A diffraction-limited scanning system providing broad spectral range for laser scanning microscopy
Diversified research interests in scanning laser microscopy nowadays require broadband capability of the optical system. Although an all-mirror-based optical design with a suitable metallic coating is...
Diversified research interests in scanning laser microscopy nowadays require broadband capability of the optical system. Although an all-mirror-based optical design with a suitable metallic coating is...
A portable high-field pulsed-magnet system for single-crystal x-ray scattering studies
We present a portable pulsed-magnet system for x-ray studies of materials in high magnetic fields (up to 30 T). The apparatus consists of a split-pair of minicoils cooled on a closed-cycle cryostat, w...
We present a portable pulsed-magnet system for x-ray studies of materials in high magnetic fields (up to 30 T). The apparatus consists of a split-pair of minicoils cooled on a closed-cycle cryostat, w...
Measuring temperature-dependent water vapor and gas permeation through high barrier films
Rev. Sci. Instrum. 80, 113901 (2009); doi:10.1063/1.3250866
Published 2 November 2009
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A new test device for temperature-dependent permeation measurement, existing of a mass spectrometer and sample holders inside a climatic chamber was developed. The front face of a sample is loaded with the atmosphere in the cabinet or a test gas mixture, respectively. The permeated species are accumulated in a cell behind the sample. The increasing partial pressures of the permeants are measured by the mass spectrometer and than transferred into a transmission rate. The time-lag technique enables the determination of the diffusion coefficient. Results are given for atmospheric components as O2, N2, and water vapor permeated through different barrier films and laminates at temperatures from 23 to 80 °C. The limits of the detection of the transmission rates are in the range of 10−6 g/m2 d.
©2009 American Institute of Physics
| History: | Received 26 June 2009; accepted 26 September 2009; published 2 November 2009 |
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http://link.aip.org/link/?RSINAK/80/113901/1 |
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0034-6748 (print)
1089-7623 (online)
AIP
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