An ambient solution-state method for making uniform nanobrushes composed of oriented 1D silver nanowires (NWs) with aspect ratios of 102-104 is reported. These structures are grown over cm2 areas on conducting surfaces. Assemblies of NWs form uniform nanobrush structures, which can capture micrometer-sized objects, such as bacteria and particulate matter. Variation in composition produces unique structures with catalytic properties. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.