A stent is disclosed that generates an elevated degree of scaffolding to a bodily vessel while retaining a highly flexible structure. The generator also filters the undesired low-frequency disturbance components because the amplification stage comprises an input low-pass filter that feeds the zero- component of the noisy voltage signal to one of the inputs of a differential amplifier, to another input of which is fed the non-filtered noisy voltage signal. The supercharging system also includes a subsystem for conveying a first portion of the air stream output to the compressor; and a bypass subsystem for optionally conveying a second portion of the air stream output to other uses. In other embodiments, an optical element is formed or otherwise provided in the lens cavity and shaped so that, when the lens is positioned above the LED, the refractor bends the emitted light in a preferred direction. In one embodiment, the present invention describes a method for measuring blood glucose in a subject.