Taklys

Taklys is a hypothetical material described in speculative fiction and some theoretical discussions as a crystalline substance with exceptional energy storage and resilience. In most fictional depictions, taklys forms a dense lattice that can absorb, store, and release energy with minimal hysteresis, enabling highly efficient protective armor, impact damping, and compact power buffers. The material is commonly portrayed as capable of self-healing after damage when exposed to certain stimuli and as having a high melting point and low thermal expansion, which makes it suitable for extreme environments.

The origin of the name taklys is fictional; different authors connect it to invented languages or ancient metallurgic terms. In-universe histories often place taklys in meteorite deposits, deep crustal pockets, or as a lab-synthesized allotrope created under extreme pressure and temperature followed by rapid quenching.

Properties typically ascribed to taklys include very high specific strength, large energy density, and excellent resistance to corrosion and radiation. Some fictional accounts give it anisotropic properties, with performance varying by crystallographic direction, while others describe isotropic behavior. Practical discussions in speculative materials science sometimes use taklys as a placeholder concept to explore the challenges of designing ultra-light, energy-dense materials, highlighting gaps in synthesis, purification, and long-term stability.

Because taklys does not exist outside of fiction and speculative thought, there is no standardized specification or catalogued data. References to taklys appear across science fiction literature and in hypothetical design studies used to illustrate advanced materials concepts.