is saturated, thus making the condenser the evaporator and vice versa. MOFs' extremely high surface areas and porosities have made them the subject of much research in water adsorption applications. Chemistry can help tune the optimal relative humidity for adsorption/desorption, and the sharpness of the water uptake. Ferroelectrics and multiferroics Some MOFs also exhibit spontaneous electric polarization, which occurs due to the ordering of electric dipoles (polar linkers or guest molecules) below a certain phase transition temperature. If this long-range dipolar order can be controlled by the external electric field, a MOF is called ferroelectric. Some ferroelectric MOFs also exhibit magnetic ordering making them single structural phase multiferroics. This material property is highly interesting for construction of memory devices with high information density. The coupling mechanism of type-I [(CH3)2NH2][Ni(HCOO)3] molecular multiferroic is spontaneous elastic strain mediated indirect coupling. See also Covalent organic framework BET theory Conjugated microporous polymer Coordination chemistry Coordination polymers Cryogenics Electrocatalyst Crystal nets (periodic graphs) Hydrogen Hydrogen economy Liquid hydrogen Macromolecular assembly Metal–inorganic framework Omar M. Yaghi Susumu Kitagawa Gérard Férey Organometallic chemistry United States Department of Energy X-ray Crystallography Zeolitic imidazolate frameworks Solid sorbents for carbon capture Flexible metal-organic framework Hydrogen-bonded organic framework References External links MOF pore characterizations Hypothetical MOFs Database MOF physical property calculator Crystal engineering Porous media