Capture devices are mounted on a space platform such as a spacecraft or utility satellite. The plurality of bristles comprises a first plurality of bristles termed radial bristles. A number of the stages are coupled in series, the output of one feeding the input of the next, to form the ring. The transparent conductive layer is an anisotropic impedance layer having a relatively low impedance direction. Temperature changes during the separation of single stranded nucleic acids under native conditions are used as the basis of a novel method of detection of specific nucleic acid sequences.