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Inexpensive Wilhelmy balance based in a fiber optic sensor for the study of Langmuir films

Abstract:

An inexpensive Wilhelmy balance based on a fiber optic sensor capable of sensitive surface tension measurements has been designed and implemented. The system consists of a leaf spring conforming a cantilever structure and a bifurcated optical fiber acting as a laser beam deflection detector. Operated in a static way, it achieves a force measurement sensitivity of 0.154 V by N and a tension surface resolution of 0.1 mN/m. π -A isotherms of Langmuir films from insoluble amphiphiles 5 hexadecanoylaminofluorescein (fluorescein H-110) in water, were followed as a model system to characterize this instrument. © 2005 American Institute of Physics.

Año de publicación:

2005

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Ciencia de materiales
    • Fibra
    • Ciencia de materiales

    Áreas temáticas:

    • Electricidad y electrónica
    • Física aplicada
    • Tecnologías de limpieza, color y recubrimiento

    Contribuidores:

    Castillo J.Castillo J.
    Gutírrez H.Gutírrez H.
    Manuel CaetanoManuel Caetano
    Chirinos J.Chirinos J.