Copper

Copper (Cu) — 10-Year Trends

As of 2026-09-11 · the last 10 years

Copper’s research intensity has fallen to about 44% of its all-time peak, a level that stands well below the element’s historical high point reached in 1986.

Research intensity ran from about 60% of the element's own all-time peak in 2016 to about 44% in 2026 — a steady decline, and the all-time peak (1986) lies before this window. Over the same span its share of research attention across all elements fell. Among the 118 elements, copper has one of the largest research literatures of any element.

The number of papers involving the element rose from about 74,655 in 2016 to about 158,370 in 2025 (2.12x). That matches the growth of the literature as a whole over the same years: the general tide of scientific output, not a surge specific to the element.

The largest material community is Copper Nanoparticle Synthesis and Photocatalytic Degradation, which accounts for about 9% of the element's recent research. These papers focus on the biogenic and chemical synthesis of copper nanoparticles and their application in photocatalytic degradation processes, with distinctive work on copper nanoparticles and their synthesis. Copper is a minor presence in a much larger community, where about 7% of its papers involve copper. The community’s share has remained steady over the last decade. A key anchor is the 2022 paper "Green synthesis of nanoparticles: Current developments and limitations," cited over 1,600 times.

A second major area is Copper Homeostasis and Wilson Disease Pathology, representing about 7% of recent research. This work examines copper metabolism, deficiency, and the genetic disorder Wilson disease, linking copper levels to neurodegeneration and cellular death, often through the lens of copper ions and homeostasis. Copper is a minor presence in a much larger community, with about 4% of its papers involving the element. The share has been steady. The field is anchored by the 2022 Science paper "Copper induces cell death by targeting lipoylated TCA cycle proteins," cited over 4,900 times.

Copper Smelting and Chalcopyrite Processing makes up about 6.5% of the literature. These papers focus on the metallurgical extraction of copper from sulfide ores, specifically treating chalcopyrite and managing smelting slag. Copper is one strand of a broader community, with about 12% of its papers involving copper. The share has been steady. A representative work is the 2022 text "Hydroxyoximes and Copper Hydrometallurgy," cited over 240 times.

Finally, Copper Indium Gallium Selenide Thin-Film Photovoltaics has seen a declining share, dropping from about 13% to 2.5% of the element's research. This community focuses on the absorber layer composition, numerical simulation, and tandem integration of CIGS solar cells. Copper is a minor presence in a much larger community, with about 8% of its papers involving copper. The decline is marked by a shift away from this specific photovoltaic niche. A notable recent contribution is the 2024 Nature Energy paper on high-concentration silver alloying, cited over 410 times.

Overall, the composition of copper research has shifted, with the CIGS photovoltaic community losing significant share while other areas remain stable. The remainder of the literature, which holds about 75% of the element's recent research, continues to rise in relative weight.

For a deeper look at the current state of copper research, see the Last 12 Months and Executive Brief reports.