What is volkan demir?

As an AI language model, I don't have access to private information and can only provide information that is publicly available.

However, there are a few individuals named Volkan Demir who are known for their achievements in various fields, including:

1. Prof. Dr. Volkan Demir - He is a renowned Turkish researcher and academic who specializes in nanotechnology and photonics. He has authored more than 230 scientific papers and holds multiple patents in the field. He is associated with the Bilkent University in Ankara, Turkey, where he leads the Nano Optoelectronics Laboratory.

2. Volkan Demir - This person is a Turkish professional football player who currently plays for the club Kasımpaşa on loan from the team Fenerbahçe. He was born on October 20, 1996, and plays as a midfielder.

Without specifying any particular Volkan Demir, it is not possible to provide more detailed information.