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

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

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
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

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
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
児玉 浩憲
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:13405551)
巻号頁・発行日
vol.138, no.10, pp.655, 2018

<p>ちょうど2年前の10月1日にプロ入りした将棋の中学生棋士・藤井聡太4段は今年4月,名古屋大学附属高校1年に進級し,5月には早くも7段に昇格した。この2年間の快進撃ぶりは一般ニュースでも逐一報じ</p>
著者
宇田 新太郎
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:00202878)
巻号頁・発行日
vol.46, no.456, pp.712-724, 1926

前報告に記載した三角型反射器を基本とし、一層電波の指向性を顯著にするため反射器を種々に排列し、實驗的に比較研究したのである。かくして遂に到達した角型反射器の測定結果を擧げ、其開きを適當にすれば、普通行はれてゐる比較的構造面倒なるパラボラ型の反射器と何等の遜色がない事、從つて實用には簡單な此の方が却つてよい事が述べてある。これを受信所に使用する時は、聚波器として効果のある事もまた實驗の結果を以て示してある。<br>次に反射器として棒の適當な長さに就て一言し、且つ角型反射器を使用した發信器より發射する指向性特別短電波を可聽周波數で變調し、携帶した受信器の音の強さに依つて周圍の電界の強さや指向性を調べた事に就て記載してある。<br>最後に特殊の形の空中線を使用して、短波長ビームを得た多くの實驗的結果を擧げてある。例へば空中線をL型、逆L型、或はそれから變形したものを用ひた時の測定結果や、又はU字形、距形等の空中線の場合の實驗的研究を記してある。
著者
河瀬 順洋 菊地 春秀
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:09136339)
巻号頁・発行日
vol.113, no.8, pp.995-1001, 1993
被引用文献数
8 2

To design DC electromagnets in an optimal manner, it is necessary to obtain the dynamic behavior accurately. A new method to calculate the dynamic behavior using the finite element method with edge elements has been developed. In order to verify its accuracy, the static and the dynamic behaviors of a clapper type electromagnet are calculated. The 3-D electromagnetic field analysis is carried out using the vector finite element with tetrahedral edge variables. The force is obtained by using the Maxwell stress tensor. The displacement of the armature of the electromagnet is obtained by solving the motion equation of the moving parts. The calculated results of the edge elements and that of the nodal elements are compared with the measurements. Moreover, it is clarified that the forces and the dynamic behavior can be accurately calculated using the edge elements.
著者
大城 諒士 塩塚 大志 原田 繁実 金子 英治 井上 喜乃 倉田 智成 横倉 邦夫
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:03854213)
巻号頁・発行日
vol.138, no.9, pp.791-798, 2018

<p>Surge voltages often have much higher value and changing rate than those of power frequency voltages, and might cause damages to apparatuses or equipment not only on near a surge source, for example lightning struck point, but also on far points from it due to propagating. In addition, surge phenomena often become complex due to the reflections and the superpositions on a point where surge impedances having different value are connected. The surge phenomenon occurring on a power cables connected with a transmission tower is one of these cases. This research's goal is to propose the EMTP model for surge phenomenon occurring on cables arranged through a transmission tower. The proposed model simulates such cable by using a cable model through a pipe conductor. The results calculated by the proposed model ware compared with the results by VSTLrev (Virtual Surge Test Lab. Restructured and Extended Version) which is a surge analysis program based on FDTD (Finite Difference Time Domain) method to verify the accuracy of the proposed model. As a result, the proposed model is reasonable for analysis of a surge phenomenon occurring on a cable through a transmission tower.</p>
著者
山中 誠 安田 隆
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.133, no.5, pp.155-156, 2013-05-01 (Released:2013-05-01)
参考文献数
4

This paper presents a novel QCM (quartz crystal microbalance) sensor for detecting interactions between membrane proteins and their ligands using liposomes derived from human cells. First, liposomes having BCR (B-cell receptor) were derived directly from cell membranes by stimulating human lymphocyte cells, Ramos, with NaB (sodium butyrate). Next, the liposomes were separated from the cells by filtration and micronized by sonication. Then, the liposomes were immobilized on the surface of a QCM sensor chip using cell-anchoring molecules. Several experiments demonstrated that ligand detection is achieved by frequency reduction with application of the antibody against BCR.
著者
鈴木 孝明 寺尾 京平 鈴木 博之 新田 祐幹 高尾 英邦 下川 房男 大平 文和 平丸 大介 小寺 秀俊
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.133, no.5, pp.139-146, 2013-05-01 (Released:2013-05-01)
参考文献数
20

In this study, we propose a simple observation method of the shape and molecular orientation of the chromosomes extracted from cells for a sample-to-analysis system in clinical diagnosis. The proposed technique is composed of total preparation technique such as cell immobilization, chromosomes extraction, stretching, suspension and analysis using a disposable microchip controlled by centrifugal force only. It is experimentally confirmed that the chip having two kinds of microstructures arranged concentrically on a chip immobilizes cells and stretches chromosomes extracted from the immobilized cells.
著者
中島 雄太 楊 寅 南 和幸
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.133, no.12, pp.358-364, 2013-12-01 (Released:2013-12-01)
参考文献数
13

This paper presents a cell compression stimulus microdevice intended to evaluate the real-time response of cells to compression stimuli. The presented device consists of cell inlet ports, a pressure inlet port, a gasket, microchannels, culture chambers, and a diaphragm on the culture chamber for applying compressive pressure to cells. Compression stimuli applied to the cells can be controlled by regulating the expansion of the diaphragm via a pressure control. The device permits the observation of cellular responses to compressive pressure in real time because it is made of transparent materials and stimulates the cells without deforming the cell culture surface, when observed by optical microscope. We observed the cellular deformation and response behavior using a fabricated microdevice in real time. The changes of intracellular calcium concentration before and after compressive stimuli were observed by the fabricated device. Also, the intracellular maximum strain part and strain distribution of a cell that received compression stimulus were clarified by FEM analysis. These results indicate the device is expected to clarify the cellular mechanoreceptor mechanisms and signal transduction pathways and facilitate the control of stem cell differentiation by a combination of the experimental results and FEM analysis results.
著者
Fikret Yildiz Tadao Matsunaga Yoichi Haga
出版者
The Institute of Electrical Engineers of Japan
雑誌
電気学会論文誌E(センサ・マイクロマシン部門誌) (ISSN:13418939)
巻号頁・発行日
vol.136, no.12, pp.515-521, 2016-11-01 (Released:2016-12-01)
参考文献数
21

This paper reports part of a novel packaging method for a capacitive micromachined ultrasonic transducer (CMUT) based ultrasonic endoscope using low temperature co-fired ceramic (LTCC) side via architecture. An annular ring array CMUT device is designed and fabricated for packaging. LTCC is used as a prime wafer for CMUT fabrication and LTCC side via structure is achieved by hexagonal shape dicing of the fabricated CMUT device. A hexagonal shaped polyimide substrate mounted at the backside of the CMUT is used as a base layer for IC integration (flip-chip bonding) and also provides mechanical support to the CMUT. Cr/Au electrodes were patterned on the LTCC side via and polyimide substrate to achieve electrical connection between CMUT arrays and IC circuits. Au bonding pads were successfully completed on the polyimide substrate by electroplating for flip-chip bonding. Flip-chip mounting on the polyimide substrate is described and the electrical resistance of bumps is measured using the 4-probe method. The difference between the measured and calculated resistance is discussed. This method with the indirect connection of CMUT arrays and IC circuits has flexibility for high performance tube-shaped CMUT packaging with small diameters for intravascular imaging.
著者
勝部 昭明
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.6, pp.296-299, 2002 (Released:2003-03-28)
参考文献数
26

This paper reports recent research activities and developments of odor sensor and taste sensor. The application fields and market places of these sensors are expanding by the remarkable progress both in sensing devices and signal processing engines. These sensor developments are first reviewed by comparing the differences between odor and taste detection technologies. Then, the quantitative analysis method of taste sensor is discussed and finally mentioned about a flavor sensor consisting of taste sensor and odor sensor.
著者
本多 史明 細野 智史 末重 良宝 藤野 真久 須賀 唯知 一木 正聡 伊藤 寿浩
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.133, no.11, pp.B320-B325, 2013-11-01 (Released:2013-11-01)
参考文献数
9

PZT (Pb(Zrx,Ti1-x)O3) thin film capacitors using Nano-transfer method has been developed for the fabrication technology of smaller capacitors. The adhesion strength of Pt to SiO2 was shown to be important among process factors. The adhesion force was shown to be originated from the material diffusion in the crystallization process mainly by the observation of TEM and XPS analysis. In this paper, diffusion of ingredients of PZT which is supposed to be one of the factors of the variation was investigated. It was confirmed that diffusion of Pb certainly occurs and this diffusion reinforces the adhesion strength in accordance with the Pt thickness. It is concluded that the diffusion is surely one of the factors of the variation of the adhesion strength.
著者
梶山 智晴 富田 裕之 宮原 裕二
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.119, no.10, pp.464-469, 1999-10-01 (Released:2008-12-19)
参考文献数
4
被引用文献数
1 1

We have developed a new method for cleaning flow-through cells by using microbubbles and ultrasonic (US) standing waves. A standing wave generated by US transducers at 1 MHz was used to trap microbubbles at node positions of the sound pressure. We were also able to control the microbubbles' positions spatially through frequency modulation. We found that these microbubbles were very effective for washing microbeads out of flow-through cells, particularly when frequency-modulated US irradiation was used. The proposed method promises to be very useful for cleaning the flow-through cells in small analytical instruments.