Miniaturized heat pipes use the phase change of a working fluid to transfer heat passively, without consuming energy. To meet the demands of space electronics, heat pipes must be light, thin, flat, adaptable and able to dissipate a concentrated heat flux. The Labtucal, supervised by Prof. Marcia Mantelli, is one of the only research groups in the world that has a diffusion bonding furnace and large experience in welding plane metallic plates, being therefore able to produce these heat transfer devices. The present project intends to develop miniaturized flat heat pipes (thickness between 0.5 and 2.5 mm), with different configurations, manufactured by means of diffusion bonding, adapting them to the application requirements in electronic components of satellites and spacecraft. The devices will be investigated theoretically and experimentally in the laboratory and, if possible, in a microgravity environment. These configurations will be developed and validated, so that a broad set of solutions for the thermal management of small devices will be at hand. Finally, it is intended to achieve recognition of the potential of Labtucal and the diffusion bonding technology worldwide.