Slot Self Tightening slot self Slot Self allocation based MAC (SMAC) is a proposal for energy harvesting Nano-NETworks. Two transmission routes for distributed and centralized nano-NETworks are proposed, respectively. In centralized nano networks, the nodes are arranged in a ring, while in distributed networks the nodes are randomly positioned around the mesh.

The invention consists of a series of interacting elements that change the slot location of an ingress probe at a given interface. The slot moves toward an interface and the insertion barrier is removed allowing the ingress probe to be passed through. The invention allows for such movement of ingress and egress without requiring a static control device. Such devices could be described as physical or logical, where physical control is achieved by use of a physically present device or controlled software program that alters the state of the ingress probe at each interface. Such physical control could also be achieved via power-assisted transmission of signals between communicating components or through the use of directed energy to move the cooperating elements. Alternatively, some physical control may be achieved by using a physically present device and software, such as a physical block, that changes the state of the ingress slot.

Based on the assumption that the physical device can physically change the slot position, the invention refers to methods and apparatus for physically changing the slot location. For example, one way that a slot might change is by an insertion force, whereby the slot moves toward an interface when an object is inserted into it, and an exit force whereby the slot moves away from an interface when an object is removed from it. Such physical control methods may involve the use of mechanical interlocking devices, where the slots are interconnected between two pieces of metal that are aligned so that when one component is moved, the other component is forced to align with it.

An example of such a mechanical interlocking device is illustrated in the photo above. The slot tightening component is shown as a spring that pushes outward on a metallic plate that is positioned below the slot. The plate needs to be pushed into the slot using a mechanical power shift spring that causes the plate to be pressed into the slot. Such a method might be effective in tightening a slot, where the slot has a very small gap between it and the wall or other obstruction, but will not have very much influence on slot size or depth.

A more desirable type of slot self tightening device is illustrated in the photo at the right. This illustration shows a slot tightening device that uses a dual mechanism. First, there is a metal bar that connects the lower end of the slot to the lower end of the sliding bar. Then, there is a tappet that fits into the upper part of the slot and prevents the sliding bar from penetrating the slot.

The advantage of this type of slot self tightening device is that it provides an alternative to actually drilling into the slot. Instead, it uses a mechanical pressure that is exerted on the slot by the sliding bar and the tappet. In this way, the slot will be forced to close, whether or not the pressure is released. Such a mechanism might be ideal for a slot that is very deep, or has a particularly restricted number of passageways.