The device according to the invention comprises a nanostructured LED with a first group of nanowires protruding from a first area of a substrate and a contacting means in a second area of the substrate. The spacer layer then forms a template upon which quantum dots of an active layer may be formed with a surface with a surface density and formation that is influenced by the underlying first layer of quantum dots. In a preferred embodiment the damage may be repaired from a standing position without bending over or kneeling. The caliper is actuated by movement of the one-piece lever in an arc between a rest position and an engagement point with the pads in engagement with the disc. Once the neural network has been trained, the sensor unit monitors the stove top and if it detects a hazardous condition, it signals the control unit, which turns the heat off on the stove top. The at least one tie includes a first tape and a second tape that are tied together to secure a drain bulb of a surgical drain to the garment.