A system for cooling comprising: a micro channel layer (200,500); and a gas, wherein the gas is air; wherein the micro channel layer (200,500) comprises at least a first base, a second base, a first side, a second side, and a third side; wherein the first base, the second base, the first side, and the second side are configured to form a micro channel (130,530) extending between an inflow opening and an outflow opening; wherein the first base, the second base, the second side, and the third side are configured to form an aligned micro channel extending between an aligned inflow opening and an aligned outflow opening; wherein the inflow opening and the aligned inflow opening form a set of inflow openings and the outflow opening and the aligned outflow opening form a set of outflow openings, the system being such that in use pressure of the gas proximal to the set of inflow openings is atmospheric and the system is such to cause pressure of the gas proximal to the set of outflow openings to be less than atmospheric thereby inducing the gas to flow through the micro channel (130, 530) and the aligned micro channel through operation of a pressure differential; wherein the micro channel (130,530) is configured to accommodate a flow of the gas from the set of inflow openings to the set of outflow openings in a first direction substantially perpendicular to a cross section of the micro channel layer (200,500); wherein the first base and the second base are selected from a set of base materials consisting of: aluminum sheet metal, anodized aluminum, Teflon-coated aluminum, painted aluminum, copper sheet metal, graphene, and pyrolytic graphite; wherein the first side, the second side and the third side are selected from a set of side materials consisting of: aluminum foil, copper foil, graphene, and pyrolytic graphite; and wherein the first side, the second side, and the third side have a thickness in a range between 0.5 μm and 500 μm, and the first side, the second side, and the third side are on the first base such that a channel is formed between the first side and the second side and such that an aligned channel is formed between the second side and the third side, and the second base is on the first side, the second side, and the third side wherein the micro channel layer (200,500) comprises at least a first base, a second base, a first side, a second side, and a third side; wherein the first base, the second base, the first side, and the second side are configured to form a micro channel (130,530) extending between an inflow opening and an outflow opening; wherein the first base, the second base, the second side, and the third side are configured to form an aligned micro channel extending between an aligned inflow opening and an aligned outflow opening; wherein the inflow opening and the aligned inflow opening form a set of inflow openings and the outflow opening and the aligned outflow opening form a set of outflow openings, the system being such that in use pressure of the gas proximal to the set of inflow openings is atmospheric and the system is such to cause pressure of the gas proximal to the set of outflow openings to be less than atmospheric thereby inducing the gas to flow through the micro channel (130, 530) and the aligned micro channel through operation of a pressure differential; wherein the micro channel (130,530) is configured to accommodate a flow of the gas from the set of inflow openings to the set of outflow openings in a first direction substantially perpendicular to a cross section of the micro channel layer (200,500); wherein the first base and the second base are selected from a set of base materials consisting of: aluminum sheet metal, anodized aluminum, Teflon-coated aluminum, painted aluminum, copper sheet metal, graphene, and pyrolytic graphite; wherein the first side, the second side and the third side are selected from a set of side materials consisting of: aluminum foil, copper foil, graphene, and pyrolytic graphite; and wherein the first side, the second side, and the third side have a thickness in a range between 0.5 μm and 500 μm, and the first side, the second side, and the third side are on the first base such that a channel is formed between the first side and the second side and such that an aligned channel is formed between the second side and the third side, and the second base is on the first side, the second side, and the third side