Formation of Ordered Pores Determined by Positronium Time of Flight Spectroscopy

Xiu Bo Qin; Run Sheng Yu; Toshikazu Kurihara; Xing Zhong Cao; Bao Yi Wang; Long Wei

doi:10.4028/www.scientific.net/MSF.607.201

Paper Titles

Open-Nano Pores in Natural Minerals Studied by Positron Lifetime Spectroscopy
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Study of the Defect Formation of Helium in Nanocrystalline Titanium Films
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Tungsten Oxide Nanostructures Growth in HFCVD System by Slow Positron Beam
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Positron Annihilation in Carbon Nanotubes
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Formation of Ordered Pores Determined by Positronium Time of Flight Spectroscopy
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Influence of Sintering Temperature on Defects in Porous Silica Monoliths Studied by Positron Annihilation Techniques
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Porous Structure of Mesoporous Silica Studied by Positron Annihilation Lifetime Spectroscopy
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Temperature Dependence of Free Volume in Epoxy/Rectorite Nanocomposites by Positron Annihilation
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Influence of Temperature on Intratrack Processes and Ps Formation and Behaviour in Liquid Water
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HomeMaterials Science ForumMaterials Science Forum Vol. 607Formation of Ordered Pores Determined by...

Formation of Ordered Pores Determined by Positronium Time of Flight Spectroscopy

Abstract:

We prepared a series of mesoporous silica films to study the structural information of ordered pores by positronium Time of Flight (Ps-TOF) spectroscopy. By changing the ratio of surfactant to silicon source, the pore structure is tuned. Results show that once ordered pores are formed, clear Ps TOF peak is observed. And the film with less distributed pore geometry leads to a narrowed Ps TOF peak.