Cooling
http://en.wikipedia.org/wiki/Toroidal_inductors_and_transformers
http://en.wikipedia.org/wiki/Electrostatic_generator
Thermal treatment
Eg aluminium
http://en.wikipedia.org/wiki/Safety_fuse
http://en.wikipedia.org/wiki/Grate_heater
Biodegradable
http://en.wikipedia.org/wiki/Rolling-element_bearing
http://en.wikipedia.org/wiki/Chuck_(engineering)#Collet
E.g. http://en.wikipedia.org/wiki/Fluorescent_lamp
http://en.wikipedia.org/wiki/Spalting
http://en.wikipedia.org/wiki/Biomimetics
http://en.wikipedia.org/wiki/Carbon_steel
http://en.wikipedia.org/wiki/Actuator
Textile fibres with antimicrobial functions
http://en.wikipedia.org/wiki/Cellulose_acetate
http://en.wikipedia.org/wiki/Biomagnification
http://en.wikipedia.org/wiki/Enterococcus_faecium
http://en.wikipedia.org/wiki/Lactobacillus