Remote Distance Printing with DSP
Another distinctive aspect of DSP is the more depth of penetration of the printing acoustic energy. In conventional light-based AM technologies, light absorption and scattering hinder large penetration of the printing energy in the printing medium especially if the material is opaque and filled with scattering particles. However, the optical opacity of the printing material does not affect the DSP process since the sound waves are used as the energy source and not light. Acoustic attenuation and scattering that diverge sound waves need to be taken into account based on the printing materials. However, due to the nature of sound waves, light absorption and scattering do not affect the depth of sound wave penetration in optically opaque materials as long as acoustic attenuation and scattering are not dominant.
Sources:
- Habibi, M., Foroughi, S., Karamzadeh, V. et al. Direct sound printing. Nature Communications 13, 1800 (2022). https://www.nature.com/articles/s41467-022-29395-1
- Derayatifar, M., Habibi, et al. Holographic direct sound printing. Nature Communications 15, 6691 (2024). https://www.nature.com/articles/s41467-024-50923-8