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Vol. 125, Issue 2, February 2011, pp.100-106



Detections of Water Content Changes in a Nitrocellulose Membrane Based on Polarized Reflection Spectroscopy


Hariyadi Soetedjo

Center for Integrated Research and Innovation (CIRNOV–UAD),

and Study Program of Physics, The University of Ahmad Dahlan,

Jl. Cendana No 9A, Yogyakarta 55166, Indonesia

Tel.: +62-274-563515 ext. 1613, fax: +62-274-564604

E-mail: hariyad2@yahoo.com



Received: 17 November 2010   /Accepted: 15 February 2011   /Published: 28 February 2011


Abstract: The detections have been carried out to the nitrocellulose membrane (wet and dry condition) using a self-construction of polarized reflection spectroscopy. The measurement was done by illuminating the sample at an incident angle of 70° using a visible light source and then analyzing the reflected light off the sample received by the detector of spectrometer. From the investigation, the change of water content introduced to the membrane has been observed respects to the observation time. The water molecules present in or left the porous of membrane could be detected through the investigating of reflected intensities obtained from the measurement.


Keywords: Polarized light, Nitrocellulose, Optical reflection, Sensors


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