The humanity in this early 21^st century is experiencing a technological evolution at an unprecedented speed. This is mainly due to the transition from microscale to nanoscale technology supported by a continuous decrease of the size of electronic components and by a development of dedicated characterization tools. During the last two decades, the word has observed a tremendous research and development activity in the field of Nanotechnology. Nowadays, mankind witnesses a great impact of what is commonly called "Nano" on the everyday life. Scientists, industrials, economists, and also governments are aware of such key technology. In this context, Algeria is willing to participate to the evolution of nanotechnology and to develop in the long-term a tight interconnection between the nanoscience and nanotechnology research and the industry. In this presentation, I will talk about how we plan to develop the Nano field in Algeria and more specifically in Setif. In a second part of the talk, I will present briefly a material which supports a new phase of matter and could revolutionize nanotechnology, namely, the topological insulator. I will present some of my recorded "spectacular" electronic structures obtained from a topological insulator.