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Solar Power without Solar Cells A dramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solar power without traditional semiconductor-based solar cells. The researchers found a way to make an optical 51 , said Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics. Light has electric and magnetic components. Until now, scientists thought the 52 of the magnetic field were so weak that they could be ignored. What Rand and his colleagues found is that at the right intensity, when light is traveling through a material that does not conduct electricity, the light field can generate magnetic effects that are 100 million times stronger than 53 expected. 54 these circumstances, the magnetic effects develop strength equivalent to a strong electric effect. This could lead to a new kind of solar cell without semiconductors and without absorption to produce charge separation, Rand said. In solar cells, the 55 goes into a material, gets absorbed and creates heat. Here, we expect to have a very low heat load. Instead of the light being absorbed, energy is stored in the magnetic moment. Intense magnetization can be induced by intense light and then it is ultimately capable of providing a capacitive power 56What makes this possible is a previously undetected brand of optical rectification, says William Fisher, a doctoral student in applied physics. In traditional optical rectification, lights electric field causes a charge separation, or a pulling 57 of the positive and negative charges in a material. This sets up a voltage, similar to 58 in a battery. | 
