Fractal-like structures in colloid science

• The existing techniques to measure and compute the fractal dimension are summarized
• Aggregation conditions affecting the fractal dimension are analyzed
• The importance of the fractal dimension in applications is discussed
• Possible directions for the production of new structured materials are indicated

The present work aims at reviewing our current understanding of fractal structures in the frame of colloid aggregation as well as the possibility they offer to produce novel structured materials. In particular, the existing techniques to measure and compute the fractal dimension df are critically discussed based on the cases of organic/inorganic particles and proteins. Then the aggregation conditions affecting df are thoroughly analyzed, pointing out the most recent literature findings and the limitations of our current understanding. Finally, the importance of the fractal dimension in applications is discussed along with possible directions for the production of new structured materials.

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