"elaborate materials" is correct and usable in written English.
You can use it to refer to materials that are detailed, complex, or intricate. For example: "The professor used elaborate materials to explain the concept to us."
"There was the plebeian Planner Group and the more sophisticated Directional Group, with more elaborate materials like walnut and brass". So why the seemingly sudden rediscovery of McCobb?
From whalebone to wire, state-of-the-art spandex to austerity-era paper, boobs and bums have been progressively enlarged, shaped, squeezed and hoisted by ever more elaborate materials and mechanisms.
Of course, corsets — whether fitted with stays (later called boning), busks (long, rigid strips inserted down the middle, made of wood or steel or more elaborate materials like ivory or silver), gussets or metal eyelets — were a byword of the female lexicon beginning in the late 1500s and lasting through the 1920s.
However, we felt that this would best be done in our elaborate Materials and methods section, where we have now included more detailed information as requested.
With today's powerful process simulators, there is no apparent need for students to elaborate detailed material and heat balances for specific plant flow sheets.
The interiors of the warehouses are finished by tenants, often with elaborate material handling systems that may not be useful for subsequent tenants.
But in this novel Mr. Barry must juggle more elaborate material than the brief, simple howlers he packs into his nonfiction essays.
The textbook readings are meant to clarify or elaborate material presented in class, or to give you an idea of alternative presentations of the same material.
The great civilizations of Peru and highland Bolivia with their monolithic stone structures, major political organizations, and elaborate material wealth have long attracted the attention of the outside world.
East Aegean colouring is fainter in the Odyssey, which is set primarily in western Greece; but the poem's vagueness over the position of Ithaca, for example, is not incompatible with the idea of a poet in Ionia elaborating materials derived from the farther side of the Greek world.
The new techniques of elucidating and elaborating material, developed by romance writers in the 12th century, produced a method whereby actions, motives, states of mind, were scrutinized and debated.
