Particle Element and Size Simultaneous Measurement Using LIBS

Zimin

IEEE SENSORS 2014 Proceedings

2014

Self Cite

We report a new laser scanning device to be used in a laser-induced breakdown spectroscopy (LIBS) system. The system consists of a tunable lens, a cold mirror that transmits infrared wavelengths, two galvano mirrors, a condenser lens, and an optical axis adjusting laser. Conventional laser scanning technologies have two main applications: (i) in the industry, for drawing simple dots/lines with high power lasers; and (ii) in laser art projections, where far more complex illustrations and animations using visible lasers have been achieved. These two applications have been developed separately. Our scanning system combines the advantages of both these technologies by employing high-strength galvano mirrors as well as a driving system that meets the international laser display association (ILDA) standard. Moreover, by assembling the electrically controlled tunable lens, any measuring point where the generation of laser-induced plasma is needed, can be reached in a given space.

Section: Introductionmentioning

confidence: 99%

Development of a 3D laser scanning system for laser-induced breakdown spectroscopy

Zimin

IEEE SENSORS 2014 Proceedings

2014

Self Cite

“…Previously, we used an LIBS system combined with a scanning mobility particle sizer (SMPS) for particle size measurement. (5) This combined system can reveal the significance of the aggregate nature of soot via the interpretation of size and volume fraction measurements obtained with an SMPS, but the accuracy of primary particle size measurements must be verified by another method.…”

Section: Introductionmentioning

confidence: 99%

Optical Analytical Technique for Carbonaceous Particles Using Laser-Induced Electro-Avalanche Fluorescence and Laser-Induced Incandescence

Wakamatsu²,

2013

Sensors and Materials

This report describes an optical sensing system for fine particle detection using a combination of two techniques: laser-induced breakdown spectroscopy (LIBS) and laserinduced incandescence (LII). We have improved laser measurement systems applied for small-particle analysis. We have determined elemental composition and density of particles using LIBS and have been able to measure particle size using LII. Controlling the power density of the light source of the present system allowed switching from LIBS to LII. LII temporal analysis was conducted using a streak camera, which was also used for LIBS analysis. The LII technique allows in situ measurement of the average primary particle size of nanoscale soot particles.

“…Our research group has investigated and improved the LIBS system since the 1990s for use in quantitative analysis [35][36][37]. From our investigations, some important knowledge and information have emerged about the relationship between the time profile of the plasma emission intensity and the measurement conditions, particle size, type of ambient gas, and atmospheric pressure [38,39]. This knowledge is used in the present work to improve our quantitative calibration techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of Semi-Quantitative Analytical System for Metal Nanoparticle Ink Using Laser-Induced Breakdown Spectroscopy

Wakamatsu

International Journal on Smart Sensing and Intelligent Systems

2012

Abstract-This paper describes the semi-quantitative analysis of metal nanoparticle ink using laserinduced breakdown spectroscopy (LIBS). LIBS can be used to obtain information about the density and chemical composition of silver particles or copper particles, even ultrafine particles. Metal particles have been attracting much attention because of their increased use in new micro-nano technologies. In this work, LIBS was used as a fine metal particle measurement system for nanometallic materials used in printing. Good spectral peak resolutions were obtained when the Ag spectra were recorded at wavelengths of 328.068 nm and 338.289 nm and Cu spectra at 324.754 nm and 327.396 nm.