As you wrote substrates can be suspended vertically or horizontally in the bath.
Examples for substrates suspended vertically:
1- Effects of Substrate on the Structure, Morphology and Optical Properties of Vertically Aligned ZnO Nanorod Arrays Grown by Low-temperature CBD Method
Article in Journal of Inorganic Materials 25(10) · October 2010
1-Scaffolding an ultrathin CdS layer on a ZnO nanorod array using pulsed electrodeposition for improved photocharge transport under visible light illumination
Yiming Tang,a Patrapark Traveerungroj,a Hui Ling Tan,a Peng Wang,a Rose Amal*a and Yun Hau Ng*a