Hi, the scope for Nano science and technology is extremely good. As it is a newly evolving branch there is a lot of scope to research and come up with new ways of using this technology for the betterment and ease of living. The downside of this is it is very difficult to find placement reports of ACT campus and hence it is safe to say that the placements might be mediocre. If you dig in deep you might find it. Hope this helps. All the best!