Extension of the Equation for the Annihilation Lifetime of ortho-Positronium at a Cavity Larger than 1 nm in Radius K Ito, H Nakanishi, Y Ujihira The Journal of Physical Chemistry B 103 (21), 4555-4558, 1999 | 209 | 1999 |
Free volume and permeabilities of O2 and H2 in Nafion membranes for polymer electrolyte fuel cells HFM Mohamed, K Ito, Y Kobayashi, N Takimoto, Y Takeoka, A Ohira Polymer 49 (13-14), 3091-3097, 2008 | 132 | 2008 |
Oxygen permeability and free volume hole size in ethylene–vinyl alcohol copolymer film: temperature and humidity dependence M Muramatsu, M Okura, K Kuboyama, T Ougizawa, T Yamamoto, ... Radiation Physics and Chemistry 68 (3-4), 561-564, 2003 | 123 | 2003 |
Preparation of BTESE-derived organosilica membranes for catalytic membrane reactors of methylcyclohexane dehydrogenation T Niimi, H Nagasawa, M Kanezashi, T Yoshioka, K Ito, T Tsuru Journal of membrane science 455, 375-383, 2014 | 105 | 2014 |
Multiple point adsorption in a heteropolymer gel and the Tanaka approach to imprinting: experiment and theory K Ito, J Chuang, C Alvarez-Lorenzo, T Watanabe, N Ando, AY Grosberg Progress in polymer science 28 (10), 1489-1515, 2003 | 105 | 2003 |
Structural characterization of thin-film polyamide reverse osmosis membranes J Albo, H Hagiwara, H Yanagishita, K Ito, T Tsuru Industrial & Engineering Chemistry Research 53 (4), 1442-1451, 2014 | 90 | 2014 |
Positronium chemistry in porous materials Y Kobayashi, K Ito, T Oka, K Hirata Radiation Physics and Chemistry 76 (2), 224-230, 2007 | 85 | 2007 |
Correlation study between free-volume holes and molecular separations of composite membranes for reverse osmosis processes by means of variable-energy positron annihilation … Z Chen, K Ito, H Yanagishita, N Oshima, R Suzuki, Y Kobayashi The Journal of Physical Chemistry C 115 (37), 18055-18060, 2011 | 81 | 2011 |
Frustrations in polymer conformation in gels and their minimization through molecular imprinting T Enoki, K Tanaka, T Watanabe, T Oya, T Sakiyama, Y Takeoka, K Ito, ... Physical review letters 85 (23), 5000, 2000 | 80 | 2000 |
New insights into the microstructure-separation properties of organosilica membranes with ethane, ethylene, and acetylene bridges R Xu, SM Ibrahim, M Kanezashi, T Yoshioka, K Ito, J Ohshita, T Tsuru ACS applied materials & interfaces 6 (12), 9357-9364, 2014 | 75 | 2014 |
Positronium formed by recombination of positron-electron pairs in polymers K Sato, D Shanai, Y Hotani, T Ougizawa, K Ito, K Hirata, Y Kobayashi Physical review letters 96 (22), 228302, 2006 | 75 | 2006 |
Intrinsic momentum distributions of positron and positronium annihilation in polymers K Sato, K Ito, K Hirata, RS Yu, Y Kobayashi Physical Review B 71 (1), 012201, 2005 | 70 | 2005 |
Probing the elemental environment around the free volume in polymers with positron annihilation age− momentum correlation spectroscopy K Sato, H Murakami, K Ito, K Hirata, Y Kobayashi Macromolecules 42 (13), 4853-4857, 2009 | 60 | 2009 |
Nanoporous structure of sputter-deposited silicon oxide films characterized by positronium annihilation spectroscopy Y Kobayashi, W Zheng, TB Chang, K Hirata, R Suzuki, T Ohdaira, K Ito Journal of applied physics 91 (3), 1704-1706, 2002 | 60 | 2002 |
Gas-phase selective adsorption on functional monolayers immobilized on a highly sensitive quartz-crystal microbalance Y Okahata, K Matsuura, K Ito, Y Ebara Langmuir 12 (4), 1023-1026, 1996 | 55 | 1996 |
Interlaboratory comparison of positron annihilation lifetime measurements for synthetic fused silica and polycarbonate K Ito, T Oka, Y Kobayashi, Y Shirai, K Wada, M Matsumoto, M Fujinami, ... Journal of Applied Physics 104 (2), 026102, 2008 | 54 | 2008 |
Correlation Study between Oxygen Permeability and Free Volume of Ethylene− Vinyl Alcohol Copolymer through Positronium Lifetime Measurement K Ito, Y Saito, T Yamamoto, Y Ujihira, K Nomura Macromolecules 34 (18), 6153-6155, 2001 | 54 | 2001 |
Experimental and theoretical study on small gas permeation properties through amorphous silica membranes fabricated at different temperatures M Kanezashi, T Sasaki, H Tawarayama, H Nagasawa, T Yoshioka, K Ito, ... The Journal of Physical Chemistry C 118 (35), 20323-20331, 2014 | 42 | 2014 |
Positronium time-of-flight measurements of porous low- films RS Yu, T Ohdaira, R Suzuki, K Ito, K Hirata, K Sato, Y Kobayashi, J Xu Applied physics letters 83 (24), 4966-4968, 2003 | 42 | 2003 |
High sensitivity of positron annihilation to thermal oxidation of polyethylene K Ito, Y Kobayashi, A Nanasawa Applied physics letters 82 (4), 654-656, 2003 | 39 | 2003 |