ESR14 – Ali Payami

Ali Payami

Country of Origin: Iran
Host Institution: NTNU


Ali's academic background is in surface science and manufacturing engineering, with a strong interdisciplinary orientation. He has a BSc and MSc in Materials Science (2011 & 2013) and a master's degree in the Tribology of Surfaces and interfaces - TRIBOS (2019), awarded with the Erasmus Mundus scholarship from the EU. He also has four years of professional experience as a product engineer in the corrosion protection and copper industries. He continues his research and studies on the optical properties of structured surfaces as an ApPEARS fellow, which is funded by the Marie Sklodowska-Curie Actions under the Horizon Europe program.

Aspirations within projects

Within ApPEARS, he hopes to further his knowledge of the optical science of surfaces prepared using novel processes, particularly additive manufacturing, including 2.5D and 3D printing. An innovative strategy for linking optical property parameters with surface structuring is to combine materials science, manufacturing engineering, and appearance measurement. His project's purpose is to investigate the appearance and surface quality of 3D-printed components through this novel approach.

ESR14: Optical properties of structured surfaces

Main Supervisor:



The ESR will combine knowledge from material science and optical science in a novel approach of correlating parameters of surface structuring with optical properties.

  • Prepare micro- and nano-structured surfaces by additive manufacturing technologies, photo-lithography and chemical synthesis.
  • Investigate optical and functional properties of the surfaces.
  • Establish a model explaining the correlation between basic parameters of material texturing and surface properties.
  • Using the model to generate surface texturing with attractive optical and functional properties.

Payami Golhin, A., A. S. Sole, and A. Strandlie (2023) BRDF representation in response to the build orientation in 3D-printed digital materials. Journal of Manufacturing Processes 104 p. 218-229. Doi: 10.1016/j.jmapro.2023.09.016

Payami Golhin, A., and A. Strandlie (2023) Optical properties of tilted surfaces in material jetting. Optics & Laser Technology 168: 109992. Doi: 10.1016/j.optlastec.2023.109992

Payami Golhin, A. A. S. Sole, and A. Strandlie (2023) Evaluation of surface roughness and periodical layers in material jetting, euspen’s 23rd International Conference & Exhibition, Copenhagen, DK, 12-16 June 2023. Doi: 10.5281/zenodo.8351945

Payami Golhin, A., A. Strandlie (2023) Appearance evaluation of digital materials in material jetting. Optics and lasers in engineering, Vol. 168. p. 107632. Doi: 10.1016/j.optlaseng.2023.107632

Payami Golhin, A., R. Tonello, J. R. Frisvad, S. Grammatikos, A. Strandlie (2023) Surface roughness of as-printed polymers: a comprehensive review. The International Journal of Advanced Manufacturing Technology 2023. Doi: 10.1007/s00170-023-11566-z

Payami Golhin, A. C. Srivastava, A. Strandlie, A. Sole, S. Grammatikos (2023). Effects of accelerated aging on the appearance and mechanical performance of materials jetting products. Materials & design. volum 228.

Payami Golhin, A., C. Srivastava, J. F. Tingstad, A. S. Sole, A. Strandlie, S. Grammatikos (2022) Additive manufacturing of multilayered polymer composites: Durability assessment. Proceedings of the 20th European Conference on Composite Materials - Composites Meet Sustainability (Vol 1-6). 

Payami Golhin, A., A. Sole, A. Strandlie (2022) Color appearance in rotational material jetting. The International Journal of Advanced Manufacturing Technology.

Golhin, A. P., A. Strandlie, P. Green (2021) The Influence of Wedge Angle, Feedstock Color, and Infill Density on the Color Difference of FDM Objects. Journal of Imaging Science and Technology. Society for Imaging Science and Technology.