The Nexus uses singularity related technology for wireless power, construction of Lancers and some other misc things currently not accessible by any C.V-S user. This is done by creating a stabilized rift or “boundary” between the external environment and the projected singularity system. This is also known as an S.R.U2) and is a form of technology Vertu has significant interest and development in. Part of the challenge of making a SRU applicable is ensuring the created rift does not trigger unwanted consequences such as creating a vacuum within an atmosphere to create 50m/s (180km/h) winds.
Of course, this can be weaponized by purposely destabilizing the SRU's safety systems. To prevent collateral damage, this destabilization has to be controlled and methodical. As fun as it would be to just pop open a SRU without stopping the local atmosphere from bolting into the rift, it would cause massive amounts of unwanted collateral damage.
Instead, the Nexus has the ability to create an unstable rift from its SRU and the barrier preventing the atmospheric or atomic median from rushing into the rift would glow a rather dim orange rather than a bright blue as the energy contained within the containment barrier is far less than in a fully stable SRU projection. This allows the projected rift to act like a black hole if in atmosphere as the atmosphere collapses into the rift in a controlled manner, dragging anything with it that is not thoroughly secured in the ground.
Mean while, as with all SRU's, the projected rift enters a storage “pocket dimension” completely managed by nanites. It is even theorized that a large portion of the “dimension's” mass is in these nanites. These nanites have been programmed for the Nexus's WSS based on informational stimuli released and detectable by the phenomenon of the destabilized projection by the Nexus's SRU. This tells the Nanites to act as a “weapon”. For whatever comes too close to the SRU's projection is swiftly torn apart and obliterated by a Nanite swarm which rapidly deconstructs the construct, even Vertu units and systems (though failsafe's are present for plenty of conditions. If a VGPSF finds itself next to the unstable SRU projection, it can tell the Nanites to not deconstruct it and they wont. The Fighter will then “play” as though it was taking damage and either “remember” this damage after engaging a micro-jump to escape the situation or exit the area via a proper teleportation jump much like when enough Light SAMs cause enough insignificant damage. In the end, the VWC project is more of an experiment than an actual weaponization project). When out of atmosphere, these same Nanites will drag unsecured constructs towards the SRU's projection to essentially mimic the affects of what would happen in atmosphere. This is also why constructs far from the SRU still withstand damage and why certain constructs don't take damage (unless unwantedly dragged into the SRU projection in which the Nanites must deconstruct it).
After the SRU has been active for long enough, it will swiftly turn off (in which the Nanites outside the SRU projection will very hastily return to the “pocket dimension”) and due to the forces going on at the time (including those “mimicked” by the Nanites), the sudden absence of the SRU projection will trigger a high energy event, releasing a massive Electro Magnetic Pulse (EMP) which stuns and nullifies plenty of units in a very large radius. Of course, at the same time nothing has survived the influence radius of the weaponized SRU projection, including Creeper and AC (which would of been aggressively deconstructed to prevent Creep and or AC from contaminating the “pocket dimension”).