A cradle casing has a DCDC adapter to receive DC power from a DC power source and generate a first DC power signal. When the elements may be made to lean toward each other, such as by providing a drop of a liquid thereon and allowing the liquid to dry, groups of tips of elongate elements are formed and the Raman enhancement is extremely high. If the power sources are normal, all disks are spun up. Several struts are combined to a receiving part in that the struts are arranged parallel to one another and connecting elements are used to connect the struts to one another. The advantage of this arrangement is that cheaper antenna arrays can be constructed without limiting the capability andor performance of a system incorporating such an array when compared to a conventional solution. Such stents can be both very flexible and fully cover vessel surface inside the vascular lumen, and be well designed for both the delivery phase and the deployed phase of the stent life cycle.