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  • JLA Vol:15 Iss:3 (Preparation of polyperinaphthalenic organic semiconductive nanoparticles by excimer laser ablation and their application to optic and electronic devices)


    Authors:
    Satoru Nishio
    Hiroshi Fukumura
    Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Sendai, Miyagi 980-8578, Japan

    Kazuyuki Tamura
    Jun Murata
    Junko Kitahara
    Teruhiko Kan
    Akiyoshi Matsuzaki
    Department of Chemistry for Materials, Faculty of Engineering, Mi’e University, 1515 Kamihama-cho, Tsu, Mi’e 514-8507, Japan

    Nobuo Ando
    Yukinori Hato
    Kanebo LTD., 3-1, Kanebo-cho, Hofu, Yamaguchi 747-0823, Japan


    Polyperinaphthalene (PPN) nanoparticles are prepared by excimer laser ablation (ELA) of a 3, 4, 9, 10-perylenetetracarbox...

    $25.00

  • JLA Vol:19 Iss:4 (Bench-top antigen detection technique that utilizes nanofiltration and fluorescent dyes which emit and absorb light in the near infrared)


    Authors:
    Vanessa A. Varaljay-Spence
    Department of Biological, Geological and Environmental Sciences, Cleveland State University, Cleveland, Ohio 44115, NASA Glenn Research Center at Lewis Field, Brook Park, Ohio 44135, and Department of Microbiology, University of Georgia, Athens, Georgia 30602

    Maximilian C. Scardelletti
    NASA Glenn Research Center at Lewis Field, Brook Park, Ohio 44135


    This article discusses the development of a bench-top technique to detect antigens in fluids. The technique involves the use of near infrared (NIR) fluorescent dyes conjugated to antibodies, centrifugation, nanofilters, and spectrometry. The system used to detect the antigens utili...

    $25.00

  • JLA Vol:24 Iss:5 (A comparative study of cut front profiles and absorptivity behavior for disk and CO<sub>2</sub> laser beam inert gas fusion cutting)


    Authors:
    Leonardo Daniele Scintilla
    Luigi Tricarico
    Dipartimento di Meccanica, Matematica e Management (DMMM), Politecnico di Bari, Viale Japigia, 182–70126 Bari, Italy

    Achim Mahrle
    Institute of Manufacturing Technology, Technische Universita¨t Dresden, 01062 Dresden, Germany and Fraunhofer IWS Dresden, Winterbergstraße 28, 01277 Dresden, Germany

    Andreas Wetzig
    Fraunhofer IWS Dresden, Winterbergstraße 28, 01277 Dresden, Germany

    Eckhard Beyer
    Institute of Manufacturing Technology, Technische Universita¨t Dresden, 01062 Dresden, Germany and Fraunhofer IWS Dresden, Winterbergstraße 28, 01277 Dres...

    $25.00

  • JLA Vol:8 Iss:3 (Theoretical and experimental studies of thick&hyphen;section cutting with a chemical oxygen&ndash;iodine laser (COIL))


    Authors:
    A. Kar
    J. E. Scott
    W. P. Latham



    A simple mathematical model of thick&hyphen;section stainless steel cutting with a high power chemical oxygen–iodine laser (COIL) is presented and compared with experimental results obtained with a 10&hyphen;kilowatt COIL at the U.S. Air Force's Phillips Laboratory. This model uses a lumped&hyphen;parameter technique to relate the cutting kerf depth with various process parameters and can be used to predict scaled laser materials processing performance to very thick sections. The model is similar to an empirical model developed by researchers in Japan, but includes predictive capabilities for thick metal cutting...

    $25.00

  • JLA Vol:2 Iss:3 (Current State&hyphen;of&hyphen;the&hyphen;Art of Contouring Techniques in Manufacturing)


    Authors:
    Kevin G. Harding
    Industrial Technology Institute, Sensor Center for Improved Quality, Ann Arbor, Michigan 48106


    A manager with a major automobile manufacturer once made the comment that “the best thing we ever did to improve quality was give the guys on the floor a caliper to measure the parts”. As the tolerances on manufacturing become tighter, the need for accurate measurement has also increased. Hand fitting of parts to each other does not work in modern automated factories. Gauges in the past have been built to provide a fixed set of measurements of a known part. This practice too has been changing due to the trend toward flexible manufacturing. Now the gages...

    $25.00

  • JLA Vol:24 Iss:3 (Laser cladding for railway repair and preventative maintenance)


    Authors:
    Adam Clare
    Olusola Oyelola
    Janet Folkes
    Peter Farayibi
    Innovative Manufacturing Processes Group, Manufacturing Division, Faculty of Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom


    Rolling contact fatigue, amongst other mechanisms of wear, between railway track and train wheel ensures that periodic replacement of worn track and other key components such as switches must be undertaken. The cost associated with repairing/replacing track is significant. This places a financial burden upon the rail network provider, creates a significant carbon footprint associated with remanufacture of track, an...

    $25.00

  • JLA Vol:6 Iss:4 (Erratum: Excimer laser processing of Ti&ndash;6Al&ndash;4V)


    Authors:
    J. A. Folkes
    K. Shibata
    Nissan Motor Co. Ltd, Materials Research Laboratory, Central Engineering Laboratories, 1, Nasushima&hyphen;cho, Yokosuka 237, Japan


    $25.00

  • JLA Vol:16 Iss:1 (Laser-induced electrochemical characteristics of aluminum alloy 2024-T3)


    Authors:
    Olga Kachurina
    Tammy L. Metroke
    Kai Dou
    Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078


    Laser-induced surface modification of aluminum alloy 2024-T3 was investigated as laser intensity dependence of surface composition and patterning related to electrochemical characteristics using techniques of environmental scanning electron microscopy (ESEM), potentiodynamic scan, and electrochemical impedance spectroscopy (EIS). Analysis of surface composition using ESEM and EIS indicated that laser fluences in a range of 1.1–1.3 J/cm2 were found to preferentially reduce the copper concentration in the alloy surf...

    $25.00

  • JLA Vol:20 Iss:2 (Review of exposure limits and experimental data for corneal and lenticular damage from short pulsed UV and IR laser radiation)


    Authors:
    Karl Schulmeister
    Austrian Research Centers, A-2444 Seibersdorf, Austria

    David H. Sliney
    US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland 21010-5422

    John Mellerio
    Department of Ophthalmology, Rayne Institute, St. Thomas’ Hospital, London, SE1 7EH, United Kingdom

    David J. Lund
    Bruce E. Stuck
    US Army Medical Research Detachment, Walter Reed Army Institute of Research, Brooks City-Base, San Antonio, Texas 78235-5108

    Joseph A. Zuclich
    Northrop Grumman Information Technology, San Antonio, Texas 78288-1330


    Laser exposure limits as ...

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