著者
瓜生原 信輔
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.123, no.8, pp.271-278, 2003 (Released:2003-11-01)
参考文献数
10
被引用文献数
2 2

“Suica" is our contact-less IC-card's nickname: Super Urban Intelligent CArd. There are two types of Suica: 4.5 million Suica Commuter Pass with the stored fare (SF) function and 2 million Suica IO (SF) Cards have already been procured for ticket gate system. Suica can be used without taking the card from the pass-case, and the necessary fare will be extracted from the card automatically at the gate. Suica can be used repeatedly with the re-writing and reloading function. Suica Pass can be re-issued with the remaining stored fare when it is lost. There are 5.84 million Suica holders (about 2.94 million Suica Season Pass holders and 2.9 million Suica IO Card holders) as of 24, March 2003. Average reloading value amount is about 3, 000 Yens. There are almost 3 million transactions (not including the usage of Suica Pass inside the pass zone).
著者
広林 茂樹 田村 祐輔 山淵 龍夫 大薮 多可志
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.127, no.4, pp.258-259, 2007-04-01 (Released:2007-07-01)
参考文献数
7
被引用文献数
5 10

In this paper, we monitored the electromagnetic waves generated by human activity. We investigated a monitoring system that used the bioelectric potential of a plant. Four subjects walked on the spot at a distance of 60 cm from a rubber tree and we measured the variation in the bioelectric potential of the tree produced by the stepping motion. The results confirmed that the electromagnetic waves generated by a person walking on the spot produced a measurable response in the bioelectric potential of a plant. It was also found that this variation in the bioelectric potential varied in synchrony with the subject's walking pace.
著者
高橋 健 早瀬 仁則 初澤 毅
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.120, no.4, pp.156-161, 2000-03-20 (Released:2009-04-01)
参考文献数
8
被引用文献数
1

A fabrication process of tungsten probes for surface profile measurements has been improved. The probe contour is designed to have an optimum shape for the use of tapping stylus. An improved DC electropolishing is applied for the elimination of surface impurities and smaller stylus radius with exponential contour, which uses an electrical flushing and a surface tension control of the electrolyte. The process is experimentally confirmed to have advantages for the fabrication of the stabilized stylus contour, typically with a stylus radius of 30nm. They have smoother contours compared with those fabricated by AC electropolishing.
著者
田渕 史 渡部 祥山 Stanislav L. Karsten 籔内 研佑 佐原 義基 髙里 実 藤本 和也 横川 隆司
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.143, no.9, pp.306-312, 2023-09-01 (Released:2023-09-01)
参考文献数
14

Main function of glomerulus is to filter plasma and waste products from blood. The filtration function is known to be impaired and irreversibly damaged by a disease or a drug administration. Therefore, nephrotoxicity assessment is essential for a new drug development. However, conventional animal models for drug screening cannot appropriately assess toxicity of drugs to human glomerulus. In this study, we constructed a glomerulus-on-a-chip using human podocytes and evaluated the selectivity of inulin and albumin for filtration function.
著者
山下 崇博 Khumpuang Sommawan 三宅 晃司 伊藤 寿浩
出版者
The Institute of Electrical Engineers of Japan
雑誌
電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society (ISSN:13418939)
巻号頁・発行日
vol.132, no.4, pp.66-70, 2012-04-01
被引用文献数
2 1

Conductive polymer coated micro-cantilever array made by reel-to-reel continuous fiber process as the electrical contact components for woven electronic textile was investigated. We report the novel cantilever releasing method using air injection and the results of patternable CYTOP and organic conductive polymer using nanoimprinting method. The conductive organic material used in this study is PEDOT:PSS (poly(3,4-ethylenedioxythiophene) poly(4-styrenesulfonate)). Micro-cantilever contact array is realized to compose the electrical circuit through the large area woven textile. The contact resistance of 480 Ω is hold on for over 500 times. Contact resistance measurements revealed that an electric current begins to flow with smaller contact force for PEDOT:PSS coated cantilever array structure than for PEDOT:PSS film structure. There is no appreciable wear on cantilever surface due to its movability after 10<SUP>3</SUP> cycles contact test with 0.5 N contact force. Based on these results, PEDOT:PSS coated micro-cantilever array have excellent potential as electrical contact components between weft and warp for woven electronic textile.
著者
神山 和人 梶本 裕之 稲見 昌彦 川上 直樹 舘 暲
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.123, no.1, pp.16-22, 2003 (Released:2003-04-01)
参考文献数
17
被引用文献数
14 19

Receiving tactile information from a slave-robot is a necessary component of telexistence with haptic display, but there are few tactile sensors that can measure the distribution of three-dimensional force vectors on a surface. For this reason, we developed a sensor that provides three-dimensional force distribution by detecting movement vectors in the transparent elastic body with a video camera. From a result of the experiment, it turned out this approach is effective.
著者
徐 嘉楽 野々村 美宗 峯田 貴
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.139, no.12, pp.393-399, 2019-12-01 (Released:2019-12-01)
参考文献数
20
被引用文献数
2

In this paper, we fabricated periodic Si micro-bump structure, and sensory evaluation of tactile feeling of roughness and frictional resistance with human finger was conducted with paired comparison method. In addition, friction coefficient between the micro-bump array and an artificial urethane finger model that mimics human fingertip was evaluated. The samples had various bump sizes with width of 20∼600 µm and space of 20 µm. The space between the bumps (20 µm) was decided so that finger skin cannot enter the grooves. The result of sensory evaluation showed that rough feeling was increased with decreasing the micro bump size from 600 µm to 50 µm due to the edge effects of micro bump. The friction resistance feeling was influenced by contact area between the skin and bump surface. In addition, the friction resistance feeling was strong when the micro bump size was 50 µm. Also, the stick-slip phenomenon was strongly observed in the frictional measurement using artificial finger model.
著者
佐野 知巳 春本 道子 島津 貴之 伊与田 義智 井上 享
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.130, no.8, pp.373-377, 2010-08-01 (Released:2010-08-01)
参考文献数
14
被引用文献数
1

The ultra compact optical RGB multiplexer for a pocket projector that size is 8.8(W)×6.0(D)×4.0(H)(mm) was developed by the micro-molding processing. The RGB multiplexer was constructed by the optical filter and three lenses for each RGB laser diode in the molding packaging. The interface of the optical filter and the resin was not existed an air gap by optimizations of molding conditions. We were successfully projected onto a screen using the RGB multiplexer.
著者
野村 健太 南保 英孝 木村 春彦
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.134, no.7, pp.206-211, 2014 (Released:2014-07-01)
参考文献数
18
被引用文献数
5

In this paper, we investigated influence on plant bioelectric potential by basic human behaviors. We analyzed four basic human behaviors such as touching the plant, opening the door, approaching the plant and turning on the lighting. As a result, the special response of bioelectric potential were influenced by each behavior. Bioelectric potential shows the impulse responses due to the behavior. Therefore we tried to learn and recognize human behaviors by extracting a characteristic from plant bioelectric potential. The method to recognize basic human behaviors that we propose uses a low level ingredient of cepstrum of plant bioelectric potential. Some data didn't recognize correctly because of individual difference of human behaviors, however, F-measure became an average of 0.76. It shows that the proposal method may be effective way to recognize basic human behaviors from plant bioelectric potential.
著者
原 仁 岸 直輝 岩岡 秀人
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.122, no.5, pp.274-279, 2002 (Released:2003-03-28)
参考文献数
11

We have developed an infrared detector and a micro variable infrared filter for micro-spectrum analyzing devices. Two infrared detectors and the infrared filter were mounted on the identical package. A micro-spectrum analyzing device of 1cm3 volume as the two wavelength NDIR system for combining these elements with the infrared source was able to measure the concentration of carbon dioxide.
著者
林部 林平 渡辺 誠一 伊藤 秀明
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.122, no.1, pp.23-28, 2002 (Released:2003-03-28)
参考文献数
9

The authors produced a driving circuit for resistive humidity sensor using the timer IC and applied it to the thermo-hygrometer. This paper describes as follows: (1) a simple driving circuit using the timer IC was produced and the theoretical equation of its oscillating frequency was derived. (2) relative humidity as low as 10 %RH could be measured using the driving circuit for resistive humidity sensor. (3) the measurement error of the thermo-hygrometer using the driving circuit was achieved within ± 3 %RH above 30 %RH.
著者
平井 義和 Sadik Hafizovic Jan G. Korvink 田畑 修
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.123, no.9, pp.368-375, 2003 (Released:2003-12-01)
参考文献数
10
被引用文献数
3 3

We have developed an X-ray lithography simulation system X3D (Moving Mask Deep X-ray Lithography Simulation System for 3-Dimensional Fabrication) for the first time, that is tailored to simulate the fabrication process of 3-dimensional microstructures using the M2DXL (Moving Mask Deep X-ray Lithography) technique. The newly developed X3D can simulate the progress of developed PMMA surface with developing time using chemical dissolution rate data as a function of dose energy. The simulation system consists of three modules: mask generation, exposure, and development. The exposure module calculates a dose energy distribution over a PMMA using a mask pattern and its movement pattern, and then converts this dose energy to a dissolution rate of PMMA. The development module adopted a "Fast Marching Method" to calculate the resultant 3D shape of the PMMA. In this paper, a new experimental method to determine dissolution rate as a function of dose energy that dominates the simulation accuracy was proposed. An experimental procedure of the new experimental method, the determined dissolution rate, and verification of the measured results are presented.
著者
伴野 明 神田 こより 大竹 俊弥
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.128, no.12, pp.478-486, 2008-12-01 (Released:2008-12-01)
参考文献数
14
被引用文献数
1 3

If a person's eyes are greater attracted to the target objects by matching the smell to an important scene of a movie or commercial image, the value of the image contents will rise. In this paper, we attempt to describe the image system that can also present smells, and the reason behind the improvement, from gaze point analysis, of the presence of smell when it is matched to the image. The relationship between the eye catching property and the position of the sight object was examined using the image with the scene where someone eats three kinds of fruits. These objects were gazed at for a long time once releasing their smells. When the smell was not released, the gaze moved actively to try and receive a lot of information from the entire screen. On the other hand, when the smell was inserted, the subject was interested in the object and there was a tendency for their gaze to stay within the narrow area surrounding the image. Moreover, we investigated the effect on the memory by putting the smell on the flowers in the virtual flower shop using immersive virtual reality system (HoloStageTM). It was memorized more easily compared with a scentless case. It seems that the viewer obtains the information actively by reacting to its smell.