For a subset of nanorod recipes using the most common precursor set, a search-based size detection algorithm was used for further analysis correlating the recipe and size. This algorithm searches size indicators (e.g. "diameter", "length", "aspect ratio") and size measurments (e.g. "between 30 and 40 nm", "3 ± 0.5"). Then it attempts to link the indicatormeasurment pair in a single sentence, and outputs a blank list if the link is not straightforward. The extraction and linking of the size to the synthesis target of interest were challenging because the size characterization section was often distant from the synthesis recipes in the document. Furthermore, many papers present the size information of the 'final' synthesized AuNRs after modifications (e.g. another seeded growth using NR seeds) and it was not always clear, without the figures, what the presented size information is referring to. To ensure the quality of the relation extraction, we manually validated all the dataset for further analysis.