A collaborative research team from the University of Illinois Urbana-Champaign in the United States and the Technical University of Denmark has triumphantly crafted the inaugural "thermal invisibility cloak." This groundbreaking device is designed to render objects thermally imperceptible in three-dimensional realms. Rooted in the principles of transformation thermodynamics theory, and fabricated through a synergistic blend of 3D printing and mold casting methodologies, this innovative apparatus enables objects of virtually any shape to circumvent detection by infrared thermal imagers, all the while preserving a consistent internal temperature. Prior to this achievement, no experimental thermal invisibility contrivance had demonstrated such efficacy in complex three-dimensional configurations. Anticipated applications of this technology span the thermal regulation of delicate electronic components and the enhancement of security measures within defense sectors. The research team is poised to delve deeper into the realm of "smart" thermal invisibility cloaks, endowed with the capability for dynamic responses and active thermal manipulation. Their pertinent discoveries have already been disseminated in the esteemed journal Nature Communications.