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11th International Microprocesses and Nanotechnology Conference (MNC 98)

作者： Huang, S Sakaue, H Shingubara, S Takahagi, T Hiroshima Univ Dept Elect Engn Higashihiroshima 7398527 Japan

ISBN: (纸本)4930813832

We have studied a fabrication strategy for self-organization of a two-dimensional array of alkanethiol-encapsulated gold nanodots. The fabrication process has two steps: (1) preparation of alkanethiol-encapsulated gold particles from gold colloidal panicles;(2) self-organization of an ordered close-packed array of gold nanodots encapsulated by alkanethiol on a substrate. By this method, we succeeded in fabricating a wide range of ordered close-packed monolayers of gold nanodots. The simplicity, Flexibility, and practicality of this method makes it a prospective procedure for developing future nanoelectronic devices.

关键词： self-organization two-dimensional array gold nanodot gold colloid self-assembled monolayer alkanethiol

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Study on Group Key Agreement Using two-dimensional array in Sensor Network Environment

Study on Group Key Agreement Using Two-Dimensional Array in ...

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2nd International Conference on Ubiquitous Computing and Multimedia Applications

作者： Jang, Seung-Jae Lee, Young-Gu Ko, Hoon Jun, Moon-Seog Soongsil Univ Dept Comp Sci Seoul 156743 South Korea Inst Engn Polytechn Porto Oporto Portugal

ISBN: (纸本)9783642209741

These days, with the implementation of ubiquitous computing concept, sensor networks that collect analyze and process information of things and environment through sensors have become a huge interest as the technology that would realize this concept. However, sensor network technology has wireless communication infrastructure as its foundation and fundamentally has security weakness with limitations on low computing capacity, power supply and low budget. The core of group telecommunications between sensor network sensor nodes is the group key management. Managing group key requires appreciating group key security and management mechanism efficiency. This paper takes the characteristics of sensor network into consideration and not only increases the group key agreement efficiency through two-dimension array key set distribution and not the existing group key method to satisfy both the network function and security but also protects information between each nodes thereby enhancing the sense of security.

关键词： Sensor Network Group Key Agreement two-dimensional array

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Ultrasonic two-dimensional array transducer of the single-unit type with a conductive backing of the 1-3 piezocomposite structure

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JAPANESE JOURNAL OF APPLIED PHYSICS 2014年第7期53卷 07KD06-07KD06页

作者： Woo, Jeongdong Roh, Yongrae Kyungpook Natl Univ Sch Mech Engn Taegu 702701 South Korea

A two-dimensional (2D) array transducer has been developed in this work using a new conductive backing. The 2D array transducer was designed to comprise 4,096 channels operating at the center frequency of 3.4MHz with a fractional bandwidth over 50%. The 2D array transducer designed in this work is different from other matrix transducers in that all the active channels were installed on a single piezoelectric crystal plate as a whole unit by using the new conductive backing. The new conductive backing has a structure similar to that of 1-3 piezocomposite materials. Based on the design, an experimental prototype of the 2D array transducer was fabricated and characterized. The prototype showed good agreement with the design and excellent sensitivity uniformity over the entire channels. These results confirmed the applicability of the new conductive backing to 2D array transducers. (C) 2014 The Japan Society of Applied Physics

关键词： backings fractional bandwidth two-dimensional array single unit Transducers conductivity center frequency

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Study of segment dictionary based on two-dimensional array

Study of segment dictionary based on two-dimensional array

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2010 3rd IEEE International Conference on Broadband Network and Multimedia Technology, IC-BNMT2010

作者： Li, Chengcheng Wu, Hong School of Computer and Information Engineering Inner Mongolia Normal University Hohhot China

ISBN: (纸本)9781424467709

Chinese word automatic segmentation is the foundation of Chinese Information Processing, and it has widely application in many fields. In this paper, a new dictionary mechanism is presented: According to the Chinese characteristic of the high frequency of one word and two words we put forward such an idea that we can build up index table by the first two words as the keywords, and this index table is a two-dimensional array. This algorithm directly locates data by establishing a corresponding relationship between the first two Chinese characters' internal code. In this way, we can directly find out the two-word words by using the two-dimensional array. This approach can significantly reduce the times of queries, so as to further accelerate the speed of segmentation. © 2010 IEEE.

关键词： Dictionary mechanism Segmentation dictionary two-dimensional array

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two-dimensional array Antenna with Element Separations Adjusted to Excitation Distribution

Two-Dimensional Array Antenna with Element Separations Adjus...

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IEEE International Symposium on Antennas and Propagation

作者： Tadashi Takano Tomoaki Yoshimine Kenji Saegusa College of Science and Technology Nihon University Funabashi Japan

ISBN: (数字)9781728166704

ISBN: (纸本)9781728166711

An amplitude distribution on a linear array antenna can be transformed to element separation distribution. This paper discusses the extension of such a separation-controlled array antenna from one-dimension to two-dimensions We study a two-dimensional array antenna composed of plural linear arrays with radial arrangement. The radiation patterns are compared between the amplitude-and separation-controlled arrays in reference to the equivalent parabola antenna. The dependence on the number of linear arrays is presented.

关键词： Design methodology Meetings Linear antenna arrays Antenna radiation patterns linear antenna arrays antenna radiation patterns Antenna arrays two-dimensional array linear arrays ANTENNA antennae amplitude distribution One Dimension Radiation patterns

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Template guided self-assembling two-dimensional array of Au@SiO₂ core-shell nanoparticles for room-temperature single electron transistors

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JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2005年第2期5卷 179-183页

作者： Yang, Y Nogami, M Shi, JL Ruan, ML Nagoya Inst Technol Dept Mat Sci & Engn Nagoya Aichi 4668555 Japan Chinese Acad Sci Shanghai Inst Ceram Key Lab High Performance Ceram & Superfine Micros Shanghai 200050 Peoples R China

The composite nanoparticles of a gold core capped by a SiO2 shell with well-controlled thickness have been synthesized and fabricated into two-dimensional array on silicon surface by a simple self-assembly method combined with an AFM nanolithography technique. Current-voltage measurements of the Au@SiO2 composite nanoparticles (shell thickness of 6 nm) show a well-pronounced Coulomb staircase with a period of 300 mV at room temperature, demonstrating single electron transistor behavior. The step width of the Coulomb staircase can be tuned by controlling the thickness of SiO2 shell. The tunable single electron tunneling properties make the 2D array of Au@SiO2 composite nanoparticles an ideal candidate for planar single electron transistor devices.

关键词： AFM nanolithography single electron tunneling Coulomb staircase self-assembly two-dimensional array

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Development of micro mechanical device having two-dimensional array of micro chambers for cell stretching

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BIOMEDICAL MICRODEVICES 2018年第1期20卷 10-10页

作者： Minami, K. Hayashi, T. Sato, K. Nakahara, T. Yamaguchi Univ Ube Yamaguchi Japan Tokushima Univ Tokushima Japan

This paper presents a novel cell stretching micro device having two-dimensional array of micro chambers. It enables an in situ time-lapse observation of stretched cell by using an optical microscope with high measurement efficiency. The presented device consists of a cell culture dish and the array of micro chambers made of silicone elastomer and extension structures made of photocurable resin, and is fabricated with MEMS technology. The fabrication process of the thin micro chamber array combines photoresist mold and lift-off process based on conventional photolithography. The fabricated device has 134micro chambers in 5 mu m or less thickness. It was demonstrated that the fabricated micro device could be used to make in-situ time-lapse observation of cell responses to stretching under optical microscopy. In addition, the influence of the chamber thickness to the quality of the microscope image observed was evaluated. It is confirmed that the proposed device having two-dimensional array of the thin micro chambers makes it possible to observe cell response for stretch stimuli with high quality and efficiency.

关键词： Cell stretching Mechanical stimulation Cellular response Thin micro chamber two-dimensional array

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Self-organization of a two-dimensional array of gold nanodots encapsulated by alkanethiol

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JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 1998年第12B期37卷 7198-7201页

作者： Huang, S Sakaue, H Shingubara, S Takahagi, T Hiroshima Univ Dept Elect Engn Higashihiroshima 7398527 Japan

关键词： self-organization two-dimensional array gold nanodot gold colloid self-assembled monolayer alkanethiol

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Gate voltage dependence of the resistance of a two-dimensional array of small tunnel junctions

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JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 1997年第6B期36卷 4020-4021页

作者： Kazawa, H Yagi, R Ono, K Ootuka, Y Kobayashi, S Univ Tokyo Grad Sch Sci Dept Phys Bunkyo Ku Tokyo 113 Japan Univ Tokyo Cryogen Ctr Bunkyo Ku Tokyo 113 Japan

We studied the gate voltage dependence of the resistance of a two-dimensional array of Al/AlOx/Al small tunnel junctions. The resistance exhibited periodic oscillations similar to those in a single electron transistor in both superconducting and normal states. The amplitude of the oscillation in the superconducting state was much smaller than that in the normal state.

关键词： tunnel junctions two-dimensional array gate voltage dependence

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Double-sided electrohydrodynamic jet printing of two-dimensional electrode array in paper-based digital microfluidics

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SENSORS AND ACTUATORS B-CHEMICAL 2019年 282卷 831-837页

作者： Jafry, Ali Turab Lee, Hyungdong Tenggara, Ayodya Pradhipta Lim, Hosub Moon, Youngkwang Kim, Seung-Hyun Lee, Yongwoo Kim, Sung-Min Park, Sungsu Byun, Doyoung Lee, Jinkee Sungkyunkwan Univ Sch Mech Engn Suwon 16419 Gyeonggi Do South Korea Ghulam Ishaq Khan Inst Engn Sci & Technol Fac Mech Engn Topi 23640 Pakistan Brown Univ Sch Engn Providence RI 02912 USA Univ Massachusetts Lowell Dept Chem Lowell MA 01854 USA

Double-sided electrohydrodynamic jet printing of circuitry using silver nanowires (AgNWs) and dispensing of high viscosity silver nanoparticles (AgNPs) is demonstrated for the first time in the fabrication of a two-dimensional array of electrodes (3D circuitry) on a single sheet of paper. The penetration of AgNW ink through the paper's thickness by capillary imbibition allows for multilayer electrical access to connect the individual electrodes. This makes it an automated and efficient choice as the functional area of the device is conserved and the surface of the paper is preserved. This allows for two-dimensional droplet manipulation on a paper-based digital microfluidics (PBDMF) platform. Compared to printed circuit board technology, paper-based electronics offer a range of desirable properties: they are light weight, portable, economical, flexible, biodegradable, and the materials are abundantly available. The fabricated PBDMF chip is demonstrated to be a low-cost, fully re-configurable, and disposable point-of-care diagnostic platform for the environmental sensing of pesticide using organophosphorus hydrolase enzyme through colorimetric detection via smartphone.

关键词： Paper-based digital microfluidics Electrohydrodynamic jet printing two-dimensional array 3D circuitry

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