TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Component: The first and second substrates consist of glass or ceramic.Preferred Material: The O-ring (24) is a dense ceramic material.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The first and second substrates consist of silicon. The electrically isolating, heat-conducting coatings consist of silicon dioxide and/or metals.Preferred Material: The thick film porous material is nickel, silicon, silicon dioxide, silicon nitride, aluminum, alumina, polyimide, palladium, titanium and/or their alloys.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Component: The cavity is constructed to have enough strength to withstand 20-50 psi pressure as the hydride is heated. It is predetermined based on the power requirement to heat the metal hydride with the resistive heaters and outgas the hydrogen through the outlet valve.Preferred Property: The thickness and porosity of the thick film porous material is tailored to provide a pressure gradient such that the hydrogen flow at the outlet is at ambient pressure.Preferred Apparatus: The apparatus further comprises a gas distribution system formed by coupling a microfluidic interconnect to the thick film porous material. The coupling is accomplished by placing an O-ring around the thick film porous material.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The first and second substrates consist of silicon. The electrically isolating, heat-conducting coatings consist of silicon dioxide and/or metals.Preferred Material: The thick film porous material is nickel, silicon, silicon dioxide, silicon nitride, aluminum, alumina, polyimide, palladium, titanium and/or their alloys.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The first and second substrates consist of plastic. The electrically isolating, heat-conducting coatings consist of polymers. Preferred Material: The hydrogen permaselective membrane comprises a high strength polymer and/or metal alloy material that enables selective gas permeation through the membrane as a function of temperature.