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  Laser temperature jump experiments with nanometer space resolution using rhodamine 101 anti-Stokes fluorescence from nanoseconds to milliseconds for precise measurements of temperature changes in liquid micro-environments - COLL 157

Holzwarth, J. F., Couderc, S., Beeby, A., Clark, I. P., & Parker, A. W. (2003). Laser temperature jump experiments with nanometer space resolution using rhodamine 101 anti-Stokes fluorescence from nanoseconds to milliseconds for precise measurements of temperature changes in liquid micro-environments - COLL 157. Abstracts of Papers of the American Chemical Society, 225, 157-COLL.

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 Urheber:
Holzwarth, Josef F.1, Autor           
Couderc, Sabine1, Autor           
Beeby, Andrew, Autor
Clark, Ian P., Autor
Parker, Anthony W., Autor
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

Inhalt

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Schlagwörter: Colloidal and Molecular Electro-Optics
 Zusammenfassung: Measurement of temperature changes in nanoliter volumes is a serious problem, especially if both high precision and nanosecond time resolution are required. Exploitation of the anti-Stokes fluorescence of the laserexcited rhodamine 101 dye offers a solution to the problem. We used a pulsed dye laser (bandwidth 20 ns) for time resolved measurements. The T-jump laser and the pulsed detection laser were aligned inside a 1 µm spot of a liquid sample. A DeltaT = 4 K caused 10% increase in fluorescence intensity. The detection was performed with a variable delay between 10 ns and 100 ms after the heating. We could observe special effects caused by shock-waves produced by the fast thermal expansion of the liquid sample. This new technique of time resolved anti-Stokes fluorescence measurements provides a convenient and precise tool to measure small temperature changes in nano-volumes of liquid samples under many different experimental conditions.

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Sprache(n): eng - English
 Datum: 2003-07
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Art des Abschluß: -

Veranstaltung

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Titel: 225th American Chemical Society (ACS) National Meeting – Division of Colloid and Surface Chemistry
Veranstaltungsort: New Orleans, LA
Start-/Enddatum: 2003-03-23 - 2003-03-27

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Titel: Abstracts of Papers of the American Chemical Society
  Alternativer Titel : Abst. Pap. Am. Chem. Soc.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: American Chemical Society
Seiten: - Band / Heft: 225 Artikelnummer: - Start- / Endseite: 157-COLL Identifikator: ISSN: 0065-7725
ISBN: 0841238723