Abstract: A method of producing nano and micro sized particles having an anisotropic composition and/or morphology is provided. A composition distribution is on a surface or throughout a particle. The nano and micro sized particles are metal, inorganic, or combinations thereof; and the nano and micro sized particles are known as hard anisotropic particles.

Abstract: Undercooled liquid metallic core-shell particles, whose core is stable against solidification at ambient conditions, i.e. under near ambient temperature and pressure conditions, are used to join or repair metallic non-particulate components. The undercooled-shell particles in the form of nano-size or micro-size particles comprise an undercooled stable liquid metallic core encapsulated inside an outer shell, which can comprise an oxide or other stabilizer shell typically formed in-situ on the undercooled liquid metallic core. The shell is ruptured to release the liquid phase core material to join or repair a component(s).