Surface element-mapping of three dimensional structures by laser-induced breakdown spectroscopy

Beresko, Christian; Kohns, P.; Ankerhold, Georg

doi:10.1016/j.sab.2014.06.004

Cited by 30 publications

(14 citation statements)

References 15 publications

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“…The wavelength and the decline of intensity of characteristic emission peaks allow qualitative and sometimes quantitative analysis of the present elements. The method of LIBS is described in more detail elsewhere [ 49 – 54 ]. For LIBS measurements, the separated biomass was dried and placed without any further processing in the apparatus.…”

Section: Methodsmentioning

confidence: 99%

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Rösken¹,

Cappel²,

Körsten³

et al. 2016

Beilstein J. Nanotechnol.

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SummaryMicrobial biosynthesis of metal nanoparticles as needed in catalysis has shown its theoretical ability as an extremely environmentally friendly production method in the last few years, even though the separation of the nanoparticles is challenging. Biosynthesis, summing up biosorption and bioreduction of diluted metal ions to zero valent metals, is especially ecofriendly, when the bioreactor itself is harmless and needs no further harmful reagents. The cyanobacterium Anabaena cylindrica (SAG 1403.2) is able to form crystalline Au0-nanoparticles from Au3+ ions and does not release toxic anatoxin-a. X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and laser-induced breakdown spectroscopy (LIBS) are applied to monitor the time-dependent development of gold nanoparticles for up to 40 hours. Some vegetative cells (VC) are filled with nanoparticles within minutes, while the extracellular polymeric substances (EPS) of vegetative cells and the heterocyst polysaccharide layer (HEP) are the regions, where the first nanoparticles are detected on most other cells. The uptake of gold starts immediately after incubation and within four hours the average size remains constant around 10 nm. Analyzing the TEM images with an image processing program reveals a wide distribution for the diameter of the nanoparticles at all times and in all regions of the cyanobacteria. Finally, the nanoparticle concentration in vegetative cells of Anabaena cylindrica is about 50% higher than in heterocysts (HC). These nanoparticles are found to be located along the thylakoid membranes.

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Section: Methodsmentioning

confidence: 99%

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Rösken¹,

Cappel²,

Körsten³

et al. 2016

Beilstein J. Nanotechnol.

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“…In particular, Beresko et al 108 demonstrated the possibility of performing 3D multielemental chemical maps of complex-shaped surfaces without any additional equipment for the determination of the best focal position. In particular, Beresko et al 108 demonstrated the possibility of performing 3D multielemental chemical maps of complex-shaped surfaces without any additional equipment for the determination of the best focal position.…”

Section: Libsmentioning

confidence: 99%

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Evans

Pisonero

Smith

et al. 2015

J. Anal. At. Spectrom.

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“…Unser selbstentwickeltes und sehr kompaktes LIBS-System mit geringer Pulsenergie erlaubt es, Oberflächen abzurastern und eine flächige Elementanalyse in Form eines "Element Mapping" durchzuführen [5]. Dabei kommt eine von uns entwickelte neuartige automatisierte Methode zur optimalen Probenpositionierung in der fokalen Ebene der Sendeoptik zum Einsatz, welche eine zuverlässige topographische Elementanalyse auch unebener Probenoberflächen erlaubt.…”

Section: üBerblickunclassified

“…Zur Kompensation von Unebenheiten der Probenoberfläche haben wir eine automatische Nachfokussierung entwickelt [5] Bei jedem Messpunkt wird die über mehrere Laserpulse gemittelte Plasmaemission spektral ausgewertet. Das Spektrum setzt sich im Wesentlichen aus Emissionslinien der in der Probe enthaltenen chemischen Elemente zusammen.…”

Section: Auto-fokussierung Für 3d-libsunclassified

Schnelle Materialanalyse mit Lasern

Beresko

Dietz

Kohns

et al. 2014

Tm - Technisches Messen

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Zusammenfassung: Laseroptische Verfahren zur schnellen berührungsfreien Materialanalyse besitzen ein breites industrielles Anwendungsspektrum. Wir zeigen an ausgewählten Beispielen die Möglichkeiten der laserinduzierten Plasmaspektroskopie zur dreidimensionalen Elementanalyse (3D-LIBS) und beschreiben interessante Anwendungsfelder der Raman-Spektroskopie zur Identifikation molekularer Strukturen organischer und anorganischer Verbindungen.Schlüsselwörter: LIBS, laserinduzierte Plasmaspektroskopie, 3D-Elementanalyse, Raman-Spektroskopie, Nanopartikel-Herstellung.Abstract: Laser-optical methods for fast non-contact material analysis exhibit a wide spectrum of industrial applications. We show selected examples of the possibilities of laser-induced breakdown spectroscopy for threedimensional element analysis (3D-LIBS) and describe interesting applications of Raman spectroscopy for identifying molecular structures of organic and inorganic compounds.

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Surface element-mapping of three dimensional structures by laser-induced breakdown spectroscopy

Cited by 30 publications

References 15 publications

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Schnelle Materialanalyse mit Lasern

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Surface element-mapping of three dimensional structures by laser-induced breakdown spectroscopy

Cited by 30 publications

References 15 publications

Time-dependent growth of crystalline Au0-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Time-dependent growth of crystalline Au0-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Schnelle Materialanalyse mit Lasern

Contact Info

Product

Resources

About

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica

Time-dependent growth of crystalline Au⁰-nanoparticles in cyanobacteria as self-reproducing bioreactors: 2. Anabaena cylindrica