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Materials Science - High-Tech Underwear

Across
A "smart" material that can change its structure in response to its environment, such as the local temperature, pH, salt or water concentration.
Something whose shape resembles a thread or filament.
To turn from liquid into vapor.
A substance formed from two or more atoms that unite (bond) in a fixed proportion and structure.
Able to carry an electric current.
Someone who applies engineering to solve problems in biology or in systems that will use living organisms.
A device that can convert chemical energy into electrical energy.
An adaptation or improvement to an existing idea, process or product that is new, clever, more effective or more practical.
A synthetic material used chiefly to make fabrics.
A material through which an electrical current can flow.
A fluid - such as water or air - that moves in a recognizable direction.
Conditions in the atmosphere at a localized place and a particular time.
Down
The length of a straight line that runs through the center of a circle or spherical object.
An electrically neutral group of atoms that represents the smallest possible amount of a chemical compound.
Any flexible material that is woven, knitted, or can be fused into a sheet by heat.
A flow of charge, usually from the movement of negatively charged particles, called electrons.
A substance made from long chains of repeating groups of atoms.
Something that conducts electricity well, tends to be shiny and malleable.
A silky material that is made from long, manufactured molecules called polymers.
The study of living things.
A prefix indicating a billionth.
An adjective that describes something that did not arise naturally, but was instead created by people.