TY - JOUR N2 - In this paper, we describe nuclear magnetic resonance measurements of water diffusion in highly confined and heterogeneous colloidal systems using an anomalous diffusion model. For the first time, temporal and spatial fractional exponents, ? and ?, introduced within the framework of continuous time random walk, are simultaneously measured by pulsed gradient spin-echo NMR technique in samples of micro-beads dispersed in aqueous solution. In order to mimic media with low and high level of disorder, mono-dispersed and poly-dispersed samples are used. We find that the exponent ? depends on the disorder degree of the system. Conversely, the exponent ? depends on both bead sizes and magnetic susceptibility differences within samples. The new procedure proposed here may be a useful tool to probe porous materials and microstructural features of biological tissue. IS - 3 ID - discovery10074395 UR - https://doi.org/10.1063/1.3610367 TI - Spatio-temporal anomalous diffusion in heterogeneous media by nuclear magnetic resonance SN - 1089-7690 Y1 - 2011/07/21/ AV - public PB - AIP Publishing A1 - Palombo, M A1 - Gabrielli, A A1 - De Santis, S A1 - Cametti, C A1 - Ruocco, G A1 - Capuani, S JF - The Journal of Chemical Physics N1 - This version is the version of record. For information on re-use, please refer to the publisher?s terms and conditions. VL - 135 ER -