In this work, the effect of secondary electron emission (SEE) has been investigated from several novel nanomaterials with the use of high-resolution proton microbeam. The beam of 1.5 MeV þ H 2 hydrogen with a sub 70 nm resolution was obtained at a Centre for Ion Beam Applications (CIBA) at the National University of Singapore in Singapore. The high-resolution proton beam allowed investigation for the very first time of difference in the SEE properties between different parts of nanomaterial (e.g., top of nanorod versus valley between nanorods) and between different samples.The primary motivation for this work has been the need for the development of highly efficient radiation detectors in various fields, from space application(s) to environmental research. The nanomaterials investigated possess geometric structural detail that is expected to improve their SEE properties over those of blank thin film/bulk materials. Here, we present results for several nanostructured materials, as derived from MeV ion nanoprobe irradiation(s) performed at the best lateral resolutions available (CIBA).A vast amount of work has been performed for the development and characterization of the physical properties of carbon