A method of making a semiconductor device includes forming an intermediate structure including second semiconductor fin portions above a first semiconductor layer, and top first semiconductor fin portions extending from respective ones of the second semiconductor fin portions. The valve assembly includes a low pressure ram passing through a longitudinal center or core of the assembly, and is capable of being driven in opposite reciprocal directions. A switch is provided either between the power source and the diode or between the diode and ground. The device is stable in a first configuration and a second configuration. In a particular embodiment, the encoding comprises altering a transform domain representation of the image by adding signal energy in a first chrominance channel, where the added signal energy falls primarily within a segmented arc region in a transform domain space.