank and formed a ring-like assembly around the plug. After 6-d cultivation of cell rings in differentiation medium, the C2C12 cells differentiated to form multinucleated myotubes. Thus, these procedures can provide a novel strategy for skeletal muscular tissue engineering.
{"title":"Skeletal muscle tissue engineering using functional magnetite nanoparticles","authors":"A. Ito, Hirokazu Akiyama, Yasunori Yamamoto, Y. Kawabe, M. Kamihira","doi":"10.1109/MHS.2009.5351986","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351986","url":null,"abstract":"Skeletal muscular tissues were constructed using magnetic force-based tissue engineering (Mag-TE) techniques. Mouse myoblast C2C12 cells labeled with magnetite cationic liposomes (MCLs) were seeded into a well of 24-well ultra-low cell attachment culture plates. When a magnet was positioned underneath the well, cells accumulated evenly onto the culture surface and formed a multilayered cell sheet. Furthermore, because an angiogenic potential of transplants is considered to be important for the long-term maintenance of cell survival and tissue functions, a vascular endothelial growth factor (VEGF) gene-modified C2C12 (C2C12/VEGF) cell sheets were also fabricated by the Mag-TE technique. The secretion level of C2C12/VEGF sheets was 3.0 ng/day, indicating that VEGF gene-expressing cell sheets were successfully fabricated. Since the shape of artificial tissue constructs can be controlled by magnetic force, a cellular string-like assembly was formed by placing a linear-shaped magnetic field concentrator with a magnet. These cellular sheets and strings shrank and did not maintain their shapes for an additional in vitro culture period during myogenic differentiation. On the other hand, when a silicone plug was positioned at the center of well during the fabrication of cell sheets, the cell sheets shrank and formed a ring-like assembly around the plug. After 6-d cultivation of cell rings in differentiation medium, the C2C12 cells differentiated to form multinucleated myotubes. Thus, these procedures can provide a novel strategy for skeletal muscular tissue engineering.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126438854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351764
M. Sasaki
The thin film is advantageous for preparing the compliant spring and structures with little mass. The surface micromachining can take these advantages. Since the film structures suffer from the bending generated by the stress imbalance inside, the bulk micromachining is now frequently used. When the tensile stress is introduced in the thin film combining with bulk micromachining, the structural robustness will be obtained. As for the torsion bar, the compliant spring performance can be obtained for the twisting motion keeping the rigidity against the other motions. The potentials are indicated with the micromirror. The performances of the low-voltage driving, temperature stability, possibility for increasing the resonant frequency by decreasing the mass of the moving element, and the wireless driving using the subtle energy generated by the electromagnetic induction are confirmed.
{"title":"Microactuator using tensile thin film","authors":"M. Sasaki","doi":"10.1109/MHS.2009.5351764","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351764","url":null,"abstract":"The thin film is advantageous for preparing the compliant spring and structures with little mass. The surface micromachining can take these advantages. Since the film structures suffer from the bending generated by the stress imbalance inside, the bulk micromachining is now frequently used. When the tensile stress is introduced in the thin film combining with bulk micromachining, the structural robustness will be obtained. As for the torsion bar, the compliant spring performance can be obtained for the twisting motion keeping the rigidity against the other motions. The potentials are indicated with the micromirror. The performances of the low-voltage driving, temperature stability, possibility for increasing the resonant frequency by decreasing the mass of the moving element, and the wireless driving using the subtle energy generated by the electromagnetic induction are confirmed.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124162808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-12-11DOI: 10.1109/MHS.2009.5351755
M. Rokunuzzaman, K. Sekiyama, T. Fukuda
This paper introduces a new decision making criteria by which the Region of Interest (ROI) is selected and evaluated. This criterion is based on Human psychology of relevance in visual perception. The experimental results are validated by comparing with Eye tracker system and Human evaluation measured by Subjective Correlation value for each ROI.
{"title":"A new decision making criteria of ROI evaluation in video sequences and comparison with human evaluation psychology","authors":"M. Rokunuzzaman, K. Sekiyama, T. Fukuda","doi":"10.1109/MHS.2009.5351755","DOIUrl":"https://doi.org/10.1109/MHS.2009.5351755","url":null,"abstract":"This paper introduces a new decision making criteria by which the Region of Interest (ROI) is selected and evaluated. This criterion is based on Human psychology of relevance in visual perception. The experimental results are validated by comparing with Eye tracker system and Human evaluation measured by Subjective Correlation value for each ROI.","PeriodicalId":344667,"journal":{"name":"2009 International Symposium on Micro-NanoMechatronics and Human Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131160297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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