Thisure

Thisure is a fictional material described in speculative fiction as a highly versatile substance capable of simultaneous energy storage, structural reinforcement, and electromagnetic conduction. It is not a real element or compound in current science.

In most depictions, Thisure combines extreme tensile strength with low density and exhibits superconducting or near-superconducting electrical properties at moderate temperatures. Its energy density is depicted as orders of magnitude higher than that of conventional fuels and batteries, enabling compact power systems.

The name Thisure appears across different fictional universes with no single canonical origin; in some texts it is said to derive from a contraction of "this" and "sure," while in others it is presented as an acronym for a laboratory project. The concept often signals advanced civilization or frontier technology.

Production and availability are described as requiring specialized facilities using high-energy plasma crystallization, nanofabrication, or quantum-aligned synthesis. Access is typically restricted to major factions or corporate megacorps within those stories, creating scarcity and strategic value.

Typical applications include spacecraft hulls and propulsion components, energy cores, and resilient microdevices. The material's potential also raises ethical and environmental questions in fiction, such as resource monopolies, existential risk from catastrophic failure, and the social impact of ultra-efficient energy.